JP4499596B2 - Transmission and display method of delay profile information - Google Patents

Description

  The present invention relates to an FPU (Field Pick-up Unit) having a transmitting device that transmits a video signal, a receiving device that receives a transmitted signal with a receiving antenna, and a control device that remotely controls the receiving direction of the receiving antenna. The present invention relates to a method for transmitting delay profile information representing a mixed state of delayed waves in a remote control system, and a display method for supporting antenna direction adjustment.

  Conventionally, in broadcasting stations that broadcast video signals, video materials used in broadcast news programs and the like are taken by a television camera or the like, and the obtained video materials are transmitted from a relay vehicle or the like by microwaves. The transmitted radio wave is received by a receiving base station (a receiving device installed at a mountaintop with good visibility), and the broadcast material of the received radio wave is transmitted to the head office studio etc. via a dedicated TSL (Transmitter to Studio Link) line and recorded there. Or broadcast.

  Here, in the case of the conventional analog FPU remote control system, a meter for indicating the strength of the received electric field is displayed on the CRT of the personal computer which is the control device of the head office, for example, as the reception state of the receiving base station, and the operator However, it was a method of judging the quality by looking at the display.

  On the other hand, in the FPU remote control system of the digital signal reception system used for terrestrial digital broadcasting developed in recent years, it is not possible to accurately determine whether the reception state is good or not only with a meter indicating the strength of the reception electric field. As described above, with the digitization of the FPU receiving apparatus, it is necessary to transmit information for supporting direction adjustment such as delay profile data from the receiving base station in which the FPU and the rotating apparatus are installed to the head office (broadcasting station).

Therefore, conventionally, delay profile information or the like is replaced with an analog video signal, a dedicated video line or a video is encoded and transmitted via a network (for example, Patent Document 1), a signal signal point arrangement (constellation) state of a received signal Is displayed in a two-dimensional image (for example, Patent Document 2). There is also a transmission method (for example, Patent Document 3) in which delay profile information is converted into a digital signal and then transmitted to the head office (broadcasting station).
JP 2002-094481 A JP 2004-214980 A JP 2004-357112 A

  In the conventional method described above, a video line is required exclusively for transmitting the delay profile information, and a device and a line for network connection between the base station and the head office are required.

  The present invention eliminates these drawbacks, enables the transmission of delay profile data, etc., using an analog modem, etc. that has been conventionally used as a control and monitoring line, and further by delay profile data transmitted to the head office side. The purpose is to support antenna direction adjustment.

  In order to achieve the above object, the present invention provides an FPU remote control system including a transmission device that transmits a video signal, a reception device that receives the transmitted signal, and a control device that remotely controls an antenna of the reception device. At least the delay profile information indicating the transmission state of the received radio wave is converted into a still image corresponding to the angle information of the antenna of the receiving device and transmitted to the control device.

Further, in response to a request from the control device, predetermined still image information and antenna angle information corresponding to the still image information are transmitted from the receiving device to the control device in a time division manner.
In addition, the angle information of the antenna corresponding to the transmitted still image is displayed in a list on the display device of the control device.

  Further, the control device adjusts the direction of the antenna of the receiving device to an angle at which the transmission device is in an optimum transmission state based on the angle information of the antenna corresponding to the still images displayed as a list on the display device of the control device.

  As described above, according to the present invention, by using a low-speed analog modem, delay profile information and the like can be transmitted, and still images such as delay profile information corresponding to the angle of the antenna rotating device are displayed in a list. It is possible to support the antenna direction adjustment operation.

  Hereinafter, one embodiment of the present invention, in particular, one embodiment of control and direction adjustment operation of a parabolic antenna rotating apparatus provided with an FPU receiver will be described with reference to FIGS. FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. FIG. 2 is a schematic diagram of a list display screen of still images such as delay profile information. The left side of each screen is a delay profile video and the right side is a constellation state. The two-dimensional image, the lower side is the horizontal angle and vertical angle of the rotating device. FIG. 3 is a flowchart of the control of the antenna rotation device and the direction adjustment operation.

