JP2010257517A - Reproducing device and display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reproducing device which can detachably be mounted on a display device and saves power by stopping supply of power to a circuit for converting a video signal for a display device or external display device, and to provide the display device. <P>SOLUTION: The reproducing device 1 is freely attachable or detachable to/from a built-in display device 2. The reproducing device 1 determines whether a built-in display device 2 or an external display device 3 is connected on the basis of a hot plug detection signal of an HDMI specification, and stops supply of power from a power supply circuit 112 to an internal HDMI transmitter 150 or an external HDMI transmitter 151. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a playback device and a display device capable of playing back video.

There are built-in type electric devices that are built in and used in electric devices and automobiles. For example, a playback device built in a display device has been put to practical use as the built-in electric device. Since the reproduction apparatus does not require any cable for connecting to the display apparatus, it is possible to save troublesome setting and to make a neat design with less wiring.
Some of the built-in electric devices are configured to be detachable from an electric device main body, an automobile, or the like. For example, Patent Document 1 discloses a car stereo that is detachable from an automobile.

JP-A-6-275059

However, a display device incorporating a playback device in which the playback device is detachable has not been known. By connecting the playback device separated from the display device with a built-in playback device to an external display device, the use opportunity of the playback device is greatly increased.
However, when the playback device includes two video signal conversion circuits for a display device with a built-in playback device and an external display device, when only one of the display devices is viewed, power is supplied to both the conversion circuits. It is useless.

  The present invention has been made in view of such circumstances, and controls power supply for a video signal conversion circuit for a display device that does not output a video signal among display devices with built-in playback devices and external display devices. Accordingly, it is an object of the present invention to provide a playback device that can save power and a display device in which the playback device can be detachably mounted.

  A reproducing apparatus according to the present invention is a reproducing apparatus that reproduces a video signal from a recording medium, a plurality of conversion circuits that convert the reproduced video signal into a video signal of a predetermined standard, and a video signal converted by each conversion circuit. A plurality of terminals that respectively output, a detection unit that detects a predetermined signal input to the terminal, a power supply circuit that supplies power to each conversion circuit, and each conversion from the power supply circuit based on a detection result by the detection unit And a control means for controlling power feeding to the circuit.

  In the reproducing apparatus according to the present invention, when the detection unit detects the predetermined signal, the control unit stops supplying power to the conversion circuit that outputs a video signal to a terminal other than the terminal that detected the predetermined signal. It is made to do so.

  The reproducing apparatus according to the present invention includes a receiving unit that receives a predetermined control signal, and when the detecting unit detects the predetermined signal from a specific terminal among the plurality of terminals, the receiving unit receives the predetermined signal. A control operation based on a predetermined control signal is performed.

The reproducing apparatus according to the present invention includes a plurality of power receiving terminals for supplying power to the power supply circuit.

  A display device according to the present invention is a display device including a housing and a display unit that is disposed on one surface of the housing and displays an image. Other devices can be attached to and detached from the surface facing the one surface of the housing. It is possible to attach to.

  A display device according to the present invention includes a housing, a display unit that is disposed on one surface of the housing, displays an image, and any one of the playback devices described above, and is a surface that faces the one surface of the housing. The playback device is detachably mounted.

  In the present invention, a video signal is reproduced from a recording medium. The plurality of conversion circuits convert the reproduced video signal into a video signal of a predetermined standard, and the plurality of terminals output the video signals converted by the respective conversion circuits. The detection means detects a predetermined signal input to each terminal. The power supply circuit supplies power to each conversion circuit. The control means controls power feeding from the power supply circuit to each conversion circuit based on the detection result by the detection means.

  In the present invention, when the predetermined signal is detected by the detection means, power supply to the conversion circuit that outputs a video signal to a terminal other than the terminal where the predetermined signal is detected is stopped. .

  The present invention includes a receiving unit that receives a predetermined control signal. When the detection means detects the predetermined signal from a specific terminal among the plurality of terminals, the reproducing apparatus according to the present invention performs a control operation based on the predetermined control signal received by the receiving unit. .

  The present invention includes a plurality of power receiving terminals for supplying power to the power supply circuit, and corresponds to a plurality of power receiving systems.

