The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 06, 2001
Filed:
Oct. 06, 1999
Pierre Dautriche, Meylan, FR;
THOMSON multimedia, Boulogne, FR;
Abstract
The device has reference current sources (T,, T,, T,) which are arranged in such a way that the sum of the currents flowing through each of the said sources is equal to the input current (I,, I′,) and output current sources (T,, T,, T,), in each of which the current flowing through the reference sources is duplicated and which are arranged in such a way that the sum of the currents flowing through the output sources is equal to the output current (I,, I′,). The number of reference sources (T,, T,, T,) and output sources (T,, T,, T,) which are connected is controlled by the digital signal (,) and determines the gain of the device. Application to the circuit for processing the signals output by a read head of an optical disc reader apparatus.