Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Patent
1997-09-03
1999-03-30
Ton, My-Trang Nu
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synchronizing
327310, 348528, H03L 700
Patent
active
058894217
ABSTRACT:
The present invention relates to a device for detecting the locking of an automatic gain control circuit, the automatic gain control circuit receiving a signal to be regulated, a check signal and a sampling control signal for driving the operation of the circuit. The detection device includes a comparator receiving the check signal and the signal to be regulated or a signal representative of the signal to be regulated. The comparator generates two logic signals, the states of which form a specific combination of logic states when the value of the signal to be regulated is in a range of values including the value of the check signal. A logic comparator circuit generates a logic comparison signal, the state of which is representative of the presence or absence of this specific combination, and a storage means, driven by the sampling control signal, stores the state of the signal provided by the logic circuit.
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French Search Report from French Patent Application 96 11219, filed Sep. 9, 1996.
Cirot Eric
Lebouleux Nicolas
Nu Ton My-Trang
SGS-Thomson Microelectronics S.A.
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