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Device for converting analogue signals into digital signals

An analog signal, digital signal technology, applied in the direction of analog/digital conversion, analog-to-digital converter, code conversion, etc., can solve problems such as unsatisfactory device, slow communication and uncertainty

Active Publication Date: 2014-11-19
CENT NAT DE LA RECHERCHE SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the setup was not satisfactory, especially due to the slow and uncertain communication between the original analog signal and the obtained digital signal due to the use of a large number of electronic components

Method used

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  • Device for converting analogue signals into digital signals
  • Device for converting analogue signals into digital signals
  • Device for converting analogue signals into digital signals

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Experimental program
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Embodiment Construction

[0022] figure 1 The conversion device 1 shown in is for conversion of analog signals Sa-1, Sa-2 ... Sa-i ... Sa-n present in a plurality of channels V-1, V-2 ... V-i ... V-n, wherein the multiple Each channel is formed, for example, by terminal connections of a matrix of sensors, in particular image sensors, light or thermal radiation sensors, such as bolometers, photomultipliers, or detection sensors.

[0023] The switching device 1 comprises a common circuit Cc connected to a plurality of local circuits Cl-1, Cl-2 ... Cl-i ... Cl-n, which are adapted so as to be respectively transmitted to the local circuits Cl- -1, Cl-2 ... Cl-i analog signals Sa-1, Sa-2 ... Sa-i ... Sa-n are converted into digital signals Sn-1, Sn-2 ... Sn-i ... Sn-n, the Digital signals can be obtained at the outputs of these partial circuits.

[0024] Such as figure 2 As shown, the common circuit Cc includes a digital control circuit 2 and a converter 3, wherein the digital control circuit 2 receives...

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Abstract

Method and device for converting analogue signals, of a plurality of pathways, into digital signals. A common circuit (2, 3) generates first analogue signals corresponding to high-order bits of digital signals. For each pathway, a first means compares the first analogue signals with the signal to be converted. A first means (18) stores high-order bits corresponding to the value of a first analogue signal close to the signal to be converted. A means (9) stores the deviation between the analogue signal to be converted and said first detected value. A generator means (11, 12) generates a predetermined number of second analogue signals. A second means compares by successive approximations said second analogue signals with said deviation. A means (20) stores said low-order bits corresponding to the results arising from said second means of comparison. A means (22) assembles said high-order bits and said low-order bits.

Description

technical field [0001] The invention relates to the field of converting analog signals into digital signals. [0002] Especially in the field of imagers comprising a matrix of sensors, analog signals present at the ends of the columns of sensors need to be converted into digital signals. Background technique [0003] Document US-2007 / 0279506 describes a conversion device with the aid of steps and conversion by successive approximation. However, this device is not very satisfactory, especially due to the use of a large number of electronic components, making the communication between the original analog signal and the obtained digital signal slow and uncertain. [0004] As the width of the sensor columns tends to be reduced to improve image quality, difficulties arise. The difficulty is related to the speed of conversion, reducing the power consumption of the electronic circuits used, obtaining high resolution, i.e. obtaining a digital signal with a high bit count, obtainin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M1/14
CPCH03M1/123H03M1/145H03M1/56H03M1/46H03M1/12H03M1/002H03M1/124H03M1/345H03M1/44
Inventor 丹尼尔·德扎希尼法塔赫·埃尔拉·罗比劳特伦特·格林·马特尔
Owner CENT NAT DE LA RECHERCHE SCI