JP2007281599A - Remote control device, video processing device, and transmission / reception system - Google Patents

Abstract

A remote operation device capable of causing a video processing device to determine a difference in a signal transmission path, a video processing device capable of determining a difference in a signal transmission path from the remote operation device, and an operated device from the remote operation device It is an object to provide a transmission / reception system capable of determining a difference in a signal transmission path.
A transmission / reception system includes a remote control device and a video processing device. The remote control device 200 is provided with a light emitting element LD. The image processing apparatus is provided with an infrared signal light receiving unit 307. The infrared signal output from the light emitting element LD of the remote operation device 00 is received by the infrared signal light receiving unit 307 of the video processing device. The light emitting surface of the light emitting element LD has a planar shape that is not line symmetric with respect to any axis on the surface.
[Selection] Figure 2

Description

  The present invention relates to a remote operation device that remotely operates a video processing device, a video processing device that is operated by the remote operation device, and a transmission / reception system that transmits and receives operation signals.

  2. Description of the Related Art Conventionally, a display device that displays a received broadcast video by reversing left and right is known (for example, Patent Document 1). Such a display device can be effectively used in, for example, a barber shop and a beauty salon.

In a barber shop etc., customers usually have their hairdressed while facing the mirror. When a television receiver is installed behind the customer, the customer can watch a television broadcast program while watching the video reflected in the mirror. However, the image reflected in the mirror is a horizontally inverted image of the image displayed on the television receiver. As a result, the customer sees the inverted video and may feel uncomfortable. Therefore, by using the display device as described above, it is possible to invert the broadcast video displayed on the display device and project the original broadcast video on the mirror. Thereby, the customer can view the program of the television broadcast without a sense of incongruity.
Japanese Patent Application Laid-Open No. 60-109977

  By the way, switching of a television broadcast channel is usually performed using a remote control device that outputs an infrared signal. An infrared signal output from the remote control device can be reflected by a mirror. Therefore, the customer who is performing hairdressing can switch the channel by operating the remote control device toward the mirror.

  However, in the conventional remote control device, the light receiving unit provided in the display device determines whether the infrared signal output from the remote control device has reached the display device directly or has reached the display device after being reflected by a mirror. Can not be recognized.

  Therefore, when a customer sees an image reflected in a mirror, the broadcast image displayed on the display device must be reversed left and right by, for example, pressing a switch button provided on the remote control device. In addition, even when a store clerk views a television broadcast program after the customer service is over, in order to return the television receiver image to the original display state, the switch button provided on the remote control device must be pressed. I must.

  Thus, pressing the switch button every time the display state is switched may complicate the viewer and cause discomfort in situations where switching must be performed frequently.

  An object of the present invention is to provide a remote control device that allows a video processing device to determine a difference in a signal transmission path.

  Another object of the present invention is to provide a video processing apparatus capable of determining a difference in a signal transmission path from a remote control device.

  Still another object of the present invention is to provide a transmission / reception system capable of determining a difference in a signal transmission path from a remote operation device to an operated device.

  (1) A remote control device according to a first aspect of the present invention is a remote control device for remotely controlling a video processing device capable of generating a video signal for displaying a video in a normal state and an inverted state using an optical signal. , An operation signal generating means for generating an operation signal for operating the video processing device based on a user operation, and an operation signal generated by the operation signal generating means is converted into an optical signal and transmitted to the video processing device. And an optical signal received by the image processing apparatus after being reflected by the object from the optical signal generating means without being reflected by the object from the optical signal transmitting means. This is different from the embodiment.

  In this remote operation device, an operation signal based on a user's operation is generated by the operation signal generation means. The operation signal is converted into an optical signal by the optical signal transmission means and transmitted to the video processing apparatus.

  Here, the mode of the optical signal received by the video processing device without being reflected by the object from the optical signal transmitting unit is different from the mode of the optical signal received by the video processing device reflected by the object from the optical signal generating unit. .

  In this case, the video processing apparatus determines whether the optical signal transmitted from the remote control device reaches the video processing apparatus without being reflected by the object, or is reflected by the object depending on the form of the received optical signal. Can be determined.

  That is, the remote control device can operate the video processing device by transmitting the optical signal to the video processing device, and can easily cause the video processing device to determine the difference in the transmission path of the optical signal. Further, the video processing apparatus can select and display the normal state video or the reverse video based on the determination result.

  For example, when the user of the remote control device views the video displayed by the video processing device through a mirror, the optical signal is transmitted to the video processing device reflected in the mirror. The optical signal transmitted from the remote control device is reflected by the mirror and then received by the video processing device. The video processing device determines that the optical signal transmitted from the remote control device is reflected by the mirror and reaches the video processing device, and displays the video in the inverted state.

  Here, the video displayed in the mirror viewed by the user of the remote control device is a video obtained by inverting the video displayed by the video processing device. Therefore, the user can see the normal image by looking at the mirror.

  On the other hand, when the user of the remote control device is directly viewing the video displayed by the video processing device, the user directly transmits an optical signal to the video processing device. The optical signal transmitted from the remote control device reaches the image processing device directly and is received. The video processing device determines that the optical signal transmitted from the remote control device has reached the video processing device directly, and displays a normal video. Accordingly, the user can view the normal state image by directly viewing the image displayed by the image processing apparatus.

  In this way, the user does not need to perform an operation for switching the display state in either case of directly viewing the image displayed by the image processing apparatus or viewing the image reflected in the mirror. Thereby, it is possible to view the video comfortably.

  (2) The optical signal transmitting means may have a light emitting surface that emits an optical signal, and the light emitting surface may have a shape that is not line symmetric with respect to an axis in any direction on the light emitting surface.

  When the shape of the light emitting surface is inverted about an arbitrary axis on the plane, the shape before the inversion and the shape after the inversion do not overlap with each other by the rotation operation and the movement operation. Therefore, when the optical signal transmitted from the remote control device is reflected by an object and received by the video processing device, the shape of the optical signal received by the video processing device can be rotated and moved And the shape of the light exit surface do not overlap.

  On the other hand, when the optical signal transmitted from the remote control device is received by the video processing device without being reflected by the object, by rotating and moving the shape of the optical signal received by the video processing device, The shape and the shape of the light exit surface can be overlapped.

  Therefore, the video processing apparatus can easily and reliably determine the difference in the transmission path of the optical signal by comparing the shape of the received optical signal with the shape of the light emission surface of the optical signal transmission means.

  (3) The optical signal transmission unit includes three or more light emitting units that emit optical signals, and the three or more light emitting units may not be arranged on a straight line.

  When the optical signals emitted from the three or more light emitting units are inverted about an arbitrary axis on the plane, the relative positional relationship between the three or more optical signals before the inversion and after the inversion The relative positional relationship between three or more optical signals is different. Therefore, when the optical signal transmitted from the remote control device is reflected by the object and received by the video processing device, the relative positional relationship between the three or more optical signals received by the video processing device is: This is different from the relative positional relationship between the three or more light emitting units that emit optical signals.

  On the other hand, when the optical signal transmitted from the remote control device is received by the video processing device without being reflected by the object, the relative positional relationship of the three or more optical signals received by the video processing device is: It is equal to the relative positional relationship between the three or more light emitting units that emit signals.

  Therefore, the video processing apparatus compares the relative positional relationship between the three or more received optical signals with the relative positional relationship between the three or more light emitting units that emit the optical signals. Thus, it is possible to easily and reliably determine the difference in the transmission path of the optical signal.

  (4) The optical signal transmission unit may include a light emitting unit that emits an optical signal, and the light emitting unit may move along a non-linear path.

