JP2002271703A - Video radio transmitting and receiving system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video radio transmitting and receiving system that enhances the operability of switching operation of a plurality of video inputs and reduces power consumption of a transmitter side/receiver side power supply circuit section. SOLUTION: When an operation means 40 in a video receiver 30 operates selection of a video input, a receiver side control circuit section 39 controls a data signal generating circuit section 38 to generate a selection data signal. A transmitter side control circuit section 19 in a video transmitter 10 controls a video input changeover circuit section 14 to select one of a plurality of video signal generators 11, 12, 13 based on the selection data signal and controls a 1st switch circuit section 20 to start supply of power from a transmitter side power supply circuit 17 to only a selected video signal generator.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video radio transmitting / receiving system comprising a video transmitter for transmitting a video signal by radio and a video receiver for receiving the video signal transmitted by radio. .

[0002]

2. Description of the Related Art FIG. 10 is a block circuit diagram showing a schematic configuration of a conventional video radio communication system. The conventional video radio communication system 50 shown in FIG. 10 has the following circuit configuration. The video wireless communication system 50 includes a video transmitter 60 and a video receiver 70.

The video transmitter 60 comprises video signal generators 61, 62, 63, a video input switching circuit 6
4. A video signal generator 61, 6 comprising a video transmission circuit section 65, an antenna 66 and a transmission side power supply circuit section 67.
2 and 63 are connected to the input of the video transmission circuit section 65 via the video input switching circuit section 64,
The output of 5 is connected to an antenna 66, and the transmission side power supply circuit section 67 is connected to the video signal generators 61, 62, 63 and the video transmission circuit section 65.

A video receiver 70 has an antenna 7
1, a video receiving circuit section 72, an audio circuit section 73, a display circuit section 74, and a receiving side power supply circuit section 75.
1 is connected to the input of the video receiving circuit 72, and the output of the video receiving circuit 72 is connected to the audio circuit 73 and the display circuit 7
4, the receiving-side power supply circuit 75 is connected to the video receiving circuit 72, the audio circuit 73, and the display circuit 74.

Next, the operation of the conventional video radio communication system 50 shown in FIG. 10 will be described. In the video transmitter 60, one of the video signal generators 61, 62 and 63 is selected by switching the video input switching circuit 64. In FIG. 10, for example, the video signal generator 62 is selected. The video signal output from the video signal generator 62 is converted into a high-frequency video signal by the video transmission circuit section 65 and transmitted from the antenna 66 to the video receiver 70. The transmission-side power supply circuit section 67 supplies power to the video signal generators 61, 62, 63 and the video transmission circuit section 65.

[0006] In the video receiver 70, the high frequency video signal transmitted from the video transmitter 60 is received by the antenna 71. The received high-frequency video signal is converted into a video signal and an audio signal by a video receiving circuit section 72, the video signal is displayed as an image by a display circuit section 74, and the audio signal is converted into audio by an audio circuit section 73. The receiving-side power supply circuit section 75 supplies power to the video receiving circuit section 72, the audio circuit section 73, and the display circuit section 74.

[0007]

However, in the above-mentioned prior art, since the video transmitter 60 and the video receiver 70 are installed at remote places, there are the following problems.

That is, by switching the video input switching circuit section 64 of the video transmitter 60, one of the video signal generators 61, 62, 63 is selected to use the video receiver 70 while watching the video receiver 70. Each time the user switches the video input switching circuit section 64, the user moves to the place where the video transmitter 60 is installed, and
This is very inconvenient because the video input switching circuit section 64 must be switched.

Further, since power is always supplied from the transmission side power supply circuit section 67 to all of the video signal generators 61, 62 and 63, in FIG. The signal generators 61 and 63 are operating, and the transmission-side power supply circuit unit 67 consumes useless power, which is not preferable. For example, when the transmission-side power supply circuit section 67 is formed of a battery or the like, there is a problem that the battery is wasted and the battery life is shortened.

[0010] When the user watching the video receiver 70 stops viewing, the video transmitter 60 is stopped.
Has to be moved to the place where is installed and the power of the video signal generators 61, 62 and 63 of the video transmitter 60 must be turned off, which is very inconvenient.

Further, the user watching the video receiver 70 does not know the operation state of the video signal generators 61, 62, 63 from the video receiver 70 side. If the user forgets to turn off the power of the devices 61, 62, 63, the video signal generators 61, 62, 63 are operating even though the user is not watching, and the transmission side power supply circuit 67 is Unnecessary power is consumed, which is not preferable. For example, when the transmission-side power supply circuit section 67 is formed of a battery or the like, there is a problem that the battery is wasted and the battery life is shortened.

The user watching the video receiver 70 has the video signal generators 61, 62 and 63 installed at remote locations, so that the video signal generator 6
There was an inconvenience that the connection state between the video input switching circuit unit 64 and the video input switching circuit unit 64 could not be confirmed from the video receiver 70 side.

A user watching the video receiver 70 cannot check the connection state between the video signal generators 61, 62, 63 and the video input switching circuit 64 from the video receiver 70 side. However, when the connection state changes, there is a problem that an erroneous switching operation of the video input switching circuit unit 64 is performed without noticing the change.

The present invention has been made in order to solve the above-mentioned problem, and has been made in consideration of the switching when selecting one of a plurality of video signal generators 61, 62, 63 of a video transmitter 60. It is an object of the present invention to provide a video wireless transmission / reception system in which operability is improved and unnecessary power consumption of the transmission-side power supply circuit section 67 and the reception-side power supply circuit section 75 is eliminated.

[0015]

In order to solve the above-mentioned problems, the present invention provides a plurality of different video signal generators, a video input switching circuit for selecting one of the plurality of video signal generators, A video transmission circuit unit that converts a video signal from the selected video signal generator into a high-frequency video signal and transmits the video signal, and a video transmitter including a transmission-side power supply circuit unit that supplies power to each of the circuit units. A video receiving circuit unit that receives the high-frequency video signal and converts it into a video signal and an audio signal, a display circuit unit that displays the video signal as an image, an audio circuit unit that converts the audio signal into audio, And a video receiver having a receiving-side power supply circuit unit that supplies power to the circuit unit, wherein the video receiver includes the video wireless transmission / reception system. A data signal generating circuit for generating a data signal for controlling operation, a data transmitting circuit for converting the data signal into a high-frequency data signal and transmitting the signal, and an operating means for operating the display circuit and the audio circuit And a receiving-side control circuit unit that controls the data signal generation circuit unit based on the operation of the operation unit, wherein the video transmitter receives the high-frequency data signal and converts the high-frequency data signal into an original data signal. A receiving circuit unit, comprising a transmitting control circuit unit that controls the video input switching circuit unit based on the data signal, when a video input selection operation is performed by the operating means, the receiving control circuit unit, The data signal generation circuit is controlled to generate a selection data signal, and the transmission side control circuit is configured to control the plurality of video signal generation devices based on the selection data signal. It is characterized in that to control the video input switching circuit portion to select one of the.

Further, according to the present invention, the video transmitter includes a first switch circuit unit for individually turning on / off a power supply from the transmission-side power supply circuit unit to the plurality of video signal generators, and the operation means When a video input selecting operation is performed by the first switch circuit, the first switch circuit is configured to turn on the power supply from the transmission power supply circuit unit only to the selected video signal generator. This is characterized by controlling the section.

Further, according to the present invention, the video receiver includes a second switch circuit unit for turning on / off a power supply from the reception side power supply circuit unit to the display circuit unit and the audio circuit unit. When the power is turned off,
The reception-side control circuit unit controls the data signal generation circuit unit to generate an off data signal,
The second switch circuit is controlled so as to turn off the power supply from the reception power supply to the display circuit and the audio circuit, and the transmission control circuit controls the transmission based on the off data signal. The first switch circuit section is controlled so that power supply from the side power supply circuit section to all of the plurality of video signal generators is turned off.

Further, according to the present invention, the video input switching circuit section has a plurality of video input terminals for connecting the plurality of video signal generators, and the operation means includes an infrared remote controller transmitter, A remote control light receiving circuit for converting an infrared remote control signal from an infrared remote control transmitter into an electric signal, wherein the video receiver has a memory circuit storing a video signal generator connected to each of the plurality of video input terminals. And a determination means for determining a video signal generation device from a remote control signal of an infrared remote control transmitter of the video signal generation device. When receiving a remote control signal of a remote control transmitter, the video signal generator operated by the determination unit is determined, A video input terminal to which the operated video signal generator is connected is read from a memory circuit unit, and the data signal generation circuit unit is controlled so as to generate a selection data signal for selecting the video input terminal. It is assumed that.

Also, the present invention is characterized in that the video receiver has mode setting means for setting and canceling a video input setting mode, and when the video receiver is set in the video input setting mode,
A first input unit for selecting and inputting one of the plurality of video input terminals; and a video signal generator connected to the selected video input terminal when the video input setting mode is set. And a second input means for inputting, wherein the receiving-side control circuit section comprises: the video input terminal input by the first input means; and the video signal generator input by the second input means. And
Each pair is stored in the memory circuit section.

Further, according to the present invention, the first input means includes:
A first infrared remote control transmitter for operating the display circuit unit and the audio circuit unit, wherein the second input unit includes:
It is a second infrared remote control transmitter for operating the video signal generator.

Further, the present invention is characterized in that the video receiver includes display means for displaying a video signal generator connected to each of the plurality of video input terminals stored in the memory circuit section. It is assumed that.

Further, the present invention is characterized in that the video signal generating device of the video transmitter is a video reproducing device, and the display circuit and the audio circuit of the video receiver are televisions. It is.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] FIG. 1 is a block circuit diagram showing a schematic configuration of a video radio transmission / reception system according to a first embodiment of the present invention.
FIG. 3 is a flowchart illustrating the operation of the receiving-side control circuit of the video receiver of the video wireless transmission / reception system according to the first embodiment of the present invention. FIG. 3 is a flowchart illustrating the operation of the first embodiment of the present invention. FIG. 4 is a flowchart for explaining the operation of the transmission-side control circuit unit of the video transmitter of the video wireless transmission / reception system according to FIG. Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a block circuit diagram showing a schematic configuration of the video radio transmission / reception system of the present embodiment. Figure 1
The video wireless transmission / reception system 1 of the present embodiment has the following circuit configuration. The video wireless transmission / reception system 1 includes a video transmitter 10 and a video receiver 30.

The video transmitter 10 includes video signal generators 11, 12, and 13, a video input switching circuit 14, a video transmission circuit 15, an antenna 16, and a transmission side power supply circuit 1.
7, a data receiving circuit section 18, a transmitting side control circuit section 19, and a first switch circuit section 20. Further, the first switch circuit section 20 is configured by switches 20a, 20b, and 20c.

The video signal generators 11, 12,
Reference numeral 13 is connected to an input of a video transmission circuit unit 15 via a video input switching circuit unit 14, and an output of the video transmission circuit unit 15 is connected to an antenna 16.

The antenna 16 is connected to the input of the data receiving circuit section 18, and the output of the data receiving circuit section 18 is connected to the input of the transmitting side control circuit section 19. The output is the video input switching circuit 1
4 and the other output of the transmission-side control circuit 19 is
It is connected to the first switch circuit section 20.

The transmission-side power supply circuit section 17 is directly connected to the video input switching circuit section 14, the video transmission circuit section 15, the data reception circuit section 18, and the transmission-side control circuit section 19, 11, 12 and 13 include switches 20 a and 20 of the first switch circuit unit 20.
b, 20c.

The video receiver 30 has the antenna 3
1, video receiving circuit section 32, audio circuit section 33, display circuit section 34, receiving side power supply circuit section 35, second switch circuit section 36, data transmitting circuit section 37, data signal generating circuit section 3
8, the receiving side control circuit section 39 and the operating means 40.

The antenna 31 is connected to the input of the video receiving circuit 32, and the output of the video receiving circuit 32 is connected to the audio circuit 33 and the display circuit 34. The operation means 40 is connected to an input of the reception-side control circuit 39, and one output of the reception-side control circuit 39 is
The other output of the receiving-side control circuit 39 is connected to the input of the data signal generating circuit 38 and is connected to the second switch circuit 3
6 is connected. The output of the data signal generation circuit section 38 is connected to the antenna 31 via the data transmission circuit section 37.

The receiving power supply circuit 35 is directly connected to the video receiving circuit 32, the data transmitting circuit 37, the data signal generating circuit 38, the receiving control circuit 39, and the operating means 40. The circuit section 33 and the display circuit section 34 are connected via a second switch circuit section 36.

Next, the operation of the video wireless transmission / reception system 1 of this embodiment shown in FIG. 1 will be described. Video transmitter 1
At 0, one of the video signal generators 11, 12, and 13 is selected by switching the video input switching circuit unit 14. In FIG. 1, for example, the video signal generator 12 is selected. The video signal output from the video signal generator 12 is converted into a high-frequency video signal by the video transmission circuit unit 15 and transmitted from the antenna 16 to the video receiver 30.

The high-frequency data signal from the video receiver 30 received by the antenna 16 is transmitted to the data receiving circuit 1.
8, the data signal is converted into the original data signal, and this data signal is input to the transmission-side control circuit unit 19. The transmission-side control circuit unit 19 selects one of the video signal generators 11, 12, and 13 by switching the video input switching circuit unit 14 based on the data signal.

The transmission-side control circuit section 19 controls the first switch circuit section 20 based on the data signal, so that the transmission-side power supply circuit section 17 controls the video signal generators 11, 12, and 13 respectively. On / off control of the supplied power is performed. Also, from the transmission side power supply circuit section 17,
Power is directly supplied to the video input switching circuit section 14, the video transmission circuit section 15, the data reception circuit section 18, and the transmission side control circuit section 19.

In the video receiver 30, the high-frequency video signal transmitted from the video transmitter 10 is received by the antenna 31. The received high-frequency video signal is converted into a video signal and an audio signal by a video receiving circuit unit 32, the video signal is displayed as an image by a display circuit unit 34, and the audio signal is converted into audio by an audio circuit unit 33.

The receiving side control circuit section 39 controls the second switch circuit section 36 and the data signal generating circuit section 38 based on an operation from the operation means 40. By controlling the second switch circuit section 36, the power supplied from the receiving-side power supply circuit section 35 to the audio circuit section 33 and the display circuit section 34 is turned on and off. In addition, power is directly supplied from the receiving side power supply circuit section 35 to the video receiving circuit section 32, the data transmitting circuit section 37, the data signal generating circuit section 38, the receiving side control circuit section 39, and the operation means 40. .

Under the control of the receiving side control circuit 39, the data signal output from the data signal generating circuit 38 is converted into a high frequency data signal by the data transmitting circuit 37, Sent to

FIG. 2 is a flowchart for explaining the operation of the receiving-side control circuit 39 of the video receiver 30 of the video radio transmitting / receiving system 1 according to the first embodiment of the present invention. The receiving side control circuit section 39 is constituted by, for example, a microcomputer. The operation of the receiving-side control circuit unit 39 when the receiving-side control circuit unit 39 is constituted by a microcomputer will be described below with reference to FIG.

In step S1, it is checked whether or not an operation has been performed from the operation means 40. When the operation is performed, the process proceeds to step S2.

In step S2, it is checked whether the operation is a "video input selection operation". If it is a "video input selection operation", the process moves to step S3, and if it is not a "video input selection operation", the process moves to step S6.

In step S3, "video input 1"
Check whether or not was selected. If “video input 1” has been selected, the data signal generation circuit 38 generates a “video input 1 selected data signal”. Also,
If “video input 1” has not been selected, the process proceeds to step S4.

In step S4, "video input 2"
Check whether or not was selected. If "video input 2" has been selected, the data signal generation circuit 38 generates a "video input 2 selected data signal". Also,
If “video input 2” has not been selected, the process proceeds to step S5.

In step S5, "video input 3"
Check whether or not was selected. If "video input 3" has been selected, the data signal generation circuit 38 generates a "video input 3 selected data signal".

In step S6, it is checked whether the operation is a "power-off operation". In the case of “power-off operation”, after the data signal generation circuit unit 38 generates an “off data signal”, the second switch circuit unit 36
(SW2) is turned off.

As described above, when the “video input selecting operation” is performed by the operating means 40, the receiving side control circuit 3
9 controls the data signal generation circuit unit 38 to generate a “selected data signal”. Further, when the “power-off operation” is performed by the operation unit 40, the reception-side control circuit unit 39 controls the data signal generation circuit unit 38 to generate an “off data signal”, and The second switch circuit unit 36 is controlled so that the power supply from the unit 35 to the display circuit unit 33 and the audio circuit unit 34 is turned off.

FIG. 3 is a flowchart for explaining the operation of the transmission-side control circuit unit 19 of the video transmitter 10 of the video radio transmission / reception system 1 according to the first embodiment of the present invention. The transmission-side control circuit unit 19 is constituted by, for example, a microcomputer. The operation of the transmission-side control circuit unit 19 when the transmission-side control circuit unit 19 is constituted by a microcomputer will be described below with reference to FIG.

In step S1, it is checked whether a data signal has been input from the data receiving circuit section 18. When the data signal is input, the process proceeds to step S2.

In step S2, it is checked whether the data signal is a "selected data signal". If it is a "selection data signal", the process proceeds to step S3, and if it is not a "selection data signal", the process proceeds to step S6.

In step S3, it is checked whether the data signal is a "video input 1 selection data signal". In the case of “video input 1 selection data signal”, after switching the video input switching circuit section 14 to “video input 1”, the switch 20a (SW1a) is turned on, and the switch 2
0b (SW1b) off, switch 20c (SW1c)
Turn off. If the data signal is not the "video input 1 selection data signal", the process proceeds to step S4.

In step S4, it is checked whether the data signal is a "video input 2 selection data signal". In the case of the “video input 2 selection data signal”, the switch 20a (SW1a) is turned off and the switch 2
0b (SW1b) ON, switch 20c (SW1c)
Turn off. If the data signal is not the "video input 2 selection data signal", the process proceeds to step S5.

In step S5, it is checked whether the data signal is a "video input 3 selection data signal". If it is "video input 3 selection data signal", after switching the video input switching circuit section 14 to "video input 3", the switch 20a (SW1a) is turned off, and the switch 2
0b (SW1b) off, switch 20c (SW1c)
Turn on.

In step S6, it is checked whether the data signal is an "off data signal". If it is an “off data signal”, the switch 20a (SW1
a), 20b (SW1b) and 20c (SW1c) are all turned off.

As described above, the transmission side control circuit section 19
The video input switching circuit 14 is controlled so as to select one of the video signal generators 11, 12, and 13 based on the "selected data signal". Further, the transmission side control circuit section 19 controls the first switch circuit section 20 so as to turn on the power supply from the transmission side power supply circuit section 17 only to the selected video signal generator. Further, the transmission-side control circuit unit 19 transmits the plurality of video signal generators 1 from the transmission-side power supply circuit unit 17 based on the “off data signal”.
The first is to turn off all power supply to 1, 12, 13
Is controlled by the switch circuit unit 20 of FIG.

[Second Embodiment] FIG. 4 is a block circuit diagram showing a schematic configuration of a video radio transmission / reception system according to a second embodiment of the present invention, and FIG. FIG. 6 is a diagram for explaining a state of memory contents of a memory circuit unit of a video receiver of the video wireless transmission / reception system according to the second embodiment. FIG. 6 is a diagram illustrating a video wireless transmission / reception system according to a second embodiment of the present invention. FIG. 7 is a diagram for explaining a state of a remote control signal of a remote control transmitter of the video signal generating apparatus of FIG. FIG. 4 is a flowchart illustrating the operation of FIG. Hereinafter, a second embodiment of the present invention will be described with reference to FIGS.

FIG. 4 is a block circuit diagram showing a schematic configuration of the video radio transmission / reception system 2 of the present embodiment. The video wireless transmission / reception system 2 of the present embodiment is different from the video wireless transmission / reception system 1 of FIG.
1 except that the video input switching circuit section 14 has video input terminals 14a, 14b, and 14c.

In the video receiver 30, the operation means 40 is composed of an infrared remote control transmitter (operation means) 42 and a remote control light receiving circuit section (operation means) 41, and an on-screen display (OSD) circuit section (OSD). Display means)
43, only the operation of the receiving side control circuit unit 39 is different from that of FIG. Therefore, the same parts as those of the video wireless transmission / reception system 1 of FIG.
The points different from the above will be described below.

In the video transmitter 10, the video input switching circuit section 14 has video input terminals 14a, 14b, 14
c, and the video signal generators 11, 12, 13
Are connected to video input terminals 14a, 14b and 14c, respectively. Video input terminals 14a, 14b, 14c
, The video signal generators 11, 12,
13 can be replaced arbitrarily or another video signal generator (not shown) can be connected.

In the video receiver 30, the remote control light receiving circuit section 41 is connected to the receiving side control circuit section 39, converts the infrared remote control signal from the infrared remote control transmitter 42 into an electric signal, and sends the electric signal to the receiving side control circuit section 39. input.

The memory circuit section 45 is connected to the receiving side control circuit section 39, and receives the video input terminals 14a, 14b,
14c connected to each of the video signal generators 11,
12 and 13 are stored in the memory.

The on-screen display (OSD) circuit section 43 is provided between the video receiving circuit section 32 and the display circuit section 34, and further includes an on-screen display (OSD) circuit.
The circuit section 43 is connected to the receiving side control circuit section 39. The receiving-side control circuit 39 outputs OSD data relating to characters to be displayed on-screen on the image display of the display circuit 34 to an on-screen display (OSD) circuit 43. The on-screen display (OSD) circuit section 43 synthesizes characters with the video signal from the video receiving circuit section 32 based on the OSD data, thereby displaying the display circuit section 3.
4 can be displayed on-screen on the image display.

The discriminating means 44 is included in the receiving side control circuit section 39, and discriminates the video signal generator from the remote control signals of the infrared remote controller transmitters (not shown) of the video signal generators 11, 12, and 13.

Power is directly supplied to the remote control light receiving circuit section 41, the on-screen display (OSD) circuit section 43, the determination section 44, and the memory circuit section 45 from the receiving side power supply circuit section 35.

FIG. 5 is a diagram for explaining the state of the memory contents of the memory circuit section 45 of the video receiver 30 of the video wireless transmission / reception system 2 of the present embodiment. In the memory contents shown in FIG. 5, for example, the video input terminals 14a, 14b, and 14c of the video input switching circuit section 14 correspond to the video inputs 1, 2, and 3, respectively, and the video input terminals 14a, 14
Video signal generator 1 connected to each of b and 14c
Reference numeral 1 corresponds to a company A video playback device, video signal generator 12 corresponds to a company B video playback device, and video signal generator 13 corresponds to a company C video playback device.

As shown in FIG. 5, the memory circuit 45 has a video input terminal 14a of the video input switching circuit 14.
(Video input 1) Connected video signal generator 1
1 (Company A video playback device), video input switching circuit section 14
Video signal generator 12 (company B video playback device) connected to video input terminal 14b (video input 2), and video signal generator connected to video input terminal 14c (video input 3) of video input switching circuit section 14. Device 13 (C
(A video playback device) is stored in pairs.

FIG. 6 is a diagram for explaining a state of a remote control signal of a remote control transmitter of a video signal generation device of a video radio transmission / reception system according to a second embodiment of the present invention. The remote control signal includes at least a discrimination code and a data code.

The discrimination code corresponds to the video signal generator 1
1 (Company A video playback device), Video signal generator 12
(Company B video playback device) and video signal generator 13
In order to determine the (company C video playback device), for example, different codes are set for the companies A, B, and C, respectively.

In FIG. 6, for example, the video signal generator 1
1 (company A video playback device) = “01”, video signal generator 12 (company B video playback device) = “10” and video signal generator 13 (company C video playback device) = “11” I have.

The data code is, for example, a code set for each function such as channel, volume, power supply and the like.

FIG. 7 is a flowchart for explaining the operation of the receiving side control circuit section 39 of the video receiver 30 of the video wireless transmission / reception system 2 of the present embodiment. The receiving side control circuit section 39 is constituted by, for example, a microcomputer. The operation of the receiving-side control circuit unit 39 when the receiving-side control circuit unit 39 is constituted by a microcomputer will be described below with reference to FIG.

