Registers – Systems controlled by data bearing records
Patent
1992-05-12
1993-12-07
Pitts, Harold
Registers
Systems controlled by data bearing records
235492, G06F 1520
Patent
active
052685608
ABSTRACT:
A key device includes a plurality of coils arranged on a printed board having an insertion hole along the longitudinal direction of the insertion hole. One of the plurality of coils is an electromagnetic induction generating coil connected to a power supply, and at least two of the remaining coils are key signal generating coils. In a key main body which can be inserted/removed into/from the insertion hole, a closed circuit is formed on a printed board. In the closed circuit, a plurality of coils and capacitors arranged between the plurality of coils are formed at positions opposite to the plurality of coils arranged along the longitudinal direction of the insertion hole. A bypass is formed in each of the coils arranged in the key main body, and a coil or coils for specifying a key type by switching operations of jumper line switching sections are selected. A key signal or key signals are generated from a key signal generating coil or key signal generating coils opposite to the selected coil or coils.
REFERENCES:
patent: 2347072 (1967-10-01), Ross
patent: 4788623 (1988-11-01), Haug
Pitts Harold
Tokyo Electric Co. Ltd.
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