  When the optical signal emitted from the light emitting unit moving on this non-linear trajectory is inverted about an arbitrary axis on the plane, the moving direction (trajectory) of the optical signal before the inversion and the optical signal after the inversion This is different from the moving direction (trajectory). Therefore, when the optical signal transmitted from the remote control device is reflected by the object and received by the video processing device, the moving direction (trajectory) of the optical signal received by the video processing device is the moving direction of the light emitting unit ( Different from the trajectory).

  On the other hand, when the optical signal transmitted from the remote control device is received by the video processing device without being reflected by the object, the moving direction (trajectory) of the optical signal received by the video processing device is the moving direction of the light emitting unit Equal to (trajectory).

  Therefore, the video processing apparatus can easily and reliably determine the difference in the transmission path of the optical signal by comparing the movement direction (trajectory) of the received optical signal with the movement direction (trajectory) of the light emitting unit. it can.

  (5) A video processing device according to a second aspect of the present invention is a video processing device that generates a video signal for displaying video based on an optical signal transmitted from a remote control device, and is transmitted from the remote control device. The optical signal that is not reflected by the object is different from the case that it is reflected by the object, and the optical signal received from the remote control device and the optical signal received by the light receiving unit are different. Determining means for determining whether the optical signal transmitted from the remote control device based on the aspect arrives at the light receiving unit without being reflected by the object, and the video is in a normal state or an inverted state based on the determination result of the determining means Video signal generating means for generating a video signal to be displayed on the screen.

  In this video processing device, an optical signal transmitted from a remote control device is received by a light receiving unit. The determination unit determines whether or not the optical signal transmitted from the remote control device reaches the light receiving unit without being reflected by the object based on the mode of the optical signal received by the light receiving unit.

  Here, the optical signal transmitted from the remote control device differs in a mode when it is not reflected by an object and a mode when it is reflected by an object. Therefore, the determination unit can easily determine the difference in the transmission path of the optical signal based on the mode of the optical signal received by the light receiving unit.

  The video signal generation unit generates a video signal for displaying the video in a normal state or an inverted state based on the determination result of the determination unit. That is, the video processing apparatus can select and display the normal state video or the reverse video based on the determination result of the determination unit.

  For example, when the user of the remote control device views the video displayed by the video processing device through a mirror, the optical signal is transmitted to the video processing device reflected in the mirror. The optical signal transmitted from the remote control device is reflected by the mirror and then received by the video processing device. The video processing device determines that the optical signal transmitted from the remote control device is reflected by the mirror and reaches the video processing device, and displays the video in the inverted state.

  Here, the video displayed in the mirror viewed by the user of the remote control device is a video obtained by inverting the video displayed by the video processing device. Therefore, the user can see the normal image by looking at the mirror.

  On the other hand, when the user of the remote control device is directly viewing the video displayed by the video processing device, the user directly transmits an optical signal to the video processing device. The optical signal transmitted from the remote control device reaches the image processing device directly and is received. The video processing device determines that the optical signal transmitted from the remote control device has reached the video processing device directly, and displays a normal video. Accordingly, the user can view the normal state image by directly viewing the image displayed by the image processing apparatus.

  In this way, the user does not need to perform an operation for switching the display state in either case of directly viewing the image displayed by the image processing apparatus or viewing the image reflected in the mirror. Thereby, it is possible to view the video comfortably.

  (6) The remote control device has a light exit surface that emits an optical signal, and the light exit surface has a shape that is not line-symmetric with respect to an axis in any direction on the light exit surface. The light receiving unit has a light receiving surface that receives an optical signal emitted from the light emitting surface of the remote control device, and the determination unit is an optical signal transmitted from the remote control device based on the shape of the optical signal on the light receiving surface. It may be determined whether or not the light reaches the light receiving unit without being reflected by the object.

  When the shape of the light emitting surface of the remote control device is inverted about an arbitrary axis on the plane, the shape before the inversion and the shape after the inversion do not overlap with each other by the rotation operation and the movement operation. Therefore, when the optical signal transmitted from the remote control device is reflected by an object and received by the light receiving surface of the video processing device, even if the shape of the optical signal on the light receiving surface is rotated and moved, The shape and the shape of the light exit surface do not overlap.

  On the other hand, when the optical signal transmitted from the remote control device is received by the light receiving surface of the video processing device without being reflected by the object, by rotating and moving the shape of the optical signal on the light receiving surface, The shape and the shape of the light emitting surface can be overlapped.

  Therefore, the determination unit of the video processing apparatus easily and reliably determines the difference in the transmission path of the optical signal by comparing the shape of the optical signal on the light receiving surface with the shape of the light emitting surface of the remote control device. be able to.

  (7) The remote control device includes three or more light emitting units that emit optical signals, and the three or more light emitting units are not arranged in a straight line, and the light receiving unit of the video processing device is It has a light receiving surface that receives three or more optical signals emitted from three or more light emitting units, and the determination means transmits from the remote control device based on the positional relationship of the three or more optical signals on the light receiving surface. It may be determined whether or not the received optical signal reaches the light receiving unit without being reflected by the object.

  When the optical signals emitted from the three or more light emitting units of the remote control device are inverted around an arbitrary axis on the plane, the relative positional relationship between the three or more optical signals before the inversion This is different from the relative positional relationship between the three or more optical signals after inversion. Therefore, when the optical signal transmitted from the remote control device is reflected by the object and received by the light receiving surface of the video processing device, the relative positional relationship between the three or more optical signals on the light receiving surface is This is different from the relative positional relationship between the three or more light emitting units that emit optical signals.

  On the other hand, when the optical signal transmitted from the remote control device is received by the light receiving surface of the video processing device without being reflected by the object, the relative positional relationship of the three or more optical signals on the light receiving surface is: This is equal to the relative positional relationship between the three or more light emitting units that emit optical signals.

  Therefore, the determination unit of the video processing device is configured to determine the relative positional relationship between the three or more optical signals on the light receiving surface and the relative positional relationship between the three or more light emitting units that emit the optical signals. Can be easily and reliably determined for the difference in the optical signal transmission path.

  (8) The remote control device includes a light emitting unit that emits an optical signal, the light emitting unit moves in a non-linear path, and the light receiving unit of the video processing device is light emitted from the light emitting unit of the remote control device. Whether or not the light signal transmitted from the remote control device based on the moving direction of the light signal on the light receiving surface reaches the light receiving unit without being reflected by the object is provided. May be determined.

  When the optical signal emitted from the light emitting unit moving in the non-linear trajectory of this remote control device is inverted around an arbitrary axis on the plane, the moving direction (trajectory) of the optical signal before the inversion is reversed. It is different from the moving direction (trajectory) of the subsequent optical signal. Therefore, when the optical signal transmitted from the remote control device is reflected by the object and received by the light receiving surface of the video processing device, the moving direction (trajectory) of the optical signal on the light receiving surface is the moving direction of the light emitting unit. It is different from (trajectory).

  On the other hand, when the optical signal transmitted from the remote control device is received by the light receiving surface of the video processing device without being reflected by the object, the movement direction (trajectory) of the optical signal on the light receiving surface is the movement of the light emitting unit. Equal to direction (trajectory).

  Therefore, the determination unit of the video processing device can easily and reliably determine the difference in the transmission path of the optical signal by comparing the moving direction of the optical signal on the light receiving surface with the moving direction of the light emitting unit. it can.

