Boots – shoes – and leggings
Patent
1981-09-29
1984-01-24
Smith, Jerry
Boots, shoes, and leggings
G06F 506
Patent
active
044280637
ABSTRACT:
A device for the time compression of a continuous sequence of data, so as to effect compression in a ratio k=p
(p and n being positive integers, p not being a factor of n and n not being a factor of p), the ratio p
representing the ratio of time required for transmission of data after compression to the time required for transmission of the same data before compression. Two memories and a control circuit generate clock signals to fill one of the memories with a package of N bits while emptying the other one. The control circuit receives a clock signal whose frequency is Fu, and divides its frequency by n and by p to generate a clock signal whose frequency is Fu
and p clock signals whose frequencies are Fu/p and whose phases are shifted of 2.pi./p from one to another. A multiplexer selects one of these p clock signals, at the time when storing and writing of each package of data begins, in order to generate a read clock signal and a write clock signal which are in phase. The multiplexer is controlled by a counter determining which of the p clock signals is in phase with the clock signal whose frequency is Fu
.
REFERENCES:
patent: 3293613 (1966-12-01), Gabor
patent: 3406378 (1968-10-01), Bradford
patent: 3761894 (1973-09-01), Pilc et al.
patent: 3772657 (1973-11-01), Marsalka et al.
patent: 4229815 (1980-10-01), Cummiskey
"Thomson-CSF"
Smith Jerry
Watson Mark P.
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