  In this invention, it is a display apparatus provided with the housing | casing and the display part. The display unit is disposed on one surface of the housing. On the surface facing the one surface of the housing, other devices can be detachably mounted.

  In this invention, it is a display apparatus provided with a housing | casing, a display part, and any one reproduction | regeneration apparatus mentioned above. The display unit is disposed on one surface of the housing. The playback device is detachably mounted on a surface facing one surface of the housing.

  The playback device and the display device according to the present invention can save power and can be detachably mounted.

It is a block diagram which shows the structure of a reproducing | regenerating apparatus. It is explanatory drawing which showed the reproducing | regenerating apparatus isolate | separated from the internal display apparatus from the back surface of the internal display apparatus. It is explanatory drawing which showed the reproducing | regenerating apparatus isolate | separated from the built-in display device from the side of the built-in display device. It is explanatory drawing which showed the reproducing | regenerating apparatus currently isolate | separated from the built-in display device from the back surface of the built-in display device. It is explanatory drawing which shows the state to which the reproducing | regenerating apparatus and the external display apparatus are connected. It is a block diagram which shows the structure of a built-in display apparatus. It is the flowchart which showed the procedure which concerns on the determination which stops electric power feeding, and the determination which controls operation | movement of a reproducing | regenerating apparatus.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram showing the configuration of the playback apparatus 1. A playback device 1 according to an embodiment of the present invention includes an internal connector 110, an external connector 111, a power supply circuit 112, a playback unit 120, a signal processing unit 130, a playback device control unit 140, an internal high definition multimedia interface (HDMI) transmitter 150, An external HDMI transmitter 151, an internal HDMI connector 160, an external HDMI connector 161, and a playback device light receiving unit 170 are included.

The internal connector 110 is a terminal for the playback device 1 to receive a DC voltage, for example, DC 15 V, from the built-in display device 2 when the playback device 1 is attached to the built-in display device 2.
The external connector 111 is a terminal for the playback device 1 to receive a DC voltage, for example, DC 15 V, from an AC adapter (not shown) when the playback device 1 is separated from the built-in display device 2.

  The power supply circuit 112 converts the DC voltage taken from the internal connector 110 or the external connector 111 into a predetermined DC voltage. The power supply circuit 112 is configured to supply the converted DC voltage to the internal HDMI transmitter 150, the external HDMI transmitter 151, and the like.

  The reproduction unit 120 is, for example, a BD (Blu-ray Disc) drive, a DVD (Digital Versatile Disc) drive, or the like, and performs recording / reproduction of a video signal on the optical disc 8. Here, recording / reproduction means recording and reproduction or recording or reproduction. The playback unit 120 is connected to the signal processing unit 130 by, for example, ATAPI (AT Attachment Packet Interface). The reproduction unit 120 outputs the reproduced video signal to the signal processing unit 130. The video signal is compressed. Further, the compressed video signal is input from the signal processing unit 130 to the reproduction unit 120, and then the reproduction unit 120 records the video signal on the optical disc 8.

The signal processing unit 130 decompresses the compressed video signal from the reproduction unit 120 and outputs the decompressed video signal to the internal HDMI transmitter 150 or the external HDMI transmitter 151.
Further, the signal processing unit 130 compresses the expanded video signal from the internal HDMI transmitter 150 or the external HDMI transmitter 151 and outputs the compressed video signal to the reproduction unit 120.

The internal HDMI transmitter 150 is a conversion circuit that converts the video signal from the signal processing unit 130 into an HDMI standard video signal and outputs the video signal to the internal HDMI connector 160. This conversion includes, for example, conversion of a video signal into a low voltage differential signal and conversion from parallel data to serial data. When the playback device 1 functions as a receiver of the built-in display device 2, the internal HDMI transmitter 150 converts the HDMI standard video signal from the internal HDMI connector 160 into the original video signal.
Similar to the internal HDMI transmitter 150, the external HDMI transmitter 151 is a conversion circuit that converts a video signal between the reproduction unit 120 and the external display device 3.
Since the internal HDMI transmitter 150 and the external HDMI transmitter 151 handle high-frequency signals, power consumption is very large depending on the type of chip.

