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GB2344711B - Click-free muting circuit for headset - Google Patents

Click-free muting circuit for headset

Info

Publication number
GB2344711B
GB2344711B GB9827184A GB9827184A GB2344711B GB 2344711 B GB2344711 B GB 2344711B GB 9827184 A GB9827184 A GB 9827184A GB 9827184 A GB9827184 A GB 9827184A GB 2344711 B GB2344711 B GB 2344711B
Authority
GB
United Kingdom
Prior art keywords
headset
click
muting circuit
free
free muting
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 - Lifetime
Application number
GB9827184A
Other versions
GB2344711A (en
GB9827184D0 (en
Inventor
Nikola Gligoric
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.)
Microsemi Semiconductor ULC
Original Assignee
Mitel 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 Mitel Corp filed Critical Mitel Corp
Priority to GB9827184A priority Critical patent/GB2344711B/en
Publication of GB9827184D0 publication Critical patent/GB9827184D0/en
Priority to CA 2291884 priority patent/CA2291884C/en
Priority to US09/459,321 priority patent/US6751316B1/en
Publication of GB2344711A publication Critical patent/GB2344711A/en
Application granted granted Critical
Publication of GB2344711B publication Critical patent/GB2344711B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/16—Modifications for eliminating interference voltages or currents
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)
  • Telephone Function (AREA)
  • Amplifiers (AREA)
GB9827184A 1998-12-11 1998-12-11 Click-free muting circuit for headset Expired - Lifetime GB2344711B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB9827184A GB2344711B (en) 1998-12-11 1998-12-11 Click-free muting circuit for headset
CA 2291884 CA2291884C (en) 1998-12-11 1999-12-09 Click-free muting circuit for headset
US09/459,321 US6751316B1 (en) 1998-12-11 1999-12-10 Click-free muting circuit for headset

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9827184A GB2344711B (en) 1998-12-11 1998-12-11 Click-free muting circuit for headset

Publications (3)

Publication Number Publication Date
GB9827184D0 GB9827184D0 (en) 1999-02-03
GB2344711A GB2344711A (en) 2000-06-14
GB2344711B true GB2344711B (en) 2004-02-25

Family

ID=10843975

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9827184A Expired - Lifetime GB2344711B (en) 1998-12-11 1998-12-11 Click-free muting circuit for headset

Country Status (2)

Country Link
CA (1) CA2291884C (en)
GB (1) GB2344711B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2350256B (en) * 1999-05-17 2001-05-30 Mitel Corp Click free mute switch circuit for telephones
JP7212935B2 (en) * 2019-03-01 2023-01-26 株式会社オーディオテクニカ headset
JP7305162B2 (en) * 2019-06-19 2023-07-10 株式会社オーディオテクニカ sound-electricity converter

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB592917A (en) * 1945-06-08 1947-10-02 Standard Telephones Cables Ltd Improvements in or relating to volume control and mixing arrangements in broadcasting systems and the like
US4448074A (en) * 1981-03-06 1984-05-15 Robert Bosch Gmbh Soft-switching audiometer
EP0202016A2 (en) * 1985-04-12 1986-11-20 Ampex Corporation Multiple input silent audio switch
US5353347A (en) * 1992-02-04 1994-10-04 Acs Communications, Inc. Telephone headset amplifier with battery saver, receive line noise reduction, and click-free mute switching
GB2317783A (en) * 1996-09-20 1998-04-01 Mitel Corp Hookswitch flash detector for a telephone headset
GB2342798A (en) * 1998-10-16 2000-04-19 Mitel Corp Telephone headset click-free muting circuit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB592917A (en) * 1945-06-08 1947-10-02 Standard Telephones Cables Ltd Improvements in or relating to volume control and mixing arrangements in broadcasting systems and the like
US4448074A (en) * 1981-03-06 1984-05-15 Robert Bosch Gmbh Soft-switching audiometer
EP0202016A2 (en) * 1985-04-12 1986-11-20 Ampex Corporation Multiple input silent audio switch
US5353347A (en) * 1992-02-04 1994-10-04 Acs Communications, Inc. Telephone headset amplifier with battery saver, receive line noise reduction, and click-free mute switching
GB2317783A (en) * 1996-09-20 1998-04-01 Mitel Corp Hookswitch flash detector for a telephone headset
GB2342798A (en) * 1998-10-16 2000-04-19 Mitel Corp Telephone headset click-free muting circuit

Also Published As

Publication number Publication date
CA2291884C (en) 2006-01-31
GB2344711A (en) 2000-06-14
GB9827184D0 (en) 1999-02-03
CA2291884A1 (en) 2000-06-11

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Expiry date: 20181210