Method and apparatus for recovering data and clock...

Details Method and apparatus for recovering data and clock... Method and apparatus for recovering data and clock...

Category

H - Electricity

Subcategory

04

Subsubcategory

L

CPC

354/231, 328/87

IPC codes

H04L 7/00 (2006.01) H04L 7/02 (2006.01) H04L 25/49 (2006.01)

Type

Patent

Patent number

CA 1066370

Description

ABSTRACT OF THE DISCLOSURE A method and apparatus is described for receiving a data streams incorporating a self-clocking Manchester code. The data streams is applied to monostable multivibrators which produce pulses at each positive-going and negative-going transition in the voltage level of the data stream. Output pulses from the monostable multivibrators are applied to a third monostable multivibrator which is responsive to only the positive-going pulses applied thereto; the third multivibrator produces an out- put pulse having a period greater than one-half the bit period, but less than whole bit period, of the data stream. The positive-going voltage transition of the output of the third multivibrator is used to trigger a clock pulse which is applied to a pair of gates. The gates enable a pair of latches to which the data stream is applied to recover data from the stream and apply the data to a shift register.

Application Number

245381

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