Telecommunications – Transmitter and receiver at separate stations – With control signal
Patent
1994-01-26
1996-02-20
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at separate stations
With control signal
333 14, 381106, H04B 164
Patent
active
054936993
ABSTRACT:
A signal processing circuit includes two analog signal processors, an operational amplifier, a rectifier, and a reference potential generator. Each analog signal processor has four input terminals and two output terminals, and is designed to operate such that the first and second output terminals are set at the same potential and that a current difference between the first and second output terminals is proportional to a product of a potential difference between the first and second input terminal and a potential difference between the third and fourth input terminal. The first, second, third and fourth input terminals of the first analog signal processor are connected to receive an input signal, a first reference potential, a second reference potential, and a third reference potential, respectively. The output terminals of the first analog signal processor are connected to the negative and positive input terminals of the operational amplifier, respectively. The first, second, third and fourth input terminals of the second analog signal processor are connected to receive an output signal of the operational amplifier circuit, a fourth reference potential, the second reference potential, and a difference between the second reference potential and an output potential of a rectifier circuit, respectively. The output terminals of the second analog signal processor are connected to the negative and positive input terminals of the operational amplifier.
REFERENCES:
patent: 4642582 (1987-02-01), Fucito et al.
patent: 4701722 (1987-10-01), Dolby
patent: 5023490 (1991-06-01), Gittinger
patent: 5293139 (1994-03-01), Polonen et al.
CICC '93, "1.8V CMOS Analog Compander with 80dB Dynamic Range", pp. 16.1.1-16.1.4, S. Shioda.
Sahoda Masayuki
Shioda Shinobu
Eisenzopf Reinhard J.
Kabushiki Kaisha Toshiba
Sobutka Philip J.
LandOfFree
Low noise communication analog compressor and analog expander does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low noise communication analog compressor and analog expander, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low noise communication analog compressor and analog expander will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1363395