Pulse or digital communications – Repeaters – Testing
Patent
1997-06-09
2000-06-06
Chin, Stephen
Pulse or digital communications
Repeaters
Testing
375200, 375206, 375209, 375210, 331 78, 327164, 708250, 708251, 708252, H04B 1500, H04K 100, H04L 2730, H03B 2900
Patent
active
06072823&
ABSTRACT:
A pseudo-random noise series generator which can change the timing of generation of a PN series arbitrarily and with no instantaneous cut-off of the output. At the time of system start, the whole period or a certain beginning length of a PN series generated by a tapped shift register is stored into a RAM. The stored PN series is output from a position designated by an address signal. An address generator for generating the address signal on an externally applied timing control signal increments an address by one for each step from an initial value set by the timing control signal. In the case where a new timing different from the old timing is set by the timing control signal, the address is incremented or decremented instantaneously by a difference between the old timing and the new timing and a normal incrementing operation is thereafter started again. The thus generated address signal is applied to an address bus for the RAM, thereby making it possible to instantaneously change the timing of generation of a PN series output as required by the timing control signal.
REFERENCES:
patent: 3984668 (1976-10-01), Zetterberg et al.
patent: 4047008 (1977-09-01), Perkins
patent: 4161041 (1979-07-01), Butler et al.
patent: 4386411 (1983-05-01), Risk et al.
patent: 4408298 (1983-10-01), Ruhland
patent: 4875021 (1989-10-01), Sonetaka
patent: 4901264 (1990-02-01), Hayashi
patent: 5463334 (1995-10-01), Griffin et al.
patent: 5488658 (1996-01-01), Hirashima
patent: 5920591 (1999-07-01), Fukasawa et al.
Copy of European Search Report dated Oct. 12, 1999.
Patent Abstracts of Japan, vol. 016, No. 364 (E-1244), Aug. 6, 1992 and JP 04 115616 A (Toshiba Corp.), Apr. 16, 1992.
Chin Stephen
Maddox Michael W.
Matsushita Electric - Industrial Co., Ltd.
LandOfFree
Pseudo-random noise series generator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pseudo-random noise series generator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pseudo-random noise series generator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2220460