Method and circuit for controlling the parallel operation of multipath coding integrated circuit
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A technology for coding integrated circuits and control methods, which is applied in the field of electronic information and can solve problems such as mutual interference, errors, and information loss.
Inactive Publication Date: 2007-10-24
HUAQIAO UNIVERSITY
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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 terminals are connected together, and the information is transmitted to the information receiving point through a single channel, forming a multi-point-to-multiple network as shown in Figure 2. In
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[0016] The control method for parallel operation of multi-channel encoding integrated circuits is realized through the following scheme: multiple multi-channel encoding integrated circuits work in parallel, limiting the number of frames of a single multi-channel encoding integrated circuit sending serial code streams, as long as the multi-channel decoding integrated circuits The need for receiving and correct decoding is enough, so that sending information at one time will not occupy too much channel time; when a multi-channel coding integrated circuit sends information, shield the multi-channel coding integrated circuits at other sites so that they Do not respond to sending requests, send serial code streams to the channel to avoid signal conflicts; all sites are given priority levels in advance, when several sites request to send information at the same time, the multi-channel encoding integrated circuit of the site with higher priority When sending the serial code stream, th...
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Abstract
The disclosed control circuit for concurrent working of multiplex-coding IC comprises: a monostable trigger, a D-trigger, a AND gate, an OR gate, a NOR gate, a diode, a resistor, and a capacitor, wherein it can screen other for one IC transmitting, or sends message as PRI when some IC request at one time. The circuit can be implemented by different ways. This invention avoids conflict or message missing in multipoint-to-multipoint information transmission system.
Description
technical field [0001] The invention belongs to the field of electronic information, and relates to a control method and 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 in...
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