JP2005094471A - Dvd reproducing device and video signal reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the power consumption when the recording medium recoding a video signal is reproduced in the case that a composite video signal is used for the image display and an analog sound signal is used for the sound. <P>SOLUTION: The DVD reproducing device and the video signal reproducing device has the following constitution: when a three-signal type digital video signal is not inputted, the operation of a three-signal type video signal circuit 4 is stopped and the power consumption becomes very small. When a digital sound signal is not inputted, the operation of a light output circuit 5 is stopped and the power consumption becomes very small. When the digital sound signal is not inputted, the operation of a coaxial output circuit 6 is stopped and the power consumption becomes very small. When the recording medium 17 is reproduced by a recording medium reproducing means 1, the recording medium reproducing means 1 stops the transmission of the three-signal type digital video signal to the three-signal type video signal circuit 4, the transmission of the digital sound signal to the light output circuit 5 and the coaxial output circuit 6, and the driving operation of an indicator 11 by an indicator driving circuit 9. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention provides an analog video signal composed of three analog video signals such as a component analog video signal, a composite analog video signal, a digital audio signal, a digital audio signal light output, and an analog audio signal. In addition, the present invention relates to a DVD reproducing apparatus and a video signal reproducing apparatus that display information at the time of reproduction on a display.

  The following technique has been proposed as one of the conventional techniques for reducing the power consumption when reproducing a DVD (referred to as the first conventional technique). That is, in a notebook computer to which this technology is applied, when playing a DVD, it is not involved in decoding / playback of the MPEG2 stream, and is not used during DVD video playback, such as FDD, printer port, Supply of power to the USB and PC card controllers is stopped. In addition, the supply of power to the secondary cache memory is also stopped (see, for example, Patent Document 1).

  Further, the following technique has been proposed (referred to as a second conventional technique). That is, in this technique, a first generation unit that generates a 5.1-channel analog audio signal, a second generation unit that generates a 4-channel analog audio signal, and a 2-channel analog audio signal are used for the audio signal. And a third generation unit for generating. And among the 1st-3rd production | generation parts, about the production | generation part which is unused according to the state of the connected external apparatus, it sets to the standby state which does not supply electric power, and suppresses power consumption. Note that the standby state in which no power is supplied is not a safe stop state but a state in which only a small amount of power is consumed (see, for example, Patent Document 2).

JP-A-11-175205 Japanese Patent Laid-Open No. 10-308055

  However, even when the first prior art is used, the following problems occur. That is, in the case where the device to be applied is an AV device that plays a disc, such as a DVD playback device, there are generally few electrical blocks that are not related to DVD playback. is there. For this reason, even when the supply of power to blocks not related to DVD playback is stopped, the effect is extremely small, and it is difficult to obtain an effective effect.

  The second prior art includes a circuit block for a 5.1 channel analog audio signal, a circuit block for a 4 channel analog audio signal, and a circuit block for a 2 channel analog audio signal. Applied to the configuration. For this reason, it has been difficult to apply an analog audio signal to an apparatus that merely outputs left and right stereo analog audio signals (two-channel audio signals in the second prior art).

  The present invention was devised to solve the above problems, and its purpose is to use a composite video signal for image display and a consumption when reproducing a DVD when an analog audio signal is used for audio. Even when using a composite video signal for image display and an analog audio signal as an audio signal for image display, the power consumption during DVD playback can be reduced. It is an object of the present invention to provide a DVD playback apparatus capable of using component video signals, digital audio signals, and digital audio signal light outputs.

  Another object of the present invention is to provide a video signal circuit for generating a video signal composed of three video signals, such as a component video signal, and digital audio when reproducing a recording medium on which the video signal is recorded. The composite video signal is used for image display by stopping the operation of the optical output circuit that generates the signal light output and the coaxial output circuit that outputs the digital audio signal, and the display device that displays the reproduction information is stopped. A further object is to provide a video signal reproducing apparatus capable of reducing power consumption when reproducing a recording medium on which a video signal is recorded when an analog audio signal is used for audio.

