ITRM930771A1 - Circuito avvisatore audio per radio ricevitori. - Google Patents

Circuito avvisatore audio per radio ricevitori.

Info

Publication number
ITRM930771A1
ITRM930771A1 IT000771A ITRM930771A ITRM930771A1 IT RM930771 A1 ITRM930771 A1 IT RM930771A1 IT 000771 A IT000771 A IT 000771A IT RM930771 A ITRM930771 A IT RM930771A IT RM930771 A1 ITRM930771 A1 IT RM930771A1
Authority
IT
Italy
Prior art keywords
warning circuit
radio receivers
audio warning
audio
receivers
Prior art date
Application number
IT000771A
Other languages
English (en)
Inventor
Jr William Paul Alberth
David M Demuro
Tony Anhtuan Trandai
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 ITRM930771A0 publication Critical patent/ITRM930771A0/it
Publication of ITRM930771A1 publication Critical patent/ITRM930771A1/it
Application granted granted Critical
Publication of IT1262452B publication Critical patent/IT1262452B/it

Links

Classifications

    • 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
    • H04B1/66—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 for reducing bandwidth of signals; for improving efficiency of transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
    • H04M1/0241—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings using relative motion of the body parts to change the operational status of the telephone set, e.g. switching on/off, answering incoming call
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
    • H04M11/022—Paging systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
    • H04M19/042—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations with variable loudness of the ringing tone, e.g. variable envelope or amplitude of ring signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
ITRM930771A 1992-11-27 1993-11-22 Circuito avvisatore audio per radio ricevitori. IT1262452B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/982,342 US5404582A (en) 1992-11-27 1992-11-27 Aural annunciator circuit for a receiver

Publications (3)

Publication Number Publication Date
ITRM930771A0 ITRM930771A0 (it) 1993-11-22
ITRM930771A1 true ITRM930771A1 (it) 1995-05-22
IT1262452B IT1262452B (it) 1996-06-19

Family

ID=25529064

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM930771A IT1262452B (it) 1992-11-27 1993-11-22 Circuito avvisatore audio per radio ricevitori.

Country Status (10)

Country Link
US (1) US5404582A (it)
JP (1) JP3312735B2 (it)
KR (2) KR0135627B1 (it)
CA (1) CA2127269C (it)
FR (1) FR2698749B1 (it)
GB (1) GB2277851B (it)
IT (1) IT1262452B (it)
MX (1) MX9307451A (it)
SG (1) SG81857A1 (it)
WO (1) WO1994013065A1 (it)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5499292A (en) * 1994-05-06 1996-03-12 At&T Corp. On hook/off hook mechanism for wrist telephone
JP3666672B2 (ja) 1994-12-19 2005-06-29 ソニー株式会社 通信端末装置
US5749056A (en) * 1995-08-31 1998-05-05 Motorola, Inc. Audio ramping technique for a radio
US6006114A (en) * 1995-11-06 1999-12-21 Nokia Mobiles Phones Limited Radiotelephone enabling adjustment of alerting indicator volume/level during incoming calls
US6035211A (en) * 1996-12-19 2000-03-07 Ericsson Inc. Dual use speaker for both voice communication and signalling
FR2775861B1 (fr) * 1998-03-05 2000-03-31 Alsthom Cge Alcatel Terminal de radiotelecommunication
JP2908421B1 (ja) * 1998-04-02 1999-06-21 静岡日本電気株式会社 携帯電話装置
US6134455A (en) * 1998-06-30 2000-10-17 Nokia Mobile Phones Limited Annunciating apparatus, and associated method, for radio communication device
US6269257B1 (en) * 1999-01-21 2001-07-31 Agere Systems Guardian Corp. Adaptive paging signal in cordless telephone
US6349225B1 (en) 1999-04-01 2002-02-19 Ericsson Inc. Hearing protection for a wireless communications device
JP2001268187A (ja) * 2000-03-14 2001-09-28 Nec Saitama Ltd 折り畳み型携帯電話機の呼出音の鳴動システム及び方法
KR100407208B1 (ko) * 2001-07-16 2003-11-28 삼성전자주식회사 휴대용 전화기의 착신 경보음 레벨 조정방법 및 장치
JP4309091B2 (ja) * 2002-03-06 2009-08-05 日本電気株式会社 折り畳み式携帯情報端末及びそれに用いる状態報知方法並びにそのプログラム
US20050136993A1 (en) * 2003-12-23 2005-06-23 Harri Lilja Method of saving power, radio terminal equipment arrangement, cellular core unit, and peripheral unit
JP2006042077A (ja) * 2004-07-28 2006-02-09 Nec Corp 携帯通信端末および携帯通信端末の着信音量制御方法
US20060267787A1 (en) * 2005-05-27 2006-11-30 Siemens Vdo Automotive Corporation External antenna open circuit detection
KR100724116B1 (ko) * 2005-08-24 2007-06-04 엘지전자 주식회사 내장형 안테나를 구비한 이동통신 단말기

