Amplified analog information reading device with linear DB...

Details Amplified analog information reading device with linear DB... Amplified analog information reading device with linear DB...

2006-08-29

2006-08-29

JeanPierre, Peguy (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S170000

Reexamination Certificate

active

07098838

ABSTRACT:
An amplified reading device includes an adjustable gain amplifier AMP receiving analog information and of which 2jsuccessive gain values, respectively adjustable by 2jsuccessive values of a first control word of j bits, follow a geometric progression of ratio a; an analog/digital converter CAN connected to the output of the amplifier, having an adjustable input full scale, of which 2kdifferent values, respectively adjustable, for each gain value, from 2ksuccessive values of a second control word of k bits, follow a geometric progression of ratio a1/2k, the converter delivering a digital code corresponding to the analog information amplified by an overall gain, the value of which depends on the gain value of the amplifier and on that of the full scale, and a controller MCM designed to deliver the first and second control words.

REFERENCES:
patent: 4041443 (1977-08-01), Thigpen
patent: 4275413 (1981-06-01), Sakamoto et al.
patent: 5343201 (1994-08-01), Takayama et al.
patent: 6556163 (2003-04-01), Hwang et al.
patent: 2002/0105449 (2002-08-01), Schreier et al.
patent: 61163721 (1986-07-01), None
patent: 11069242 (1999-03-01), None

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