CN1064502C - 用于调制解调器的碳精电极麦克风接口 - Google Patents

用于调制解调器的碳精电极麦克风接口 Download PDF

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Publication number
CN1064502C
CN1064502C CN94106578A CN94106578A CN1064502C CN 1064502 C CN1064502 C CN 1064502C CN 94106578 A CN94106578 A CN 94106578A CN 94106578 A CN94106578 A CN 94106578A CN 1064502 C CN1064502 C CN 1064502C
Authority
CN
China
Prior art keywords
circuit
demodulator
modulator
carbon microphone
microphone interface
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
CN94106578A
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English (en)
Chinese (zh)
Other versions
CN1101473A (zh
Inventor
S·P·韦尔
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.)
Harris Corp
Original Assignee
Harris Corp
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 Harris Corp filed Critical Harris Corp
Publication of CN1101473A publication Critical patent/CN1101473A/zh
Application granted granted Critical
Publication of CN1064502C publication Critical patent/CN1064502C/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Telephonic Communication Services (AREA)
  • Telephone Function (AREA)
  • Telephone Set Structure (AREA)
CN94106578A 1993-06-30 1994-06-30 用于调制解调器的碳精电极麦克风接口 Expired - Fee Related CN1064502C (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US8351393A 1993-06-30 1993-06-30
US083,513 1993-06-30
US083513 1993-06-30

Publications (2)

Publication Number Publication Date
CN1101473A CN1101473A (zh) 1995-04-12
CN1064502C true CN1064502C (zh) 2001-04-11

Family

ID=22178817

Family Applications (1)

Application Number Title Priority Date Filing Date
CN94106578A Expired - Fee Related CN1064502C (zh) 1993-06-30 1994-06-30 用于调制解调器的碳精电极麦克风接口

Country Status (7)

Country Link
US (1) US5559869A (enExample)
JP (1) JPH0758880A (enExample)
KR (1) KR950001464A (enExample)
CN (1) CN1064502C (enExample)
GB (1) GB2287376B (enExample)
MY (1) MY110609A (enExample)
TW (1) TW240366B (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29605537U1 (de) * 1996-03-14 1997-07-10 Elmeg Gmbh Kommunikationstechnik, 31228 Peine Telekommunikationsanlage
US7773715B2 (en) * 2002-09-06 2010-08-10 Rosemount Inc. Two wire transmitter with isolated can output

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4367374A (en) * 1981-02-17 1983-01-04 Novation, Inc. Modem telephone interface circuit
DE3718742A1 (de) * 1987-06-04 1988-12-22 Rutenbeck Wilhelm Gmbh & Co Elektrische schaltungsanordnung fuer die ankopplung von telekommunikationsfunktionseinheiten an das fernsprechnetz
US5001746A (en) * 1988-10-29 1991-03-19 Shirohato Yakuhin Co., Ltd. Transmission control unit

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8528843D0 (en) * 1985-11-22 1985-12-24 British Telecomm Codec
US4825465A (en) * 1987-12-10 1989-04-25 Telecommunication Concepts, Inc. Exclusionary device for coupling plural telephonic devices to a single central office trunk
US4864567A (en) * 1988-05-04 1989-09-05 The United States Of America As Represented By The Secretary Of The Navy High throughput data communication system
US4907267A (en) * 1988-06-16 1990-03-06 Gutzmer Howard A Modem interface device
KR910009672B1 (ko) * 1988-10-14 1991-11-25 삼성전자 주식회사 모뎀의 송출신호 레벨 자동 보상회로 및 방법
JPH03232357A (ja) * 1989-12-27 1991-10-16 Ricoh Denshi Co Ltd 音響カプラ装置の接続装置
US5185789A (en) * 1990-05-30 1993-02-09 Plantronics, Inc. Universal telephone handset interface
US5133006A (en) * 1990-10-31 1992-07-21 Seiscor Technologies Inc. Combination interface circuit for coupling a digital loop carrier telephone system
SG42315A1 (en) * 1990-12-05 1997-08-15 Ibm Coupling device to be connected to a DCE for the connection to a public switched telephone network having a local power supply circuit for allowing the use of the local
DE69332602T2 (de) * 1992-10-14 2003-11-13 Sagem S.A., Paris Modem enthaltender Fernsprecher

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4367374A (en) * 1981-02-17 1983-01-04 Novation, Inc. Modem telephone interface circuit
DE3718742A1 (de) * 1987-06-04 1988-12-22 Rutenbeck Wilhelm Gmbh & Co Elektrische schaltungsanordnung fuer die ankopplung von telekommunikationsfunktionseinheiten an das fernsprechnetz
US5001746A (en) * 1988-10-29 1991-03-19 Shirohato Yakuhin Co., Ltd. Transmission control unit

Also Published As

Publication number Publication date
US5559869A (en) 1996-09-24
GB2287376B (en) 1997-06-04
GB9412973D0 (en) 1994-08-17
CN1101473A (zh) 1995-04-12
JPH0758880A (ja) 1995-03-03
TW240366B (enExample) 1995-02-11
KR950001464A (ko) 1995-01-03
GB2287376A (en) 1995-09-13
MY110609A (en) 1998-08-29

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GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee