DE69115396T2 - Schaltungsanordnung zum Demodulieren eines FM-modulierten Signals - Google Patents

Schaltungsanordnung zum Demodulieren eines FM-modulierten Signals

Info

Publication number
DE69115396T2
DE69115396T2 DE69115396T DE69115396T DE69115396T2 DE 69115396 T2 DE69115396 T2 DE 69115396T2 DE 69115396 T DE69115396 T DE 69115396T DE 69115396 T DE69115396 T DE 69115396T DE 69115396 T2 DE69115396 T2 DE 69115396T2
Authority
DE
Germany
Prior art keywords
demodulating
head switch
modulated signal
circuit arrangement
signal
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
DE69115396T
Other languages
English (en)
Other versions
DE69115396D1 (de
Inventor
Josephus Adrianus Pijnenburg
Willem Hadde Noordermeer
Hulze Gerrit Jan Groot
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.)
Koninklijke Philips NV
Original Assignee
Philips Electronics NV
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 Philips Electronics NV filed Critical Philips Electronics NV
Application granted granted Critical
Publication of DE69115396D1 publication Critical patent/DE69115396D1/de
Publication of DE69115396T2 publication Critical patent/DE69115396T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/9201—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal
    • H04N5/9202—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal the additional signal being a sound signal
    • H04N5/9204—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal the additional signal being a sound signal using frequency division multiplex
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/12—Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative functions or for selection between operative heads; Masking of beams, e.g. of light beams
    • G11B15/14—Masking or switching periodically, e.g. of rotating heads
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/02—Analogue recording or reproducing
    • G11B20/025—Error detection or correction
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/02—Analogue recording or reproducing
    • G11B20/06—Angle-modulation recording or reproducing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/001—Details of arrangements applicable to more than one type of frequency demodulator
    • H03D3/002—Modifications of demodulators to reduce interference by undesired signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/345—Muting during a short period of time when noise pulses are detected, i.e. blanking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/93—Regeneration of the television signal or of selected parts thereof
    • H04N5/94—Signal drop-out compensation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/802—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving processing of the sound signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Power Engineering (AREA)
  • Television Signal Processing For Recording (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Circuits Of Receivers In General (AREA)
DE69115396T 1990-09-12 1991-09-06 Schaltungsanordnung zum Demodulieren eines FM-modulierten Signals Expired - Fee Related DE69115396T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL9002004A NL9002004A (nl) 1990-09-12 1990-09-12 Inrichting voor het demoduleren van een fm-gemoduleerd signaal.

Publications (2)

Publication Number Publication Date
DE69115396D1 DE69115396D1 (de) 1996-01-25
DE69115396T2 true DE69115396T2 (de) 1996-08-01

Family

ID=19857665

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69115396T Expired - Fee Related DE69115396T2 (de) 1990-09-12 1991-09-06 Schaltungsanordnung zum Demodulieren eines FM-modulierten Signals

Country Status (6)

Country Link
US (1) US5121073A (de)
EP (1) EP0475521B1 (de)
JP (1) JP3031760B2 (de)
AT (1) ATE131669T1 (de)
DE (1) DE69115396T2 (de)
NL (1) NL9002004A (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19524794A1 (de) * 1995-07-07 1997-01-09 Philips Patentverwaltung Schaltungsanordnung zur Farbsignal-Verarbeitung
US20060156517A1 (en) 1997-08-22 2006-07-20 Hammerslag Gary R Reel based closure system
US7950112B2 (en) 1997-08-22 2011-05-31 Boa Technology, Inc. Reel based closure system
US6298226B1 (en) * 1998-11-30 2001-10-02 Conexant Systems, Inc. Receiver for RF signals
JP4874986B2 (ja) 2004-10-29 2012-02-15 ボア テクノロジイ インコーポレイテッド ケーブル締め付け機構およびその付勢方法
WO2008033963A2 (en) 2006-09-12 2008-03-20 Boa Technology, Inc. Closure system for braces, protective wear and similar articles
EP2237692B1 (de) 2008-01-18 2015-01-07 Boa Technology, Inc. Verschlusssystem
US8468657B2 (en) 2008-11-21 2013-06-25 Boa Technology, Inc. Reel based lacing system
CN102821635B (zh) 2010-01-21 2015-10-14 博技术有限公司 用于系带系统的引导装置
KR101942227B1 (ko) 2010-04-30 2019-01-24 보아 테크놀러지, 인크. 릴 기반 끈 조임 시스템
US9101181B2 (en) 2011-10-13 2015-08-11 Boa Technology Inc. Reel-based lacing system
US9439477B2 (en) 2013-01-28 2016-09-13 Boa Technology Inc. Lace fixation assembly and system
US9706814B2 (en) 2013-07-10 2017-07-18 Boa Technology Inc. Closure devices including incremental release mechanisms and methods therefor
US9610185B2 (en) 2013-03-05 2017-04-04 Boa Technology Inc. Systems, methods, and devices for automatic closure of medical devices
WO2014165541A2 (en) 2013-04-01 2014-10-09 Boa Technology Inc. Methods and devices for retrofitting footwear to include a reel based closure system
DE112014003135B4 (de) 2013-07-02 2020-12-24 Boa Technology Inc. Rolle zur verwendung mit einem verschnürungssystem zum festziehen eines gegenstandes sowie vorrichtungen hierzu und verfahren zum zusammenbauen einer vorrichtung zum festziehen eines gegenstandes
WO2015035257A2 (en) 2013-09-05 2015-03-12 Boa Technology Inc. Alternative lacing guides for tightening mechanisms and methods therefor
US9681705B2 (en) 2013-09-13 2017-06-20 Boa Technology Inc. Failure compensating lace tension devices and methods
KR101895140B1 (ko) 2013-11-18 2018-09-04 보아 테크놀러지, 인크. 보철 및 장구의 자동 폐쇄를 제공하기 위한 방법 및 장치
US20160058127A1 (en) 2014-08-28 2016-03-03 Boa Technology Inc. Devices and methods for enhancing the fit of boots and other footwear
KR102391910B1 (ko) 2016-08-02 2022-04-28 보아 테크놀러지, 인크. 신발끈 결속 시스템의 인장 부재 가이드
US10543630B2 (en) 2017-02-27 2020-01-28 Boa Technology Inc. Reel based closure system employing a friction based tension mechanism
US11492228B2 (en) 2019-05-01 2022-11-08 Boa Technology Inc. Reel based closure system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5746306A (en) * 1980-09-03 1982-03-16 Hitachi Ltd Aural signal muting circuit of magnetic recorder and reproducer
NL8603036A (nl) * 1986-11-28 1988-06-16 Philips Nv Inrichting voor het demoduleren van een fm-gemoduleerd signaal.

Also Published As

Publication number Publication date
JPH04271066A (ja) 1992-09-28
EP0475521B1 (de) 1995-12-13
NL9002004A (nl) 1991-01-02
EP0475521A1 (de) 1992-03-18
DE69115396D1 (de) 1996-01-25
ATE131669T1 (de) 1995-12-15
JP3031760B2 (ja) 2000-04-10
US5121073A (en) 1992-06-09

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V., EINDHOVEN, N

8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee