Data transmission apparatus with loopback topology

Details Data transmission apparatus with loopback topology Data transmission apparatus with loopback topology

1988-07-08

1991-02-12

Shaw, Gareth D.

Boots, shoes, and leggings

3649265, 364935, 3649352, 3649501, 364960, 36494834, 365 78, 377 64, G06F 1300

Patent

active

049929739

ABSTRACT:
A data transmission apparatus which is connected with a shift register of a plural stages forming a forward path of data transmission line, and a shift register of a plural stages forming a backward path of the same, and a loop-back part therebetween, and comprises bypasses between the shift register on the forward path and on the backward path to bypass the transmitted data when significant data does not exist on the loop-back part side from a stage on which the bypass is comprised and no data stays at a stage where the bypass is comprised, so that data is transmitted at high speed, and which is constructed to be able to control the bypass from external, so that testing of circuitry is easy.

REFERENCES:
patent: 3300724 (1967-01-01), Cutaia
patent: 3540004 (1970-11-01), Hansen
patent: 3735362 (1973-05-01), Ashany et al.
patent: 3748647 (1973-07-01), Ashany et al.
patent: 4156288 (1979-05-01), Spandorfer
patent: 4176400 (1979-11-01), Heckel
patent: 4649512 (1987-03-01), Nukiyama
"The Bipolar Digital Integrated Circuits Data Book for Design Engineers", (Part 2), Texas Instruments, 1982, vol. 17, pp. 57-62.

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