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Multiplexer-related

Interface-for-ISDN-channels

Test circuit of multiplex equipment

An object of the present invention is to provide a test circuit for multiplex equipment to be used ...

Echo canceller

OF THE EMBODIMENTS FIG. 1 is a block diagram illustrating an embodiment of an echo canceller of ...

Listener echo cancellation

The listener echo cancellation means of the present invention employs a finite impulse response (FIR...

Semiconductor integrated device

In the integrated service digital network, the training mode for getting the echo data is carried ...

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 ...

RF power amplifier linearization

OF THE PREFERRED EMBODIMENT Referring now to the drawing, schematically depicted in FIG. 1 is an ...

Waste energy control and management in power amplifier

OF THE DRAWINGS These and other features and advantages of the invention will be readily apparent ...

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 ...

Electronic musical instrument for conducting an arpeggio performance of a stringed instrument

In view of the foregoing, it is therefore an object of the present invention to provide an ...

Digital automatic gain control, as for a receiver

What is claimed is: 1. A gain control for a gain-controllable circuit comprising: means for ...

Interface for ISDN channels

Details

Inventors: Kagami, Naoto;
Assignee: Canon Kabushiki Kaisha (Tokyo, JP)
Primary Examiner: Olms; Douglas W.
Assistant Examiner: Hsu; Alpus H.
Attorney, Agent or Firm: Fitzpatrick, Cella, Harper & Scinto

A line interface for ISDN channels converts an analog signed from an analog communication terminal to digital data and sends the converted digital data to a B-channel of ISDN. The digital data from the B-channel of ISDN is converted to an analog signal and the converted analog signal is then sent to the analog communication terminal.

DETAILED DESCRIPTION It is an object of the present invention to overcome the problem described above.
It is another object of the present invention to improve a line interface.
It is another object of the present invention to enable connection between a digital line and an analog communication terminal.
It is still another object of the present invention to convert a signal from an analog communication terminal to a signal of a digital line to enable connection between a digital line and the analog communication terminal.
Other objects of the present invention will be apparent from the detailed description of the preferred embodiments.

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