  In addition to the above purpose, when using a composite video signal for image display and an analog audio signal for audio, a component video signal can be used to reduce power consumption during playback of the recording medium. It is another object of the present invention to provide a video signal reproducing apparatus capable of using a digital audio signal or a digital audio signal light output.

  In order to achieve the above object, a DVD playback apparatus according to the present invention indicates a composite digital video signal, a component digital video signal, a digital audio signal, and a track number and playback position in playback by playing back the DVD. A recording medium reproducing means for outputting a reproduction information signal including time information, a composite video signal circuit for generating a composite analog video signal from the composite digital video signal and sending the generated composite analog video signal to a composite video terminal; A component video signal circuit that generates a component analog video signal from the component digital video signal and sends the generated component analog video signal to a component video terminal, and a stereo audio from the digital audio signal. An analog audio signal circuit that generates a log audio signal and sends the generated stereo analog audio signal to a stereo audio terminal, and a digital audio signal light output from the digital audio signal, and an optical output of the generated digital audio signal light Optical output circuit for sending to output terminal, coaxial output circuit for converting digital audio signal to digital audio signal of predetermined impedance and sending impedance converted digital audio signal to digital audio terminal, and fluorescent display tube as display element And a display driver circuit for driving the display based on the reproduction information signal, the component video signal circuit stops operating when the component digital video signal is not input, and the power consumption becomes very small. Digital audio signal is input to the optical output circuit Operation becomes small power consumption at rest when not, coaxial output circuit operation the power consumption by stopping is applied to DVD playback devices become small when the digital audio signal is not input. When the normal mode is selected from the two operation modes of the normal mode and the low power consumption mode, when the recording medium reproducing unit reproduces the DVD, the component is transferred from the recording medium reproducing unit to the component video signal circuit. A digital video signal is transmitted, a digital audio signal is transmitted from the recording medium reproducing means to the optical output circuit and the coaxial output circuit, and the display driver is driven by the display device. When the recording medium reproducing unit performs DVD reproduction when the power consumption mode is selected, the recording medium reproducing unit stops sending the component digital video signal to the component video signal circuit, and the recording medium reproducing unit outputs the light. Stop sending the digital audio signal to the circuit and the coaxial output circuit and the display driver circuit And a control means for stopping the operation of driving the 示器.

  That is, in the case of reproducing a DVD by selecting the low power consumption mode, the power consumption corresponding to the power that should have been consumed in the component video signal circuit, the optical output circuit, the coaxial output circuit, and the display driver circuit. Is reduced. When the normal mode is selected, a component analog video signal, a digital audio signal light output, and a digital audio signal are output.

  The video signal reproducing apparatus according to the present invention reproduces a recording medium on which a video signal is recorded, thereby generating a composite digital video signal and three digital video signals such as a component digital video signal and a primary color digital color signal. A recording medium reproducing means for outputting a three-signal digital video signal configured as a set, a digital audio signal, and a reproduction information signal including time information indicating a track number and reproduction position in reproduction, and a composite digital video signal A composite video signal circuit that generates a composite analog video signal and sends the generated composite analog video signal to a composite video terminal, and a three-signal digital video signal, such as a component analog video signal or a primary color analog color signal 3 Two analog video signals A three-signal video signal circuit configured to generate a three-signal analog video signal configured as a set and send the generated three-signal analog video signal to a three-signal video terminal; and a stereo analog audio signal from the digital audio signal An analog audio signal circuit that generates and sends the generated stereo analog audio signal to the stereo audio terminal, and generates a digital audio signal light output from the digital audio signal, and sends the generated digital audio signal light output to the optical output terminal An optical output circuit that converts the digital audio signal into a digital audio signal of a predetermined impedance, a coaxial output circuit that sends the converted digital audio signal to the digital audio terminal, and drives the display based on the reproduction information signal Display signal drive circuit. The signal circuit stops operating when the three-signal digital video signal is not input and consumes very little power. The optical output circuit stops when the digital audio signal is not input and consumes very little power. The present invention is applied to a video signal reproducing apparatus in which the operation is stopped when the digital audio signal is not inputted and the power consumption becomes very small. When the recording medium reproducing means reproduces the recording medium, the recording medium reproducing means stops sending the three-signal digital video signal to the three-signal video signal circuit, and the recording medium reproducing means Control means for stopping transmission of the light to the optical output circuit and the coaxial output circuit and stopping the operation of the display drive circuit driving the display.

