WO2001009691A9 - Narrow band scanning rf receiver - Google Patents

Narrow band scanning rf receiver

Info

Publication number
WO2001009691A9
WO2001009691A9 PCT/US2000/020558 US0020558W WO0109691A9 WO 2001009691 A9 WO2001009691 A9 WO 2001009691A9 US 0020558 W US0020558 W US 0020558W WO 0109691 A9 WO0109691 A9 WO 0109691A9
Authority
WO
WIPO (PCT)
Prior art keywords
radio frequency
receiver
narrow band
band scanning
stage
Prior art date
Application number
PCT/US2000/020558
Other languages
French (fr)
Other versions
WO2001009691A1 (en
Inventor
Terence Crimmins
Mickey Nguyen
Original Assignee
Chamberlain Group Inc
Terence Crimmins
Mickey Nguyen
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 Chamberlain Group Inc, Terence Crimmins, Mickey Nguyen filed Critical Chamberlain Group Inc
Priority to AU64983/00A priority Critical patent/AU6498300A/en
Priority to CA002380103A priority patent/CA2380103A1/en
Priority to EP00952251A priority patent/EP1204904A1/en
Priority to MXPA02001112A priority patent/MXPA02001112A/en
Publication of WO2001009691A1 publication Critical patent/WO2001009691A1/en
Publication of WO2001009691A9 publication Critical patent/WO2001009691A9/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/18—Automatic scanning over a band of frequencies
    • H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
    • H03J7/28—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using counters or frequency dividers
    • H03J7/285—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using counters or frequency dividers the counter or frequency divider being used in a phase locked loop

Landscapes

  • Power-Operated Mechanisms For Wings (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

The narrow band scanning RF receiver (12) includes a ph ase-locked loop radio frequency stage having a reference oscillator (38) for receiving a radio frequency signal. The radio frequency stage has a frequency which may be selected by a controller via a selectable frequency signal supplied to the reference oscillator (38). The controller tests for the presence of a legitimate radio frequency signal and also temporarily inhibits the tuned radio frequency stage when changing from a first selected frequency to a second selected frequency. The receiver (12) produces an output for controlling an electric motor (100) for operating a barrier.
PCT/US2000/020558 1999-07-30 2000-07-28 Narrow band scanning rf receiver WO2001009691A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU64983/00A AU6498300A (en) 1999-07-30 2000-07-28 Narrow band scanning rf receiver
CA002380103A CA2380103A1 (en) 1999-07-30 2000-07-28 Narrow band scanning rf receiver
EP00952251A EP1204904A1 (en) 1999-07-30 2000-07-28 Narrow band scanning rf receiver
MXPA02001112A MXPA02001112A (en) 1999-07-30 2000-07-28 Narrow band scanning rf receiver.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14662099P 1999-07-30 1999-07-30
US60/146,620 1999-07-30

Publications (2)

Publication Number Publication Date
WO2001009691A1 WO2001009691A1 (en) 2001-02-08
WO2001009691A9 true WO2001009691A9 (en) 2002-07-18

Family

ID=22518198

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/020558 WO2001009691A1 (en) 1999-07-30 2000-07-28 Narrow band scanning rf receiver

Country Status (5)

Country Link
EP (1) EP1204904A1 (en)
AU (1) AU6498300A (en)
CA (1) CA2380103A1 (en)
MX (1) MXPA02001112A (en)
WO (1) WO2001009691A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7561020B2 (en) 2005-06-27 2009-07-14 The Chamberlain Group, Inc. System and method for using operator as a repeater

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5694848A (en) * 1979-12-28 1981-07-31 Nec Corp Control system of transmitter
US5686903A (en) * 1995-05-19 1997-11-11 Prince Corporation Trainable RF transceiver

Also Published As

Publication number Publication date
CA2380103A1 (en) 2001-02-08
AU6498300A (en) 2001-02-19
WO2001009691A1 (en) 2001-02-08
EP1204904A1 (en) 2002-05-15
MXPA02001112A (en) 2002-08-20

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