Communications: electrical – Continuously variable indicating – With meter reading
Patent
1989-02-27
1990-10-02
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
34082547, 455 38, 455343, H04B 700
Patent
active
049610732
ABSTRACT:
A battery saving apparatus for supplying power to a selective call communication receiver for enabling the detection of a synchronization codeword in data received in a predetermined signaling format comprises circuits for supplying power to the receiver, and for detecting valid data received during a first portion of the first predetermined time interval. Power is maintained to the receiver for the remainder of the first predetermined time interval when valid data is detected in the first portion. A synchronization codeword detector is included for detecting a synchronization codeword. When valid data is subsequently detected following a second portion of the first predetermined time interval and the synchronization codeword is not detected in the first predetermined time interval, power is maintained to the receiver for a second predetermined time interval to further enable detection of the synchronization codeword.
REFERENCES:
patent: 4353065 (1982-10-01), Mori
patent: 4506386 (1985-03-01), Ichikawa et al.
patent: 4652875 (1987-03-01), Waki
patent: 4837854 (1989-06-01), Oyogi et al.
The Post Office Code Standardization Advisory Group, "Standard Message Formats for Digital Radiopaging", Autumn 1980.
Drapac George
Oliboni Mark L.
Woltz Stephen H.
Ingrassia Vincent B.
Macnak Philip P.
Magistre Dervis
Motorola Inc.
Sarli, Jr. Anthony
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