  That is, when reproducing the recording medium, the power consumption is reduced by the amount of power that should have been consumed in the three-signal video signal circuit, the optical output circuit, the coaxial output circuit, and the display driver circuit.

  In addition to the above-described configuration, the control means may perform recording when the recording medium reproducing means reproduces the recording medium when the normal mode is selected from the two operation modes of the normal mode and the low power consumption mode. A three-signal digital video signal is sent from the medium reproducing means to the three-signal video signal circuit, and a digital audio signal is sent from the recording medium reproducing means to the optical output circuit and the coaxial output circuit. And when the recording medium reproducing means reproduces the recording medium when the low power consumption mode is selected from the two operation modes, the recording medium reproducing means outputs the three-signal digital video signal. Stops sending to the signal video signal circuit and stops the recording medium playback means from sending the digital audio signal to the optical output circuit and the coaxial output circuit and displays An operation drive circuit for driving the display device is adapted to be stopped.

  That is, in the case of reproducing a DVD by selecting the low power consumption mode, only the amount of power that should have been consumed in the three-signal video signal circuit, the optical output circuit, the coaxial output circuit, and the display driver circuit, Power consumption is reduced. When the normal mode is selected, a three-signal video signal, a digital audio signal light output, and a digital audio signal are output.

  According to the present invention, when the DVD is played when the normal mode is selected, the component digital video signal is sent from the recording medium reproducing means to the component video signal circuit, and the recording medium reproducing means and the optical output circuit are coaxially output. A digital audio signal is transmitted to the circuit, and the display is driven by the display driver circuit. Further, when the DVD is reproduced when the low power consumption mode is selected, the recording medium reproducing means stops sending the component digital video signal to the component video signal circuit, and the recording medium reproducing means is connected to the optical output circuit. The transmission of the digital audio signal to the coaxial output circuit is stopped, and the operation of the display drive circuit for driving the display is stopped. Therefore, when playback is performed with the low power consumption mode selected, power consumption is reduced by the amount of power that should have been consumed in the component video signal circuit, optical output circuit, coaxial output circuit, and display driver circuit. Is done. When the normal mode is selected, a component analog video signal, a digital audio signal light output, and a digital audio signal are output. For this reason, when a composite video signal is used for image display and an analog audio signal is used for audio, power consumption when reproducing a DVD can be reduced. In addition, since the display element of the display is a fluorescent display tube, power consumption is greatly reduced when display is stopped. Therefore, the degree of reduction in power consumption when reproducing a DVD can be increased. In addition, when a composite video signal is used for image display and an analog audio signal is used as an audio signal, the component video signal, digital audio signal, The use of digital audio signal light output can be enabled.

  According to the present invention, when the recording medium reproducing means reproduces the recording medium, the recording medium reproducing means stops sending the three-signal digital video signal to the three-signal video signal circuit and reproduces the recording medium. The means stops sending the digital audio signal to the optical output circuit and the coaxial output circuit. In addition, the display driving circuit stops the operation of driving the display. Therefore, when reproducing the recording medium, the power consumption is reduced by the amount of power that should have been consumed in the three-signal video signal circuit, the optical output circuit, the coaxial output circuit, and the display driver circuit. Therefore, when a composite video signal is used for image display and an analog audio signal is used for audio, power consumption when reproducing a recording medium on which the video signal is recorded can be reduced.