The internal HDMI connector 160 is an input / output terminal that inputs and outputs HDMI standard video signals to and from the built-in display device 2. The internal HDMI connector 160 is connected to the built-in display device 2 via the internal HDMI cable 2c.
The external HDMI connector 161 is an input / output terminal that inputs and outputs HDMI standard video signals to and from the external display device 3. The external HDMI connector 161 is connected to the external display device 3 via the external HDMI cable 3c.
The internal HDMI connector 160 and the external HDMI connector 161 are input with HDMI standard hot plug detection signals and DDC (Display Data Channel) signals from the built-in display device 2 and the external display device 3, respectively. The hot plug detection signal is a predetermined high-level signal input from one electrical device to the other electrical device when the electrical devices are HDMI-connected. The DDC signal is a signal for transmitting specific information of EDID (Extended Display Identification Data) included in the display device from the display device to the electrical device when an electrical device such as a personal computer is HDMI-connected to the display device. The EDID is, for example, a frequency indicating the number of times that the display device rewrites the screen per second, a resolution of the display device, a manufacturer name, and a model.

  The internal HDMI cable 2c and the external HDMI cable 3c are fixed with screws, claws or the like so as not to be disconnected from the internal HDMI connector 160 and the external HDMI connector 161 due to vibration, external force or the like. The internal HDMI connector 160 and the internal HDMI cable 2c are fixed more firmly than the external HDMI connector 161 and the external HDMI cable 3c. When shipping with the playback device 1 mounted in the built-in display device 2, the connection portion of the internal HDMI connector 160 and the internal HDMI cable 2c is not deformed or broken due to vibration, external force, etc. in the distribution stage. Because.

The playback device control unit 140 controls each component of the playback device 1. Further, the playback device control unit 140 inputs a CEC (Consumer Electronics Control) signal included in the HDMI standard to the built-in display device 2 or the external display device 3 via the internal HDMI connector 160 or the external HDMI connector 161, respectively. Output. Thereby, a cooperative operation is realized between the playback device 1 and the built-in display device 2 or the external display device 3. The cooperative operation is that the playback device 1 controls the operation of the built-in display device 2 or the external display device 3 and the built-in display device 2 or the external display device 3 controls the operation of the playback device 1.
The playback device control unit 140 and the signal processing unit 130 communicate with each other by a UART (Universal Asynchronous Receiver Transmitter), a USART (Universal Synchronous and Asynchronous Receiver and Transmitter), or the like.

  The playback device control unit 140 uses the HDMI standard hot plug detection signal input to the internal HDMI connector 160 and the external HDMI connector 161 to connect the internal display device 2 and the external display device 3 to the internal HDMI connectors. Whether the connector 160 or the external HDMI connector 161 is determined. Further, the playback device control unit 140 obtains the frequencies and resolutions of the built-in display device 2 and the external display device 3 from the HDMI standard DDC signal input to the internal HDMI connector 160 and the external HDMI connector 161.

  The playback device control unit 140 controls power supply from the power supply circuit 112 to the internal HDMI transmitter 150 and the external HDMI transmitter 151 through control over the power supply circuit 112.

  The playback device remote controller 1b is a remote control device that transmits a control signal for controlling the operation of the playback device 1 to the playback device light receiving unit 170 by infrared communication.

  The playback device light receiving unit 170 receives the control signal from the playback device remote controller 1b via infrared communication. The reproduction device light receiving unit 170 outputs the received control signal to the reproduction device control unit 140.

  FIG. 2 is an explanatory diagram showing the playback device 1 separated from the built-in display device 2 from the back side of the built-in display device 2. FIG. 3 is an explanatory view showing the playback device 1 separated from the built-in display device 2 from the side of the built-in display device 2. FIG. 4 is an explanatory diagram showing the playback device 1 being separated from the built-in display device 2 from the back side of the built-in display device 2.

  The built-in display device 2 is a thin display device, for example, and includes a video display unit 260 on the front surface 21 a of the housing 21. The playback device 1 is mounted on the back surface 21 b side facing the front surface 21 a of the housing 21 of the built-in display device 2. The position on the back surface 21b of the playback device mounting portion on which the playback device 1 is mounted is at the upper side end of the back surface 21b in consideration of the operation of attaching and detaching the playback device 1 and the operation of inserting the optical disc 8 into the playback device 1. . Note that the position of the playback device mounting portion in the housing 21 of the built-in display device 2 is not limited to the upper side end of the back surface 21b, and may be provided at an appropriate position in consideration of operability, aesthetics, and the like.

