Telephonic communications – Telephone line or system combined with diverse electrical... – To produce visual-graphic copy
Patent
1990-01-29
1991-07-09
Ng, Jin F.
Telephonic communications
Telephone line or system combined with diverse electrical...
To produce visual-graphic copy
379106, H04M 1100
Patent
active
050312090
ABSTRACT:
An automatic meter reader includes a microprocessor connected through digital logic circuitry and a telephone interface to a metering transducer and a telephone line, to develop modulated signals for reporting of registered meter data and for sampling of received signals to detect a carrier and to effect demodulation and develop control data. A count-down arrangement is used for developing the modulated signals. In sampling received signals, a sample count is developed which is proportional to the duration of one cycle of a received signal and which is compared with stored counts for detection of a carrier and for demodulation. A debounce arrangement is included in the logic circuitry.
REFERENCES:
patent: 3872252 (1975-03-01), Malchman et al.
patent: 4689801 (1987-08-01), Nurczyk et al.
patent: 4866761 (1989-09-01), Thornborough et al.
Gomez Gregory M.
Pridemore Donald F.
Strobel Donald H.
Thornborough Raymond J.
Badger Meter Inc.
Matar Ahmad F.
Ng Jin F.
LandOfFree
Automatic meter reader with microcomputer control system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Automatic meter reader with microcomputer control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic meter reader with microcomputer control system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-624034