GB2258961B - Frequency control system - Google Patents

Frequency control system

Info

Publication number
GB2258961B
GB2258961B GB9218094A GB9218094A GB2258961B GB 2258961 B GB2258961 B GB 2258961B GB 9218094 A GB9218094 A GB 9218094A GB 9218094 A GB9218094 A GB 9218094A GB 2258961 B GB2258961 B GB 2258961B
Authority
GB
United Kingdom
Prior art keywords
control system
frequency control
frequency
control
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
GB9218094A
Other languages
English (en)
Other versions
GB2258961A (en
GB9218094D0 (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
Publication of GB9218094D0 publication Critical patent/GB9218094D0/en
Publication of GB2258961A publication Critical patent/GB2258961A/en
Application granted granted Critical
Publication of GB2258961B publication Critical patent/GB2258961B/en
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Superheterodyne Receivers (AREA)
GB9218094A 1990-12-31 1992-08-24 Frequency control system Expired - Fee Related GB2258961B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US63631190A 1990-12-31 1990-12-31
PCT/US1991/009674 WO1992012578A1 (fr) 1990-12-31 1991-12-26 Systeme de commande de frequence

Publications (3)

Publication Number Publication Date
GB9218094D0 GB9218094D0 (en) 1992-11-04
GB2258961A GB2258961A (en) 1993-02-24
GB2258961B true GB2258961B (en) 1995-03-08

Family

ID=24551346

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9218094A Expired - Fee Related GB2258961B (en) 1990-12-31 1992-08-24 Frequency control system

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

Citations (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

Patent Citations (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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM TECH.DISCLOSURE BULLETIN,VOL6,NO.12 12 MAY 1964, HORNER et al"Digital Bain and Frequency Control *

Also Published As

Publication number Publication date
JPH05505088A (ja) 1993-07-29
GB2258961A (en) 1993-02-24
WO1992012578A1 (fr) 1992-07-23
MX9102892A (es) 1992-06-01
KR970007361B1 (ko) 1997-05-07
GB9218094D0 (en) 1992-11-04
CA2073341C (fr) 1996-06-25
KR920704447A (ko) 1992-12-19

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20011226