  When the playback device 1 is mounted on the built-in display device 2, the two protruding rails 1a and 1a are substantially horizontal when mounted on the housing surface of the playback device 1 facing the built-in display device 2. Is provided. The length of the rails 1a and 1a is substantially the same as the width of the housing of the playback device 1 along the direction that is substantially horizontal when mounted. The cross-sectional shapes of the rails 1a and 1a are trapezoidal, and the width of the rails 1a and 1a increases from the playback device 1 when mounted to the built-in display device 2. The width of the rails 1a and 1a may be any size as long as it can be easily attached and detached and does not cause any trouble.

Two guide grooves 2a, 2a that allow the rails 1a, 1a to be fitted are formed in a substantially horizontal direction in the playback device mounting portion of the built-in display device 2. The cross-sectional shapes of the guide grooves 2a and 2a are substantially the same as the cross-sectional shapes of the rails 1a and 1a so that the rails 1a and 1a can be fitted. The length and width of the guide grooves 2a and 2a are substantially the same as the length and width of the rails 1a and 1a, respectively.
An internal DC power cord 2b and an internal HDMI cable 2c for the playback device 1 are attached to the far end of the playback device mounting portion of the built-in display device 2.

The playback device 1 is slid substantially parallel to the rear surface 21b of the built-in display device 2 in the substantially horizontal direction and toward the rear end of the playback device mounting portion, and the rails 1a and 1a are fitted into the guide grooves 2a and 2a. Thus, the playback device 1 is mounted on the built-in display device 2.
Before the mounting of the playback device 1 to the built-in display device 2, the internal DC power cord 2b and the internal HDMI cable 2c are connected to the internal connector 110 and the internal HDMI connector 160, respectively. When the connection is completed, the playback device 1 is further slid to completely attach the playback device 1 to the built-in display device 2.

  When the playback device 1 is separated from the built-in display device 2, the procedure is reversed. The playback device 1 is slightly slid in a substantially horizontal direction and in a direction away from the playback device 1 substantially parallel to the back surface 21 b of the built-in display device 2. The appearing internal DC power cord 2b and internal HDMI cable 2c are released from the internal connector 110 and the internal HDMI connector 160, respectively. Thereafter, the playback device 1 is further slid to release the fitting between the rails 1a, 1a and the guide grooves 2a, 2a, so that the playback device 1 is completely separated from the built-in display device 2.

  FIG. 5 is an explanatory diagram showing a state in which the playback device 1 and the external display device 3 are connected. When the separated playback device 1 is used as a single unit, the external connector 111 of the playback device 1 and the AC adapter 1c are connected using the external DC power cord 3b. Further, the external HDMI connector 161 of the playback device 1 and the external display device 3 are connected by an external HDMI cable 3c. In such a case, the playback device 1 is controlled by the playback device remote controller 1b or the operation unit of the playback device (not shown). Alternatively, the playback device 1 is controlled from the external display device 3 via the CEC signal.

  FIG. 6 is a block diagram showing a configuration of the built-in display device 2. The built-in display device 2 includes a power circuit 210, an HDMI connector 220, an HDMI transmitter 230, a television signal processing unit 240, a selector unit 250, a video display unit 260, an audio output unit 261, a built-in display device control unit 270, and a built-in display. A device light receiving unit 280 and a built-in display device remote controller 2d are included.

  The power supply circuit 210 is connected to the commercial power supply 9 and supplies power to each component of the built-in display device 2.

  The HDMI connector 220 is an input / output terminal that inputs and outputs HDMI standard video signals between the built-in display device 2 and the playback device 1. The HDMI connector 220 is connected to the playback device 1 via the internal HDMI cable 2c.

  The HDMI transmitter 230 is a conversion circuit that converts the HDMI standard video signal from the HDMI connector 220 into the original video signal. The HDMI transmitter 230 converts the video signal from the television signal processing unit 240 into a video signal of the HDMI standard.

The television signal processing unit 240 separates data including video and audio from a digital television broadcast signal, and decodes the video data and audio data obtained by the separation into a video signal and an audio signal, respectively. Also, the television signal processing unit 240 outputs the video signal and the audio signal to the selector unit 28 in time synchronization based on the time information added to the video data and the audio data.
Further, the television signal processing unit 240 has a demodulator function and receives video signals and audio signals of analog television broadcasting. The TV signal processing unit 240 outputs the received analog video signal and audio signal to the selector unit 250.

