JP2009006734A - On-vehicle image distributor - Google Patents

On-vehicle image distributor Download PDF

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Publication number
JP2009006734A
JP2009006734A JP2007167043A JP2007167043A JP2009006734A JP 2009006734 A JP2009006734 A JP 2009006734A JP 2007167043 A JP2007167043 A JP 2007167043A JP 2007167043 A JP2007167043 A JP 2007167043A JP 2009006734 A JP2009006734 A JP 2009006734A
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Japan
Prior art keywords
video
power
vehicle
signal
video signal
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
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JP2007167043A
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Japanese (ja)
Inventor
Yasuo Serikawa
Atsushi Shinoda
Tsutomu Totani
勉 戸谷
篤史 篠田
安夫 芹川
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Beat Sonic:Kk
株式会社ビートソニック
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Priority to JP2007167043A priority Critical patent/JP2009006734A/en
Publication of JP2009006734A publication Critical patent/JP2009006734A/en
Application status is Pending legal-status Critical

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Abstract

A vehicle-mounted video distributor for controlling power supplied to a monitor device according to presence / absence of a video signal from a vehicle-mounted video device or a remote signal other than a video signal from a vehicle-mounted video device.
An in-vehicle video distributor 10 includes a distributor main body 11, an input unit 12, and an output unit 13. The distributor main body 11 includes a power supply circuit 14 and a video circuit 15. The power supply circuit 14 includes power supply control means 16 provided with a first power supply control switch 20 that operates by detecting a video signal. The video circuit 15 includes video signal detection means 18 that detects a video signal output from an in-vehicle video device such as a DVD player. Then, depending on whether or not a video signal output from the in-vehicle video equipment is detected, the first power control switch 20 is opened and closed to turn on or off the power supplied to the monitor device. For the remote signal, the power supplied to the monitor device is turned on or off by the same detection means.
[Selection] Figure 1

Description

  The present invention relates to a vehicle-mounted video distributor that distributes a video signal of a vehicle-mounted video device to a plurality of monitors.

Currently, many automobiles are provided with car navigation, a back camera, and the like to assist driving. On the other hand, televisions, DVD devices, and the like are also provided for entertainment.
The monitor device that displays the video output from the above-described in-vehicle video equipment is directly connected to the accessory power source or controlled to be turned on or off in conjunction with the accessory power source.

One monitoring device is generally installed per vehicle. On the other hand, there is a monitor device installed on each seat or on the ceiling so that passengers in the front passenger seat and the rear seat can watch TV or the like while driving.
No quote

  However, a plurality of monitor devices connected as described above are turned on regardless of whether or not an image is input. Therefore, even if each of the above monitor devices is a single device or a plurality of monitor devices, the operation of turning on or off each monitor device individually as necessary is manually performed. There is a usage problem that must be done.

  The present invention has been made to solve the above-described problems, and is a power supply that is supplied to a monitor device depending on the presence or absence of a video signal from a vehicle-mounted video device or a remote signal other than a video signal from a vehicle-mounted video device. It is an object of the present invention to provide an on-vehicle video distributor for controlling the camera.

  The in-vehicle video distributor according to claim 1 includes: a power input terminal connected to an external power source; an input unit having a video input terminal for inputting a video signal from the in-vehicle video equipment; and a plurality of monitor devices At least one power output terminal connected to the power input unit, an output unit having a video output terminal for outputting a video signal to the monitor device, and a power circuit for distributing the power input from the external power source to the monitor devices And an on-vehicle video distributor comprising a distributor main body provided with a video circuit for distributing the video signal input from the on-vehicle video equipment to each of the monitor devices, and supplying the power supply circuit to each of the monitor devices Power supply control means for turning on or off the power supply is provided, and the video circuit is provided with video signal detection means for detecting a video signal from the in-vehicle video equipment. Based on the signal detection of the image signal, characterized in that the said as to turn on or off the power supplied to the monitor device in the power supply control unit.

  According to a second aspect of the present invention, there is provided the on-vehicle video distributor according to the first aspect of the invention, wherein the video signal is placed on a signal line of a detection signal for transmitting a detection result of the video signal detection means to the power supply control means. When the stopped state is within a predetermined time, a delay circuit is provided so that the fact that the video signal has stopped is not transmitted to the power control means, and even when the video signal is stopped, It is characterized in that the power supplied to each of the monitor devices is not turned off simultaneously with the stop.