  A transmission facility 1 such as a relay vehicle includes a transmission FPU 11. The reception base station 2 includes a parabolic antenna rotation device 21, a digital reception FPU 22, a delay profile adapter 24 that creates and transmits delay profile information, and the like, and includes a controlled monitoring processing unit 23 that controls and monitors them. The head office equipment 3 includes a control monitoring processing unit 31, a display unit 32, and an operation unit 33.

  When the parabolic antenna rotating device 21 of the receiving base station 2 is pointed in the direction of the transmitting facility 1 that can move freely, the operation unit is checked while checking the current angle of the parabolic antenna rotating device 21 on the display unit 33 of the head office side facility 3. The horizontal angle and the vertical angle are controlled from 33 (step 100).

  The controlled monitoring processing unit 23 of the receiving base station 2 controls the antenna rotating device 21 based on the control signal from the head office side equipment 3 (Step 101), and changes the angle of the antenna by a predetermined angle while changing the angle of the digital receiving FPU 22 Are sequentially input to the delay profile adapter 24 (step 102).

The delay profile adapter 24 extracts delay profile information as shown in Patent Documents 1 and 3 from input received signal data and converts it into a video signal (step 103).
Further, the controlled monitoring processing unit 23 captures and stores a still image of the corresponding delay profile information converted into a video signal from the delay profile adapter 24 in a time division manner in conjunction with the angle information from the antenna rotating device 21 ( Step 104).

  After completion of a series of direction adjustment operations, a representative still image in an angle range of an arbitrary rotation device 21 designated from the head office side equipment 3 among the still image information taken in time division is transmitted to the head office side equipment 3 ( Step 105). For example, as shown in the upper part of FIG. 2, still image information for every 0.1 degree up to a vertical angle V: 2.0 degrees and a horizontal angle H: 235.0, 235.1,. Among them, only a representative still image (horizontal angles H: 235.0, H: 236.0, 237.0,..., Shown in the lower part of FIG. 2) is transmitted in units of 1 degree.

  The head office equipment 3 displays a list of transmitted still image information (lower part of FIG. 2), confirms each delay profile information, etc., and all still image information in an angle range with a good reception state (upper part of FIG. 2). Is again requested to the controlled monitoring processor 23 of the receiving base station 2 to transmit detailed still image information (step 106).

  A list of detailed still image information of the retransmitted angle range with a good reception state is displayed (upper part of FIG. 2), each delay profile information etc. is confirmed, the angle of the optimum transmission state is determined, and the optimum transmission state is determined. The antenna rotating device 21 is controlled so as to have an angle (step 107).

  Here, in the present invention, first, among the still image information such as delay profile information captured in time division, for example, only a representative still image for each unit is transmitted to the head office side equipment. In addition, it is possible to transmit delay profile information and the like using a low-speed analog modem without requiring a device and a line for network connection between the base station and the head office.

  In addition, a list of detailed still image information in the angle range with good reception conditions is displayed, and the antenna angle in the optimum transmission state can be determined from each delay profile information, etc., so the antenna can be easily rotated to the optimum transmission state angle. The device can be controlled.

The block diagram which shows the structure of one Example of this invention Schematic diagram of still image list display screen such as delay profile information of the present invention Flowchart of control and direction adjustment operation of antenna rotation device of the present invention

Explanation of symbols

  1: Transmission equipment, 2: Reception base station, 3: Head office equipment, 11: Transmission FPU, 21: Parabolic antenna rotating device, 22: Digital reception FPU, 23: Controlled monitoring processor, 24: Delay profile adapter, 31 : Control monitoring processing unit, 32: display unit, 33: operation unit.

Claims (3)

In an FPU remote control system having a transmission device that transmits a video signal, a reception device that receives the transmitted signal, and a control device that remotely controls the antenna of the reception device, at least the transmission state of the received radio wave that is received is represented. An FPU remote control system, wherein delay profile information is converted into a still image of a delay profile corresponding to antenna angle information of the receiving device, and the still image information of the delay profile is transmitted to the control device. 2. The method according to claim 1, wherein in response to a request from the control device , still image information of a predetermined delay profile is captured in a time division manner, and still image information of the predetermined delay profile is transmitted from the receiving device to the control device. FPU remote control system. 3. The FPU remote control system according to claim 1, wherein the still image information of the transmitted delay profile is displayed in a list on the display device of the control device.