  The selector unit 250 determines whether to output the video signal and audio signal input from the playback device 1 or to output the video signal and audio signal input from the television signal processing unit 240 of the built-in display device control unit 270. Select by control signal.

  The video display unit 260 includes a screen such as a liquid crystal panel (not shown), an organic EL (Electro-Luminescence) display, and a plasma display, for example, and processes the video signal input from the selector unit 250 to display the video on the screen. The audio output unit includes a speaker (not shown), processes the audio signal input from the selector unit 250, and outputs audio from the speaker.

The built-in display device control unit 270 controls each component of the built-in display device 2. The built-in display device control unit 270 inputs and outputs HDMI standard CEC signals to and from the playback device 1 via the HDMI connector 220. As a result, a cooperative operation is realized between the built-in display device 2 and the playback device 1.
Further, the built-in display device control unit 270 outputs the EDID related to the video display unit 260 from the HDMI connector 220 to the playback device 1 via the DDC signal.

  The built-in display device control unit 270 controls turning on and off of power supply from the power supply circuit 210 to each component by outputting a control signal to the power supply circuit 210.

The built-in display remote controller 2d is a remote control device that has a power button, a channel change button, and the like, and transmits a control signal to the built-in display device light receiving unit 280 by infrared communication.
The built-in display device light receiving unit 280 outputs the received control signal to the built-in display device control unit 270. The built-in display device control unit 270 detects the control signal and receives an operation by the user. When the control signal is a control signal to the playback device 1, the built-in display device control unit 270 outputs the control signal to the playback device 1 by CEC.

FIG. 7 is a flowchart illustrating a procedure related to determination to stop power feeding and determination to control the operation of the playback device 1.
The playback device control unit 140 detects a hot plug detection signal input to the internal HDMI connector 160 and the external HDMI connector 161 (step S71).

  Based on the hot plug detection signal input to the internal HDMI connector 160, the playback device control unit 140 determines whether or not the playback device 1 is connected to the built-in display device 2 (step S72). When the playback device control unit 140 determines that the playback device 1 is not connected to the built-in display device 2 (step S72: NO), the playback device control unit 140, based on the hot plug detection signal input to the external HDMI connector 161, Whether or not 1 is connected to the external display device 3 is determined (step S73). When the playback device control unit 140 determines that the playback device 1 is connected to the external display device 3 (step S73: YES), the playback device control unit 140 stops power supply from the power supply circuit 112 to the internal HDMI transmitter 150 (step S74). The playback device control unit 140 controls the operation of the playback device 1 based on the control signals from the external display device 3 and the playback device light receiving unit 170 (step S75), and ends the process.

When the playback device control unit 140 determines that the playback device 1 is connected to the built-in display device 2 (step S72: YES), the playback device control unit 140 is based on the hot plug detection signal input to the external HDMI connector 161. Whether or not 1 is connected to the external display device 3 is determined (step S76). When the playback device control unit 140 determines that the playback device 1 is connected to the external display device 3 (step S76: YES), the playback device control unit 140 inputs the DDC signal input to the internal HDMI connector 160 and the external HDMI connector 161. Whether the frequency and resolution of the built-in display device 2 are the same as the frequency and resolution of the external display device 3 is determined based on the DDC signal (step S79).
When the playback device control unit 140 determines that the frequency and resolution of the built-in display device 2 and the frequency and resolution of the external display device 3 are the same (step S79: YES), the playback device control unit 140 receives the internal HDMI transmitter 150 and the external device from the power supply circuit 112. Power is supplied to both HDMI transmitters 151 (step S80). The playback device control unit 140 controls the operation of the playback device 1 based on the control signal from the built-in display device 2 (step S81), and ends the process.

