Telegraphy – Systems – Line-clearing and circuit maintenance
Patent
1977-05-16
1978-08-15
Shaw, Gareth D.
Telegraphy
Systems
Line-clearing and circuit maintenance
H04L 700
Patent
active
041074599
ABSTRACT:
A system for distinguishing a digital signal in a received serial bit stream signal, and for displaying data represented by the distinguished digital signal is disclosed. The system is contained in a single console. The bits represent data in an original digital signal having a predetermined bit rate, a predetermined number of bits per word, a predetermined number of words per frame, and a predetermined number of frames per subframe, with there being a predetermined synchronizing code word in each frame for defining the frame. The system includes a processing network for processing the received signal to reconstruct the bits, to recognize the code word from the recognized bits, and to define the frames in response to recognition of the code word to thereby distinguish a digital signal having the predetermined number of bits per word, the predetermined number of words per frame, and the predetermined number of frames per subframe. A keyboard device is coupled to the processing network for enabling an operator to indicate the predetermined bit rate, the predetermined number of bits per words, the predetermined number of words per frame, the predetermined number of frames per subframe, and the predetermined code word to the processing network for programming the processing network to distinguish the digital signal. A cathode ray tube is coupled to the processing network for providing an instant visual feedback from the processor to the operator during operation of the keyboard device, of the programming indications that are indicated to the processing network by operation of the keyboard device and for providing a visual display of data represented by the distinguished digital signal. A tape recorder is coupled to the processing network for recording the programming indications that are provided to the processing network by operation of the keyboard device.
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Computer Controlled Word Selector, DCS Model 4270 Manual, Data-Control Systems, Inc., Danbury, Conn.
Format Synchronizer, DCS Model 4170 Manual, Data Conrol Systems, Inc., Danbury, Conn.
Card Reader, PCM Word Selector, DIA Converter and Display, Model 4211 Manual, Data Conrol Systems, Inc., Danbury, Conn.
Word Selector, Mode 4230 Manual, Data Control Systems, Inc., Danbury, Conn.
PCM Format Simulator Model 4301, Data-Control Systems, Inc. Manual, Danbury, Conn.
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Aydin Data Systems/Monitor Systems, Ft. Washington, Penn. (Jan., 1975).
Conic Corporation
Sachs Michael C.
Shaw Gareth D.
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