  (9) A transmission / reception system according to a third invention includes an operated device and a remote operation device that remotely operates the operated device using an optical signal, and the remote operation device is operated based on an operation of a user. An operation signal generation means for generating an operation signal for operating the operation apparatus; and an optical signal transmission means for converting the operation signal generated by the operation signal generation means into an optical signal and transmitting the optical signal to the operated apparatus. The optical signal transmitted from the operating device is different from the mode in which the optical signal is not reflected from the object and the mode in which the optical signal is reflected from the object. The operated device includes a light receiving unit that receives the optical signal transmitted from the remote operating device. And determining means for determining whether the optical signal transmitted from the remote control device reaches the light receiving unit without being reflected by the object based on the mode of the optical signal received by the light receiving unit.

  In this transmission / reception system, an operation signal based on a user's operation is generated by the operation signal generation means of the remote control device. The operation signal is converted into an optical signal by the optical signal transmission means and transmitted to the video processing apparatus. The optical signal transmitted from the remote control device is received by the light receiving unit of the video processing device. The determination unit of the video processing apparatus determines whether or not the optical signal transmitted from the remote control device has arrived at the light receiving unit without being reflected by the object based on the form of the optical signal received by the light receiving unit.

  Here, the optical signal transmitted from the remote control device differs in a mode when it is not reflected by an object and a mode when it is reflected by an object. Therefore, the determination unit can easily determine the difference in the transmission path of the optical signal based on the mode of the optical signal received by the light receiving unit.

  (10) The operated device is a video processing device that generates a video signal for displaying a video, and generates a video signal for displaying the video in a normal state or an inverted state based on a determination result of the determination unit. Video signal generating means may further be included.

  In this case, the video signal generation unit generates a video signal for displaying the video in a normal state or an inverted state based on the determination result of the determination unit. That is, the video processing apparatus can select and display the normal state video or the reverse video based on the determination result of the determination unit.

  For example, when the user of the remote control device views the video displayed by the video processing device through a mirror, the optical signal is transmitted to the video processing device reflected in the mirror. The optical signal transmitted from the remote control device is reflected by the mirror and then received by the video processing device. The video processing device determines that the optical signal transmitted from the remote control device is reflected by the mirror and reaches the video processing device, and displays the video in the inverted state.

  Here, the video displayed in the mirror viewed by the user of the remote control device is a video obtained by inverting the video displayed by the video processing device. Therefore, the user can see the normal image by looking at the mirror.

  On the other hand, when the user of the remote control device is directly viewing the video displayed by the video processing device, the user directly transmits an optical signal to the video processing device. The optical signal transmitted from the remote control device reaches the image processing device directly and is received. The video processing device determines that the optical signal transmitted from the remote control device has reached the video processing device directly, and displays a normal video. Accordingly, the user can view the normal state image by directly viewing the image displayed by the image processing apparatus.

  In this way, the user does not need to perform an operation for switching the display state in either case of directly viewing the image displayed by the image processing apparatus or viewing the image reflected in the mirror. Thereby, it is possible to view the video comfortably.

  (11) The optical signal transmitting means may have a light emitting surface that emits an optical signal, and the light emitting surface may have a shape that is not line symmetric with respect to an axis in any direction on the light emitting surface.

  When the shape of the light emitting surface is inverted about an arbitrary axis on the plane, the shape before the inversion and the shape after the inversion do not overlap with each other by the rotation operation and the movement operation. Therefore, when the optical signal transmitted from the remote control device is reflected by an object and received by the video processing device, the shape of the optical signal received by the video processing device can be rotated and moved And the shape of the light exit surface do not overlap.

  On the other hand, when the optical signal transmitted from the remote control device is received by the video processing device without being reflected by the object, by rotating and moving the shape of the optical signal received by the video processing device, The shape and the shape of the light exit surface can be overlapped.

  Therefore, the determination unit of the video processing apparatus can easily and reliably determine the difference in the transmission path of the optical signal by comparing the shape of the received optical signal with the shape of the light emission surface of the optical signal transmission unit. it can.

  (12) The light receiving unit has a light receiving surface that receives an optical signal emitted from the light emitting surface of the remote operation device, and the determination unit is transmitted from the remote operation device based on the shape of the optical signal on the light receiving surface. It may be determined whether or not the received optical signal reaches the light receiving unit without being reflected by the object.

  In this case, the optical signal transmitted from the remote control device is received by the light receiving surface of the video processing device. Here, when the shape of the light emitting surface of the remote control device is reversed about an arbitrary axis on the plane, the shape before the reversal and the shape after the reversal do not overlap due to the rotation operation and the movement operation. . Therefore, when the optical signal transmitted from the remote control device is reflected by an object and received by the light receiving surface of the video processing device, the shape of the optical signal on the light receiving surface can be changed even if it is rotated and moved. And the shape of the light exit surface do not overlap.

  On the other hand, when the optical signal transmitted from the remote control device is received by the light receiving surface of the video processing device without being reflected by the object, the shape of the optical signal on the light receiving surface is rotated and moved, The shape and the shape of the light exit surface can be overlapped.

  Therefore, the determination unit of the video processing apparatus easily and reliably determines the difference in the transmission path of the optical signal by comparing the shape of the optical signal on the light receiving surface with the shape of the light emitting surface of the optical signal transmission unit. be able to.

  (13) The optical signal transmission unit includes three or more light emitting units that emit optical signals, and the three or more light emitting units may not be arranged on a straight line.

  When the optical signals emitted from the three or more light emitting units are inverted about an arbitrary axis on the plane, the relative positional relationship between the three or more optical signals before the inversion and after the inversion The relative positional relationship between three or more optical signals is different. Therefore, when the optical signal transmitted from the remote control device is reflected by the object and received by the video processing device, the relative positional relationship between the three or more optical signals received by the video processing device is: This is different from the relative positional relationship between the three or more light emitting units that emit optical signals.

  On the other hand, when the optical signal transmitted from the remote control device is received by the video processing device without being reflected by the object, the relative positional relationship of the three or more optical signals received by the video processing device is: It is equal to the relative positional relationship between the three or more light emitting units that emit signals.

  Therefore, the determination unit of the image processing device compares the relative positional relationship between the three or more received light signals with the relative positional relationship between the three or more light emitting units that emit the optical signals. By doing so, it is possible to easily and reliably determine the difference in the transmission path of the optical signal.

  (14) The light receiving unit has a light receiving surface that receives three or more light signals emitted from three or more light emitting units of the remote control device, and the determination unit includes three or more light signals on the light receiving surface. Based on the positional relationship, it may be determined whether or not the optical signal transmitted from the remote control device reaches the light receiving unit without being reflected by the object.

  In this case, the optical signal transmitted from the remote control device is received by the light receiving surface of the video processing device. Here, when the optical signals emitted from the three or more light emitting units of the remote control device are inverted about an arbitrary axis on the plane, the relative positions of the three or more optical signals before the inversion are relative to each other. The relationship is different from the relative positional relationship between three or more optical signals after inversion. Therefore, when the optical signal transmitted from the remote control device is reflected by the object and received by the light receiving surface of the image processing device, the relative positional relationship between the three or more optical signals on the light receiving surface is: This is different from the relative positional relationship between the three or more light emitting units that emit optical signals.

  On the other hand, when the optical signal transmitted from the remote control device is received by the light receiving surface of the image processing device without being reflected by the object, the relative positional relationship of the three or more optical signals on the light receiving surface is: It is equal to the relative positional relationship between the three or more light emitting units that emit signals.

  Therefore, the determination unit of the video processing device is configured to determine the relative positional relationship between the three or more optical signals on the light receiving surface and the relative positional relationship between the three or more light emitting units that emit the optical signals. By comparing these, it is possible to easily and reliably determine the difference in the optical signal transmission path.

