JP2005354437A - Picture reproducer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a picture reproducer which successively displays reproduced pictures by a simple operation for switching over the progressive system and the interlace system for reproducing picture signals, thus eliminating the need of such troublesome operation for reconnecting the cable of a television receiver. <P>SOLUTION: A menu key and a decision key are operated to select a color difference signal position shown on the screen of a television receiver 21, and then a picture display in the progressive system. A controller 20 is provided for controlling a switching means 14 for outputting picture signals of the progressive system on a second output terminal 17 when a reproducing key is operated. When a special key is operated, it controls the switching means 14 for switching the picture signals of the progressive system to those of the interlace system and for outputting them. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a video playback device such as a DVD player that records or plays back information on a DVD (Digital Versatile Disc), and in particular, video playback that easily switches between a progressive video signal and an interlace video signal for playback. Relates to the device.

  In the television system, NTSC employs an interlaced scanning system in which a single image (frame) is drawn twice with skipped scanning lines in order to transmit a video signal with a small bandwidth.

  However, in this interlace method, when a video is displayed on a CRT of a television receiver or the like, each scanning line of the two fields does not enter the center of the other scanning line due to an error generated in the synchronization circuit or the deflection circuit. Since a pairing phenomenon that slightly shifts occurs, there is a problem that the image quality is deteriorated.

  To prevent this pairing phenomenon, the PAL television receiver uses a progressive scan method that draws one frame at a time with the scanning line being doubled. Recently, in Europe and the like that use, there are two types of progressive compatible type and non-compatible type.

  By the way, when such a PAL television receiver is connected to a DVD player, the playback video can be displayed by the progressive method if it is a progressive type, but the video is not displayed if it is a non-progressive type. there were.

  At this time, it is necessary to reconnect the cable of the television receiver to the skirt jack which is the RGB signal input terminal on the DVD player side, but the user generally does not know this.

  For this reason, if the image is not displayed on the screen, the user repeatedly operates the keys on the remote controller and the main body, but in the end, it is confused because nothing is shown.

  Eventually, when I finally noticed how to deal with it by looking at the instruction manual, it was necessary to reconnect the cable as described above.

  However, such a cable connection change must be performed on the back of the television receiver, which is very troublesome.

  From such a point, a video playback device aimed at improving user convenience has been proposed (see, for example, Patent Document 1).

  This is provided with a slide switch. When this switch is switched to the interlace side, an interlaced video signal is output from the output terminal regardless of the operation of the switch key on the remote controller.

  When the slide switch is switched to the progressive side, the CPU that controls the entire operation alternately outputs the video signals output from the interlace conversion circuit and the progressive conversion circuit each time the switch key of the remote control is operated. Switching control is performed so as to lead to the output circuit.

Thereby, a complicated operation of the user can be reduced.
JP, 2003-61047, A The video output change circuit of the composition which does not change the video output about the change of the above-mentioned progressive system and the interlace system is also proposed.

Even if the switching circuit is a model that outputs only an interlaced scanning video signal or only a progressive video signal, the operation of connecting with a jumper is unnecessary, and the assembling work is facilitated.
JP 2003-189253 A

  By the way, the video reproduction apparatus of the above-mentioned Patent Document 1 needs to operate a slide switch and a remote control switching key. For example, it is possible to easily switch between a progressive method and an interlace method simply by pressing any key on the remote control. It is not a thing.

  Further, the video output switching circuit of Patent Document 2 can facilitate assembly work, but it cannot be easily switched by simply pressing any key on the remote controller. Therefore, any of the above-described devices has a certain limit for improving operability.

  Therefore, the present invention has been made in view of the above-described problems, and can display a reproduced video continuously by switching between a progressive method and an interlace method with a simple operation when reproducing a video signal. An object of the present invention is to provide a video playback apparatus that eliminates the troublesome task of reconnecting the cables.

  In order to achieve the above object, a video reproduction apparatus according to the present invention extracts a video signal reproduced from an information recording medium as an RGB signal and a color difference signal, and the RGB signal is led to a first output terminal, while the color difference signal Is converted into an interlaced video signal and a progressive video signal and led to the second output terminal via the switching means, and the first output terminal and the second output terminal are compatible with the progressive system and the progressive system. In a video reproduction apparatus capable of connecting a non-compatible television receiver, a menu key for issuing a command to display various menu items on the screen of the television receiver and the menu item are selectively determined. A determination key for issuing a command, a playback key for issuing a command for outputting the playback video signal, and the television receiver. A special key that issues a command for switching the video display method, and the color difference signal side displayed on the screen by the operation of the menu key and the decision key is selected, and after the progressive video display is selected, When the playback key is operated, the switching unit is controlled to output the progressive video signal to the second output terminal side. Then, when the special key is operated, the switching unit is controlled. And a control unit that performs control to switch the progressive video signal to the interlace video signal for output.

