Communications: electrical – Digital comparator systems
Patent
1976-04-30
1977-11-01
Pitts, Harold I.
Communications: electrical
Digital comparator systems
340171R, 340171A, 325391, 358194, H04B 106
Patent
active
040568083
ABSTRACT:
Ultrasonic remote control receiver wherein reference frequency pulses are counted during a counting cycle comprising a predetermined number of received command signals, each command signal occupying a different frequency channel. At the end of each counting cycle, the reference frequency count is compared with the count during the preceding counting cycle. A validated output from the receiver occurs only after a predetermined number of uninterrupted identical comparisons have occurred. Interference with a validated output signal by spurious received signals e.g. noise signals is minimized by providing for invalidation of an output signal only after a predetermined number of uninterrupted non-identical count comparisons. Two of the receiver outputs are used to generate a variable duty cycle pulse train, one output increasing and the other decreasing the duty cycle. A receiver is disclosed in the context of a TV broadcast receiver wherein the variable level d.c. control signal is used to control an electronic sound attenuator. The remote control receiver also includes power-on-reset and mute functions. Each of the remote control receiver outputs has a parallel connected manual switch, to some of which anti-bounce circuits are connected.
REFERENCES:
patent: 3523278 (1970-08-01), Hinkel
patent: 3737577 (1973-06-01), Birkin
patent: 3863215 (1975-01-01), McGrogan
patent: 3876980 (1975-04-01), Haemmig
patent: 3980956 (1976-09-01), Wooling
Comfort James T.
Donaldson Richard L.
Levine Harold
Pitts Harold I.
Texas Instruments Incorporated
LandOfFree
Ultrasonic remote control receiver suitable for TV receiver does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ultrasonic remote control receiver suitable for TV receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonic remote control receiver suitable for TV receiver will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-10187