  The in-vehicle video distributor according to claim 3 is the invention according to claim 1 or 2, wherein the input unit is provided with a remote input terminal, the power supply circuit is provided with a remote signal detection means, and the distributor The main body is provided with a bypass circuit for turning on or off each monitor device power by either the remote signal detection means or the video signal detection means, and a remote signal for remotely operating the power supplied to each monitor device is provided. When the remote signal is input to the remote input terminal and the remote signal is detected by the remote signal detecting means, the power supplied to each monitor device connected to the bypass circuit regardless of the signal detection status of the video signal It is characterized in that is turned on.

  According to the in-vehicle video distributor according to claim 1, the in-vehicle video distributor is based on the signal detection of the video signal output from the in-vehicle video equipment such as a DVD player and a TV tuner in the video signal detecting means. In order to turn on or off the power of at least one monitor device connected to the vehicle-mounted video distributor, a power output terminal is provided in the on-vehicle video distributor, and the power supplied from the power output terminal is turned on or off. I made it. Therefore, it is possible to link the input status of the video signal output from the in-vehicle video equipment and the power supplied to each monitor device. Thereby, if there is an input of video, the power of the monitor device can be turned on.

  According to the on-vehicle video distributor described in claim 2, the power supplied to each monitor device is not turned off simultaneously with the stop of the video signal. Therefore, for example, when the in-vehicle video equipment is switched from the DVD player to the TV tuner, it is possible to prevent the power supplied to each monitor device from being suddenly turned off due to the interruption of the video signal input. In addition, since the power supplied to each monitor device is not suddenly interrupted, the video displayed on each monitor device can be switched instantaneously.

  According to the on-vehicle video distributor according to claim 3, a remote signal for remotely operating the power supplied to each monitor device is input to the on-vehicle video distributor, and the remote signal is detected by the remote signal detecting means. The power supplied to each monitor device via the bypass circuit is turned on regardless of the signal detection status of the video signal. Therefore, for example, when displaying the video input from the back camera only on the monitor device provided on the driver's seat side, if the signal for starting the back camera is a remote signal, regardless of the detection status of the video signal, By detecting the remote signal, the power supplied to each monitor device via the bypass circuit can be turned on. Thereby, the power supply of each monitor apparatus can be turned on.

An on-vehicle video distributor 10 according to an embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a block diagram showing an outline of the configuration of an in-vehicle video distributor 10 according to the present embodiment. Here, a power supply line and a control signal line for power supply control are indicated by a solid line, and a video signal line is indicated by a one-dot chain line.

The on-vehicle video distributor 10 includes a distributor main body 11, an input unit 12, and an output unit 13.
The distributor main body 11 includes a power circuit 14 that distributes power input from an external power source to each monitor device 40, and a video circuit 15 that distributes video signals input from an in-vehicle video device to each monitor device 40. .

The power supply circuit 14 includes a power supply control means 16 and a power supply distribution means 17.
The power control means 16 has a first power control switch 20. The first power control switch 20 opens and closes based on the video signal detected by the video signal detection means 18 described later, and turns on or off the power supplied to the monitor device 40.
The power distribution unit 17 branches the power supplied to each monitor device 40 and outputs it to the output unit 13.

The video circuit 15 includes a video signal detection unit 18 and a video signal distribution unit 19.
The video signal detection means 18 detects a video signal output from an in-vehicle video device 35 such as a DVD player, a video deck, or a TV tuner.
Here, the detection signal when the video signal is detected is transmitted to the power supply control means 16 via the signal line 21. Therefore, the power supplied to the monitor device 40 can be turned on or off based on the signal detection of the video signal output from the in-vehicle video device 35.
The video signal distribution means 19 is composed of a circuit that distributes video signals to a plurality of connected monitor devices 40.

The input unit 12 includes at least one power input terminal 22 that outputs to the power circuit 14 and at least one video input terminal 23 that outputs to the video circuit 15.
The power input terminal 22 is supplied with power distributed to the monitor device 40 via a harness, a terminal block, an electric wire, and the like from a power output portion of an external power source such as a power source for vehicle accessories.
The video input terminal 23 distributes the video signal from the video output unit of the in-vehicle video equipment 35 such as a DVD player, a TV tuner, a back camera, a car navigation system, and a video to the monitor device 40 via a pin cable, a harness, and the like. Video is input.