  Still further, when reproduction is performed when the normal mode is selected, the three-signal digital video signal is sent from the recording medium reproducing means to the three-signal video signal circuit, and the optical output circuit and the coaxial output circuit are transmitted from the recording medium reproducing means. When the low-power consumption mode is selected, the recording medium reproducing means outputs the three-signal digital video signal to the three signals. Stop sending the digital video signal to the optical output circuit and the coaxial output circuit and stop the operation of the display drive circuit driving the display. I am letting. Therefore, in the case of reproducing the DVD by selecting the low power consumption mode, only the amount of power that should have been consumed in the three-signal video signal circuit, the optical output circuit, the coaxial output circuit, and the display driver circuit, Power consumption is reduced. When the normal mode is selected, a three-signal video signal, a digital audio signal light output, and a digital audio signal are output. For this reason, when using composite video signals for image display and analog audio signals for audio, component video signals and digital audio can also be used to reduce power consumption during playback of recording media. The signal or digital audio signal light output can be used.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an electrical configuration of an embodiment of a video signal reproducing apparatus according to the present invention, specifically showing a DVD reproducing apparatus.

  In the figure, a pickup 19 reproduces a video signal, an audio signal, and the like recorded on a DVD (recording medium) 17 that is rotationally driven by a disk motor 18. The signal processing circuit 2 performs error correction after demodulating the digital data from the reproduction signal output from the pickup 19. Then, the digital data that has been subjected to error correction is expanded by the MPEG2 method or the like to generate a component digital video signal (three-signal digital video signal) and a composite digital video signal. Also, two types of digital audio signals are generated.

  Then, the component digital video signal is sent to a component video signal circuit (a three-signal video signal circuit according to the claims, hereinafter referred to as a component circuit) 4, and the composite digital video signal is sent to a composite video signal circuit (hereinafter referred to as a composite video signal circuit). (Referred to as a circuit). One of the two types of digital audio signals is sent to the optical output circuit 5 and the coaxial output circuit 6, and the other of the two types of digital audio signals is sent to the analog audio signal circuit 8. Also, a reproduction information signal including time information indicating the track number and reproduction position in reproduction is sent to the control means 3.

  That is, the block 1 including the disk motor 18, the pickup 19, and the signal processing circuit 2 serves as a recording medium reproducing unit. Note that illustration of the configuration for servo control is omitted.

  The component circuit 4 generates a component video signal composed of three signals of an analog luminance signal, a blue difference signal, and a red difference signal from the component digital video signal. For this purpose, a distribution circuit 24 and three D / A converters 21 to 23 are provided. Then, the distribution circuit 24 extracts a digital video signal indicating a luminance signal (Y signal) from the component digital video signal and sends it to the D / A converter 21.

  Further, a digital video signal indicating a blue color difference signal (Cb color difference signal) is extracted from the component digital video signal and sent to the D / A converter 22. Also, a digital video signal indicating a red color difference signal (Cr color difference signal) is extracted from the component digital video signal and sent to the D / A converter 23. The luminance signal sent from the D / A converter 21 is led to the output terminal 311, and the blue color difference signal sent from the D / A converter 22 is led to the output terminal 312, and from the D / A converter 23. The transmitted red color difference signal is led to the output terminal 313 (the component video terminal 31 according to the claims is composed of three output terminals 311 to 313).

  The optical output circuit 5 converts the digital audio signal output from the signal processing circuit 2 into a digital audio signal optical signal and sends it to the optical output terminal 32. The coaxial output circuit 6 impedance-converts the digital audio signal output from the signal processing circuit 2 into a 75Ω digital audio signal and sends it to the digital audio terminal 33.

  The composite circuit 7 converts the composite digital video signal sent from the signal processing circuit 2 into a composite analog video signal and sends it to the composite video terminal 34. The analog audio signal circuit 8 generates a stereo analog audio signal from the digital audio signal sent from the signal processing circuit 2 and sends it to the stereo audio terminal 35. For this reason, two D / A converters 26 and 27 and a distribution circuit 28 are provided.

