Communications: electrical – Condition responsive indicating system – Specified housing
Patent
1978-10-23
1981-02-17
Safourek, Benedict V.
Communications: electrical
Condition responsive indicating system
Specified housing
340167A, 375 22, H03K 708
Patent
active
042518121
ABSTRACT:
A remote control apparatus is constituted by a command encoding device and a command decoding device. In the command encoding device, a timing pulse generator indicates the beginning and end of a time interval of a length which is a function of a command to be encoded, a pulse of the first duration shorter than said time interval is initiated in response to said beginning of the time interval, a pulse of a second duration different from said first duration and shorter than said time interval is initiated in response to said end of the time interval, and said pulses of said first and second duration respectively, are sequentially transmitted in the command decoding device, upon the receipt of a pulse of said first duration followed by a pulse of said second duration, a first indication is produced in response to the receipt of said pulse of the first duration and a second indication is produced in response to the receipt of said pulse of the second duration, and a device provides a value which varies as a function of the length of time between each said second indication which immediately precedes it, whereupon, a command signal is produced as a function of said value.
REFERENCES:
patent: 2617873 (1952-11-01), Lovell-foot et al.
patent: 2871290 (1959-01-01), Earp
patent: 3257651 (1966-06-01), Feisel
patent: 3852713 (1974-12-01), Roberts et al.
patent: 4007455 (1977-02-01), Mabuchi et al.
patent: 4072898 (1978-02-01), Hellman et al.
Mogi Takao
Murakami Shigetoshi
Okada Hisao
Eslinger Lewis H.
Safourek Benedict V.
Sinderbrand Alvin
Sony Corporation
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