The output unit 13 includes a plurality of video output terminals 24 and at least one power output terminal 25.
The video output terminal 24 outputs video to the video input unit of the monitor device 40. The power output terminal 25 outputs power to the power input unit of the monitor device 40.
Each of the input / output terminals 22, 23, 24, 25 is configured by a pin jack or a socket, connector, terminal block, or the like provided at the end of the harness. Therefore, it is possible to easily connect the in-vehicle video distributor 10 of this embodiment, the in-vehicle video device 35, and the monitor device 40.

The vehicle-mounted video distributor 10 configured as described above can be used as follows.
FIG. 2 is an explanatory diagram showing a schematic configuration of a connection example of the in-vehicle video distributor 10 according to the present embodiment. Here, a power supply line and a control signal line for power supply control are indicated by a solid line, and a video signal line is indicated by a one-dot chain line.

  A vehicle-mounted video device 35 such as a DVD player is connected to the input unit 12 side of the vehicle-mounted video distributor 10 of the present embodiment. A plurality of monitor devices 40a, 40b, and 40c are connected to the output unit 13 side.

  First, when the in-vehicle video device 35 is activated and a video is output from the in-vehicle video device 35, a video signal is input to the video input terminal 23 of the in-vehicle video distributor 10. The input video signal is detected by the video signal detection means 18. At this time, the first power control switch 20 is closed. Therefore, the power supplies of the plurality of monitor devices 40a, 40b, and 40c connected to the power output terminal are turned on.

  Next, when the video signal is not output from the in-vehicle video device 35, such as when the power of the in-vehicle video device 35 is turned off, the video signal detection means 18 does not detect the video signal. At this time, the first power control switch 20 is opened. Therefore, the power supplies of the connected monitor devices 40a, 40b, and 40c are turned off.

  If the first power supply control switch 20 is opened and closed as described above, the power supplies of a plurality of monitor devices 40a, 40b, and 40c can be collectively controlled. In addition, the power of the monitor devices 40a, 40b, and 40c can be automatically turned on or off in conjunction with the video signal. For this reason, it is not necessary to directly operate the power supplies of the connected monitor devices 40a, 40b, and 40c, so that it is possible to save the operation time.

An in-vehicle video distributor 10A according to a second embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 3 is a block diagram schematically illustrating the configuration of the in-vehicle video distributor 10A according to the present embodiment. Here, as in the first embodiment, the power supply line and the control signal line for power supply control are indicated by a solid line, and the video signal line is indicated by a one-dot chain line.

The in-vehicle video distributor 10 </ b> A includes a distributor body 11 </ b> A, an input unit 12, and an output unit 13.
The power supply circuit 14 and the video circuit 15 provided in the distributor main body 11A are the same as those in the first embodiment. Therefore, description of the power supply circuit 14 and the video circuit 15 is omitted. Further, the input unit 12 and the output unit 13 are configured in the same manner as in the first embodiment. Therefore, the description is omitted.
On the other hand, in this embodiment, a delay circuit 26 is provided in the distributor main body 11A. The delay circuit 26 is arranged on the signal line 21 for the detection signal and has a circuit configuration for delaying the response time of the first power supply control switch 20 for the signal detection of the video signal.

  FIG. 4 shows a chart of the video signal detection timing and the opening / closing timing of the first power control switch 20 in the in-vehicle video distributor 10A configured as described above. Here, the delayed response time of the first power supply control switch 20 is defined as a delay time T. The usage method for connecting the in-vehicle video device 35 and the monitor devices 40a, 40b, and 40c to the in-vehicle video distributor 10A is the same as that in the first embodiment.

First, when a video signal is detected, the first power control switch 20 is closed substantially simultaneously with the signal detection.
Thereafter, when the video from the in-vehicle video device 35 is interrupted for a short time, for example, when the in-vehicle video device 35 is switched from the DVD player to the TV tuner, or when the DVD player is operated, the interrupted time is delayed. If it is within time T, the first power supply control switch 20 is held closed by the delay circuit 26. Therefore, the power of the monitor devices 40a, 40b, and 40c is not turned off.