  The distribution circuit 28 extracts a digital audio signal indicating the left channel from the digital audio signals transmitted from the signal processing circuit 2 and transmits the digital audio signal to the D / A converter 26. Also, a digital audio signal indicating the right channel is extracted from the digital audio signals sent from the signal processing circuit 2 and sent to the D / A converter 27. The analog audio signal sent from the D / A converter 26 is led to the output terminal 351, and the analog voice signal sent from the D / A converter 27 is led to the output terminal 352 (output terminals 351, 351, 351). 352 is a stereo audio terminal 35 described in claims).

  The light receiving circuit 12 receives an infrared signal transmitted from the remote controller 13 and outputs a remote control signal obtained by receiving the light to the display driver circuit 9. As shown in FIG. 2, the display 11 is provided on the front panel 62 of the apparatus main body 61, and a fluorescent display tube is used as a display element. The display drive circuit 9 is the data output from the control means 3 (the data output from the signal processing circuit 2 to the control means 3 and includes the track number being reproduced, time information indicating the reproduction position, etc.). Based on this, the display unit 11 is driven to display the track number being reproduced, time information indicating the reproduction position, and the like on the display unit 11. Further, a remote control signal output from the light receiving circuit 12 is output to the control means 3.

  When the commercial power supply 141 is supplied, the power supply circuit 14 includes a signal processing circuit 2, a control unit 3, a component circuit 4, an optical output circuit 5, a coaxial output circuit 6, a composite circuit 7, an analog audio signal circuit 8, Operating power is supplied to each block of the display driver circuit 9 and the light receiving circuit 12.

  Note that when the three-signal digital video signal is not input, the component circuit 4 is in an operation stop state and the power consumption is very small. Further, when no digital audio signal is input, the optical output circuit 5 is in an operation stop state, and the power consumption is very small. Further, the coaxial output circuit 6 is stopped when the digital audio signal is not input, and the power consumption is very small.

  The control means 3 includes a microcomputer as a main part, and controls main operations as a DVD playback apparatus. For this reason, the operation of the signal processing circuit 2 is controlled. Further, by sending display data to the display driver circuit 9, necessary information is displayed on the display 11.

  When the low power consumption mode is selected from the two modes of the normal mode and the low power consumption mode, the component circuit 4, the optical output circuit 5, and the coaxial output are also used when reproducing the DVD 17. The three blocks of the circuit 6 are maintained in a stopped state. Further, the display operation of the display 11 is stopped.

  That is, when the low power consumption mode is selected, the control unit 3 prohibits the signal processing circuit 2 from sending the component digital video signal to the component circuit 4 (the component digital video connected to the distribution circuit 24). The level of the signal path 201 for the signal is maintained at, for example, the L level), and the power consumption of the component circuit 4 is suppressed to a minute value. Further, the signal processing circuit 2 is prohibited from sending a digital audio signal to the optical output circuit 5 and the coaxial output circuit 6 (for a digital audio signal connected to the optical output circuit 5 and the coaxial output circuit 6). For example, the level of the signal path 202 is maintained at the L level), and the power consumption of the optical output circuit 5 and the coaxial output circuit 6 is suppressed to a very small value.

  In addition, by sending a predetermined signal to the display drive circuit 9, the display drive circuit 9 stops the operation of driving the display 11. Therefore, when the low power consumption mode is selected, each block of the component circuit 4, the optical output circuit 5, the coaxial output circuit 6, and the display driver circuit 9 is also in a state where the DVD 17 is in a state of being reproduced. The operation is stopped in a state where the power consumption becomes very small.

  On the other hand, when the normal mode is selected, the control means 3 causes the signal processing circuit 2 to send the component digital video signal circuit to the component circuit 4 when the DVD 17 is in the playback state, and the signal processing circuit 2 sends the digital audio signal. The light is output to the optical output circuit 5 and the coaxial output circuit 6. Further, the display drive circuit 9 is set to drive the display 11.

