Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1982-02-22
1984-01-10
Miller, C. D.
Communications: electrical
Audible indication
Percussion-type sound producer
370 18, H03K 1302
Patent
active
044255624
ABSTRACT:
A device for introducing digital data into a medium having bivalent or multivalent states and having a coding device and a commutation device. The coding device receives under the control of a first clock pulse series, data signals and forms therefrom a number of code bits which are combined as an input to the commutation device. The coding efficiency is smaller than 1. Under the control of a second clock pulse series, the commutation device switches each input to apply the code bits to a number of channels of the medium, so that for each channel certain code restrictions are satisfied.
REFERENCES:
patent: 3262104 (1966-07-01), Clynes
patent: 3358083 (1967-12-01), Helm
patent: 3573799 (1971-04-01), Drinnan
patent: 3631471 (1971-12-01), Griffiths
patent: 3689899 (1972-09-01), Franaszek
patent: 4139839 (1979-02-01), Fletcher
Cannon, Jr. James J.
Miller C. D.
U.S. Philips Corporation
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