JPS60114045A - Frequency selecting system - Google Patents

Abstract

PURPOSE:To attain operation and confirmation in a short time without any sophisticated knowledge by inputting position information of a realy car so as to assign efficiently a frequency independently of the limitation of the frequency and relay car/relay station. CONSTITUTION:The position information of a relay car and a relay station is inputting a display section 8 by means of a light pen 6. While one set of position of the relay car and the relay station each is indicated by the operation, the information is inputted to a central processing unit 9 via an input/output section 2. The central processing unit 9 forms a reception area of the relay station while storing it in a memory section 5, and the information of the reception area is displayed on the display section 8 via an input/output control section 7 of the position information. When all the position information is inputted, the central processing unit 9 assigns a frequency while comparing the frequency limit value with number of sets of relay cars and its information is displayed on the display section 8 via the input/output control section 7 of the position information. In this case, the decision of enable/disable state of each reception area is displayed clearly at the moment by displaying each reception area in color.

Description

[Detailed Description of the Invention] The present invention provides a frequency allocation method that can efficiently allocate frequencies limited to a predetermined number to transmitting and receiving devices, and more specifically, efficiently allocates frequencies to relay stations and relay vehicles. The present invention relates to a frequency selection method that can be suitably used for television/radio relay broadcasting services, etc., which require high speed broadcasting.

When broadcasting from a location other than a broadcasting station, such as a theater or baseball game, there is a method in which a broadcasting vehicle is placed at the site, the radio waves transmitted from the vehicle are received by the relay station, and then the radio waves are sent back to the broadcasting station. Common.

In this case, if there is a one-to-one relationship between relay vehicles and relay stations, and the usable deaf transmission frequencies are n waves and one dark wave is assigned to each relay vehicle, the problem of multiple speeds will not occur. .

However, currently the frequency allocation is 2 per station.
Since the frequency is limited to before and after, it is necessary to allocate it efficiently. Furthermore, the range in which the relay vehicle can move is limited due to the transmitting output of the relay vehicle, and on the other hand, since the relay station is fixed, the relay service can be carried out within a certain area.

Conventionally, when allocating frequencies during busy relay operations, the antenna of the ninth relay station, which can determine the general location of the relay vehicle, is pointed in that direction, and the relay vehicle actually sends out a test radio wave and the relay station receives the signal. After confirming on the monitor that it is double speed with other relay vehicles and B is reached, assign it to that relay vehicle and Ln7]
. If there are other broadcast vehicles, they must be operated one by one in the same way as above, so it takes time to allocate frequencies, and if there are three or more frequencies and four or more broadcast vehicles, it will be extremely difficult. It required a lot of effort.

The purpose of the present invention is to achieve a certain draft level within a limited area.
By inputting the location information of the relay vehicle during TV/radio relay, it is possible to efficiently allocate frequencies regardless of the frequency and restrictions of the relay vehicle/relay station, and in a short time.
It also provides a frequency selection method that can be operated and confirmed without any knowledge of altitude.

In order to achieve the above object, the frequency selection system according to the present invention consists of a relay station installed at two or more different locations, and two or more relay vehicles that move within the radio wave reception area of the relay station. In a frequency selection method in a communication system where the number of transmitting and receiving frequencies is less than the number of relay vehicles, information on the predetermined position where the relay vehicle should move, the positional information of the relay station corresponding to the relay vehicle, and the information on the usable transmitting and receiving frequencies is collected. A position information input/output circuit having an input section for inputting information for each line and an output section for outputting frequency information assigned to the receiving area of the relay station and the relay vehicle; Information on all relay vehicles, relay stations, and usable transmitting and receiving frequencies is received and processed to determine the reception area of each relay station, and frequencies are assigned to all relay vehicles and relay stations so that there are no double speeds. and a frequency allocation circuit that provides information to the position information input/output circuit.

With the front configuration, the objectives of the invention are fully achieved.

Hereinafter, the present invention will be explained in more detail with reference to the drawings.

FIG. 1 is a circuit block diagram showing the configuration of a frequency selection system according to the present invention.

In the figure, 1 is an input section for inputting each relay station, each relay vehicle, and usable transmission/reception frequency data, and a frequency allocation circuit 2 outputs frequency information assigned to each relay vehicle and the reception area of the relay station. 2 is a frequency allocation circuit that performs control to allocate frequencies so as not to exceed each location information and available frequency information; 3 is a frequency allocation circuit for each relay station and an outline thereof; Angle output circuits 43 to 4n are receiving heads at each relay station, and 58 to 5n are receiving parabolic antennas installed on each of the heads.

FIG. 2 is a diagram showing a reception area determined by a frequency allocation circuit based on position information. In the figure, X is the relay vehicle position, Y is the relay station position, coordinates (16*xa,), m(yo,
Xl) @(yl 5xl), (Yt*x6) is the entire relayable area, coordinates (yl, xo).

The area surrounded by (xs, y<), (yzmxx) * (Y2 * xo) is where relay station Y (x3. y4) is connected to relay station X (
xz, ya), the reception area α is the relay vehicle
This is the angle at which reception is possible.

FIG. 7 is a circuit block diagram showing an embodiment of the present invention.

As mentioned above, 6 is a relay van, a light pen for inputting the relay station's position information, 7 is a position information input/output control unit, and 8 is a display unit that displays the receiving area of each relay station. The circuit section corresponds to the position information input/output circuit 1. Reference numeral 9 indicates a central processing unit of the stored program control device, and reference numeral 10 indicates a memory unit, and these circuits correspond to the frequency allocation circuit 2. 11
12 is an input/output unit for inputting and outputting position information to the receiving platform, and a frequency and approximate angle to the receiving platform. A part of the input/output unit 12 corresponds to the frequency and approximate angle output circuit 3.

