Selectively called radio receiver in which bit rate detection is

Details Selectively called radio receiver in which bit rate detection is Selectively called radio receiver in which bit rate detection is

1993-10-12

1996-01-23

Tse, Young

Pulse or digital communications

Receivers

375368, 3701055, 455343, 455 383, 34082514, H04L 700, H04Q 700

Patent

active

054870909

ABSTRACT:
In a selectively called radio receiver in which a demodulated signal of a specific bit rate is produced with battery saving kept in synchronism with the demodulated signal, a bit rate detecting unit detects the bit rate with a controllable sensitivity while the synchronism is lost. A bit rate detecting control arrangement controls the sensitivity within a predetermined sensitivity range. The bit rate detecting unit may misdetect the bit rate with a variable misdetection rate which is accumulated to an incremented amount from an initial amount representative of no misdetection while the synchronism is lost. The bit rate detection control arrangement may decrement the misdetection rate to the initial amount when the incremented amount reaches a predetermined amount. Alternatively, the bit rate detection control arrangement may control the misdetection rate between a greater and a smaller amount and then cause the misdetection rate to return to the initial amount. In either event, the bit rate detection control arrangement controls the sensitivity within a predetermined range.

REFERENCES:
patent: 4663623 (1987-05-01), Lax et al.
patent: 4839639 (1989-06-01), Sato et al.
patent: 5095498 (1992-03-01), DeLuca et al.
patent: 5142699 (1992-08-01), Sato et al.
patent: 5148160 (1992-09-01), Kudoh
patent: 5241568 (1993-08-01), Fernandez et al.
patent: 5287099 (1994-02-01), Tsunoda
patent: 5296849 (1994-03-01), Ide
patent: 5379030 (1995-01-01), Nolan et al.

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