GB1358029A - Radio receivers - Google Patents

Radio receivers

Info

Publication number
GB1358029A
GB1358029A GB2124273A GB2124273A GB1358029A GB 1358029 A GB1358029 A GB 1358029A GB 2124273 A GB2124273 A GB 2124273A GB 2124273 A GB2124273 A GB 2124273A GB 1358029 A GB1358029 A GB 1358029A
Authority
GB
United Kingdom
Prior art keywords
decoder
stereophonic
frequency stage
switch
headphones
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
Application number
GB2124273A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB2124273A priority Critical patent/GB1358029A/en
Publication of GB1358029A publication Critical patent/GB1358029A/en
Expired legal-status Critical Current

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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1646—Circuits adapted for the reception of stereophonic signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
    • H04W52/028—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

1358029 Stereophonic radio receivers STANDARD TELEPHONES & CABLES Ltd 4 May 1973 21242/73 Heading H4L A radio receiver comprises a radio-frequency stage 1, a single channel audio-frequency stage 2, a decoder 3 for stereophonic reception, a socket 10 for receiving a plug 8 of a stereophonic sound transducer 9, and a switch arrangement 6, 7 which is operable by insertion of the plug to switch out the audio-frequency stage and to apply operating current to the decoder. In the battery operated portable radio shown insertion of the plug 8 of a pair of stereophonic headphones 9 into a jack 10 not only connects the headphones to the decoder 3 but also, either mechanically or electromagnetically causes switch 6 to open and switch 7 to close cutting off the supply of current to the audio frequency stage and applying it to the decoder 3. Twin loud-speakers may replace the headphones.
GB2124273A 1973-05-04 1973-05-04 Radio receivers Expired GB1358029A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2124273A GB1358029A (en) 1973-05-04 1973-05-04 Radio receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2124273A GB1358029A (en) 1973-05-04 1973-05-04 Radio receivers

Publications (1)

Publication Number Publication Date
GB1358029A true GB1358029A (en) 1974-06-26

Family

ID=10159611

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2124273A Expired GB1358029A (en) 1973-05-04 1973-05-04 Radio receivers

Country Status (1)

Country Link
GB (1) GB1358029A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3116428A1 (en) * 1980-04-25 1982-04-08 Sony Corp STEREO / MONO SELECTOR
WO2002096078A1 (en) * 2001-05-24 2002-11-28 Qualcomm Incorporated Apparatus and method for reducing power consumption in a mobile unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3116428A1 (en) * 1980-04-25 1982-04-08 Sony Corp STEREO / MONO SELECTOR
US4433209A (en) * 1980-04-25 1984-02-21 Sony Corporation Stereo/monaural selecting circuit
WO2002096078A1 (en) * 2001-05-24 2002-11-28 Qualcomm Incorporated Apparatus and method for reducing power consumption in a mobile unit
US7720515B2 (en) 2001-05-24 2010-05-18 Qualcomm Incorporated Apparatus and method for reducing power consumption in a mobile unit

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee