JP2994313B2 - Orbital moving object imaging signal transmission system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for transmitting an image signal of an orbiting vehicle, and more particularly, to an image signal transmission of an orbiting vehicle for transmitting video, audio and data from a traveling device equipped with an imaging device moving on an orbit. About the system.

[0002]

2. Description of the Related Art A conventional example of this kind will be described with reference to the drawings.

FIG. 4 is a schematic explanatory diagram showing a system configuration of a conventional example, and FIG. 5 is a block diagram showing a device configuration of the conventional example shown in FIG.

[0004] As shown in FIG. 4, the video camera system for a tracked vehicle is a vehicle body 102 of a model train 102.
a, a transmission system 103 mounted on 102b and outputting an optical signal
And a receiving system 104 that receives the optical signal output from the transmitting system 103 and converts it into a video signal. Reference numeral 101 denotes a rail as a track. The power train is disposed at an appropriate position, not shown, and the model train 102 is driven by the power train.

As shown in FIG. 5, the transmission system 103 mainly includes a television camera 105, an FM modulation circuit 106, an amplifier 107, a light emitting diode 108, a lens 117, and the like. The television camera 105 is miniaturized so that it can be mounted on the 9 mm gauge vehicle body 102a. The television camera 105 is mounted on the vehicle body 102a in a fixed state, and the other circuit blocks are mounted on the vehicle body 102b. The vehicle body 102b is configured not to be affected by external noise.

Conventionally, when transmitting video and audio from a traveling device equipped with an imaging device moving on an orbit including a curved portion by a screw, a low output GHz band radio with a transmission band of about 10 MHz is used. In general, an antenna having a high directivity must be used, so that transmission cannot be performed unless the traveling apparatus travels straight.

Further, there is a problem that it is not possible to emit a radio wave at a very strong level because an increase in output may adversely affect peripheral devices.

[0008] In addition, the directivity must be strengthened even in a transmission system using an optical signal, so that transmission on a curved orbit is impossible, and long-distance transmission is difficult even when video and audio are transmitted using a metal cable. Met.

[0009]

The conventional imaging signal transmission system for an orbital moving body has the following problems.

[0010] The first problem is that a radio system with a transmission band of about 10 MHz and a small output in the GHz band or a system using a transmission method of transmitting in the air using an optical signal can be used only in a traveling device that travels straight.

The reason is that the traveling device travels on a curved track because the above-mentioned radio uses an antenna having high directivity, and the transmission system for transmitting in the air using optical signals also has high directivity. As a result, the beam is deviated from the wireless device facing the device.

In a system for transmitting video and audio via the second metal cable, the traveling distance of the traveling device cannot be increased, and the traveling speed cannot be increased.

[0013] The reason is that it is difficult to unwind the cable.

[0014]

SUMMARY OF THE INVENTION An imaging signal transmission system for an orbiting vehicle according to the present invention is provided with an imaging device mounted on a traveling vehicle traveling on a track along a curved track of a compound stadium and this imaging device. A wireless transmitter that modulates a video signal from the wireless signal into a wireless signal and transmits the signal via an omni antenna, and the wireless signal from the wireless transmitter fixedly installed on an extension of a cut line near a plurality of inflection points of the orbit. A plurality of wireless receivers for receiving signals and transmitting the signals to a predetermined display device via a cable, respectively, wherein the plurality of wireless receivers respectively receive the wireless signals via a Cassegrain antenna.

[0015] The imaging signal transmission system for a track moving object according to the present invention is a driving apparatus that runs on a curved track of a complex stadium.
A band simple image transmitting device, and a Cassegrain antenna which is fixedly installed near a plurality of inflection points of the traveling device trajectory and substantially on an extension of a section line of the traveling device trajectory and transmits a wireless image signal from the 50 GHz band simple image transmitting device to a Cassegrain antenna And a baseband image signal received from a plurality of 50 GHz band simple image receiving apparatuses installed in an image display facility and transmitted from each of the plurality of 50 GHz band simple image receiving apparatuses via a transmission cable and displayed. An image receiving apparatus, wherein the image receiving apparatus detects the strongest image signal among the image signals received via the transmission cable, and receives the image signal of the transmission cable transmitting the strongest image signal. It has a signal receiving section and a large screen display section for displaying an image signal from the signal receiving section on a large screen.

[0016]

Next, the present invention will be described with reference to the drawings.

FIG. 1 is a schematic system configuration diagram showing an embodiment of the present invention, and FIG.
FIG. 3 is a block diagram illustrating an example of a band image transmitting apparatus, and FIG. 3 is a block diagram illustrating an example of a 50 GHz band simple image receiving apparatus according to the present embodiment.

In FIG. 1, an image signal transmission system for a track moving object according to the present embodiment is a traveling device traveling on a track 6 along a curved track of a compound stadium 7 for soccer or athletics. 50G installed on 16
A simple image transmitting apparatus 1 in the Hz band and a 50 GHz band simple image fixedly installed on a substantially extended line of the running device track 6 near the inflection points A, B, C, D, and E of the running device track 6. A plurality of 5 receiving wireless image signals from the transmitting device 1
Baseband images from the 0 GHz band simple image receiving devices 2-1 to 2-5 and the 50 GHz band simple image receiving devices 2-1 to 2-5 installed in the image display facility 5 via the transmission cable 3 respectively. And an image receiving device 4 for receiving and displaying the signal. The image receiving device 4 detects the strongest image signal among the image signals received via the transmission cable 3 and transmits the strongest image signal. It has a signal receiving section 41 for receiving the image signal of the cable 3 and a large screen display section 42 for displaying the image signal from the signal receiving section 41 on a large screen.

Referring to FIG.
The GHz-band simple image transmission device 1 includes an imaging device 11 for imaging an athlete or the like in the complex stadium 7, a baseband unit (BB) 12 for converting a signal captured by the imaging device 11 into a baseband TV signal, and , TV signal from BB12
A modulation unit (MD) 14 that modulates the signal in the GHz band and a radio transmission unit (RFT) 15 that transmits the signal modulated by the MD 14 in the 50 GHz band via the omni-antenna 13 are provided.

Referring to FIG. 3, reference numeral 50 in the present embodiment
The GHz band simple image receiving device 2 (representing 2-1 to 2-5) includes a wireless receiving unit (RFR) 22 that receives a wireless image signal from the 50 GHz simple image transmitting device 1 via the Cassegrain antenna 21; It has a demodulation unit (MD) 23 for demodulating the received image signal, and a baseband unit (BB) 24 for converting the demodulated image signal into a baseband TV signal and sending it to the transmission cable 3.

Next, the operation of this embodiment will be described with reference to FIG.
This will be described with reference to FIG.

The imaging signal transmission system for a track moving object according to the present embodiment is a large display for a TV relay or a spectator service in a complex stadium, a racetrack, a bicycle racetrack, a boat racetrack, an auto race track or the like for soccer or athletics. Used when servicing equipment.

Referring to FIG. 1, in the present embodiment,
In order for the imaging device 11 on the traveling device 16 to follow a subject (athlete or the like) in the complex stadium 7, the traveling device 16 moves from the point A to the points B, C,. Travel to.

First, from the point A to the point B, the image pickup signal is modulated by the MD 14 by the image pickup device 11 and the radio image signal of the 50 GHz band is radiated by the RFT 15 via the omni antenna 13 and the 50 GHz The RFR 22 of the simple band image receiving apparatus 2-1 receives the signal via the Cassegrain antenna 21, demodulates the signal with the MD 23, converts the signal into the baseband signal with the BB 24, and transmits the signal via the transmission cable 3.
It is transmitted to the image receiving device 4.

Next, from the point B to the point C, 50 GH
The wireless image signal from the omni antenna 13 of the z-band simple image transmitting device 1 is mainly received by the Cassegrain antenna 21 of the 50 GHz band simple image receiving device 2-2 at the point C and transmitted to the image receiving device 4 via the transmission cable 3. Sent.

Similarly, the Cassegrain antennas 21 of the 50 GHz simple image receiving apparatus 2 at the point D between the points C and D, and between the points D and E at the point E are 5 points each.
A wireless image signal is received from the omni antenna 13 of the 0 GHz band simple image transmitting apparatus 1 and transmitted through the transmission cable 3.
Is transmitted to the image receiving device 4 via the. Image receiving device 4
The signal receiving section 41 detects a signal from the transmission cable 3 having the highest signal level among the image signals received from the transmission cable 3 and displays the signal on the large screen display section 42 based on the detected signal.

As described above, in the present embodiment, the 50 GHz band simple image receivers 2-1 to 2-5 fixed on the inflection points A, B, C, D, and E of the traveling device track 6 are extended. Is fixedly installed, and the wireless image signal from the omni antenna 13 of the 50 GHz band simple image transmission device 1 can be reliably received. Therefore, a clear image is always displayed continuously on the large screen display unit 42. .

[0028]

As described above, the present invention provides an imaging device mounted on a traveling vehicle traveling on a track along a curved track of a multi-sports stadium, and converts a video signal from the imaging device into a radio signal. A radio transmitter that modulates and transmits via an omni antenna, and a radio transmitter that is fixedly installed on an extension of a cut line near a plurality of inflection points of the orbit and receives a radio signal from the radio transmitter and is predetermined. By providing a plurality of wireless receivers for transmitting to the display device via cables, the direction of the antenna of the wireless transmitter can be changed even when the traveling vehicle changes direction at an inflection point of a curved track. There is an effect that the image pickup signal can be transmitted without any change.

The reason is that the radio transmitter transmits an image signal via the omni antenna, so that the horizontal
This is because a radio wave emission of 60 ° is obtained and can be received by a plurality of wireless receivers.

[Brief description of the drawings]

FIG. 1 is a schematic system configuration diagram showing an embodiment of the present invention.

FIG. 2 is a block diagram illustrating an example of a 50 GHz band simple image transmission device according to the present embodiment.

FIG. 3 is a block diagram illustrating an example of a simple image receiving device in a 50 GHz band according to the present embodiment.

FIG. 4 is a schematic explanatory diagram showing a system configuration of a conventional example.

FIG. 5 is a block diagram showing a device configuration of the conventional example shown in FIG.

[Explanation of symbols]

 Reference Signs List 1 50 GHz band simple image transmitting device 2, 2-1 to 2-5 50 GHz band simple image receiving device 3 Transmission cable 4 Image receiving device 5 Image display facility 6 Running device track 7 Complex stadium 11 Imaging device 12 Baseband unit ( BB) 13 Omni antenna 14 Demodulation unit (MD) 15 Radio transmission unit (RFT) 16 Traveling device 21 Cassegrain antenna 22 Radio reception unit (RFR) 23 Modulation unit (MD) 24 Baseband unit (BB)

Claims (4)

(57) [Claims] 1. An imaging device mounted on a traveling vehicle running on a track along a curved track of a multi-sports stadium, and a video signal from the imaging device is modulated into a radio signal and transmitted via an omni antenna. A wireless transmitter, and a cable to a display device that is fixedly installed on an extension of a cut line near a plurality of inflection points of the trajectory and that receives the wireless signal from the wireless transmitter and is determined in advance. An imaging signal transmission system for an orbital moving object, comprising: a plurality of wireless receivers for transmitting the signals via a wireless link. 2. The system according to claim 1, wherein each of the plurality of wireless receivers receives the wireless signal via a Cassegrain antenna. 3. A traveling device along a curved track of a multi-story stadium.
A 0 GHz band simple image transmitting device, and a Cassegrain radio image signal from the 50 GHz band simple image transmitting device fixedly installed near a plurality of inflection points of the traveling device trajectory and substantially on an extension of a cut line of the traveling device trajectory. A plurality of 50 GHz band simple image receiving devices for receiving via an antenna, and a base band image signal received via a transmission cable from each of the plurality of 50 GHz band simple image receiving devices installed in an image display facility, and displayed. An imaging signal transmission system for an orbital moving object, comprising: 4. The image receiving apparatus according to claim 1, wherein the image receiving apparatus detects the strongest image signal among the image signals received via the transmission cable, and receives the image signal of the transmission cable transmitting the strongest image signal. The imaging signal transmission system for an orbital moving body according to claim 3, further comprising a unit and a large screen display unit that displays an image signal from the signal receiving unit on a large screen.