JP2006080848A - Television receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a television receiver whereby a user does not need to be sensitive to a wait time when the television receiver displays a still picture. <P>SOLUTION: The television receiver includes: a tuner 11; a display device 17; and an image drawing processing circuit 14 that receives a video signal of a TV image from the tuner 11 and a video signal of a still picture from a storage medium 25, displays the TV image on the display device 17 and on-screen-displays the still picture on the TV image. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a television receiver having a function of displaying a still image stored in a digital camera, a memory card, or the like.

  Conventionally, there is a television receiver having a function of displaying a still image stored in a digital camera, a memory card, or the like. A television receiver having such a function includes, for example, a memory card insertion slot, and displays a list of still images stored in a memory card inserted by a user through a key operation or the like. It can be displayed one by one (slide display).

  However, these functions require the use of an application different from the video playback function, which is the original function of a television receiver that plays back other video such as TV and DVD, and is independent as a Photo View function. It has become a function. For this reason, the user has to switch between these two functions, which is complicated. For example, in order to check what TV programs are currently being aired while using the Photo View function, it is necessary to quit the Photo View function and then switch to the TV video playback function. Had to do. Conversely, when a TV image is being displayed and a still image is desired to be displayed, the TV image playback function (display) must be stopped and the Photo View function must be activated.

As a solution to such a problem, for example, if a memory card is inserted when the power is turned on, the application of the Photo View function is automatically started. It is proposed to display the icon on the child screen (for example, Patent Document 1).
JP 2002-135676 A

  However, even in the method proposed in Patent Document 1 described above, the still image reading time from the memory card and the still image file decoding time are not negligible, and the user switches to the Photo View function. There is a problem in that there is a waiting time until a still image is displayed.

  The present invention has been made to solve such problems, and an object of the present invention is to provide a television receiver in which the user is not aware of the waiting time when displaying a still image. And

  The television receiver according to the present invention takes in a display device, a video signal of a moving image and a video signal of a still image, displays the moving image on the display device, and also displays the still image on the moving image. Is provided with a drawing processing circuit for on-screen display. In the present invention, when a still image is displayed on a display device, a moving image and a still image are displayed simultaneously (the still image is displayed on the moving image on the screen). For example, even if it takes a certain amount of time to import a video signal of a still image from a storage medium and decode it, a video image is displayed on the display device during that time. It will not be. That is, in the past (Patent Document 1), an application that automatically starts when a still image is displayed on a display device is used. However, a certain amount of processing is required for reading or decoding image data in a storage medium. Time is required and a waiting time is generated for the user. However, in the present invention, application switching is not required, and a moving image (for example, a TV image) is continued until a still image is displayed. Since it is made to display, it does not become conscious of the waiting time for the user. Moreover, since the moving image is displayed as the background even when the still image is displayed, it is possible to enjoy the display of the still image while confirming the content of the moving image.

  In the television receiver according to the present invention, the drawing processing circuit generates a composite image obtained by performing on-screen display processing of the still image on the moving image, and displays the composite image on the display device.

  The television receiver according to the present invention includes an operation unit that inputs various operation signals, and a control unit that switches the content of the moving image displayed as a background based on the operation signal of the operation unit. Is. In the present invention, the moving image displayed as the background can be arbitrarily switched even when the still image is displayed.

  The television receiver according to the present invention includes a tuner, and the control unit adjusts the tuner based on an operation signal of the operation means, and receives a video signal of a television image from the tuner that is input to the drawing processing circuit. Switch to switch the TV image displayed on the display device. In the present invention, the tuner is adjusted based on the operation signal of the operation means so that the TV program displayed as the background on the display device can be arbitrarily switched. Therefore, the content of the arbitrary TV program is confirmed. However, it is possible to enjoy the display of still images.

  Further, in the television receiver according to the present invention, the control unit changes the video displayed on the screen on the display device from the still image to the moving image or the moving image based on the operation signal of the operation means. A control signal for switching from video to the still image is output to the drawing processing circuit, and the drawing processing circuit switches the video to be displayed on-screen on the display device based on the control signal. In the present invention, for example, when a moving image is displayed as a background image and a still image is displayed on the front side, by operating the operation means, the opposite state, for example, a still image is displayed as a background image. By displaying the moving image on the near side, it is possible to enjoy the moving image.

  In the television receiver according to the present invention, the control unit captures image data from a recording medium and outputs a video signal of a thumbnail image to the drawing processing circuit, and the drawing processing circuit sends the image signal to the display device. While displaying a moving image, the thumbnail image is displayed on-screen. In the present invention, it is possible to display a thumbnail image as an on-screen display as a still image with a moving image as a background.

  Further, in the television receiver according to the present invention, the control unit is selected when one of the thumbnail images displayed on the display device is selected based on the operation signal of the operation means. The image data of the still image read from the recording medium is output to the drawing processing circuit, and the drawing processing circuit displays one still image on the display device.

  The television receiver according to the present invention further includes an audio output unit that inputs an audio signal corresponding to the moving image and outputs sound corresponding to the moving image regardless of a display mode of the moving image. Is. In the present invention, since the moving image can be obtained regardless of the display mode (background or near side display), the moving image can be enjoyed even under restricted circumstances.

Embodiment 1. FIG.
FIG. 1 is a block diagram showing a configuration of a digital broadcast receiving apparatus according to Embodiment 1 of the present invention. The digital broadcast receiver 1 includes an antenna 10, a tuner 11, a demultiplexer 12, a video signal processing circuit 13, a drawing processing circuit 14, a frame memory (field memory) 15, a video output circuit 16, a display device 17, and an audio signal processing circuit. 18, an amplifier 19, a speaker 20, an operation unit 21, an interface (IF) 22, a remote controller 23, a receiving unit 24, a storage medium (for example, a memory card) 25, an interface (IF) 26, and a control unit 28. The tuner 11, demultiplexer 12, video signal processing circuit 13, audio signal processing circuit 18, interface 22, receiving unit 24, interface 26 and control unit 28 are connected via a bus 27. The whole is controlled. The control unit 28 includes a CPU 281, a ROM 282 in which programs to be executed by the CPU 281 and fixed data are written, and a RAM 283 that functions as a work area of the CPU 281. The RAM 283 stores a flag 283a that is set / reset based on the operation of the Photo key described later. Note that the operation unit 21 and the remote controller 23 correspond to the operation means of the present invention, and a key for operating the Photo View function is provided in addition to a normal television key. To do.

  FIG. 2 is a front view of the remote controller 23 of FIG. 1 for operating the Photo View function in addition to the normal keys, that is, the channel key 23a, the shift key 23b, the Enter key 23c, the numeric key 23d, and the like. The Photo key 23e is provided.

  In the digital broadcast receiver 1 of FIG. 1, when the user selects a channel to be viewed by operating the operation unit 21 or the remote controller 23, a channel selection signal corresponding to the channel is generated, and the control unit 28 outputs the channel selection signal. Is received via the interface 22 or the receiving unit 24 and the bus 27, and the control unit 28 outputs a channel selection signal to the tuner 11 based on the channel selection signal, so that a channel corresponding to the channel selection signal can be obtained by the tuner 11. Is set. The antenna 10 includes a frequency converter, receives a digital broadcast signal transmitted from, for example, CS (Communication Satellite), and outputs the frequency-converted signal to the tuner 11. The tuner 11 includes a demodulation circuit, a deinterleave circuit, an error correction circuit, and the like, and performs a process of extracting a signal having a specific frequency from a high-frequency digital modulation signal including video / audio data. That is, a process of selecting one from a plurality of transponders for digital broadcasting is performed. The demultiplexer (DEMUX) 12 divides the transport stream into, for example, an MPEG2 (Moving Picture Experts Group 2) video stream, an audio stream, and a PSI / SI (Program Specific Information / Service Information). The video stream is output to the video signal processing circuit 13 and the audio stream is output to the audio signal processing circuit 18. The PSI / SI is taken into the CPU 281 and processed as necessary.

  The video signal processing circuit 13 has a built-in video decoder and the like, decodes the input variable length code to obtain the quantization coefficient and motion vector, performs drawing by performing motion compensation control based on inverse DCT transform and motion vector, etc. Output to the processing circuit 14. The drawing processing circuit 14 is a circuit that generates a video signal to be displayed on the display device 17 based on, for example, a video signal of a TV video from the video signal processing circuit 13, and generates a frame image for each frame in the frame memory 15. The frame image (video signal) is read and output to the video output circuit 16. The video output circuit 16 receives the video signal from the drawing processing circuit 14 and performs D / A conversion. For example, the video output circuit 16 converts the video signal into a composite video signal and outputs the composite video signal to the display device 17. indicate.

  The audio signal processing circuit 18 incorporates an audio decoder and the like, decodes the input encoded signal to generate an audio signal (audio data), further D / A converts the audio signal, for example, right ( R) An analog signal of sound and an analog signal of left (L) sound are generated and output to the amplifier 19. The amplifier 19 amplifies the analog signals of the right (R) sound and the left (L) sound and outputs them to the speaker 20, and sound can be obtained from the speaker 20.

