JPH04264805A - Frequency converter - Google Patents

Abstract

PURPOSE:To change and update a control program without replacing a ROM circuit storing the control program of a control circuit controlling a frequency conversion part. CONSTITUTION:A frequency conversion part 1 performing frequency conversion, a control circuit 2 performing the control of this frequency conversion part 1, an EEPROM circuit 3 storing the control program of this control circuit 2, and an interface 4 inputting this control program from the outside with data transfer, are provided. The change and update of the control program in the EEPROM circuit 3 is enabled by the control from the outside.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a frequency conversion device,
In particular, the present invention relates to a frequency conversion device for a satellite communication earth station that can input a control program from the outside through data transmission.

0002

2. Description of the Related Art A general configuration of a conventional frequency converter of this type is shown in FIG. This type of frequency converter includes a frequency converter 1, a control circuit 2 for controlling the frequency converter 1, and a ROM circuit 5 in which a control program for controlling the control circuit 2 is written. It is made up of. In this frequency converter, the control circuit 2 controls the frequency converter 1 based on a control program written in the ROM circuit 5, so that the frequency converter 1 performs the required frequency conversion.

0003

[Problems to be Solved by the Invention] The conventional frequency converter described above has a ROM installed inside the frequency converter.
A control program written in the circuit 3 inputs and displays various setting items and controls the internal circuit. Therefore, every time there is a change or update of the control program, R
It is necessary to replace the OM circuit 5, and replacing the ROM circuit in a communication station installed in a distant area, such as a frequency converter for a satellite communication earth station, is a difficult task. The problem is that it becomes extremely troublesome. An object of the present invention is to provide a frequency converter that can perform various controls on the frequency converter without replacing the ROM circuit.

0004

[Means for Solving the Problems] A frequency converter of the present invention includes a frequency converter that converts frequencies, a control circuit that controls this frequency converter, and a controller for storing a control program for this control circuit. It consists of an electrically rewritable memory circuit and an interface for inputting this control program from the outside via data transmission. For example, the frequency conversion device is used as a frequency conversion device for a satellite communications earth station.

[0005]

[Operation] According to the present invention, by transmitting the control program from the outside, the control program stored in the memory circuit can be rewritten via the interface.
Eliminates the need to replace the OM circuit.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram of an embodiment of the present invention. This frequency conversion device stores a frequency conversion section 1 that converts frequencies, a control circuit 2 that controls the frequency conversion section 1, and a control program for the control circuit 2, and the stored contents can be electrically rewritten. memory circuit, namely EEPROM (E
Electrical Erasable Progra
The EEPROM circuit 3 has an interface 4 for inputting this control program from the outside to the EEPROM circuit 3 by data transmission. In this configuration, a control program can be input to the EEPROM circuit 3 from the outside through data transmission via the interface 4, and the stored contents of the EEPROM circuit 3 can be rewritten to the input control program.

Therefore, when a change occurs in the input and display of various setting items or in the control of the internal circuit, the changed or updated control program is input to the EEPROM circuit 3 through the interface 4.
The control program stored in the M circuit 3 can be rewritten. Then, the control circuit 3 controls the frequency conversion section 1 based on the rewritten control program, thereby executing the changed or updated frequency conversion operation. Therefore, even if the control program is changed or updated, there is no need to replace the ROM circuit, and the control program can be easily changed or updated by external operation.

[0008]

As explained above, the present invention provides an EEPROM circuit for storing a control program for a control circuit that controls a frequency converter, and allows the control program to be read from the outside via an interface. Since the control program is configured to be input to the EEPROM circuit, the control program can be changed or updated by external operation without replacing the ROM circuit. In particular, the present invention has the advantage that control programs for communication stations installed in remote areas, such as satellite communication earth stations, can be updated or changed very easily.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of a frequency conversion device of the present invention.

FIG. 2 is a block diagram of an example of a conventional frequency conversion device.

[Explanation of symbols]

1 Frequency conversion section
2 Control circuit 3 EEPROM circuit
4 Interface 5 ROM circuit

Claims (2)

[Claims] [Claim 1] A frequency conversion unit that converts a frequency;
It includes a control circuit that controls this frequency converter, an electrically rewritable memory circuit that stores a control program for this control circuit, and an interface that inputs this control program from the outside by data transmission. A frequency conversion device characterized by: 2. The frequency conversion device according to claim 1, which is a frequency conversion device for a satellite communication earth station.