  On the other hand, after the video signal output from the in-vehicle video equipment is interrupted and the video signal is not input again within the delay time T, the first power source is as much as possible after the delay time T has elapsed. The control switch 20 is opened. Therefore, the power supplies of the monitor devices 40a, 40b, and 40c are turned off.

By controlling the opening / closing timing of the first power control switch 20 as described above, it is possible to prevent the power of the monitor devices 40a, 40b, and 40c from being finely cut off in response to video switching or the like.
When the video is switched or the video signal is input again, the monitor devices 40a, 40b, and 40c are kept turned on if the delay time is within T. Therefore, the video input from the in-vehicle video device 35 can be displayed instantaneously.

An in-vehicle video distributor 10B according to a third embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 5 is a block diagram showing an outline of the configuration of the in-vehicle video distributor 10B according to the present embodiment. Here, as in the first embodiment or the second embodiment, the power supply line and the control signal line for power supply control are indicated by a solid line, and the video signal line is indicated by a one-dot chain line.

The on-vehicle video distributor 10B includes a distributor body 11B, an input unit 12B, and an output unit 13B.
The video circuit 15 and the delay circuit 26 of the distributor main body 11B are provided in the same manner as in the first or second embodiment. Therefore, description of the video circuit 15 and the delay circuit 26 is omitted.
On the other hand, a remote signal detection means 27 and a bypass circuit 28 are provided in the power supply circuit 14B of the distributor main body 11B. Further, the power control means 16B is provided with a second power control switch 29 for turning on or off the power supplied to the monitor device 40c based on the signal detection of the remote signal.
Here, the remote signal is a signal other than the video signal of the in-vehicle video equipment 35, such as a reverse signal that activates a reverse lamp, a back camera, or the like when the gear is changed to the reverse gear.

The remote signal detector 27 detects a remote signal such as a reverse signal.
The power supply control means 16B is provided with a first power supply control switch 20 as in the first or second embodiment. A first power control switch 20 and a second power control switch 29 are arranged in parallel with the bypass circuit 28 on the bypass circuit 28 side of the power control means 16B. When the remote signal is detected by the remote signal detection means 27, the detection signal is transmitted to the power control means 16B via the signal line 30.

Therefore, when either the first power control switch 20 or the second power control switch 29 of the power control means 16B is closed, the bypass circuit 28 is energized.
Further, the bypass circuit 28 has bypass power distribution means 31. Similar to the power distribution unit 17, the bypass power distribution unit 31 branches the power supplied to each monitor device 40 and outputs it to the output unit 13B.

The input unit 12B is provided with the power input terminal 22 and the video input terminal 23 in the same manner as in the first or second embodiment. Further, the input unit 12B also has a remote input terminal 32 to which a reverse signal or the like is input, for example.
Further, the video output terminal 24 and the power output terminal 25 are provided in the output unit 13B in the same manner as in the first or second embodiment. The output unit 13B is provided with a bypass power output terminal 33 that outputs power supplied from the bypass power distribution means 31 to the monitor device 40c.

The in-vehicle video distributor 10B configured as described above can be used as follows.
FIG. 6 is an explanatory diagram showing a schematic configuration of a connection example of the in-vehicle video distributor 10B according to the present embodiment. Here, as in the first and second embodiments, the power supply line and the control signal line for power control are indicated by a solid line, and the video signal line is indicated by a one-dot chain line.

The monitor device 40a and the monitor device 40b are connected so that the video from the in-vehicle video equipment 35 is distributed and the power from the external power source is distributed, as in the first or second embodiment.
The monitor device 40c receives video from the in-vehicle video equipment 35 and the back camera 36. Therefore, it is desirable that the monitor device 40c includes two or more video input terminals.
Here, with respect to the monitor device 40c, the video from the in-vehicle video device 35 is distributed and input via the in-vehicle video distributor 10B. On the other hand, the video from the back camera 36 is directly input.
The power supply of the monitor device 40c is connected to the bypass power supply output terminal 33 of the in-vehicle video distributor 10B.
The remote input terminal 32 is connected to a reverse signal output unit composed of a power source or the like that lights a reverse lamp in conjunction with the reverse gear.