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4495652A (en) * 1983-02-28 1985-01-22 General Electric Company Control arrangement for radio apparatus
US4523058A (en) * 1983-10-24 1985-06-11 Uniden Corporation Of America Ringer signal wave shaping circuit
US4504701A (en) * 1983-11-14 1985-03-12 J. C. Penney Company, Inc. Telephone having circuitry for reducing the audio output of the ringing signal
JPS60242738A (ja) * 1984-05-17 1985-12-02 Sony Corp コ−ドレステレホン
US4680787A (en) * 1984-11-21 1987-07-14 Motorola, Inc. Portable radiotelephone vehicular converter and remote handset
US4845772A (en) * 1988-06-13 1989-07-04 Motorola, Inc. Portable radiotelephone with control switch disabling
US4924193A (en) * 1987-01-30 1990-05-08 Nec Corporation Volume control circuit for use in portable telephone or the like
JP2557408B2 (ja) * 1987-09-14 1996-11-27 株式会社東芝 無線通信装置
JPH02205151A (ja) * 1989-02-03 1990-08-15 Nec Corp 通信装置
JPH03297232A (ja) * 1990-01-31 1991-12-27 Nec Corp 携帯電話機の呼出回路
US5172408A (en) * 1990-08-01 1992-12-15 At&T Bell Laboratories Speakerphone state-controlled alerting arrangement
US5224151A (en) * 1992-04-01 1993-06-29 At&T Bell Laboratories Automatic handset-speakephone switching arrangement for portable communication device

Also Published As

Publication number Publication date
FR2698749B1 (fr) 1996-07-19
KR950700641A (ko) 1995-01-16
GB9413969D0 (en) 1994-08-31
GB2277851A (en) 1994-11-09
MX9307451A (es) 1994-08-31
JPH07503594A (ja) 1995-04-13
FR2698749A1 (fr) 1994-06-03
GB2277851B (en) 1997-04-16
US5404582A (en) 1995-04-04
CA2127269C (en) 2000-01-18
CA2127269A1 (en) 1994-06-09
ITRM930771A0 (it) 1993-11-22
WO1994013065A1 (en) 1994-06-09
IT1262452B (it) 1996-06-19
JP3312735B2 (ja) 2002-08-12
KR0135627B1 (ko) 1998-04-27
SG81857A1 (en) 2001-07-24

Similar Documents

Publication Publication Date Title
DE59308734D1 (de) Verkehrsrundfunkempfänger
FI921868A7 (fi) Radiojärjestelmä
FI905667A7 (fi) Radiosaendarmottagarsystem.
FI943927A7 (fi) Radiojärjestelmä
FI925431A7 (fi) Radiojärjestelmä
ITRM930771A1 (it) Circuito avvisatore audio per radio ricevitori.
DE69432004D1 (de) Radioempfänger
DE59207560D1 (de) RDS-Rundfunkempfänger
DE69411469D1 (de) Rundfunksignalempfänger
DE69429302D1 (de) Radioempfänger
DE69428184D1 (de) Funkempfänger
DE69522050D1 (de) AM-Funkempfänger
DE69326315D1 (de) FM-Tuner
ITRM930277A0 (it) Procedimento e circuito per la sintonizzazione selettiva di apparecchiradio.
FI920995A7 (fi) Radiojärjestelmä
DE69431699D1 (de) Radioempfänger
FI934564A7 (fi) Digital radiomottagare
FI905995A7 (fi) Radiosystem.
FI905666A7 (fi) Radiosaendarmottagarsystem.
IT8820848A0 (it) Circuito di ammutolimento per amplificatori audio.
DE69215737D1 (de) Radioempfangssysteme
FI905994A7 (fi) Radiosystem.
FI960874A7 (fi) Radiovastaanotinlaite
NL193123B (nl) Radio-ontvanger met cassettebandeenheid.
DE69303348D1 (de) RDS-Rundfunkempfänger

Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19961010