  (15) The optical signal transmission unit may include a light emitting unit that emits an optical signal, and the light emitting unit may move along a non-linear path.

  When the optical signal emitted from the light emitting unit moving on this non-linear trajectory is inverted about an arbitrary axis on the plane, the moving direction (trajectory) of the optical signal before the inversion and the optical signal after the inversion This is different from the moving direction (trajectory). Therefore, when the optical signal transmitted from the remote operation device is reflected by the object and received by the video processing device, the trajectory of the optical signal received by the video processing device is different from the trajectory of the light emitting unit.

  On the other hand, when the optical signal transmitted from the remote control device is received by the video processing device without being reflected by the object, the moving direction (trajectory) of the optical signal received by the video processing device is the moving direction of the light emitting unit Equal to (trajectory).

  Therefore, the determination means of the video processing device can easily and reliably determine the difference in the transmission path of the optical signal by comparing the movement direction (trajectory) of the received optical signal with the movement direction (trajectory) of the light emitting unit. can do.

  (16) The light receiving unit has a light receiving surface that receives an optical signal emitted from the light emitting unit of the remote control device, and the determination means is transmitted from the remote control device based on the moving direction of the optical signal on the light receiving surface. It may be determined whether or not the received optical signal reaches the light receiving unit without being reflected by the object.

  In this case, the optical signal transmitted from the remote control device is received by the light receiving surface of the video processing device. Here, when the optical signal emitted from the light emitting unit moving in the non-linear trajectory of the remote control device is inverted around an arbitrary axis on the plane, the moving direction (trajectory) of the optical signal before inversion This is different from the moving direction (trajectory) of the optical signal after inversion. Therefore, when the optical signal transmitted from the remote control device is reflected by the object and received by the light receiving surface of the video processing device, the moving direction (trajectory) of the optical signal on the light receiving surface is the moving direction of the light emitting unit. It is different from (trajectory).

  On the other hand, when the optical signal transmitted from the remote control device is received by the light receiving surface of the video processing device without being reflected by the object, the movement direction (trajectory) of the optical signal on the light receiving surface is the movement of the light emitting unit. Equal to direction (trajectory).

  Therefore, the determination unit of the video processing apparatus can easily and easily compare the optical signal transmission path by comparing the movement direction (trajectory) of the optical signal on the light receiving surface with the movement direction (trajectory) of the light emitting unit. It can be determined with certainty.

  According to the present invention, the video processing device (operated device) reaches the video processing device (operated device) without reflecting the optical signal transmitted from the remote control device by the object according to the form of the received optical signal. It is possible to easily determine whether the image processing apparatus (operated apparatus) has been reflected by the object.

  Hereinafter, a broadcast receiving system for receiving a television broadcast as an example of a transmission / reception system according to the present invention will be described with reference to the drawings.

(1) First Embodiment (a) Configuration FIG. 1 is a block diagram showing a configuration of a transmission / reception system according to a first embodiment of the present invention. In this embodiment, a case will be described in which the video processing device 300 is a television receiver that receives digital broadcasting.

  As shown in FIG. 1, the transmission / reception system 100 according to the present embodiment includes a remote operation device 200 and a video processing device 300. The video processing device 300 is connected to the antenna 400.

  The remote operation device 200 includes an operation unit 201 and an infrared signal output unit 202.

  The operation unit 201 includes a plurality of operation buttons, and outputs an operation signal when the viewer presses any one of the operation buttons.

  The infrared signal output unit 202 includes a light emitting element such as an infrared light emitting diode, and outputs an infrared signal that is pulse position modulated based on the operation signal output from the operation unit 201.

  The video processing device 300 includes a tuner 301, a demodulator 302, a TS decoder 303, an AV decoder 304, a video output unit 305, an audio output unit 306, an infrared signal light receiver 307, a signal analyzer 308, and a function controller 309.

  The tuner 301 selects a channel by selecting the frequency of the television broadcast signal input from the antenna 400, and outputs the selected signal. Note that when a channel selection signal is output from a function control unit 309 described later, the television broadcast signal is selected based on the channel selection signal.

  The demodulator 302 demodulates the signal output from the tuner 301 and outputs a transport stream (hereinafter referred to as TS) compliant with the MPEG (Moving Picture Experts Group) standard.

  The TS decoder 303 performs a filtering process based on the MPEG standard on the TS output from the demodulator 302, and separates a video stream, an audio stream, a data broadcast-related packet, and the like.

  The AV decoder 304 decodes the video stream and audio stream output from the TS decoder 303, and outputs video data and audio data.

  The video output unit 305 includes a display panel such as a liquid crystal display or a plasma display, and displays the video data output from the AV decoder 304 as a video. The video output unit 305 displays a normal video when a normal video signal described later is output from the function control unit 309, and displays a reverse video signal described later from the function control unit 309. , Display the image horizontally reversed. Details will be described later.

  The audio output unit 306 includes an audio output device such as a speaker, and outputs audio data output from the AV decoder 304 as audio.

  The infrared signal light receiving unit 307 includes a plurality of photosensitive elements, receives the infrared signal output from the infrared signal output unit 202, and outputs an electrical signal based on the infrared signal. Details of the infrared signal light receiving unit 307 will be described later.

  The signal analysis unit 308 demodulates the electrical signal output from the infrared signal light receiving unit 307 and outputs an operation signal. Further, the signal analysis unit 308 outputs a normal signal or a reflection signal based on the electrical signal output from the infrared signal light receiving unit 307. Details of the normal signal and the reflected signal will be described later.

  The function control unit 309 outputs, for example, a channel selection signal based on the operation signal output by the signal analysis unit 308. The function control unit 309 outputs a normal video signal when the signal analysis unit 308 generates a normal signal, and outputs an inverted video signal when the signal analysis unit 308 generates a reflection signal.

  Note that the signal analysis unit 308 and the function control unit 309 may be realized by a microcomputer and its control program, or either one or both may be realized by hardware such as an electronic circuit.

(B) Infrared signal Next, the infrared signal output from the remote control device 200 will be described in detail.

  2 and 3 are diagrams showing a relationship between the remote control device 200 and the infrared signal light receiving unit 307. FIG. 2 shows a case where the infrared signal output from the remote operation device 200 directly reaches the infrared signal light receiving unit 307, and FIG. 3 shows that the infrared signal output from the remote operation device 200 is reflected by the mirror 500. The case where the infrared signal light receiving unit 307 is reached later is shown.

  As shown in FIGS. 2 and 3, a light emitting element LD which is a part of the infrared signal output unit 202 of FIG. 1 is provided on one end side of the remote control device 200. The light emitting surface of the light emitting element LD has a planar shape that is not line symmetric with respect to any axis on the surface (hereinafter referred to as a non-axisymmetric shape). When the non-symmetrical shape is reversed about an arbitrary axis on the plane, the non-symmetrical shape before the inversion and the non-symmetrical shape after the inversion are not overlapped by the rotation operation and the moving operation. In the present embodiment, the light emission surface of the light emitting element LD has the shape of an L-shaped arrow. Hereinafter, the shape of the light emitting surface of the light emitting element LD is simply abbreviated as the shape of the light emitting element LD.

  The infrared signal light receiving unit 307 includes a convex lens 31 and a photosensitive screen 32 provided at a position facing the convex lens 31. The photosensitive screen 32 is formed by a plurality of photosensitive elements (not shown) arranged in a matrix.