The location information of the relay vehicle and the relay station is entered by hitting the display section 8 with the light pen 6 (K). With these operations, the location of the relay vehicle and the location of the corresponding relay station can be set to 1.
The data is inputted to the central processing unit f9 via the input/output unit 2 after being instructed one by one. The central processing unit 9 creates the reception area of the relay station while storing this information in the memory unit 5, and the information on the reception area is displayed on the display unit 8 via the position information input/output control unit 7. . When all positional information is inputted as shown in Figure 2, the central control unit f9 allocates frequencies while comparing the frequency limit value and the number of relay vehicles, and the information is input and outputted for positional information in the same way as above. It is displayed on the display section 8 via the control section 7. In this case, by displaying each reception area in color, it is possible to instantly make clear to the operator whether the reception area is acceptable or not.

As is clear from the above explanation, according to the present invention, even if the frequency is limited, it is possible to relay the radio waves without multiple speeds.
It is possible to use a number of relay vehicles and relay stations that would not be possible with human operations, and since it is not necessary to actually transmit and receive test radio waves, operations can be performed in a short time, and basically all you need to do is input location information. Therefore, it can be operated without having advanced technical knowledge, and is useful for labor saving.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing the configuration of a frequency selection system according to the present invention, and FIGS. 2 to 6 are diagrams showing reception areas based on position information input. FIG. 7 is a circuit diagram showing an embodiment of the frequency selection method according to the present invention. 1... Position information input/output circuit 2... Frequency allocation circuit 3... Frequency and approximate angle output circuit 4... Receiving platform 5... Parabolic antenna 6... Light bench
7... Location information input/output control section 8... Reception area display section 9... Central processing unit lO... Memory section 11.
...Receiving head 12... - Information input/output section and human output section of frequency and approximate angle for the receiving head Patent applicant: NEC Corporation Representative Patent attorney Hisashi Inoro 5a 22 figures, 3 figures Figure 4 Figure 5 Figure 6 Off Figure Procedural Amendment April 27, 1980 Mr. Kazuo Wakasugi, Commissioner of the Patent Office], Indication of the case 1988 Patent Application No. 222898 2, Name of the invention Frequency Selection method 3, person making the correction 4, agent ~\Contents of the town correction (patent application 1972-222898)! 1.1 Correct "reception area α wa" from line 3 to line 4 of page 6 of the specification to "reception area α wa". (2) Add the following to the 4th line of page 6 of the specification after "...is a receivable angle." 3 to 6 are the patterns of each reception area, where X indicates a relay vehicle and Y indicates a relay station.
(XI, X2, X3), 3 relay stations (Y
l. Y2, Y3) and two frequencies (a, b), and will be explained using a specific example. The position information input/output circuit 1 shown in FIG. 1 inputs relay vehicle X, uncorresponding relay station Y, and frequency (a, b) information, and the frequency allocation circuit 2 inputs a set of information as shown in FIG. Hanging car X
Connect the coordinates of the relay station Y and the coordinates of the xy line and the Y coordinate (X3
, y4) on one side α. Set the receivable angle for each angle, extend the line of each angle to the relayable area, and set the reception area. If there are other relay vehicle/relay station combinations, they are created in the same way. The patterns created here are considered to be those shown in FIGS. 3 to 6. 3rd F! 1 is a pattern in which only one relay vehicle exists in the reception area of each relay station, and in this case, three relay vehicles can transmit using only one frequency. Figure 4 shows a case where three relay vehicles are in the reception area of one relay station, and if yt and xt are 8 frequencies, Y2. X2
has 5 frequencies, and Y3. X3 may receive either frequency a or b, and cannot be determined. Furthermore, since the transmission directions of the relay vehicles are all opposite, there are cases where this is practically possible. FIG. 5 shows a case where three relay vehicles are in the reception area of one relay station, and since the transmitting directions of the relay vehicles are the same, one relay vehicle cannot necessarily relay. Figure 6 shows XI,
There are two relay vehicles, X2, and X2 in the reception area of Y3.
This is the case of only one unit. At this time, 8 for Yl and XI
When frequencies are assigned, Y2°X2 becomes 5 frequencies. Here Y3. X3 can be used because neither the a nor b image frequencies are multi-speeded. As described above, when there are n relay vehicles in the reception area of one relay station, when the frequency is ≦k,
If this holds true, it becomes possible to allocate the same frequency to other relay stations, and all relay vehicles and relay stations become usable. (3) Figure 2 of the attached drawings is amended to the attached Figure 2. that's all

Claims (1)

[Claims] In a communication system that consists of relay stations installed at two or more different locations and two or more relay vehicles that move within the radio wave reception area of the relay station, and where the usable transmitting and receiving frequencies are smaller than the number of relay vehicles. In the frequency selection method, an input section for inputting predetermined position information for the relay vehicle to move, position information of the relay station corresponding to the relay vehicle, and information on usable transmission/reception frequencies for each line; A location information input/output circuit that has an output section that outputs frequency information assigned to the reception area and relay vehicle, and a location information input/output circuit that outputs information on all relay vehicles, relay stations, and usable transmitting/receiving frequencies that are input from the location information input/output circuit. A frequency that receives and processes the information, determines the reception area of each relay station, assigns frequencies to all relay vehicles and relay stations so that multiple speeds are achieved, and provides that information to the above-mentioned information input/output circuit. Frequency selection method consisting of an allocation circuit.