  As a supplementary explanation, the microcomputer constituting the control means 3 and the signal processing circuit 2 are integrated in one IC 51. The component circuit 4 is integrated inside an independent IC 52, and the optical output circuit 5 and the coaxial output circuit 6 are integrated inside one IC 53. That is, although the component circuit 4 and the set of the optical output circuit 5 and the coaxial output circuit 6 are integrated in ICs 52 and 53 different from the IC 51 constituting the control means 3, they are separately used for control. It is possible to set the state of the component circuit 4, the optical output circuit 5, and the coaxial output circuit 6 to any one of the two states of the operating state and the non-operating state without providing the signal line. It has become a structure. Therefore, the existing PUNLITO wiring board can be used as it is without changing the print pattern.

  FIG. 3 is a flowchart showing main operations of the embodiment. The operation of the embodiment will be described with reference to FIG.

  Now, the composite video terminal 34 is connected to the composite video terminal of the television receiver 71 via the connection line 81, and the stereo audio terminal 35 is input to the audio signal of the television receiver 71 via the connection lines 82 </ b> L and 82 </ b> R. Suppose that it is connected to a terminal. That is, it is assumed that the component video terminal 31, the light output terminal 32, and the digital audio terminal 33 are not used.

  Further, it is assumed that the user displays an initial setting screen using the remote controller 13 and selects the low power consumption mode from the two modes of the normal mode and the low power consumption mode. The selected mode is stored in the control means 3.

  In the state where the low power consumption mode is selected, when the playback instruction is given after the DVD 17 is placed on the tray 63, the control means 3 selects whether the normal mode is selected or the low power consumption mode is selected. It is checked whether it has been performed (steps S1 and S2). At this time, since the low power consumption mode has been selected, the control means 3 gives an instruction to the signal processing circuit 2 to stop sending the component digital video signal to the component circuit 4 (step S3). Further, the signal processing circuit 2 is instructed to stop sending the digital audio signal to the optical output circuit 5 and the coaxial output circuit 6 (step S4). Further, the display drive circuit 9 is instructed to stop driving the display 11 (step S5).

  When the transmission of the above instruction is completed, the control means 3 gives the signal processing circuit 2 an instruction to start playback of the DVD 17. As a result, the DVD 17 is driven to rotate, and data is read from the DVD 17 by the pickup 19 and output to the signal processing circuit 2. The signal processing circuit 2 sends a composite digital video signal to the composite circuit 7 and sends a digital audio signal to the analog audio signal circuit 8. Therefore, since the composite analog video signal and the line level stereo audio signal are sent to the television receiver 71, the image reproduced from the DVD 17 is displayed on the television receiver 71 and the stereo reproduced from the DVD 17 is displayed. Audio is output from the television receiver 71 (step S6).

  On the other hand, the component digital video signal is not sent to the component circuit 4. Also, no digital audio signal is sent to the optical output circuit 5 and the coaxial output circuit 6. Therefore, the component circuit 4, the optical output circuit 5, and the coaxial output circuit 6 are maintained in the operation stop state, and the power consumption remains in a very small state. Further, since the display driver circuit 9 is also maintained in the operation stop state, the power consumption remains in a very small state. That is, when the DVD 17 is played back in the state where the low power consumption mode is selected, the power consumed when each block of the component circuit 4, the optical output circuit 5, the coaxial output circuit 6, and the display driver circuit 9 operates. The power consumption is suppressed by the amount.

  The description of the operation when the composite video signal is used has been completed, and the operation when the component video signal is used will be described below.

  In order to display a high-quality video, it is assumed that the component video terminal 31 is connected to the component video terminal of the television receiver 71 using a connection line 81 composed of three shield lines (for audio signals, stereo audio An audio signal transmitted from the terminal 35 is used). At this time, in the initial setting, the user selects the normal mode. The fact that the normal mode has been selected is stored in the control means 3.