  In addition, in the video reproduction apparatus according to the present invention for achieving the above object, the control unit causes the color difference signal to be extracted in response to an operation of the reproduction key and output the video signal to the first output terminal side. Thereafter, when the reproduction key is pressed for longer than a standard time, the RGB signal is extracted instead of the color difference signal and is output to the first output terminal side.

  The special key is a stop key for stopping the output of the reproduced video signal, and issues a command to switch the video display method when pressed for longer than a standard time.

  As described above, when the television receiver connected to the first and second output terminals is a non-progressive type, the video reproducing apparatus according to the present invention outputs a progressive type video signal to the screen. Although the playback video is not displayed, if the special key is operated, it is switched to the interlace video signal and output, and the playback video is displayed on the screen of the television receiver. This eliminates the need for troublesome work such as reconnecting cables on the back of the camera.

  In addition, the video playback apparatus according to the present invention for achieving the above object is switched to the RGB signal extraction side when the playback key is pressed for longer than the standard time, and outputs the video signal, which is played back by the interlace method. Since the video is displayed, there is an advantage that it is possible to avoid the problem that the playback video is not displayed by the interlace method because it has been switched to the color difference signal extraction side in advance.

  In addition, the special key is a stop key and issues a command to switch the video display method when pressed for longer than the standard time, so it can be used as a conventional function key as well as a progressive video signal with a simple operation. Can be switched to an interlaced video signal and output.

  Hereinafter, embodiments of the video playback apparatus of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing an electrical configuration of a video reproduction apparatus according to an embodiment of the present invention.

  The video playback apparatus of the present embodiment is applied to the DVD player 1, and the recorded information of the DVD 2 is played back by pressing the remote controller (remote controller) 25 and the video signal is output from the output terminals 16 and 17 to the television. It is configured to send out to the receiver 21 and display a desired video on the screen.

  The television receiver 21 uses an interlace system as a standard for video display, and there are a compatible type provided with a progressive system and a non-compatible type not provided with a progressive system.

  In FIG. 1, reference numeral 3 denotes a drive system motor, which drives the DVD 2 to rotate. An optical pickup 4 sends information optically read from the track of the DVD 2 to the data separation circuit 7 of the main circuit 6.

  The operation speed of the motor 3 is controlled by the servo circuit 5, and the data reading operation of the optical pickup 4 is also controlled by the servo circuit 5.

  The servo circuit 5 controls the motor 3 and the optical pickup 4 in accordance with a command from the control unit 20.

  The data separation circuit 7 separates information read from the DVD 2 into a video data component and an audio data component, and sends them to the movable contact of the changeover switch 8.

  The changeover switch 8 has a RGB signal processing unit (RGB and illustration) 9 connected to a first switching contact (upper side in the drawing), and a color difference signal processing unit (color difference and illustration) 10 to a second switching contact (lower side in the drawing). Is connected.

  The RGB signal processing unit 9 extracts an RGB signal from the video data component, and an output unit 15 is connected to the RGB signal processing unit 9. On the other hand, the color difference signal processing unit 10 extracts a color difference signal from a video data component, and is connected to a video processing circuit 11.

  The changeover switch 8 sends out an RGB signal to the output unit 15 when the changeover switch 8 is switched to the first switching contact side by the switching signal from the control unit 20. Further, when switching to the second switching contact side, a color difference signal is sent to the video processing circuit 11.

  The video processing circuit 11 includes an interlace conversion circuit 12, a progressive conversion circuit 13, a switching circuit 14, and an output unit 15.

  The interlace conversion circuit 12 and the progressive conversion circuit 13 are connected to the output unit 15 via the switching circuit 14.

  The interlace conversion circuit 12 converts the video data component including the color difference signal into an interlace video signal, while the progressive conversion circuit 13 converts the video data component including the color difference signal into a progressive video signal to switch the switching circuit 14. Respectively.