  In the state where the TV image of the channel selected by the user operating the operation unit 21 or the remote controller 23 is displayed on the display device 17 and the sound of the channel is obtained from the speaker 20 as described above, for example, When the user operates the remote controller 23 to perform a key operation for obtaining a still image (operation of the Photo key 23e), the control unit 28 captures the operation signal via the interface 22, decodes it, and stores it in the storage medium 25. The stored still image data is read and output to the drawing processing circuit 14 via the bus 27, and the still image is displayed on the display device 17. Details of the processing at this time will be described with reference to the flowchart of FIG.

  FIG. 3 is a flowchart showing the process of the digital broadcast receiver 1 of FIG. 1, and the process of this flowchart is performed at predetermined time intervals. The CPU 281 determines whether only the TV video is displayed (S11). The determination is based on a flag 283a that is set or reset in accordance with the operation of the Photo key 23e. If it is determined that the flag 283a is reset and only the TV image is displayed, that is, if the TV image captured by the tuner 11 is displayed, then the Photo key 23e is pressed. It is determined whether it has been operated (operated) (S12). Here, when the Photo key 23e is not pressed, it is assumed that the display mode is a normal TV image, and the process here ends. That is, the drawing processing circuit 14 takes in the video signal from the video signal processing circuit 13, draws a frame image in the frame memory 15, and displays the drawn frame image (video signal) via the video output circuit 16 on the display device 17. The process of outputting to the TV and displaying the TV video is continued.

  When the Photo key is pressed, the CPU 281 sets the flag 283a (S13), reads and decodes the image signal of the thumbnail image from the storage medium 25, and outputs the video signal to the drawing processing circuit 14 (S14). . The drawing processing circuit 14 takes in the video signal of the thumbnail image in addition to the video signal of the TV video, and draws on the frame memory 15 a composite image obtained by performing on-screen display processing (OSD processing) of the thumbnail image on the TV video. (S15, S16). This frame image is a composite image with a TV image as a background and a thumbnail image at the front side. The drawing processing circuit 14 outputs the frame image (video signal) to the display device 17 via the video output circuit 16 (S17). The display device 17 uses the TV video (moving video) as a background, and the thumbnail image is displayed. An on-screen display image is obtained. At this time, for example, a red frame for selecting a still image is displayed on the outer frame of an arbitrary thumbnail image.

  If it is determined in the determination process (S11) that only the TV video is not displayed, that is, the Photo key 23e has already been pressed (the flag 283a is set), and the Photo View function is activated. If it is already in operation, it is determined whether the Photo key 23e has been pressed again (S18). If the Photo key 23e has not been pressed, it is next determined whether the Enter key 23c has been pressed (S19). If the Enter key 23c has been pressed, a thumbnail image with an outer frame attached. Is read from the storage medium 25 and decoded, and the video signal is output to the drawing processing circuit 14 (S20). The drawing processing circuit 14 takes in the video signal of the thumbnail image with the outer frame in addition to the video signal, performs OSD processing, and draws the composite image (frame image) on the frame memory 15 (S15, In step S16, the frame image (video signal) is output to the display device 17 via the video output circuit 16 (S17), and the image selected above is displayed as a slide (single image display). If it is determined in the determination process (S19) that the Enter key 23c has not been pressed, it is next determined whether or not the shift key 23b has been pressed (S21). Outputs position information based on the shift key 23 b to the drawing processing circuit 14. The drawing processing circuit 14 generates an image obtained by adding an outer frame to the thumbnail image corresponding to the position information by OSD processing and writes it in the frame memory 15 (S15, S16). Further, it reads out the image via the video output circuit 16. Is displayed on the display device 17 (S17). As a result, the thumbnail image with the outer frame is changed.

 If it is determined in the above determination (S18) that the Photo key 23e has been pressed again, the flag 283a is reset (S23), and the display on the display device 17 is a normal display mode only for TV images. Return to.

  FIG. 4 is an explanatory diagram showing the relationship between the operation of the remote controller 23 and the display mode of the display device 17. For example, when a TV image captured by the tuner 11 is displayed ((a) in the figure), the video of the corresponding program is displayed on the display device 17 by operating the channel key 23a (this is a conventional technique). Is the same). In this state, when the Photo key 23e is pressed, thumbnail images are displayed with the TV video as a background (S11 to S17, FIG. 7B). In this state, when the shift key 23b is pressed, the thumbnail image to which the outer frame (red) is attached is changed according to the key operation, and the image to be selected is changed (S21, S22, FIG. 10C). When the Enter key 23c is pressed, a thumbnail image with an outer frame is selected and displayed in an enlarged manner (S19, S20, FIG. 4D). When the Photo key 23e is pressed, the Photo View function is canceled and the display mode returns to the normal TV video display (S18, S23, (a) in the figure).

