Method and circuit for controlling the parallel operation of multipath coding integrated circuit

Abstract

The invention discloses a control circuit for multi-channel encoding and decoding integrated circuits working in parallel, so that the multi-channel encoding and decoding integrated circuits can form a multipoint-to-multipoint information transmission system. The control circuit is composed of a monostable flip-flop, a D flip-flop, an AND gate, an OR gate, an XNOR gate, a diode, a resistor, and a capacitor. It has the ability to limit the number of frames that a multi-channel encoding integrated circuit can send a serial code stream at a time; when one multi-channel encoding integrated circuit transmits a serial code stream, it shields the transmission of other multi-channel encoding integrated circuits; there are several multi-channel encoding integrated circuits When requesting to send at the same time, functions such as information can be sent in order according to the priority level. It makes the multi-point to multi-point information transmission system neither signal conflict nor lose the information that should be transmitted. The control circuit can be realized by a general digital circuit, or a semi-custom or full-custom ASIC can be prepared, or the control circuit can be integrated with a multi-channel coding integrated circuit.

Description

technical field [0001] The invention belongs to the field of electronic information, and relates to a control circuit for multi-channel coded integrated circuits working in parallel, and a multipoint-to-multipoint information transmission system formed therefrom. Background technique [0002] Multi-channel encoding and decoding integrated circuits have many functions, high integration, large number of encoding groups, simple peripheral circuits, low operating voltage, low power consumption, high accuracy and reliability, and the transmission from encoder to decoder Channels can be wired, infrared, ultrasonic, power line carrier, optical fiber, radio frequency, etc., so these devices are widely used in security systems, anti-theft and fire alarm systems, digital code locks, remote control of household appliances, hospital monitoring systems, industrial control, cordless phones , Bus extension selective call, robot control, BP machine, etc. are widely used. Many integrated ci...

AI Technical Summary

Problems solved by technology

However, if there are multiple information collection and sending points in the system, multiple pieces of MC145026 need to work in parallel, and their output ends are connected together, and the information is transmitted to the information receiving point through a single channel. The composition is as follows: figure 2 The multi-point-to-multipoint information transmission system shown in this system, when there are two or more MC145026 information collection points sending serial code streams at the same time, they will interfere with each other in the channel, so that each receiver The MC145027 at the field point cannot be decoded correctly, resulting in information loss or error, which is the shortcoming of this type of encoding and decoding integrated circuit

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