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Automatic gain control circuit for a modem receiver
An object of the present invention is to provide an automatic gain control circuit for a modem receiver that improves gain tracking for a large range of twisted pair ...
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All-digital method and apparatus for demodulating an analog signal
It is an object of the invention to provide a demodulator that is totally digital in structure, and thus in which ISI-eliminating filtering must take place after the ...
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Test circuit of multiplex equipment
An object of the present invention is to provide a test circuit for multiplex equipment to be used when the multiplex equipment is installed or a failure occurs in the ...
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Echo canceller
OF THE EMBODIMENTS FIG. 1 is a block diagram illustrating an embodiment of an echo canceller of the present invention. In FIG. 1, an input terminal 1, encoder 2 and ...
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Listener echo cancellation
The listener echo cancellation means of the present invention employs a finite impulse response (FIR) filter with adjustable coefficients to approximate the listener ...
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Semiconductor integrated device
In the integrated service digital network, the training mode for getting the echo data is carried out prior to substantial data transmission. When sending from the ...
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Method of recording and reproduction of information using a recording medium available for information overlap recording, a recording medium and a recording and reproducing apparatus using the method
An object of the present invention is to provide an information recording medium which can store first information (ROM information) which is recorded at manufacturing ...
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RF power amplifier linearization
OF THE PREFERRED EMBODIMENT Referring now to the drawing, schematically depicted in FIG. 1 is an amplifier linearization system constructed in accordance with, and ...
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Waste energy control and management in power amplifier
OF THE DRAWINGS These and other features and advantages of the invention will be readily apparent to one of ordinary skill in the art from the following description, ...
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Facility for combining and amplifying two broadband signals
It is therefore an object of the invention to provide a facility which is suitable for combining and amplifying two broadband signals that are received from different ...
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Multiplexer-related 