  As described above, in the first embodiment, when a still image is displayed on a display device, a TV image and a still image are displayed simultaneously. For this reason, for example, an image of a still image is stored from the storage medium 25. Even if it takes a certain amount of time until the data is fetched and decoded, since the TV image is displayed on the display device 17 during that time, the waiting time is not concerned for the user. Furthermore, since the TV video is displayed as the background video even when the still image is displayed, it is possible to enjoy the display of the still image while checking the TV video. Further, the TV video displayed as the background video can be adjusted to an arbitrary TV program by adjusting the tuner 11 by operating the remote controller 23. In addition, since the audio corresponding to the TV image is output from the speaker 20 regardless of the display mode of the TV image, the TV program can be enjoyed from this point. When a video scene that is anxious appears in the TV video, the TV video is displayed by pressing the Photo key 23e (FIG. 4A), so that switching is easy.

Embodiment 2. FIG.
In the first embodiment, the example in which the still image stored in the storage medium 25 is captured and displayed on the display device 17 has been described. However, for example, the still image stored in the RAM 283 may be captured and similarly processed. it can. Moreover, although the example which starts and cancels the Photo View function by operating the Photo key 23e has been described, for example, when the storage medium 25 is inserted into the insertion slot (not shown), it is detected and the Photo View function is started. You may make it cancel the function by taking out from an insertion port.

  Further, although an example in which the Photo View function is canceled by operating the Photo key 23e has been described, for example, a still image may be displayed as a background video without being canceled. Alternatively, the display of the TV video (moving video) and the display of the still image may be alternately switched by another key operation. For example, when a TV image is displayed as a background image and a still image is displayed on-screen, a key operation is performed to perform the opposite operation, that is, for example, a still image is used as a background image and a TV image is displayed on-screen. Let Further, by operating a key, the opposite state, that is, a TV image can be displayed as a background image, and a still image can be displayed on-screen.

Embodiment 3. FIG.
In the first embodiment, an example of switching between a TV video and a thumbnail image has been described. However, the present invention is similarly applied to a case where, for example, a video signal from a DVD player or a video player is captured and displayed on a display device. . Further, although an example of a digital broadcast receiving apparatus has been described as an example of a television receiver, the same applies to an analog receiver. 1 may be any of a liquid crystal panel, a plasma display, and a CRT.

1 is a block diagram showing a configuration of a digital broadcast receiving apparatus according to Embodiment 1 of the present invention. The front view of a remote controller. The flowchart which shows the process of the digital broadcast receiver of FIG. Explanatory drawing which showed the relationship between operation of a remote controller, and the display mode of a display device.

Explanation of symbols

10 antenna, 11 tuner, 12 demultiplexer, 13 video signal processing circuit, 14 drawing processing circuit, 15 frame memory, 16 video output circuit, 17 display device, 18 audio signal processing circuit, 19 amplifier, 20 speaker, 21 operation unit, 22 interface, 23 remote controller, 24 receiving unit, 25 storage medium, 26 interface, 27 bus, 28 control unit.

Claims (8)

A display device;
A drawing processing circuit that captures a video signal of a moving image and a video signal of a still image, displays the moving image on the display device, and displays the still image on-screen on the moving image; A featured television receiver.   2. The television receiver according to claim 1, wherein the drawing processing circuit generates a composite image obtained by performing on-screen display processing of the still image on the moving image, and displays the composite image on the display device. Machine. Operation means for inputting various operation signals;
The television receiver according to claim 1, further comprising: a control unit that switches contents of the moving image based on an operation signal of the operation means. With a tuner,
The control unit adjusts a tuner based on an operation signal of the operation means, switches a video signal of a TV image from the tuner that is input to the drawing processing circuit, and switches a TV image displayed on the display device. The television receiver according to claim 3. The control unit, based on an operation signal of the operation means, a control signal for switching a video displayed on-screen on the display device from the still image to the moving image or from the moving image to the still image. Output to the drawing processing circuit,
5. The television receiver according to claim 3, wherein the drawing processing circuit switches an image to be displayed on the screen on the display device based on the control signal. The control unit captures image data from a recording medium and outputs a video signal of a thumbnail image to the drawing processing circuit,
The television receiver according to claim 1, wherein the drawing processing circuit displays the moving image video on the display device and displays the thumbnail image on-screen. When one of the thumbnail images displayed on the display device is selected based on the operation signal of the operation means, the control unit reads image data of the selected still image from the recording medium. To output to the drawing processing circuit,
The television receiver according to claim 3, wherein the drawing processing circuit displays one still image on the display device. 8. An audio output unit that inputs an audio signal corresponding to the moving image and outputs sound corresponding to the moving image regardless of a display mode of the moving image. A television receiver according to any one of the above.

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