  The switching circuit 14 sends an interlace video signal or a progressive video signal to the output unit 15 in response to a switching signal from the control unit 20. The output unit 15 converts the above-described various video signals into a signal format suitable for video display of the television receiver 21 and transmits the signal to the output terminals 16 and 17.

  The output terminal 16 is for RGB signal output and is a skirt jack type having a plurality of connection pins.

  When the television receiver 21 is connected to the output terminal 16 via a cable, a video signal from the DVD player 1 can be received and a reproduced video can be displayed by an interlace method.

  The output terminal 17 is used for outputting a color difference signal and includes three connection pins. When a television receiver 21 is connected to the output terminal 17 via a cord, a video signal from the DVD player 1 can be received and a reproduced video can be displayed by an interlace method and a progressive method.

  The control unit 20 is a microcomputer that controls the operation of the entire apparatus, and is connected unidirectionally or bidirectionally depending on each part of the circuit and its function.

The control unit 20 controls the servo circuit 5, the data separation circuit 7, the video processing circuit 7, and the like according to a command from the remote controller 18 that is input via the reception unit 19.
Then, the mode shifts to a mode corresponding to the command signal from the remote controller 25, and various operations such as normal playback, slow playback, fast forward, fast reverse and stop are performed by sending a control signal to the servo circuit 5 and controlling the drive mechanism. Execute.

  In addition, menu items and messages are displayed on the screen of the television receiver 21 in response to a command signal from the remote controller 25, and a command signal for determining a selection item is transmitted.

  Furthermore, it is configured to perform control to switch to interlaced or progressive video display according to the length of time that the play key and stop key are pressed.

  FIG. 2 is an explanatory diagram showing a schematic configuration of the remote controller.

  Reference numeral 25 denotes a remote controller, and various operation keys for operating the DVD player 1 are arranged on the remote controller body.

  As the operation keys, a power key 27 for turning on / off the power, an opening / closing key for opening / closing the tray, and the like are arranged on the front side of the remote control main body as in a general remote controller.

  Also, a numeric keypad is provided in the approximate center of the remote control body, and a menu key 27 and a decision key 28 are arranged in the vicinity thereof. The menu key 27 outputs a command for displaying a menu (MENU) on the screen of the television receiver 21, and the determination key 28 outputs a command signal for determining an item selected on the screen.

  A cursor key or the like is disposed on the rear side. This cursor key also serves as a function key, and a reproduction key 29, a stop key 30, a fast forward key, and a fast reverse key are assigned to the keys arranged vertically and horizontally.

  Further, a pause key, a previous skip key, a next skip key, and the like are provided in the vicinity of the cursor key.

  When any of these cursor keys is operated when the menu is displayed on the screen of the television receiver 21 with the menu key 27, the cursor on the screen is moved to output a command for selecting a desired item. It has become.

  In the remote controller 25 configured as described above, when any key is pressed, information corresponding to the operation content is transmitted to the DVD player 1 side as an infrared signal.

  Next, the operation of the DVD player will be described with reference to the drawings.

  When the user wants to watch the playback video of the DVD 2 on the television receiver 21 with the DVD player 1, the input terminals 22 and 23 are connected to the output terminals 16 and 17.

  At this time, the PAL system among the television receivers normally includes a skirt jack for RGB signal output (for example, input terminal 22) and three connection pins for output of color difference signals (for example, input terminal 23). ing.

  Therefore, when the use of the PAL television receiver is started, the input terminal 22 and the output terminal 16 are connected by a cable, and the input terminal 23 and the output terminal 17 are connected by a cord.

  When the user presses the power key 26 of the remote control 26 and then operates the menu key 27, the control unit 20 displays a menu on the screen of the television receiver 21.

  Among these menus, the item of video display method has display contents for selecting either “RGB signal output” or “color difference signal output”.

  Here, when the user selects “RGB signal output” and presses the reproduction key within the standard time, the control unit 20 switches the changeover switch 8 to the first changeover contact side. Then, an RGB signal is extracted from the video signal reproduced on the DVD 2 and sent to the television receiver 2 via the output unit 15, the output terminal 16 and the cable.

Since the PAL television receiver 21 uses the interlace method as a standard, a reproduced video is immediately displayed on the screen. Therefore, the user can view the reproduced video by the interlace method.
On the other hand, when the user selects “color difference signal output” from the menu item, the control unit 20 displays a menu item for selecting either “interlace method” or “progressive method” on the screen.