  Here, regarding the power supplied to the monitoring device 40a, the monitoring device 40b, and the monitoring device 40c, when the first power control switch 20 is closed, the power to be set is “normal power”, and the second power control switch 29 or When the first power control switch 20 is closed, the power set via the bypass circuit 28 is referred to as “bypass power”.

  The power to be supplied to the monitor device 40a and the monitor device 40b is determined by opening and closing the first power control switch 20 based on whether or not a video signal is input, as in the first or second embodiment. Therefore, explanation is omitted.

  As shown in Table 1, the power supplied to the monitor device 40c is either the first power control switch 20 or the second power control switch based on whether a video signal is input or a reverse signal is input. 29 is determined by opening and closing.

The power supplied to the monitor device 40c is turned on or off by a video signal or a remote signal. This will be described below with reference to Table 1.
(1) When no video signal is input At this time, all the normal power supplies are turned off. Then, the bypass power supply is output according to the signal detection of the remote signal as follows.
B) When no remote signal is input In this case, both the first power control switch 20 and the second power control switch 29 are open. Therefore, since the bypass power supply is turned off, the power supply of the monitor device 40c is turned off.
B) When a remote signal is input In this case, the second power control switch 29 is closed. Therefore, since the bypass power supply is turned on, the power supply of the monitor device 40c is turned on.
At this time, the in-vehicle video equipment 35 is not operating. Therefore, only the video output from the back camera 36 is input to the monitor device 40c. Therefore, if the monitor device 40c is installed at an easy-to-view position for the driver and the monitor devices 40a and 40b are installed at an easy-to-view position from the passenger seat or the rear seat, the vehicle-mounted video equipment 35 such as a DVD player is used. Even if not, the video from the back camera 36 can be displayed on the monitor device 40c installed for the driver.

(2) When a video signal is input At this time, all the normal power supplies are turned on. Then, the bypass power supply is output according to the signal detection of the remote signal as follows.
B) When no remote signal is input In this case, the first power control switch 20 is closed. On the other hand, the second power control switch 29 is open. Therefore, the power source of the monitor device 40c is turned on.
At this time, the video from the back camera 36 is not input to the monitor device 40c, and only the video from the in-vehicle video device 35 is input.
B) When a remote signal is input In this case, both the first power control switch 20 and the second power control switch 29 are closed. Therefore, the power source of the monitor device 40c is turned on.
Here, the video from the in-vehicle video device 35 and the video from the back camera 36 are input to the monitor device 40c. Therefore, it is preferable that the monitor device 40c includes a video switching unit at the video input terminal. Furthermore, if the video switching means is configured to be able to switch the video in conjunction with a remote signal or the like, the video transmitted from either the back camera 36 or the in-vehicle video equipment 35 is monitored. The device 40c can be selected and displayed.

  As described above, according to the third embodiment, when the back camera 36 is activated, the power supplied to the monitor device 40c is remotely turned on or off based on the remote signal composed of the reverse signal or the like used for the activation. Can be operated. Therefore, even if there is no video signal from the in-vehicle video equipment 35, the power of the monitor device 40c can be turned on or off.

  Further, a remote signal composed of a reverse signal is input to the remote input terminal 32 provided in the input unit 12B. However, the present invention is not limited to this. Even if the input signal is a video signal of a back camera, etc., if the video signal can be detected by the remote signal detection means, the monitor device 40c can be The power to be supplied can also be controlled by a video signal from the back camera.

1 is a block diagram illustrating a schematic configuration of an in-vehicle video distributor according to Embodiment 1. FIG. FIG. 3 is an explanatory diagram illustrating a schematic configuration of a connection example of the in-vehicle video distributor according to the first embodiment. It is the block diagram which showed schematic structure of the vehicle-mounted video distributor which concerns on Example 2. FIG. It is a timing chart figure of the delay circuit of the vehicle-mounted video distributor which concerns on Example 2. FIG. It is the block diagram which showed schematic structure of the vehicle-mounted video distributor which concerns on Example 3. FIG. It is explanatory drawing which showed schematic structure of the example of a connection of the vehicle-mounted video distributor which concerns on Example 3. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10,10A, 10B ... Vehicle-mounted video distributor, 11, 11A, 11B ... Distributor main body, 12, 12B ... Input part, 13, 13B ... Output part, 14 ... Power supply circuit, 15 ... Video circuit,
16, 16B ... power control means, 17 ... power distribution means,
18 ... Video signal detection means, 19 ... Video signal distribution means,
20 ... 1st power supply control switch, 21 ... Video signal detection signal line,
22 ... Power input terminal, 23 ... Video input terminal, 24 ... Video output terminal, 25 ... Power output terminal,
26 ... delay circuit,
27 ... Remote signal detection means, 28 ... Bypass circuit,
29 ... second power supply control switch, 30 ... remote signal detection signal line,
31 ... Bypass power distribution means, 32 ... Remote input terminal, 33 ... Bypass power output terminal,
35 ... In-vehicle video equipment, 36 ... Back camera,
40, 40a, 40b, 40c... Monitor device.