In step S1, it is checked whether or not a remote control signal has been input from the remote control light receiving circuit section 41. When a remote control signal is input, the process proceeds to step S2.

In step S2, the discrimination code of the remote control signal is "01" = video signal generator 11 (A
It is checked if the discrimination code is “01” or not, and if the discrimination code is “01”, the process proceeds to step S3. If the discrimination code is not “01”, the process proceeds to step S4.

In step S3, the memory circuit unit 45
To video input terminal 14a (video input 1) to which video signal generator 11 (company A video playback device) is connected
Is read. Then, "video input 1 selection data signal"
OS for controlling the data signal generation circuit section 38 to generate the video signal 1 and causing the display circuit section 34 to display “video input 1 = company A video playback device” on-screen.
D data is displayed on an on-screen display (OSD) circuit section 43
Output to

In step S4, the discrimination code of the remote control signal is "10" = video signal generator 12 (B
It is checked if the discrimination code is “10” or not, and if the discrimination code is “10”, the process proceeds to step S5, and if not, the process proceeds to step S6.

In step S5, the memory circuit unit 45
To a video input terminal 14b (video input 2) to which a video signal generator 12 (company B video playback device) is connected
Is read. Then, "video input 2 selection data signal"
OS for controlling the data signal generation circuit section 38 to generate the video signal 2 and causing the display circuit section 34 to display "video input 2 = video playback device of company B" on-screen.
D data is displayed on an on-screen display (OSD) circuit section 43
Output to

In step S6, the discrimination code of the remote control signal is "11" = video signal generator 13 (C
It is checked whether or not this is a video playback device (company video playback device), and if the determination code is “11”, the process proceeds to step S7.

In step S7, the memory circuit unit 45
To a video input terminal 14c (video input 3) to which a video signal generator 13 (Company C video playback device) is connected
Is read. Then, "video input 3 selection data signal"
OS for controlling the data signal generating circuit section 38 to generate the video signal 3 and causing the display circuit section 34 to display "video input 3 = video playback device of company C" on-screen.
D data is displayed on an on-screen display (OSD) circuit section 43
Output to

As described above, the receiving side control circuit 39
Video signal generator 1 not shown with remote control light receiving unit 41
When remote control signals from the infrared remote control transmitters 1, 12, and 13 are received, the operated video signal generator is determined by the determining unit 44, and the operated video signal generator is connected from the memory circuit unit 45. Data signal generating circuit section 3 so as to read out the video input terminal connected thereto and generate a selection data signal for selecting the video input terminal.
8 is controlled.

The on-screen display (OSD) circuit section (display means) 43 displays a video signal generator connected to each of the plurality of video input terminals stored in the memory circuit section 45.

[Third Embodiment] FIG. 8 is a block circuit diagram showing a schematic configuration of a video radio transmission / reception system according to a third embodiment of the present invention, and FIG. It is a flowchart figure explaining operation | movement of the receiving side control circuit part of the video receiver of the video wireless transmission / reception system concerning 3rd Embodiment. Hereinafter, a third embodiment of the present invention will be described with reference to FIGS.

FIG. 8 is a block circuit diagram showing a schematic configuration of the video wireless transmission / reception system 3 of the present embodiment. The video wireless transmission / reception system 3 of the present embodiment is different from the video wireless transmission / reception system 2 of FIG.
, A mode setting switch (mode setting means) 48 connected to the receiving side control circuit section 39 has been added;
In place of the infrared remote control transmitter 42, a first infrared remote control transmitter (first input means) 46 and a second infrared remote control transmitter (second input means) 47 are provided. Only the operation of the control circuit section 39 is different. Therefore, the same parts as those of the video wireless transmission / reception system 2 of FIG.
The points different from the above will be described below.

In the video receiver 30, a mode setting switch (mode setting means) 48 is for setting and canceling a video input setting mode. For example, the receiving side control circuit section 39 includes a mode setting switch 48. Is on, the video input setting mode is set, and when the mode setting switch 48 is off, it is assumed that the video input setting mode is released.

When the first infrared remote controller transmitter (first input means) 46 is set to the video input setting mode, the plurality of video input terminals 14a, 14b, 1
4c for selecting and inputting one of them.
For example, it is an infrared remote control transmitter for operating the display circuit unit 34 and the audio circuit unit 33.

A second infrared remote controller transmitter (second input means) 47 is used to input a video signal generator connected to the selected video input terminal when the video input setting mode is set. And, for example,
This is an infrared remote control transmitter for operating the video signal generators 11, 12, and 13.

FIG. 9 is a flowchart for explaining the operation of the receiving side control circuit 39 of the video receiver 30 of the video radio transmission / reception system 3 of the present embodiment. The receiving side control circuit section 39 is constituted by, for example, a microcomputer. The operation of the receiving-side control circuit section 39 when the receiving-side control circuit section 39 is constituted by a microcomputer will be described below with reference to FIG.

In step S1, it is checked whether or not the video input setting mode has been set. If the video input setting mode has been set, the process proceeds to step S2.

In step S2, it is checked whether or not the remote control signal of the first infrared remote control transmitter 46 has been input from the remote control light receiving circuit section 41. When the remote control signal has been input, the remote control signal is set to "video input It is checked whether it is a "selection data signal", and if it is a "video input selection data signal", the process proceeds to step S3.

In step S3, "video input 1"
Check whether or not was selected. If “video input 1” is selected, an OS for causing the display circuit section 34 to display “video input 1 = (blank)” on-screen is displayed.
D data is displayed on an on-screen display (OSD) circuit section 43
And the internal register is set to N = 1, and then the step S
Move to 6. If "video input 1" has not been selected, the process proceeds to step S4.

In step S4, "video input 2"
Check whether or not was selected. If “video input 2” is selected, an OS for causing the display circuit section 34 to display “video input 2 = (blank)” on-screen
D data is displayed on an on-screen display (OSD) circuit section 43
After setting the internal register to N = 2,
Move to 6. If “video input 2” has not been selected, the process proceeds to step S5.

