Clock pulse transmission circuit

Details Clock pulse transmission circuit Clock pulse transmission circuit

1998-05-07

2000-05-16

Tran, Toan

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Clock or pulse waveform generating

327175, 327170, 327171, G06F 104

Patent

active

060642483

ABSTRACT:
A clock pulse transmission circuit is provided which can automatically correct, in case the duty factor of transmitted clock pulses has an error, the duty factor error. In a receiving unit 2, a pair of positive and negative clock pulses Sp and Sn transmitted from a transmitting unit 1 are inputted to a receiver 12 which outputs, in response thereto, a pair of positive and negative clock pulses V3 and V4. The DC components of these positive and negative clock pulses are taken out by a first integrator circuit and a second integrator circuit respectively to transmit them to the transmitting unit 1 through a pair of transmission lines 25 and 26, respectively. In the transmitting unit 1, a difference between the direct current levels of the respective positive and negative clock pulses is found and integrated. The integrated value is supplied to a driver 6 as a threshold voltage Vth. The driver 6 compares an output signal of a time constant circuit 20 with the threshold voltage to output a pair of positive and negative clock pulses Sp and Sn and transmits them to the receiving unit 2.

REFERENCES:
patent: 4694504 (1987-09-01), Porter et al.
patent: 4713841 (1987-12-01), Porter et al.

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