Claims (3)

  1. An input unit having a power input terminal connected to an external power source and a video input terminal to which a video signal is input from an in-vehicle video device;
    An output unit having at least one power output terminal connected to a power input unit of a plurality of monitor devices, and a video output terminal for outputting a video signal to the monitor device;
    In-vehicle use comprising: a power supply circuit that distributes power input from an external power supply to each of the monitor devices; and a distributor main body provided with a video circuit that distributes video signals input from the in-vehicle video equipment to each of the monitor devices. In the video distributor,
    Provided in the power supply circuit is a power supply control means for turning on or off the power supplied to each monitor device,
    The video circuit is provided with video signal detection means for detecting a video signal from the in-vehicle video device,
    Based on the video signal detection by the video signal detection means,
    A vehicle-mounted video distributor characterized in that the power supplied to each monitor device is turned on or off by the power control means.
  2. When the video signal is stopped within a predetermined time on the signal line of the detection signal for transmitting the detection result of the video signal detection unit to the power control unit, the power control indicates that the video signal has stopped. Provide a delay circuit that does not transmit to the means,
    The in-vehicle video distributor according to claim 1, wherein even when the video signal is stopped, the power supplied to each of the monitor devices is not turned off simultaneously with the stop of the video signal. .
  3. The input unit is provided with a remote input terminal, the power supply circuit is provided with remote signal detection means, and the power supply for each monitor device is turned on or off by either the remote signal detection means or the video signal detection means on the distributor body. Provide a bypass circuit to turn off,
    When a remote signal for remotely operating the power supplied to each monitor device is input to the remote input terminal and the remote signal is detected by the remote signal detection means,
    3. The vehicle-mounted device according to claim 1, wherein a power supplied to each of the monitor devices connected to the bypass circuit is turned on regardless of a signal detection state of the video signal. Video distributor.
JP2007167043A 2007-06-26 2007-06-26 On-vehicle image distributor Pending JP2009006734A (en)

Priority Applications (1)

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JP2007167043A JP2009006734A (en) 2007-06-26 2007-06-26 On-vehicle image distributor

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Application Number Priority Date Filing Date Title
JP2007167043A JP2009006734A (en) 2007-06-26 2007-06-26 On-vehicle image distributor

Publications (1)

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JP2009006734A true JP2009006734A (en) 2009-01-15

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Application Number Title Priority Date Filing Date
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08124244A (en) * 1994-10-27 1996-05-17 Mitsubishi Electric Corp Signal-recording/reproducing apparatus
JPH09193710A (en) * 1996-01-24 1997-07-29 Matsushita Electric Ind Co Ltd Camera system display device
JPH10236228A (en) * 1997-02-25 1998-09-08 Nec Home Electron Ltd On-board dead angle monitoring device
JPH10336638A (en) * 1997-05-27 1998-12-18 Asahi Optical Co Ltd Video signal switching device for endoscope system
JP2006295748A (en) * 2005-04-14 2006-10-26 Hitachi Ltd Content reproducing apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08124244A (en) * 1994-10-27 1996-05-17 Mitsubishi Electric Corp Signal-recording/reproducing apparatus
JPH09193710A (en) * 1996-01-24 1997-07-29 Matsushita Electric Ind Co Ltd Camera system display device
JPH10236228A (en) * 1997-02-25 1998-09-08 Nec Home Electron Ltd On-board dead angle monitoring device
JPH10336638A (en) * 1997-05-27 1998-12-18 Asahi Optical Co Ltd Video signal switching device for endoscope system
JP2006295748A (en) * 2005-04-14 2006-10-26 Hitachi Ltd Content reproducing apparatus

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