  When the viewer presses one of the operation buttons on the operation unit 201 of the remote control device 200, an infrared signal is output from the light emitting element LD of the infrared signal output unit 202. 2 and 3, the infrared signal reaching the convex lens 31 is shown as an infrared signal IRS. The infrared signal IRS transmitted from the light emitting element LD to the infrared signal light receiving unit 307 passes through the convex lens 31 and is then projected onto the photosensitive screen 32. At this time, the infrared signal IRS is inverted vertically and horizontally by the convex lens 31.

  2 and 3, the shape 21 of the light emitting element LD, the shape 22 and the shape 24 of the cross section perpendicular to the traveling direction of the infrared signal IRS (FIG. 3), and the shape of the image 33 projected onto the photosensitive screen 32. 23 (FIG. 2) and the shape 25 (FIG. 3) are shown enlarged. Further, all of these shapes 21 to 25 are shapes seen from the transmitting side toward the receiving side along the traveling direction of the infrared signal IRS.

  Hereinafter, a case where the infrared signal IRS directly reaches the infrared signal light receiving unit 307 and a case where the infrared signal IRS reaches the infrared signal light receiving unit 307 after being reflected by an object such as a mirror will be described in detail.

  First, a case where the infrared signal IRS directly reaches the infrared signal light receiving unit 307 will be described. As shown in FIG. 2, when the infrared signal IRS directly reaches the infrared signal light receiving unit 307, the infrared signal IRS reaches the infrared signal light receiving unit 307 while maintaining the same shape 22 as the shape 21 of the light emitting element LD.

  As described above, the infrared signal IRS that has reached the infrared signal light receiving unit 307 is inverted vertically and horizontally by the convex lens 31 and projected onto the photosensitive screen 32. Therefore, the image 33 projected on the photosensitive screen 32 has a shape 23 obtained by rotating the shape 22 around the optical axis by 180 degrees.

  Next, a case where the infrared signal IRS output from the light emitting element LD reaches the infrared signal light receiving unit 307 after being reflected by a mirror will be described. As shown in FIG. 3, the infrared signal IRS maintains the shape 22 until it reaches the mirror 500, but becomes a shape 24 that is reversed left and right by being reflected by the mirror 500. Thereafter, the infrared signal IRS reaches the infrared signal light receiving unit 307 while maintaining the shape 24.

  The infrared signal IRS that has reached the infrared signal light receiving unit 307 is inverted vertically and horizontally by the convex lens 31 and projected onto the photosensitive screen 32 as described above. Accordingly, the image 33 projected on the photosensitive screen 32 has a shape 25 obtained by rotating the shape 24 around the optical axis by 180 degrees. In the example of FIG. 3, the shape 25 is a shape 21 that is vertically inverted.

  Here, in the comparison of two shapes, if one shape is enlarged or reduced at the same ratio in all directions and rotated and moved so that one shape matches the other shape, the two shapes are equal. Shall. Also, in comparing two shapes, if one shape is enlarged or reduced in the same ratio in all directions and rotated and moved, if one shape does not match the other shape, the two shapes are different And

  A shape 23 in FIG. 2 is obtained by rotating the shape 21 around the optical axis. That is, in FIG. 2, the shape 23 of the image 33 is equal to the shape 21 of the light emitting element LD.

  On the other hand, the shape 25 in FIG. 3 is obtained by inverting the shape 21 upside down as described above. That is, in FIG. 3, the shape 25 of the image 33 is different from the shape 21 of the light emitting element LD.

  In the transmission / reception system 100 according to the present embodiment, the infrared signal light receiving unit 307 outputs image data corresponding to the image 33 on the photosensitive screen 32. The signal analysis unit 308 stores in advance image data representing the shape 21 of the light emitting element LD. The signal analyzing unit 308 is configured to match the shapes 23 and 25 of the image 33 on the photosensitive screen 32 and the shape 21 of the light emitting element LD by pattern matching using the image data output from the infrared signal light receiving unit 307 and the image data stored in advance. Are equal to each other, and based on the determination result, it is determined whether the infrared signal IRS has reached the infrared signal light receiving unit 307 directly or after having been reflected by a mirror or the like.

  That is, when the shape of the image 33 projected onto the photosensitive screen 32 and the shape 21 of the light emitting element LD are equal, the signal analysis unit 308 determines that the infrared signal IRS has reached the infrared signal light receiving unit 307 directly, A normal signal is output. On the other hand, when the shape of the image 33 and the shape 21 of the light emitting element LD are different, the signal analysis unit 308 determines that the infrared signal IRS has reached the infrared signal light receiving unit 307 after being reflected by a mirror or the like, and the reflected signal Is output.

  When the signal analysis unit 308 outputs a normal signal, the function control unit 309 outputs a normal video signal. Thereby, the video output unit 305 displays a normal video on the display panel. On the other hand, when the reflected signal is output by the signal analysis unit 308, the function control unit 309 outputs an inverted video signal. Accordingly, the video output unit 305 displays the normal video on the display panel by inverting the left and right.

(C) Effects of this Embodiment As described above, in the transmission / reception system 100 according to this embodiment, the infrared signal IRS is based on the shape of the image 33 projected on the photosensitive screen 32 of the infrared signal light receiving unit 307. Can be determined. Then, based on the determination result, it is possible to determine whether to display a normal video on the display panel of the video processing device 300 or to display a video that is horizontally reversed.

  In this case, when the viewer directly views the video displayed on the display panel, the remote control device 200 is pointed at the video processing device 300 and the operation button is pressed to display the normal video on the display panel. Any operation (for example, channel selection) can be performed. Further, when the viewer sees an image reflected in the mirror 500, the remote control device 200 is pointed at the mirror 500, and an operation button is pressed to perform an arbitrary operation while displaying the inverted image on the display panel. be able to.

  That is, according to the present embodiment, the viewer performs an operation for switching the display state in both cases of directly viewing the video displayed on the display panel and viewing the video displayed on the mirror 500. There is no need. Thereby, a television broadcast program can be viewed comfortably.

  Further, it is not necessary to provide the remote operation device 200 with a button for switching the display state. Thereby, the configuration of the remote control device 200 can be simplified, and the manufacturing cost can be reduced.

(D) Other Examples of Light-Emitting Element LD In this embodiment, the light-emitting element LD has an L-shaped arrow shape. However, the present invention is not limited to this, and the light-emitting element LD has other non-axisymmetric shapes. May be.

  For example, the key shape shown in FIG. 4 has a non-axisymmetric shape. In this case, when the key shape is inverted about an arbitrary axis, the key shape before the inversion and the key shape after the inversion do not overlap due to rotation and movement. Therefore, the light emitting element LD may have the hook shape of FIG. On the other hand, for example, a T shape, a U shape, an isosceles triangle, a rectangle, and the like are line symmetric with respect to a certain axis. For example, when the T-shape is inverted about an arbitrary axis, the T-shape before inversion and the T-shape after inversion overlap each other due to rotation and movement. Therefore, a line-symmetric shape cannot be used for the light emitting surface of the light emitting element LD.

  Further, instead of forming the light emitting element LD in a non-symmetrical shape, a shielding sheet having a non-symmetrical slit may be disposed on the light emitting surface of the light emitting element LD.

(2) Second Embodiment Hereinafter, a transmission / reception system according to a second embodiment of the present invention will be described. The transmission / reception system according to the second embodiment is different from the transmission / reception system 100 according to the first embodiment in the following points.

  5 and 6 are diagrams showing the relationship between the remote control device 200 and the infrared signal light receiving unit 307 in the second embodiment. 5 shows a case where the infrared signal IRS output from the remote operation device 200 directly reaches the infrared signal light receiving unit 307, and FIG. 6 shows that the infrared signal IRS output from the remote operation device 200 is a mirror 500. The case where the infrared signal light receiving unit 307 is reached after reflection is shown.