In step S5, "video input 3"
Check whether or not was selected. If “video input 3” is selected, an OS for causing the display circuit unit 34 to display “video input 3 = (blank)” on-screen
D data is displayed on an on-screen display (OSD) circuit section 43
And after setting the internal register to N = 3,
Move to 6.

In step S6, it is checked whether or not a remote control signal of the second infrared remote control transmitter 47 has been input from the remote control light receiving circuit section 41, and if a remote control signal has been input, the flow proceeds to step S7.

In step S7, the discrimination code of the remote control signal is "01" = video signal generator 11 (A
It is checked whether or not the discrimination code is “company video playback device”. If the discrimination code is “01”, the process proceeds to step S8. If the discrimination code is not “01”, the process proceeds to step S9.

In step S 8, OSD data for causing the display circuit section 34 to perform on-screen display of “video input N = video player of company A” is output to the on-screen display (OSD) circuit section 43. Further, the memory circuit 45 stores "video input N = video player of company A". Here, N of the "video input N" is the value of the internal register set in steps S3 to S5. Then, the process proceeds to step S13.

In step S9, the discrimination code of the remote control signal is "10" = video signal generator 12 (B
It is checked whether or not the discrimination code is “company video reproducing device”. If the discrimination code is “10”, the process proceeds to step S10, and if not, the process proceeds to step S11.

In step S10, the display circuit section 34
And OSD data for on-screen display of “video input N = B company video playback device” to the on-screen display (OSD) circuit section 43. Further, the memory circuit 45 stores “video input N = video player of B company”. Here, N of the "video input N" is the value of the internal register set in steps S3 to S5. Then, the process proceeds to step S13.

In step S11, the discrimination code of the remote control signal is "11" = video signal generator 13
It is checked whether it is (Company C video playback device), and if the discrimination code is “11”, the process proceeds to step S12.

In step S12, the display circuit section 34
The OSD data for on-screen display of “video input N = C video player” is output to the on-screen display (OSD) circuit section 43. Further, the memory circuit 45 stores "video input N = C video player". Here, N of the "video input N" is the value of the internal register set in steps S3 to S5. Then, the process proceeds to step S13.

In step S13, it is checked whether or not the video input setting mode has been released. If the video input setting mode has been released, the above operation is terminated.

As described above, when the video input setting mode is set, the receiving side control circuit section 39 transmits the video input signal inputted by the first infrared remote control transmitter (first input means) 46. The terminal and the video signal generator input by the second infrared remote controller transmitter (second input means) 47 are stored in the memory circuit unit 45 in pairs.

As described above, in the first to third embodiments, the video signal generators 11, 1 of the video transmitter 10 are used.
2 and 13 may be replaced with video playback devices 21, 22 and 23. Further, the audio circuit section 33 and the display circuit section 34 of the video receiver 30 may be replaced with a television 49. By replacing as described above, the video and audio of the video playback device can be viewed on a television set at a remote location.

The video signal generators 11, 12, 1
Although the case of three (3) is described as an example, the number is not limited to three, but may be two or more.

[0101]

As described above, according to the present invention, there are provided a plurality of different video signal generators, a video input switching circuit for selecting one of the plurality of video signal generators, and the selected video signal generator. A video transmission circuit for converting a video signal from the generator into a high-frequency video signal and transmitting the video signal;
A video transmitter including a transmission-side power supply circuit unit that supplies power to each of the circuit units, a video reception circuit unit that receives the high-frequency video signal and converts the high-frequency video signal into a video signal and an audio signal,
A video circuit comprising a display circuit unit for displaying the video signal as an image, an audio circuit unit for converting the audio signal into audio, and a receiving power supply circuit unit for supplying power to each of the circuit units. In the wireless transmission / reception system, the video receiver includes a data signal generation circuit for generating a data signal for controlling the operation of the video wireless transmission / reception system, and a data transmission for converting the data signal into a high-frequency data signal and transmitting the high-frequency data signal. A circuit unit, an operation unit for operating the display circuit unit and the audio circuit unit, and a receiving side control circuit unit for controlling the data signal generation circuit unit based on the operation of the operation unit, the video transmitter, A data receiving circuit unit for receiving the high-frequency data signal and converting it to an original data signal; and a transmission unit for controlling the video input switching circuit unit based on the data signal. And a receiving-side control circuit unit, when a video input selection operation is performed by the operation unit, controls the data signal generation circuit unit to generate a selected data signal, and The side control circuit controls the video input switching circuit to select one of the video signal generators based on the selection data signal.

Therefore, since the video transmitter and the video receiver are installed at remote locations, by switching the video input switching circuit section of the video transmitter, a plurality of video signal generators are provided. Each time the user watching the video receiver selects one and switches the video input switching circuit unit,
The inconvenience of having to move to the place where the video transmitter is installed and switch the video input switching circuit of the video transmitter can be solved.

Also, in the present invention, the video transmitter includes a first switch circuit unit for individually turning on and off a power supply from the transmission side power supply circuit unit to the plurality of video signal generators, When a video input selecting operation is performed by the first switch circuit, the first switch circuit is configured to turn on the power supply from the transmission power supply circuit unit only to the selected video signal generator. This is characterized by controlling the section.

Therefore, from the transmission side power supply circuit section,
By turning off the power supply to the video signal generator that the user is not watching, wasteful power consumption of the transmission-side power supply circuit can be eliminated. For example, when the transmission-side power supply circuit section is constituted by a battery or the like, the problem that the battery is wasted and the battery life is shortened can be solved.

Further, according to the present invention, the video receiver includes a second switch circuit for turning on / off power supply from the power supply circuit on the receiving side to the display circuit and the audio circuit. When the power is turned off,
The reception-side control circuit unit controls the data signal generation circuit unit to generate an off data signal,
The second switch circuit is controlled so as to turn off the power supply from the reception power supply to the display circuit and the audio circuit, and the transmission control circuit controls the transmission based on the off data signal. The first switch circuit section is controlled so that power supply from the side power supply circuit section to all of the plurality of video signal generators is turned off.

Therefore, when the user watching the video receiver finishes viewing, the user moves to the place where the video transmitter is installed and turns on the power supply of the video signal generator of the video transmitter. The inconvenience of having to turn off can be eliminated.

