Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1979-12-20
1982-02-09
Sloyan, Thomas J.
Communications: electrical
Audible indication
Percussion-type sound producer
250231SE, 340347M, H03K 1302, H03K 1318
Patent
active
043152520
ABSTRACT:
Apparatus is disclosed for detecting the relative position or displacement between two movable bodies, wherein a reader or sensor mounted on one of the two bodies reads a code pattern on the other body. A code pattern is provided that represents a binary-coded base-n number, each digit of a base-n number being represented by each of first, second, third, . . . , and m-th unit-distance codes (where m being the least submultiple except 1 of the base-n number system), these codes in turn being converted into a common binary code so that the relative position or displacement between the two bodies may be represented by the binary-coded base-n number.
REFERENCES:
patent: 1942106 (1934-01-01), Kottman
patent: 3165731 (1965-01-01), Spaulding
patent: 3594764 (1971-07-01), Walsh
patent: 3845290 (1974-10-01), Reitsma
patent: 3862407 (1975-01-01), Baldauf et al.
Ishikawajima-Harima Jukogyo Kabushiki Kaisha
Sloyan Thomas J.
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