  In the state where the normal mode is selected, when the playback instruction is given after the DVD 17 is placed on the tray 63, the control means 3 has selected the normal mode or the low power consumption mode has been selected. It is checked whether or not (steps S1 and S2). At this time, since the normal mode has been selected, the control means 3 gives an instruction for causing the component circuit 4 to transmit the component digital video signal to the signal processing circuit 2 (step S7). Further, the signal processing circuit 2 is instructed to send a digital audio signal to the optical output circuit 5 and the coaxial output circuit 6 (step S8). In addition, an instruction to drive the display 11 is given to the display drive circuit 9 (step S9).

  When the transmission of the above instruction is completed, the control means 3 gives the signal processing circuit 2 an instruction to start playback of the DVD 17. As a result, the DVD 17 is driven to rotate, and data is read from the DVD 17 by the pickup 19 and output to the signal processing circuit 2. Then, a component digital video signal is sent from the signal processing circuit 2 to the component circuit 4. For this reason, a luminance signal, a blue color difference signal, and a red color difference signal are transmitted from the component video terminal 31. Further, a digital audio signal light output is transmitted from the optical output terminal 32, and a digital audio signal is transmitted from the digital audio terminal 33.

  Since the composite digital video signal is sent to the composite circuit 7, the composite analog video signal is sent from the composite video terminal 34 (this composite analog video signal is not used). A digital audio signal is sent to the analog audio signal circuit 8. For this reason, component analog video signals and line level stereo audio signals are sent to the television receiver 71, so that high-quality images reproduced from the DVD 17 are displayed on the television receiver 71 and reproduced from the DVD 17. The stereo sound thus output is output from the television receiver 71 (step S10). Also, time information indicating the number of the track being played and the playback position is displayed on the display 11 (step S11).

  If the instruction input to the remote controller 13 is an instruction different from the reproduction, an operation corresponding to the input instruction is executed (steps S1 and S12).

  The present invention is not limited to the above-described embodiment, and the case where the three-signal video terminal is the component video terminal 31 has been described. However, the present invention can be similarly applied to the case where the D video terminal is used.

  Further, the case where the three-signal digital video signal is a component digital video signal has been described, but the present invention can be similarly applied to the case where the three primary color digital color signals of red, blue, and green are used. At this time, for example, a SCART connector or the like is used for the three-signal video terminal.

  Further, although the case where the recording medium is a DVD has been described, the present invention can be similarly applied to an optical disk or a magneto-optical disk different from the DVD, and further, a magnetic disk (including a hard disk) or a magnetic disk. The same applies to a tape.

It is a block diagram which shows the electric constitution of one Embodiment of the video signal reproducing | regenerating apparatus which concerns on this invention. It is explanatory drawing which shows the connection state of embodiment and a television receiver. It is a flowchart which shows the main operation | movement of embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Recording medium reproduction | regeneration means 3 Control means 4 Component video signal circuit (3 signal type video signal circuit)
5 Optical output circuit 6 Coaxial output circuit 7 Composite video signal circuit 8 Analog audio signal circuit 9 Display drive circuit 11 Display 17 DVD (recording medium)
31 Component video terminal (3-signal video terminal)
32 Optical output terminal 33 Digital audio terminal 34 Composite video terminal 35 Stereo audio terminal

Claims (3)