  As shown in FIGS. 5 and 6, the remote control device 200 is provided with a light emitting element group LDG including three light emitting elements LD1 to LD3. The infrared signal IRS is formed by an infrared signal L1 output from the light emitting element LD1, an infrared signal L2 output from the light emitting element LD2, and an infrared signal L3 output from the light emitting element LD3. On the photosensitive screen 32, an image IM1 of an infrared signal L1, an image IM2 of an infrared signal L2, and an image IM3 of an infrared signal L3 are projected.

  The light emitting elements LD1 to LD3 are arranged so as not to be aligned on a straight line. Hereinafter, an arrangement in which at least one of the light emitting elements LD1 to LD3 is not arranged on a straight line is referred to as a non-linear arrangement. In the present embodiment, the light emitting elements LD1 to LD3 are arranged at the vertices of a right-angled isosceles triangle.

  When the infrared signal IRS output from the light emitting element group LDG reaches the infrared signal light receiving unit 307 directly, the infrared signal IRS is inverted vertically and horizontally by the convex lens 31 to the photosensitive screen 32 as in the case described with reference to FIG. Projected. In this case, as shown in FIG. 5, the infrared signals L1 to L3 are projected onto the photosensitive screen 32 as images IM1 to IM3 while maintaining the relative positional relationship between the light emitting elements LD1 to LD3.

  On the other hand, when the infrared signal IRS output from the light emitting element group LDG reaches the infrared signal light receiving unit 307 after being reflected by the mirror 500, the infrared signal IRS is left and right by the mirror 500 as in the case described with reference to FIG. After being inverted, it is further inverted vertically and horizontally by the convex lens 31 and projected onto the photosensitive screen 32. In this case, as shown in FIG. 6, the relative positional relationship between the images IM1 to IM3 projected on the photosensitive screen 32 is different from the relative positional relationship between the light emitting elements LD1 to LD3.

  In the present embodiment, based on the positional relationship between each of the images IM1 to IM3, it is determined whether the infrared signal IRS has reached the infrared signal light receiving unit 307 directly or after being reflected by a mirror or the like. . Hereinafter, it explains in detail using a drawing.

  7 shows the relationship between the light emitting element group LDG and the image 33 in FIG. 5, and FIG. 8 shows the relationship between the light emitting element group LDG and the image 33 in FIG. 7A and 8A show the light emitting element group LDG, and FIGS. 7B and 8B show the image 33. FIG.

  7 and 8, a vector from the light emitting element LD1 to the light emitting element LD2 is a vector A1, a vector from the light emitting element LD2 to the light emitting element LD3 is a vector B1, and a vector from the image IM1 to the image IM2 is a vector. The vector from the image IM2 to the image IM3 is indicated as a vector B2 as A2.

  In FIG. 7, the direction of the vector B1 is 90 degrees to the left with respect to the direction of the vector A1. Similarly, the direction of vector B2 is 90 degrees to the left with respect to the direction of vector A1. That is, in FIG. 7, the direction of the vector B1 with respect to the vector A1 is equal to the direction of the vector B2 with respect to the vector A2.

  On the other hand, in FIG. 8, the direction of the vector B2 is 90 degrees to the right with respect to the direction of the vector A1. That is, the direction of the vector B1 with respect to the vector A1 is different from the direction of the vector B2 with respect to the vector A2.

  Here, the direction of the vector B1 with respect to the vector A1 is stored in advance in the storage unit in the signal analysis unit 308. As described above, the photosensitive screen 32 (FIG. 5) is formed by a plurality of photosensitive elements arranged in a matrix. In the present embodiment, the signal analysis unit 308 reads the coordinates of the images IM1 to IM3 from the electrical signals output from the photosensitive elements that receive the infrared signals L1 to L3, and calculates the direction of the vector B2 with respect to the vector A2. Then, the signal analysis unit 308 compares the direction (the direction of the vector B2 with respect to the vector A1) stored in the storage unit in advance with the calculated direction (the direction of the vector B2 with respect to the vector A2).

  When the direction of the vector B2 with respect to the vector A2 is equal to the direction of the vector B1 with respect to the vector A1, the signal analysis unit 308 determines that the infrared signal IRS has reached the infrared signal light receiving unit 307 directly, and outputs a normal signal. On the other hand, if the direction of the vector B2 with respect to the vector A2 is different from the direction of the vector B1 with respect to the vector A1, the signal analysis unit 308 determines that the infrared signal IRS has reached the infrared signal light receiving unit 307 after being reflected by a mirror or the like, A reflected signal is output.

  When the signal analysis unit 308 outputs a normal signal, the function control unit 309 outputs a normal video signal. Thereby, the video output unit 305 displays a normal video on the display panel. On the other hand, when the reflected signal is output by the signal analysis unit 308, the function control unit 309 outputs an inverted video signal. Accordingly, the video output unit 305 displays the normal video on the display panel by inverting the left and right.

  As described above, in the present embodiment, by detecting the relative positional relationship between the images IM1 to IM3, a normal video is displayed on the display panel of the video processing device 300, or an inverted video is displayed. Decide whether to display.

  The comparison between the vectors A1 and B1 and the vectors A2 and B2 can be performed as follows, for example.

  First, the element of vector A1 is (a11, a12), the element of vector B1 is (b11, b12), the element of vector A2 is (a21, a22), and the element of vector B2 is (b21, b22). .

Further, an expression representing the relationship between the vector A1 and the vector B1 is D1 = a11 × b12−b11 × b12 (1)
And an expression representing the relationship between the vector A2 and the vector B2 is D2 = a21 × b22−b21 × b22 (2)
And

  When defined as described above, in the example of FIG. 7, since the direction of the vector B1 with respect to the vector A1 is the left direction, the value D1 of the expression (1) is positive. Further, since the direction of the vector B2 with respect to the vector A2 is also the left direction, the value D2 of the expression (2) is also positive.

  On the other hand, in the example of FIG. 8, since the direction of the vector B2 with respect to the vector A2 is rightward, the value D2 of the expression (2) is negative.

  That is, when both the value D1 in the expression (1) and the value D2 in the expression (2) are both positive or negative, it is determined that the infrared signal IRS has reached the infrared signal light receiving unit 307 directly, and (1 When one of the values D1 and D2 of () and (2) is positive and the other is negative, it is determined that the infrared signal IRS has reached the infrared signal light receiving unit 307 after being reflected by a mirror or the like. be able to.

  In the present embodiment, any one of the three infrared signals L1 to L3 output from the light emitting elements LD1 to LD3 serves to transmit the operation signal of the remote control device 200 to the infrared signal light receiving unit 307. I'm in charge. In this case, since only one of the three infrared signals L1 to L3 has to be pulse position modulated, the configuration of the infrared signal output unit 202 can be simplified. Thereby, the manufacturing cost of the remote control device 200 can be reduced.

  In the present embodiment, the light emitting elements LD1 to LD3 are arranged at the vertices of a right isosceles triangle. However, the present invention is not limited to this, and the light emitting elements LD1 to LD3 may have other non-linear arrangements. Good.

  For example, the light emitting elements LD1 to LD3 may be arranged at the vertices of an arbitrary triangle other than a right-angled isosceles triangle.

  Further, the number of light emitting elements is not limited to 3, and any plurality of light emitting elements of 4 or more may be used. In this case, some of the plurality of light emitting elements may be arranged on a straight line, but at least one light emitting element is arranged at a position off the straight line.

(3) Third Embodiment Hereinafter, a transmission / reception system according to a third embodiment of the present invention will be described. The transmission / reception system according to the third embodiment is different from the transmission / reception system 100 according to the first embodiment in the following points.

