CA2073341C - Systeme de commande de frequence - Google Patents

Systeme de commande de frequence

Info

Publication number
CA2073341C
CA2073341C CA002073341A CA2073341A CA2073341C CA 2073341 C CA2073341 C CA 2073341C CA 002073341 A CA002073341 A CA 002073341A CA 2073341 A CA2073341 A CA 2073341A CA 2073341 C CA2073341 C CA 2073341C
Authority
CA
Canada
Prior art keywords
signal
frequency
control system
transmitted
supervisory
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CA002073341A
Other languages
English (en)
Inventor
Theodore T. Sanecki
Ralph D. Smallwood
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of CA2073341C publication Critical patent/CA2073341C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
    • H03J1/0041—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for frequency synthesis with counters or frequency dividers
    • H03J1/005—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for frequency synthesis with counters or frequency dividers in a loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
CA002073341A 1990-12-31 1991-12-26 Systeme de commande de frequence Expired - Fee Related CA2073341C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US63631190A 1990-12-31 1990-12-31
US636,311 1990-12-31

Publications (1)

Publication Number Publication Date
CA2073341C true CA2073341C (fr) 1996-06-25

Family

ID=24551346

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002073341A Expired - Fee Related CA2073341C (fr) 1990-12-31 1991-12-26 Systeme de commande de frequence

Country Status (6)

Country Link
JP (1) JPH05505088A (fr)
KR (1) KR970007361B1 (fr)
CA (1) CA2073341C (fr)
GB (1) GB2258961B (fr)
MX (1) MX9102892A (fr)
WO (1) WO1992012578A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5280644A (en) * 1992-12-22 1994-01-18 Motorola, Inc. Frequency control circuit, and associated method, for a receiver operative to receive signals-transmitted thereto in intermittent bursts
KR100804843B1 (ko) * 2005-04-22 2008-02-20 헬쓰 앤드 라이프 컴퍼니 리미티드 무선 전자 의료 장치의 주파수 채널 변경 방법

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3662269A (en) * 1969-04-28 1972-05-09 Us Navy Remote drift rate compensator for frequency standards
US4618996A (en) * 1984-04-24 1986-10-21 Avnet, Inc. Dual pilot phase lock loop for radio frequency transmission
US4703520A (en) * 1986-10-31 1987-10-27 Motorola, Inc. Radio transceiver having an adaptive reference oscillator
US5042082A (en) * 1989-06-26 1991-08-20 Telefonaktiebolaget L. M. Ericsson Mobile assisted handoff

Also Published As

Publication number Publication date
MX9102892A (es) 1992-06-01
GB2258961B (en) 1995-03-08
WO1992012578A1 (fr) 1992-07-23
JPH05505088A (ja) 1993-07-29
KR970007361B1 (ko) 1997-05-07
KR920704447A (ko) 1992-12-19
GB9218094D0 (en) 1992-11-04
GB2258961A (en) 1993-02-24

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed