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Analog-digital converter base on compression sampling technique

An analog-to-digital converter and compression sampling technology, applied in the digital field, can solve problems such as information entropy loss, and achieve the effect of reducing the amount of data collection

Inactive Publication Date: 2009-04-15
鲍跃全 +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The lossy compression algorithm will cause some loss of information entropy, but as long as this loss is limited within the allowable range, it is acceptable

Method used

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  • Analog-digital converter base on compression sampling technique
  • Analog-digital converter base on compression sampling technique
  • Analog-digital converter base on compression sampling technique

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Embodiment 1

[0014] Embodiment 1, combining figure 2 , traditional digital-to-analog converter DAC (2), analog multiplier (3), integrating circuit (4) and traditional ADC (5) described in the present invention can all utilize ready-made modules and products at present, and there is no difference to their models special requirements. For the microcontroller (1), it has the function of storing data; a corresponding program needs to be written so that it can meet the function of compressed sampling. First, use C language to write a program to generate m groups of random numbers with a length of n and a normal distribution with a mean of zero and a variance of 1 / m, and convert them into binary numbers, and then use assembly language to write and save the binary numbers. in the microprocessor. Then write the control program so that the microcontroller can issue instructions to convert the input binary random number into an analog signal φ through the traditional digital-to-analog converter D...

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Abstract

The invention aims at providing an ADC based on compressing and sampling technique which does not consider the sampling frequency, is only related to the openness of a signal, can collect compressed format data directly, and can greatly reduce the data collection quantity. The ADC consists of an analog signal, a compressing and sampling ADC and a compressed format binary digital signal. The analog signal is connected with the compressing and sampling ADC which is connected with the compressed format binary digital signal. The ADC can realize the function of compressing data while converting the analog signal to the digital signal, namely, the compressed format digital signal is collected from the analog signal directly, and the data collection quantity is greatly reduced compared with the traditional ADC.

Description

(1) Technical field [0001] The invention relates to digital technology, specifically an analog-to-digital converter based on compressed sampling technology. (2) Background technology [0002] Data compression is to remove the redundant part of the data. The traditional data compression coding theory is based on information theory, which can be divided into lossless compression algorithm and lossy compression algorithm. A lossless compression algorithm means that there is no loss in the process of data compression and decompression. The lossy compression algorithm will cause some loss of information entropy, but it is acceptable as long as this loss is limited within the allowable range. There are usually three types of classical compression coding methods: predictive coding, transform coding, and statistical coding. In addition, newer ones include fractal coding, wavelet transform image compression coding, etc. [0003] In 2006, Professor Candès of the California Institut...

Claims

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Application Information

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IPC IPC(8): H03M1/12H03M7/30
Inventor 鲍跃全李惠
Owner 鲍跃全
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