When it is determined in step S73 that the playback device 1 is not connected to the external display device 3 (step S73: NO), the playback device control unit 140 stops power supply from the power supply circuit 112 to the external HDMI transmitter 151 (step S73). S77).
When it is determined in step S76 that the playback device 1 is not connected to the external display device 3 (step S76: NO), the playback device control unit 140 stops the power supply from the power supply circuit 112 to the external HDMI transmitter 151 (step S76). S77).
When the playback device control unit 140 determines that the frequency and resolution of the built-in display device 2 and the frequency and resolution of the external display device 3 are not the same (step S79: NO), the playback device control unit 140 sends the power to the external HDMI transmitter 151. Is stopped (step S77).
The playback device control unit 140 controls the operation of the playback device 1 based on the control signal from the built-in display device 2 (step S78), and ends the process.

  In step S74 and step S77, since power supply to the internal HDMI transmitter 150 and the external HDMI transmitter 151, which consumes a large amount of power, is separated, power is supplied from the power supply circuit 112 to both the internal HDMI transmitter 150 and the external HDMI transmitter 151. And a power saving effect is obtained.

In step S75, the playback device 1 can operate as a single unit by controlling the operation of the playback device 1 based on control signals from the external display device 3 and the playback device light receiving unit 170.
In step S81, the playback device 1 is connected to the built-in display device 2 and the external display device 3. In such a case, the playback device 1 controls the operation of the playback device 1 based on the control signal from the built-in display device 2, but the playback device 1 based on the control signal from the external display device 3 and the playback device light receiving unit 170. Does not control the operation. Therefore, the control signals from the built-in display device 2 and the control signals from the external display device 3 and the reproduction device light receiving unit 170 do not conflict.

  In today's home where a plurality of display devices are installed in a kitchen, the playback device 1 built in the built-in display device 2 can be detachably attached to the external display device 3 as in the present invention. In this case, it is not necessary to purchase a plurality of playback devices 1, which is economical.

  In this embodiment, the playback device, the built-in display device, and the external display device are connected via an HDMI interface, but may be connected via, for example, USB, IEEE 1394, Fiber Channel, or the like.

  In this embodiment, since the playback device, the built-in display device, and the external display device are connected via an HDMI standard interface, the playback device converts the video signal reproduced by the playback unit into the HDMI standard and an external HDMI transmitter. An HDMI transmitter is provided. However, the interface standard for connecting the playback device and the display device is not limited to the HDMI standard, and may be USB or the like as described above. In such a case, the playback apparatus may be configured to include any conversion circuit as long as it is a video signal conversion circuit corresponding to the adopted interface standard.

  In the present embodiment, the playback device and the external display device are connected via a digital interface, but may be connected via an analog interface. Therefore, the playback device may be provided with an analog video and audio input / output terminal separately as a terminal for the external display device in addition to the digital interface terminal. Alternatively, the playback device may be provided with only analog video and audio input / output terminals as terminals for the external display device.

In the present embodiment, the internal HDMI connector and the internal HDMI cable are fixed more firmly than the external HDMI connector and the external HDMI cable in consideration of vibration between the distribution stages and the like. However, at the stage where the user uses the present invention, it can be considered that the user who repeatedly attaches and detaches the playback apparatus feels more troublesome to release and fix the robust fixing means. Therefore, the video signal input / output terminal may be selected by the user from the internal HDMI connector and the external HDMI connector. That is, by providing a switch or the like for switching the input / output terminal of the video signal in the playback device, the user can customize the connection location between the playback device and the built-in display device to his own usage environment.
Further, the internal HDMI connector and the internal HDMI cable may be fixed to the external HDMI connector and the external HDMI cable with the same robustness.

  In the present embodiment, the playback device control unit controls power supply from the power supply circuit to the internal HDMI transmitter and the external HDMI transmitter through control over the power supply circuit. However, the playback device control unit may control power reception of the internal HDMI transmitter and the external HDMI transmitter through the control of the internal HDMI transmitter and the external HDMI transmitter without using the power supply circuit.

  In the present embodiment, when power supply to the internal HDMI transmitter is stopped (step S74), power supply to the external HDMI transmitter is stopped (step S77), and power is supplied to the internal HDMI transmitter and the external HDMI transmitter (step S74). S80) was handled. However, when the playback device is separated from the built-in display device and receives DC power from the AC adapter and is not connected to the external display device 3 (step S73: NO), the internal HDMI transmitter and the external HDMI transmitter are not connected. The aspect which added the step which stops the electric power feeding to both may be sufficient. In such a case, further power saving effect can be obtained.

