JPH0787468A - Transmitter, receiver and micro code revision system - Google Patents

Abstract

PURPOSE:To eliminate the need for replacement of a ROM at the receiver side in the case of updating or revising a micro code by sending the micro code and picture data multiplexed with each other from a sender side and down-loading the sent micro code to a RAM. CONSTITUTION:Picture data processed by an encoder 1c are multiplexed micro code data from a micro coder 1a at a multiplexer 1d and the multiplexed data are sent from a transmitter 1e as transmission data. The sent transmission data are received by a tuner 1f of a receiver and demultiplexed at a demultiplexer 1g and the picture data and the micro code data are recovered. The micro code data are down-loaded to a RAM 1j and the picture data are subjected to processing such as expansion. In this case, a picture processor 1i reads the micro code from the RAM 1j and recovered according to a processing procedure described in the code and the reproduced picture signal is fed to a monitor 1k, on which the picture is displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image signal transmitting / receiving apparatus, and more particularly to a micro code updating method for an image processor on the receiving side.

[0002]

2. Description of the Related Art In recent years, compression transmission of image signals has been regarded as important in the communication field.

A conventional transmission method will be described below.
FIG. 2 shows the configuration of the receiving side of a conventional image signal transmission system. In the transmitting side of FIG. 2, 2a is a video source for generating an image signal, 2b is an encoder for compressing and coding the image signal, and 2c is a transmitter for transmitting the image data. On the receiving side, 2d is a tuner for receiving the transmitted image signal, 2e includes an image processing processor 2f, a decoder for expanding image data and other image processing, 2g is an image processing processor 2f. The ROM 2h in which the micro code is written is a monitor for displaying the processed image data as an image.

The operation of the image data transmission system configured as described above will be described below. First, the image data sent from the video source 2a is compression-encoded by the encoder 2b and sent by the transmitter 2c. On the receiving side, the sent image data is received by the tuner 2d and sent to the decoder 2e. Here, the image processing processor 2f performs the expansion processing of the image data, and the image processing processor 2f obtains the image data processing procedure by reading the micro code from the ROM 2g connected by the data bus. Works. In this way, the image data is decoded, becomes an image signal, is sent to the monitor 2h, and is displayed as an image.

[0005]

However, in the above-mentioned conventional configuration, the micro code necessary for the operation procedure of the image processor 2f is written in the ROM 2g connected by the data bus, so that the micro code is used. However, the ROM 2g must be replaced on the receiving side every time when there is an update or change, and it is difficult to upgrade or modify the micro code.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a micro code updating system which does not require a ROM exchange operation on the receiving side when updating or changing a micro code. And

[0007]

In order to achieve this object, a microcode updating system of the present invention comprises a transmitting side, an encoder for compressing and encoding image data, an image data output from the encoder and a receiving side. The image processing processor program (hereinafter referred to as micro code) on the side is multiplexed, the multiplexer for outputting the transmission data and the transmitter for transmitting the transmission data are provided, and the reception side transmits the transmission data from the transmission side. A receiver for receiving transmission data, a demultiplexer for demultiplexing image data and microcode from the transmission data, a RAM for downloading microcode, and the microcode stored on the RAM. And an image processing processor that performs image expansion processing using the above as a program.

[0008]

In this structure, when it becomes necessary to update or change the micro code, the micro code is sent from the transmitting side together with the image data, and the micro code is downloaded to the RAM mounted on the receiving side. The microcode is rewritten by loading, and the image processor operates by reading the microcode stored in the RAM.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

On the transmitting side of FIG. 1, 1a is a micro
A code 1b is a video source for generating an image signal, 1c is an encoder for compressing and coding an image signal from the video source, 1d is multiplexing the image data and the micro code data, and outputs transmission data. The multiplexer 1e is a transmitter for sending out the multiplexed transmission data. On the receiving side, 1f is a tuner for receiving transmitted transmission data, 1g is a demultiplexer for demultiplexing image data and micro code data, 1h includes an image processor 1i,
A decoder for decompressing image data and other image processing, 1j is connected to the image processing processor 1i by a data bus, storage means such as RAM for storing microcode, and 1k is This is a monitor for displaying the image signal reproduced by the decoder.

The operation of the micro code updating system configured as described above will be described with reference to FIG. First, image processing such as compression is applied to the image data sent from the video source 1b by the encoder 1c. The processed image data is the multiplexer 1d.
Then, it is multiplexed with the micro code data from the micro code 1a, becomes transmission data from the multiplexer, and is transmitted by the transmitter 1e. The transmitted transmission data is received by the tuner 1f on the receiving side, demultiplexed by the demultiplexer 1g, and image data and micro
Code data is reproduced. The micro code
The data is downloaded and loaded into the RAM 1j, and the image data is subjected to image processing such as expansion by the decoder 1h. At this time, the image processor 1i uses the RAMs 1j to
The image signal read by the micro code and reproduced according to the image processing procedure described in the micro code is sent to the monitor 1k and displayed as an image.

It should be noted that although the present embodiment is directed to images, it goes without saying that it can also be used in a system for voice or other signal processing.

Further, although the present embodiment is constituted by wireless communication such as satellite broadcasting, wired communication such as CATV may be used.

[0014]

As described above, according to the present invention, the micro code and the image data are multiplexed and transmitted from the transmitting side, and the sent micro code is down-loaded into the RAM. It is possible to realize an excellent micro code updating system that can easily change or update codes without complicated procedures such as replacement of parts on the receiving side.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a micro code updating system according to a first embodiment of the present invention.

FIG. 2 is a block diagram of a conventional image data transmission system.

[Explanation of symbols]

1a Micro code 1c Encoder 1d Multiplexer for multiplexing image data and micro code data 1g Demultiplexer for demultiplexing image data and micro code data 1i Image processor 1j Down sending micro code・ RAM for loading

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Claims (3)

[Claims] 1. An encoder for compressing and encoding image data, and a multiplexer for multiplexing image data output from the encoder and an image processor program (hereinafter referred to as micro code) on the receiving side and outputting transmission data. And a transmitter for transmitting the transmission data. 2. A receiver for receiving transmission data in which image data and micro code are multiplexed transmitted from a transmitting side, and image data and micro data from the transmission data.
A demultiplexer that removes code multiplexing and a micro
A receiving device comprising storage means for downloading / loading a code, and an image processing processor for performing image expansion processing using the micro code stored in the storage means as a program. 3. A transmission side, an encoder for compressing and encoding image data, a multiplexer for multiplexing the image data and microcode output from the encoder and outputting transmission data, and a transmitter for transmitting the transmission data. The receiving side includes a receiver for receiving the transmission data transmitted from the transmitting side, a demultiplexer for demultiplexing the image data and the micro code from the transmission data, and downloading the micro code. A micro code updating system comprising a storage unit for storing the image data, and an image processor for performing image expansion processing using the micro code stored in the storage unit as a program.