Recording medium playback means for outputting a composite digital video signal, a component digital video signal, a digital audio signal, and a playback information signal including time information indicating a track number and playback position in playback by playing back a DVD ,
A composite video signal circuit that generates a composite analog video signal from a composite digital video signal and sends the generated composite analog video signal to a composite video terminal;
A component video signal circuit that generates a component analog video signal from the component digital video signal and sends the generated component analog video signal to a component video terminal;
An analog audio signal circuit for generating a stereo analog audio signal from the digital audio signal and sending the generated stereo analog audio signal to a stereo audio terminal;
An optical output circuit for generating a digital audio signal light output from the digital audio signal and sending the generated digital audio signal light output to an optical output terminal;
A coaxial output circuit that converts a digital audio signal into a digital audio signal having a predetermined impedance and sends the impedance-converted digital audio signal to a digital audio terminal;
A display using a fluorescent display tube as a display element;
A display driving circuit for driving the display based on the reproduction information signal;
The component video signal circuit stops operating when the component digital video signal is not input and the power consumption is very small. The optical output circuit stops operating when the digital audio signal is not input and the power consumption is very small. In a DVD playback apparatus in which the operation is stopped when the digital audio signal is not input and the power consumption is very small.
When the normal mode is selected from the two operation modes of the normal mode and the low power consumption mode, when the recording medium playback means plays back the DVD, the component digital video is transferred from the recording medium playback means to the component video signal circuit. A signal is transmitted and a digital audio signal is transmitted from the recording medium reproducing means to the optical output circuit and the coaxial output circuit, and the display driver is driven by the display device. When the mode is selected, when the recording medium reproducing means reproduces the DVD, the recording medium reproducing means stops sending the component digital video signal to the component video signal circuit, and the recording medium reproducing means becomes the optical output circuit. Stops sending digital audio signals to the coaxial output circuit and the display driver circuit DVD playback apparatus characterized by comprising a control means for stopping the operation of moving. A three-signal digital video signal composed of a composite digital video signal and a combination of three digital video signals such as a component digital video signal and a primary color digital color signal by reproducing a recording medium on which the video signal is recorded. And a recording medium reproducing means for outputting a digital audio signal and a reproduction information signal composed of time information indicating a track number and reproduction position in reproduction,
A composite video signal circuit that generates a composite analog video signal from a composite digital video signal and sends the generated composite analog video signal to a composite video terminal;
From the three-signal digital video signal, a three-signal analog video signal composed of three analog video signals such as a component analog video signal or a primary color analog color signal is generated, and the generated three-signal analog video A three-signal video signal circuit for sending a signal to a three-signal video terminal;
An analog audio signal circuit for generating a stereo analog audio signal from the digital audio signal and sending the generated stereo analog audio signal to a stereo audio terminal;
An optical output circuit for generating a digital audio signal light output from the digital audio signal and sending the generated digital audio signal light output to an optical output terminal;
A coaxial output circuit that converts a digital audio signal into a digital audio signal having a predetermined impedance and sends the impedance-converted digital audio signal to a digital audio terminal;
A display driving circuit for driving the display based on the reproduction information signal;
The operation of the three-signal video signal circuit stops when the three-signal digital video signal is not input and the power consumption is small, and the optical output circuit stops operation when the digital audio signal is not input and the power consumption is small. In the video signal playback apparatus in which the coaxial output circuit stops operating when the digital audio signal is not input and the power consumption is very small.
When the recording medium reproducing means reproduces the recording medium, the recording medium reproducing means stops sending the three-signal digital video signal to the three-signal video signal circuit, and the recording medium reproducing means optically transmits the digital audio signal. A video signal reproducing apparatus comprising control means for stopping transmission to an output circuit and a coaxial output circuit and stopping an operation of a display drive circuit driving a display. The control means outputs three signals from the recording medium reproducing means when the recording medium reproducing means reproduces the recording medium when the normal mode is selected from the two operation modes of the normal mode and the low power consumption mode. A three-signal digital video signal is sent to the video signal circuit, a digital audio signal is sent from the recording medium reproducing means to the optical output circuit and the coaxial output circuit, and the display driving circuit drives the display; When the recording medium reproducing means reproduces the recording medium when the low power consumption mode is selected from the various operation modes, the recording medium reproducing means converts the three-signal digital video signal into the three-signal video signal circuit. And the recording medium reproducing means stops sending the digital audio signal to the optical output circuit and the coaxial output circuit, and the display driver circuit Video signal reproducing apparatus according to claim 2, wherein the stopping the operation of moving.

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