Digital data converting method and apparatus thereof

Details Digital data converting method and apparatus thereof Digital data converting method and apparatus thereof

1984-11-20

1986-03-18

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

H03K 1300

Patent

active

045771804

ABSTRACT:
A digital signal is divided into a series of base words with each m bits of data. Each base word is converted to a converted word having n bits of data, wherein each of n and m is an integer and n is greater than m and the converted word has a predetermined maximum number of consecutive digital zeroes. The value of every odd-numbered bits of said converted word is detected. The converted word is controlled in response to the result of the detection and modulated as an NRZI (non-return to zero, inverted)-coded digital signal with a DC component of zero.

REFERENCES:
patent: 3631471 (1971-12-01), Griffiths
patent: 4352129 (1982-09-01), Baldwin
patent: 4387364 (1983-06-01), Shirota
patent: 4425562 (1984-01-01), DeNiet

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