In the present embodiment, the reproducing apparatus has been described as a vertically placed optical disk apparatus. However, the playback device may be a horizontally placed optical disk device.
In this embodiment, the playback device is an optical disk device, but the playback device may be an HD (Hard Disc) device.

  In this embodiment, when the playback device is separated from the built-in display device, the playback device is provided with an external connector that receives DC power from the AC adapter. However, the playback device may be configured to receive power from a battery instead of providing an external connector. Alternatively, the playback device may include an external connector and a battery.

  In this embodiment, the connection between the playback device and the built-in display device and the connection between the playback device and the external display device are wired connections, but the present invention is not limited to this, and wireless connection may be used.

  In this embodiment, the playback device and the built-in display device are made detachable by fitting the rail and the guide groove. However, any means may be used as long as it can be fixed, such as a magnet and a screw.

In the present embodiment, the reproducing device light receiving unit is arranged in a state of being always exposed to the front of the reproducing device. However, when the playback device or the built-in display device is provided with shielding means for shielding the playback device light receiving unit from the infrared rays emitted from the playback device remote controller, and the playback device is mounted on the built-in display device, the playback is performed by the shielding means. When the device light receiving unit is shielded and the reproduction device is used separately from the built-in display device, the reproduction device light receiving unit may be exposed.
Thereby, when the playback device is mounted on the built-in display device, it is possible to avoid a conflict between the control signal of the playback device remote control and the control signal of the built-in display device remote control.

  In the present embodiment, the playback device has a playback device light receiving unit for inputting a control signal. However, the playback device can be controlled by the HDMI standard CEC signal input from the external display device. Therefore, the reproducing device light receiving unit is not an essential component.

  In the present embodiment, the built-in playback device stops supplying power to the playback device when the playback device is attached to the built-in display device and when the playback device is separated from the built-in display device. Etc. are not controlled. However, when the built-in display device control unit determines that the playback device is separated from the built-in display device based on the hot plug detection signal input to the HDMI connector, the power supply circuit supplies power to the playback device. It may be a mode of stopping. This realizes power saving of the built-in playback device.

  Each of the embodiments is merely an example of actualization in carrying out the present invention, and the technical scope of the present invention should not be interpreted in a limited manner. In other words, the present invention can be implemented in various forms without departing from the spirit or main features thereof.

1 playback device 1a rail 1b playback device remote control 1c AC adapter 110 internal connector 111 external connector 112 power supply circuit 120 playback unit 130 signal processing unit 140 playback device control unit 150 internal HDMI transmitter 151 external HDMI transmitter 160 internal HDMI connector 161 external HDMI connector 170 Receiving device light receiving unit 2 Built-in display device 2a Guide groove 2b Internal DC power cord 2c Internal HDMI cable 21 Housing 21a Front surface 21b Rear surface 260 Video display unit 3 External display device 3b External DC power cord 3c External HDMI cable 8 Optical disc (recording medium) )

Claims (6)

In a playback device for playing back a video signal from a recording medium,
A plurality of conversion circuits for converting the reproduced video signal into a video signal of a predetermined standard;
A plurality of terminals for outputting video signals converted by the respective conversion circuits, and
Detecting means for detecting a predetermined signal input to the terminal;
A power supply circuit for supplying power to each conversion circuit;
And a control unit that controls power supply from the power supply circuit to each conversion circuit based on a detection result of the detection unit. The control means includes
The power supply to a conversion circuit that outputs a video signal to a terminal other than the terminal that has detected the predetermined signal is stopped when the detection unit detects the predetermined signal. The playback device described in 1. A receiving unit for receiving a predetermined control signal;
The control unit is configured to perform a control operation based on a predetermined control signal received by the reception unit when the detection unit detects the predetermined signal from a specific terminal of the plurality of terminals. The reproducing apparatus according to claim 1 or 2. The reproducing apparatus according to claim 1, further comprising a plurality of power receiving terminals for supplying power to the power supply circuit. A housing,
A display device that is arranged on one surface of the housing and includes a display unit that displays an image;
A display device, wherein another device can be detachably mounted on a surface facing one surface of the housing. A housing,
A display unit arranged on one surface of the housing and displaying an image;
A playback device according to any one of claims 1 to 4, comprising:
The display device, wherein the playback device is detachably mounted on a surface facing one surface of the housing.

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