Pulse or digital communications – Repeaters – Testing
Patent
1989-07-06
1992-05-19
Safourek, Benedict V.
Pulse or digital communications
Repeaters
Testing
375 17, 375 24, 375 98, 370 37, 370 77, 370112, 370114, H04J 302
Patent
active
051154501
ABSTRACT:
High speed communication of digital information is accomplished using an analog transmission format. A transmitter receiving digital data in parallel multi-bit words converts digital words in conversion clock cycles to a single analog signal relative to a DC level. The transmitter also includes a reference pulse generator which combines a reference pulse with the analog levels generated by the converter to form an analog output for transmission to the receiver. The receiver includes a detector receiving the analog output. In response to the reference pulse, the receiver generates a recovery clock. A flash analog-to-digital converter converts the analog levels in the analog output to multi-bit digital outputs. The parallel multi-bit words are regenerated in recovery clock cycles from sampling the multi-bit digital output once per cycle. Thus, by using a digital to analog to digital system, effective bit rates are achieved that are higher than the switching speeds of the transmitter and receiver.
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Advanced Micro Devices , Inc.
Safourek Benedict V.
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