  9 and 10 are diagrams showing the relationship between the remote control device 200 and the infrared signal light receiving unit 307 in the third embodiment. 9 shows a case where the infrared signal IRS output from the remote operation device 200 directly reaches the infrared signal light receiving unit 307, and FIG. 10 shows that the infrared signal IRS output from the remote operation device 200 is a mirror 500. The case where the infrared signal light receiving unit 307 is reached after reflection is shown.

  As shown in FIGS. 9 and 10, the remote control device 200 is provided with a light emitting element so that the light emitting point LD4 moves in a non-linear manner. In the present embodiment, the light emitting element is provided so that the light emitting point LD4 moves so as to draw a circular orbit at a predetermined speed.

  For example, the light emitting point LD4 can be moved clockwise by sequentially turning on the plurality of light emitting elements arranged in a ring in the clockwise direction. Further, the light emitting point LD4 can be moved clockwise by disposing the light emitting element on the back of the disk-shaped member having holes and rotating the disk-shaped member.

  When the infrared signal IRS output from the light emitting point LD4 directly reaches the infrared signal light receiving unit 307, the infrared signal IRS is inverted vertically and horizontally by the convex lens 31 and projected onto the photosensitive screen 32, as described in FIG. Is done. In this case, the image IM4 projected on the photosensitive screen 32 moves so as to draw a circular orbit in the clockwise direction like the light emitting point LD4.

  On the other hand, when the infrared signal IRS output from the light emitting point LD4 reaches the infrared signal light receiving unit 307 after being reflected by the mirror 500, the infrared signal IRS is reversed left and right by the mirror 500 as in the case described with reference to FIG. After that, the image is further inverted vertically and horizontally by the convex lens 31 and projected onto the photosensitive screen 32. In this case, the image IM4 projected on the photosensitive screen 32 moves so as to draw a circular orbit counterclockwise.

  In the present embodiment, when the moving direction (trajectory) of the image IM4 is the same as the moving direction (trajectory) of the light emitting point LD4, it is determined that the infrared signal IRS has directly reached the infrared signal light receiving unit 307, and the image IM4 When the moving direction is different from the moving direction of the light emitting point LD4, it is determined that the infrared signal IRS has arrived after being reflected by a mirror or the like. Hereinafter, the determination method will be described in detail with reference to the drawings.

  FIG. 11 is a diagram for explaining a method of determining the moving direction of the image IM4.

  In the present embodiment, the cycle of the circular motion of the light emitting point LD4 (FIG. 9) is stored in advance in the storage unit in the signal analysis unit 308 (FIG. 1). Then, the signal analysis unit 308 detects the coordinates of the image IM4 every 1/3 period of the stored period.

  For example, as shown in FIG. 11A, when an image IM4 moving clockwise is detected in order at position P1, position Q1, and position R1, the direction of vector B from position Q1 to position R1 is The direction is left with respect to the vector A from P1 to the position Q1.

  On the other hand, as shown in FIG. 11B, when the image IM4 moving counterclockwise is detected in order at the position P2, the position Q2, and the position R2, the direction of the vector B from the position Q1 to the position R1 is The direction is left with respect to the vector A from P1 to the position Q1.

  In the present embodiment, the signal analysis unit 308 (FIG. 1) detects whether the image IM4 is moving clockwise by detecting the direction of the vector B relative to the vector A based on the above relationship, or Then, it is determined whether or not it is moving counterclockwise. When the moving direction (trajectory) of the light emitting point LD4 (FIG. 9) and the moving direction (trajectory) of the image IM4 are equal, the signal analysis unit 308 has directly reached the infrared signal light receiving unit 307. And a normal signal is output. On the other hand, when the moving direction of the light emitting point LD4 is different from the moving direction of the image IM4, the signal analyzing unit 308 determines that the infrared signal IRS has arrived after reflecting the infrared signal IRS, and outputs the reflected signal. To do.

  When the signal analysis unit 308 outputs a normal signal, the function control unit 309 outputs a normal video signal. Thereby, the video output unit 305 displays a normal video on the display panel. On the other hand, when the reflected signal is output by the signal analysis unit 308, the function control unit 309 outputs an inverted video signal. Accordingly, the video output unit 305 displays the normal video on the display panel by inverting the left and right.

  As described above, in the present embodiment, whether to display a normal video or an inverted video on the display panel of the video processing device 300 is determined based on the moving direction of the image IM4. .

  The direction of the vector B with respect to the vector A can be detected by a method similar to the method described with reference to FIGS.

  In the above description, the light emitting point LD4 moves clockwise. However, the light emitting point LD4 may move counterclockwise.

  Further, the orbit of the light emitting point LD4 is not limited to the circular orbit, and the light emitting point LD4 may be moved so as to draw a non-linear orbit.

  Further, the number of detections of the image IM4 detected per cycle is not limited to three, and the position of the image IM4 may be detected any number of times.

  In the above, the locus of the light emitting point LD4 and the locus of the image IM4 are compared by detecting the direction of the vector B with respect to the vector A. However, by increasing the number of detections of the image IM4, the locus of the image IM4 is changed. It may be detected more accurately. As in the first embodiment, when the trajectory of the image IM4 overlaps the trajectory of the light emitting point LD4 by the rotation operation and the movement operation, it is determined that the infrared signal IRS has reached the infrared signal light receiving unit 307 directly. If they do not overlap, it may be determined that the infrared signal IRS has reached the infrared signal light receiving unit 307 after being reflected by the mirror 500.

  In addition, it is preferable that the light emitting point LD4 is set so as not to move a plurality of times by overlapping a part or all of the movement route in one cycle of movement. In this case, since the partial vector of the original movement path and the partial vector of the inverted movement path do not match, the signal analysis unit 308 determines whether the infrared signal IRS has reached the infrared signal light receiving unit 307 directly. Alternatively, it is possible to more accurately determine whether the infrared signal IRS has reached the infrared signal light receiving unit 307 after being reflected by a mirror or the like.

  Therefore, for example, when the light emitting point LD4 is moved so as to draw "W", it is preferable that the light emitting point LD4 is moved only from one end to the other end without reciprocating. When moving from one end to the other and then reciprocating from the other end to the other end, there is a possibility that the vector of the forward path of “W” and the vector of the reverse path of “W” reversed. is there.

(4) Other Embodiments In the above embodiment, the case where an infrared signal is output from the remote operation device 200 has been described. However, the optical signal output from the remote operation device 200 is not limited to an infrared signal, and an image is displayed. Other optical signals may be used as long as an operation signal can be transmitted to the processing apparatus 300. For example, an optical signal composed of laser light can be used.

  In the above-described embodiment, the case where the video processing device 300 is a television receiver that receives digital broadcasting has been described. However, the present invention is not limited to this, and the video processing device operated by the remote operation device 200 is analog broadcasting. May be a television receiver.

  Further, the video processing device operated by the remote operation device 200 may be a DVD (Digital Versatile Disc) playback device, a DVD recording / playback device, a hard disk recording / playback device, or a set top box that outputs a video signal. In this case, the video output unit 305 and the audio output unit 306 in FIG. 1 do not have a display panel and a speaker, but have a video output terminal that outputs a video signal and an audio output terminal that outputs an audio signal. The video output terminal and the audio output terminal are connected to the video input terminal and the audio input terminal of the television receiver. Alternatively, the video output terminal is connected to the video input terminal of the display panel. The video output unit 305 outputs a video signal for displaying a normal video on the display panel when a normal signal is output from the signal analysis unit 308, and is displayed when a reflected signal is output from the signal analysis unit 308. Outputs a video signal for displaying a horizontally reversed video on the panel.