Further, since the user watching the video receiver does not know the operation state of the video signal generator from the video receiver side, the user ends the viewing,
If the user forgets to turn off the power of the video signal generator, the video signal generator operates even though the user is not watching the video signal. Power consumption can be eliminated. For example, when the transmission-side power supply circuit section is constituted by a battery or the like, the problem that the battery is wasted and the battery life is shortened can be solved.

Further, in the present invention, the video input switching circuit section has a plurality of video input terminals for connecting the plurality of video signal generators, and the operation means includes an infrared remote control transmitter, A remote control light receiving circuit for converting an infrared remote control signal from an infrared remote control transmitter into an electric signal, wherein the video receiver has a memory circuit storing a video signal generator connected to each of the plurality of video input terminals. And a determination means for determining a video signal generation device from a remote control signal of an infrared remote control transmitter of the video signal generation device. When receiving a remote control signal of a remote control transmitter, the video signal generator operated by the determination means is determined, A video input terminal to which the operated video signal generator is connected is read from a memory circuit unit, and the data signal generation circuit unit is controlled so as to generate a selection data signal for selecting the video input terminal. It is assumed that.

Therefore, a user who is watching the video receiver cannot connect the video signal generator to the video input switching circuit because the video signal generator is installed at a remote place. Even if the state cannot be confirmed from the video receiver side, when the infrared remote control transmitter of the video signal generator is operated, the video input switching circuit section operates the video signal generator of the operated infrared remote control transmitter. , It is possible to improve the switching operability when selecting one of the plurality of video signal generators of the video transmitter.

Further, the user watching the video receiver cannot confirm the connection state between the plurality of video signal generators and the video input switching circuit from the video receiver side. When the connection state has changed, the problem of erroneously switching the video input switching circuit unit without noticing it can be solved.

Further, according to the present invention, there is provided the video receiver, wherein the mode setting means for setting and canceling the video input setting mode;
A first input unit for selecting and inputting one of the plurality of video input terminals; and a video signal generator connected to the selected video input terminal when the video input setting mode is set. And a second input means for inputting, wherein the receiving-side control circuit section comprises: the video input terminal input by the first input means; and the video signal generator input by the second input means. And
Each pair is stored in the memory circuit section.

Therefore, the user watching the video receiver can change the connection state between the plurality of video signal generators and the video input switching circuit section.
The memory contents of the memory circuit unit can be rewritten.

Further, according to the present invention, the first input means includes:
A first infrared remote control transmitter for operating the display circuit unit and the audio circuit unit, wherein the second input unit includes:
It is a second infrared remote control transmitter for operating the video signal generator.

Therefore, a user watching the video receiver can change the connection state between the plurality of video signal generators and the video input switching circuit section even if the connection state changes.
The memory contents of the memory circuit unit can be easily rewritten without requiring a special device.

Further, the present invention is characterized in that the video receiver includes display means for displaying a video signal generator connected to each of the plurality of video input terminals stored in the memory circuit section. It is assumed that.

Therefore, the user who is watching the video receiver, because the plurality of video signal generators is installed at a distant place, can use the plurality of video signal generators and the video input switching circuit. The connection status with the
The inconvenience that cannot be confirmed from the video receiver side can be solved.

Further, the present invention is characterized in that the video signal generating device of the video transmitter is a video reproducing device, and the display circuit unit and the audio circuit unit of the video receiver are televisions. It is.

Therefore, since the video transmitter and the video receiver are installed at remote locations, by switching the video input switching circuit section of the video transmitter, one of the plurality of video reproducing apparatuses can be switched. Choose one
Each time the user watching the television switches the video input switching circuit section, the user moves to the place where the video transmitter is installed and moves to the video input switching circuit section of the video transmitter. The inconvenience of having to switch can be eliminated.

Further, by turning off the power supply from the transmission-side power supply circuit section to the video reproducing apparatus that the user is not watching, wasteful power consumption of the transmission-side power supply circuit section can be eliminated. For example, when the transmission-side power supply circuit section is constituted by a battery or the like, the problem that the battery is wasted and the battery life is shortened can be solved.

Further, when the user watching the television has finished watching, the user moves to the place where the video transmitter is installed and turns off the power of the video reproducing device of the video transmitter. The inconvenience that must be done can be eliminated.

Further, since the user watching the television does not know the operation state of the video reproduction device from the television side, the user ends the viewing and turns off the power of the video reproduction device. If the user forgets, the video playback apparatus is operating even though the user is not watching, and wasteful power consumption of the transmission-side power supply circuit can be eliminated. For example, when the transmission-side power supply circuit unit is configured by a battery or the like, it is possible to solve the problem that the battery is wasted and the battery life is shortened.Also, a user who is watching the television, Since the video playback device is installed at a remote location, even if the connection state between the video playback device and the video input switching circuit unit cannot be confirmed from the television side, the video playback device cannot receive infrared light. When you operate the remote control transmitter,
Since the video input switching circuit switches to the video playback device of the operated infrared remote control transmitter, switching operability when selecting one of the video playback devices of the video transmitter can be improved. .

Further, the user watching the television cannot confirm the connection state between the plurality of video playback devices and the video input switching circuit section from the television side. In the case of a change, the problem of erroneously switching the video input switching circuit unit without noticing it can be solved.

[Brief description of the drawings]

FIG. 1 is a block circuit diagram showing a schematic configuration of a video wireless transmission / reception system according to a first embodiment of the present invention.

FIG. 2 is a flowchart illustrating an operation of a receiving side control circuit unit of the video receiver of the video wireless transmission / reception system according to the first embodiment of the present invention.

FIG. 3 is a flowchart illustrating an operation of a transmission-side control circuit unit of the video transmitter in the video wireless transmission / reception system according to the first embodiment of the present invention.

FIG. 4 is a block circuit diagram showing a schematic configuration of a video wireless transmission / reception system according to a second embodiment of the present invention.

FIG. 5 is a diagram illustrating a state of memory contents of a memory circuit unit of a video receiver of a video wireless transmission / reception system according to a second embodiment of the present invention.

FIG. 6 is a diagram illustrating a state of a remote control signal of a remote control transmitter of a video signal generation device of a video wireless transmission / reception system according to a second embodiment of the present invention.

FIG. 7 is a flowchart illustrating an operation of a receiving side control circuit unit of a video receiver of a video wireless transmission / reception system according to a second embodiment of the present invention.

FIG. 8 is a block circuit diagram showing a schematic configuration of a video wireless transmission / reception system according to a third embodiment of the present invention.

FIG. 9 is a flowchart illustrating an operation of a receiving-side control circuit of a video receiver in a video wireless transmission / reception system according to a third embodiment of the present invention.

FIG. 10 is a block circuit diagram showing a schematic configuration of a conventional video wireless transmission / reception system.

[Explanation of symbols]

1, 2, 3 Video wireless transmission / reception system 10 Video transmitter 11, 12, 13 Video signal generator 14 Video input switching circuit section 14a, 14b, 14c Video input terminal 15 Video transmission circuit section 16 Antenna 17 Transmission side power supply circuit section 18 Data receiving circuit section 19 Transmission-side control circuit section 20 First switch circuit section 20a, 20b, 20c Switch 21, 22, 23 Video reproducing device 30 Video receiver 31 Antenna 32 Video receiving circuit section 33 Audio circuit section 34 Display circuit section 35 Receiving-side power supply circuit section 36 Second switch circuit section 37 Data transmitting circuit section 38 Data signal generating circuit section 39 Receiving-side control circuit section 40 Operating means 41 Remote control light receiving circuit section (operating means) 42 Infrared remote control transmitter (operating means) ) 43 On-screen display (OSD) circuit (display Stage) 44 discriminating means 45 memory circuit section 46 first infrared remote control transmitter (first input means) 47 second infrared remote control transmitter (second input means) 48 mode setting switch (mode setting means) 49 television John

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) H04N 5/63 H04N 5/63 Z 5/765 5/91 LF term (Reference) 5C025 AA03 AA10 AA11 BA27 BA30 DA10 5C026 EA07 5C053 FA30 HA40 KA08 KA24 KA30 LA06 5C056 AA01 AA05 BA01 BA08 BA10 CA06

Claims (8)

[Claims] A plurality of video signal generators, a video input switching circuit for selecting one of the plurality of video signal generators, and a video signal from the selected video signal generator. A video transmission circuit unit that converts the signal into a signal and transmits the signal, and a video transmitter that includes a transmission-side power supply circuit unit that supplies power to each of the circuit units. A video receiving circuit unit for converting, a display circuit unit for displaying the video signal as an image, an audio circuit unit for converting the audio signal into audio, and a receiving-side power supply circuit unit for supplying power to each of the circuit units. A video signal transmission / reception system comprising: a video signal transmission / reception system configured to generate a data signal for controlling an operation of the video radio transmission / reception system. A generation circuit unit, a data transmission circuit unit that converts the data signal into a high-frequency data signal and transmits the data signal; an operation unit that operates the display circuit unit and the audio circuit unit; A receiving control circuit for controlling a circuit section, wherein the video transmitter receives the high-frequency data signal and converts the high-frequency data signal into an original data signal; and the video input based on the data signal. A transmission-side control circuit unit that controls a switching circuit unit, wherein, when a video input selection operation is performed by the operation unit, the reception-side control circuit unit generates the selected data signal. And the transmission-side control circuit unit controls the video input switching circuit so as to select one of the plurality of video signal generators based on the selection data signal. A video wireless transmission / reception system for controlling a road section. 2. The video transmitter according to claim 1, further comprising a first switch circuit for individually turning on and off a power supply from the transmission-side power supply circuit to the plurality of video signal generators. When an operation is performed, the transmission-side control circuit controls the first switch circuit to turn on power supply from the transmission-side power supply only to the selected video signal generator. The video wireless transmission / reception system according to claim 1, wherein: 3. The video receiver further comprises a second switch circuit section for turning on / off a power supply from the receiving side power supply circuit section to the display circuit section and the audio circuit section, and performing a power-off operation by the operation means. When the operation is performed, the reception-side control circuit controls the data signal generation circuit to generate an off-data signal, and supplies power from the reception-side power supply to the display circuit and the audio circuit. Controlling the second switch circuit unit to turn off the supply;
The transmission-side control circuit unit controls the first switch circuit unit to turn off all power supply from the transmission-side power supply circuit unit to the plurality of video signal generators based on the off data signal. The video wireless transmission / reception system according to claim 1 or 2, wherein 4. The video input switching circuit section has a plurality of video input terminals for connecting the plurality of video signal generators, and the operation means includes an infrared remote control transmitter and the infrared remote control transmitter A video signal generator connected to each of the plurality of video input terminals, wherein the video receiver includes a memory circuit unit in which a video signal generator is stored. Discriminating means for discriminating the video signal generator from the remote control signal of the infrared remote controller transmitter of the video signal generator. When a remote control signal is received, the video signal generator operated by the determination means is determined, and the The video signal input terminal to which the operated video signal generator is connected is read, and the data signal generation circuit is controlled to generate a selection data signal for selecting the video input terminal. 4. The video wireless transmission / reception system according to any one of 1 to 3. 5. The video receiver, comprising: a mode setting means for setting and canceling a video input setting mode; and selecting one of the plurality of video input terminals when the video input setting mode is set. A first input means for inputting the video data, and when the video input setting mode is set,
And a second input means for inputting a video signal generator connected to the selected video input terminal, wherein the receiving side control circuit section includes the video input terminal input by the first input means, 5. The video radio transmission / reception system according to claim 4, wherein the video signal generator input by the second input unit is stored in the memory circuit unit in a pair. 6. The first input means is a first infrared remote control transmitter for operating the display circuit section and the audio circuit section, and the second input means is configured to control the video signal generator. 6. The video radio transmission / reception system according to claim 5, wherein the video radio transmission / reception system is a second infrared remote control transmitter for operation. 7. The video receiver further comprises display means for displaying a video signal generator connected to each of the plurality of video input terminals stored in the memory circuit unit. 7. The video wireless transmission / reception system according to any one of 4 to 6. 8. The video signal generating device of the video transmitter is a video reproducing device, and the display circuit and the audio circuit of the video receiver are televisions. The video wireless transmission / reception system according to any one of the above items.