  Here, when the user selects the “interlace method” and presses the reproduction key within the standard time, the control unit 20 switches the changeover switch 8 to the second switching contact side. Then, a color difference signal is extracted from the video signal reproduced on the DVD 2 and sent to the interlace conversion circuit 12.

  Then, after being converted to the interlace system, it is sent to the television receiver 21 via the switching circuit 14, the output unit 15, the output terminal 16 and the cable.

  As a result, the reproduced video is displayed on the screen of the television receiver 21 by the interlace method.

  On the other hand, when the user selects the “progressive method” and presses the reproduction key within the standard time, a color difference signal is sent to the progressive conversion circuit 13.

  Then, after being converted into a progressive signal, the signal is sent to the television receiver 21 via the switching circuit 14, the output unit 15, the output terminal 17 and the code.

  When the television receiver 21 is a progressive system compatible type, the playback video is displayed on the screen by the progressive system. Therefore, the user can view the playback video in a progressive manner.

  However, when the television receiver 21 is a non-progressive type, the playback video in the progressive mode is not displayed on the screen.

  For this reason, since the user selects and operates the “progressive method”, nothing is displayed on the screen, so that the user knows that the television receiver 21 is of the progressive method compatible type.

  Therefore, when the user presses the stop key 30 longer than the standard time, the control unit 20 receives this and controls the switching circuit 14 to switch from the progressive conversion circuit 13 side to the interlace conversion circuit 12 side.

  Then, after the color difference signal is converted to the interlace method, it is sent to the television receiver 21 via the switching circuit 14, the output unit 15, the output terminal 17, and the code.

  As a result, the playback video is displayed on the screen of the television receiver 21 in an interlaced manner, so that the user can immediately view the desired video.

  Therefore, when the user notices that nothing is displayed on the screen, it is only necessary to press and hold the stop key 30 and the cable of the television receiver 21 is connected to the output terminal 16 which is a skirt jack as in the prior art. There is no need to reconnect.

By the way, when the user operates the power key 26 of the remote controller 25 immediately after using the DVD player 1 and then immediately operates the playback key 29, the movable contact of the changeover switch 8 may be on the second switching contact side. At this time, if the NTSC television receiver 21 is connected to the output terminal 16, the interlaced compatible type is used as a reference, so that the reproduced video is not displayed on the screen.

  Therefore, when the user presses the reproduction key 29 longer than the standard time, the control unit 20 switches the movable contact of the changeover switch 8 to the first switching contact side.

  Accordingly, an interlace video signal is sent from the RGB signal processing unit 9 to the output terminal 16 side via the output unit 15. Therefore, the user can view the reproduced video by the interlace method.

  The present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

It is a block diagram which shows the electric constitution of the video reproduction apparatus which is one Embodiment of this invention. It is explanatory drawing which shows schematic structure of a remote control device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Video reproduction apparatus 14 Switching means 17 2nd output terminal 20 Control means 21 Television receiver

Claims (3)

The video signal reproduced from the information recording medium is extracted as an RGB signal and a color difference signal, and the RGB signal is led to the first output terminal, while the color difference signal is converted into an interlace video signal and a progressive video signal. The first output terminal and the second output terminal are connected to the progressive output type and non-progressive type television receivers by being led to the second output terminal via the switching means. In the video playback device,
A menu key for issuing a command to display various menu items on the screen of the television receiver;
A determination key for issuing a command to selectively determine the menu item;
A playback key for issuing a command to output the playback video signal;
A special key for issuing a command to switch a video display method in the television receiver;
After the color difference signal side displayed on the screen is selected by the operation of the menu key and the enter key, and the playback key is operated after the progressive video display is selected, the switching means is Controlling to output the progressive video signal to the second output terminal side, and then, when the special key is operated, controls the switching means to convert the progressive video signal to the interlace video. And a control unit that performs control of switching to a signal and outputting the signal. When the control unit extracts the color difference signal according to the operation of the playback key and outputs the video signal to the first output terminal side, and then the playback key is pressed for longer than the standard time. 2. The video reproduction apparatus according to claim 1, wherein the RGB signal is extracted instead of the color difference signal and is output to the first output terminal side. 2. The video according to claim 1, wherein the special key is a stop key for stopping output of a playback video signal, and issues a command to switch the video display method when pressed for longer than a standard time. Playback device.