  Further, in the above-described embodiment, the case where the image is displayed by being horizontally reversed has been described. However, the image may be vertically inverted and displayed.

(5) Correspondence between each constituent element of claim and each part of the embodiment Hereinafter, an example of correspondence between each constituent element of the claim and each part of the embodiment will be described, but the present invention is limited to the following example. Not.

  In the above embodiment, the operation unit 201 corresponds to the operation signal generation unit, the infrared signal output unit 202 corresponds to the optical signal transmission unit, and the light emission surface of the light emitting element LD is the light emission surface that emits the optical signal. Correspondingly, the light emitting elements LD1 to LD3 correspond to three or more light emitting parts that emit optical signals, the light emitting point LD4 corresponds to a light emitting part that moves in a non-linear path, and the infrared signal light receiving part 307 is a light receiving part. The signal analysis unit 308 corresponds to a determination unit, the AV decoder 304, the video output unit 305, and the function control unit 309 correspond to a video signal generation unit, and the photosensitive screen 32 corresponds to a light receiving surface.

  The present invention can be effectively used for a television receiver, a personal computer, a DVD recorder, a projector, and the like.

The block diagram which shows the structure of the transmission / reception system which concerns on the 1st Embodiment of this invention Diagram showing the relationship between the remote control device and infrared signal receiver Diagram showing the relationship between the remote control device and infrared signal receiver The figure which shows the other example of the shape of a light emitting element The figure which showed the relationship between the remote control apparatus and infrared signal light-receiving part in 2nd Embodiment The figure which showed the relationship between the remote control apparatus and infrared signal light-receiving part in 2nd Embodiment The figure which showed the relationship between the light emitting element group and image in FIG. The figure which showed the relationship between the light emitting element group in FIG. 6, and an image The figure which showed the relationship between the remote control apparatus and infrared signal light-receiving part in 3rd Embodiment The figure which showed the relationship between the remote control apparatus and infrared signal light-receiving part in 3rd Embodiment The figure for demonstrating the determination method of the moving direction of an image

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Transmission / reception system 200 Remote operation device 201 Operation part 202 Infrared signal output part 300 Television receiver 305 Image | video output part 307 Infrared signal light-receiving part 308 Signal analysis part 309 Function control part 400 Antenna IRS, L1-L3 Infrared signal LD, LD1- LD4 light emitting element IM1-IM4 image

Claims (16)

A remote control device for remotely operating a video processing device capable of generating a video signal for displaying a video in a normal state and an inverted state using an optical signal,
Operation signal generating means for generating an operation signal for operating the video processing device based on a user's operation;
An optical signal transmission unit that converts the operation signal generated by the operation signal generation unit into an optical signal and transmits the optical signal to the video processing device;
A mode of an optical signal received by the video processing device without being reflected by the object from the optical signal transmitting unit and a mode of an optical signal received by the video processing device reflected by the object from the optical signal generating unit Remote control device characterized by being different. The optical signal transmitting means has a light emitting surface for emitting an optical signal,
The remote control device according to claim 1, wherein the light emitting surface has a shape that is not line symmetric with respect to an axis in any direction on the light emitting surface. The optical signal transmission means includes three or more light emitting units that emit optical signals,
The remote control device according to claim 1, wherein the three or more light emitting units are not arranged on a straight line. The optical signal transmitting means includes a light emitting unit that emits an optical signal,
The remote control device according to claim 1, wherein the light emitting unit moves along a non-linear track. An image processing device for generating a video signal for displaying a video based on an optical signal transmitted from a remote control device, wherein the optical signal transmitted from the remote control device is not reflected by an object; Unlike the case of being reflected by an object,
A light receiving unit for receiving an optical signal transmitted from the remote control device;
Determining means for determining whether or not an optical signal transmitted from the remote control device reaches the light receiving unit without being reflected by an object based on an aspect of the optical signal received by the light receiving unit;
A video processing apparatus comprising: a video signal generating unit configured to generate a video signal for displaying a video in a normal state or an inverted state based on a determination result of the determination unit. The remote operation device is the remote operation device according to claim 2,
The light receiving unit has a light receiving surface that receives an optical signal emitted from the light emitting surface of the remote control device;
6. The determination unit determines whether or not an optical signal transmitted from the remote control device reaches the light receiving unit without being reflected by an object based on a shape of an optical signal on the light receiving surface. Video processing equipment. The remote operation device is a remote operation device according to claim 3,
The light receiving unit has a light receiving surface that receives three or more optical signals emitted from the three or more light emitting units of the remote control device;
The determination means determines whether an optical signal transmitted from the remote control device has reached the light receiving unit without being reflected by an object based on a positional relationship between the three or more optical signals on the light receiving surface. The video processing apparatus according to claim 5 for determination. The remote operation device is a remote operation device according to claim 4,
The light receiving unit has a light receiving surface that receives an optical signal emitted from the light emitting unit of the remote control device;
The determination unit determines whether the optical signal transmitted from the remote control device reaches the light receiving unit without being reflected by an object based on a moving direction of the optical signal on the light receiving surface. 5. The video processing apparatus according to 5. An operated device;
A remote operation device for remotely operating the operated device using an optical signal,
The remote control device is:
An operation signal generating means for generating an operation signal for operating the operated device based on a user's operation;
Optical signal transmission means for converting the operation signal generated by the operation signal generation means into an optical signal and transmitting the optical signal to the operated device;
The optical signal transmitted from the remote control device is different from the case where it is not reflected by an object and the case where it is reflected by an object,
The operated device is:
A light receiving unit for receiving an optical signal transmitted from the remote control device;
Determining means for determining whether the optical signal transmitted from the remote control device arrives at the light receiving unit without being reflected by an object based on the mode of the optical signal received by the light receiving unit. A characteristic transmission / reception system. The operated device is a video processing device that generates a video signal for displaying a video;
A transmission / reception system further comprising: a video signal generation unit that generates a video signal for displaying a video in a normal state or an inverted state based on a determination result of the determination unit. The optical signal transmitting means has a light emitting surface for emitting an optical signal,
The transmission / reception system according to claim 9 or 10, wherein the light emission surface has a shape that is not line-symmetric with respect to an axis in any direction on the light emission surface. The light receiving unit has a light receiving surface that receives an optical signal emitted from the light emitting surface of the remote control device;
The determination unit determines whether or not an optical signal transmitted from the remote control device reaches the light receiving unit without being reflected by an object based on a shape of an optical signal on the light receiving surface. Sending and receiving system. The optical signal transmission means includes three or more light emitting units that emit optical signals,
The transmission / reception system according to claim 9 or 10, wherein the three or more light emitting units are not arranged on a straight line. The light receiving unit has a light receiving surface that receives three or more optical signals emitted from the three or more light emitting units of the remote control device;
The determination means determines whether an optical signal transmitted from the remote control device has reached the light receiving unit without being reflected by an object based on a positional relationship between the three or more optical signals on the light receiving surface. The transmission / reception system according to claim 13 for determination. The optical signal transmitting means includes a light emitting unit that emits an optical signal,
The transmission / reception system according to claim 9 or 10, wherein the light emitting unit moves along a non-linear trajectory. The light receiving unit has a light receiving surface that receives an optical signal emitted from the light emitting unit of the remote control device;
The determination unit determines whether the optical signal transmitted from the remote control device reaches the light receiving unit without being reflected by an object based on a moving direction of the optical signal on the light receiving surface. 15. The transmission / reception system according to 15.

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