GB8517100D0 - Communication apparatus - Google Patents

Communication apparatus

Info

Publication number
GB8517100D0
GB8517100D0 GB858517100A GB8517100A GB8517100D0 GB 8517100 D0 GB8517100 D0 GB 8517100D0 GB 858517100 A GB858517100 A GB 858517100A GB 8517100 A GB8517100 A GB 8517100A GB 8517100 D0 GB8517100 D0 GB 8517100D0
Authority
GB
United Kingdom
Prior art keywords
communication apparatus
communication
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.)
Granted
Application number
GB858517100A
Other versions
GB2161342B (en
GB2161342A (en
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.)
Plessey Co Ltd
Original Assignee
Plessey Co Ltd
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 Plessey Co Ltd filed Critical Plessey Co Ltd
Publication of GB8517100D0 publication Critical patent/GB8517100D0/en
Publication of GB2161342A publication Critical patent/GB2161342A/en
Application granted granted Critical
Publication of GB2161342B publication Critical patent/GB2161342B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
GB8517100A 1984-07-07 1985-07-05 Improvements in or relating to communication apparatus Expired GB2161342B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB848417383A GB8417383D0 (en) 1984-07-07 1984-07-07 Communication apparatus

Publications (3)

Publication Number Publication Date
GB8517100D0 true GB8517100D0 (en) 1985-08-14
GB2161342A GB2161342A (en) 1986-01-08
GB2161342B GB2161342B (en) 1989-07-12

Family

ID=10563577

Family Applications (2)

Application Number Title Priority Date Filing Date
GB848417383A Pending GB8417383D0 (en) 1984-07-07 1984-07-07 Communication apparatus
GB8517100A Expired GB2161342B (en) 1984-07-07 1985-07-05 Improvements in or relating to communication apparatus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB848417383A Pending GB8417383D0 (en) 1984-07-07 1984-07-07 Communication apparatus

Country Status (1)

Country Link
GB (2) GB8417383D0 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3355544B2 (en) * 1998-01-20 2002-12-09 三菱電機株式会社 Communication terminal device
US7142811B2 (en) 2001-03-16 2006-11-28 Aura Communications Technology, Inc. Wireless communication over a transducer device
CN104284275B (en) * 2013-07-12 2018-10-09 钰太芯微电子科技（上海）有限公司 A kind of microphone array system of super low noise high amplitude audio capturing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3512088A (en) * 1967-03-14 1970-05-12 Ross Electronics Corp Headphone apparatus having selectable loudspeaker or earpiece sound reproducer
AT275625B (en) * 1967-10-11 1969-10-27 Akg Akustische Kino Geraete Microphone arrangement for use by two speakers
US3705957A (en) * 1970-02-19 1972-12-12 David S Goldsmith Translational,rotational and vertical movement controlled sound source pick-up system
US4468806A (en) * 1983-05-13 1984-08-28 Gaulden Joe L Stero speaker mixer

Also Published As

Publication number Publication date
GB8417383D0 (en) 1984-08-30
GB2161342B (en) 1989-07-12
GB2161342A (en) 1986-01-08

Similar Documents

Publication Publication Date Title
GB2160747B (en) Communication apparatus
GB2172473B (en) Communication apparatus
GB2169174B (en) Data communication apparatus
GB8507787D0 (en) Analizing apparatus
GB2157924B (en) Data communication apparatus
EP0177284A3 (en) Force-detecting apparatus
GB8515624D0 (en) Sheet-dispensing apparatus
GB2162829B (en) Vessel-filling apparatus
GB2178927B (en) Communication apparatus
EP0175456A3 (en) Phototreating apparatus
GB2160395B (en) Receiving apparatus
GB2168667B (en) Feeder-breaker apparatus
GB8410535D0 (en) Apparatus
GB8430273D0 (en) Apparatus
GB8517099D0 (en) Communication apparatus
GB8507388D0 (en) Fish-beheading apparatus
GB8414848D0 (en) Apparatus
GB8431309D0 (en) Food-product-forming apparatus
ZA859678B (en) Telephone apparatus
GB8517100D0 (en) Communication apparatus
GB8512662D0 (en) Tractor-borne apparatus
GB2166311B (en) Receiving apparatus
GB8517305D0 (en) Electro-galvanising apparatus
GB8432049D0 (en) Compost-making apparatus
GB8512951D0 (en) Orthodonitic apparatus

Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930705