JPS5550750A - Receiver - Google Patents

Receiver

Info

Publication number
JPS5550750A
JPS5550750A JP12258978A JP12258978A JPS5550750A JP S5550750 A JPS5550750 A JP S5550750A JP 12258978 A JP12258978 A JP 12258978A JP 12258978 A JP12258978 A JP 12258978A JP S5550750 A JPS5550750 A JP S5550750A
Authority
JP
Japan
Prior art keywords
antenna
signal
prestage
buildings
amplifying
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.)
Pending
Application number
JP12258978A
Other languages
Japanese (ja)
Inventor
Hitoshi Kawasaki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12258978A priority Critical patent/JPS5550750A/en
Publication of JPS5550750A publication Critical patent/JPS5550750A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems
    • H04R27/02—Amplifying systems for the deaf

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

PURPOSE:To obtain the radio receiver which can be used for hard of hearing place such as buildings with a simple constitution, by enabling to split the prestage converting the intermediate signal into electromagnetic waves into transmission and the poststage receiving the waves and amplifying and demodulating it. CONSTITUTION:The prestage A amplifies 2 the broadcast signal received at the antenna 1, frequency conversion 3 is made with the signal from the local oscillator 4, and after amplifying at the intermediate frequency amplifier 5, electromagnetic waves are emitted from the antenna 12 by taking the intermediate signal as carrier. At the post stage, the antenna 13 receives the waves, and after amplifying at the intermediate frequency amplifier 14, it is fed to the speaker 8 via the demodulator 6 and audio amplifier 7. Accordingly, the prestage A is placed at the location such as window place of buildings so that sufficient electric field can be obtained and the poststage B is near the place of hard of hearing, thus the intermediate frequency signal emitted with the antenna 12 is received at the antenna 13, the broadcast can be received sufficiently even in the room of buildings in reinforced steel concrete construction.
JP12258978A 1978-10-06 1978-10-06 Receiver Pending JPS5550750A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12258978A JPS5550750A (en) 1978-10-06 1978-10-06 Receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12258978A JPS5550750A (en) 1978-10-06 1978-10-06 Receiver

Publications (1)

Publication Number Publication Date
JPS5550750A true JPS5550750A (en) 1980-04-12

Family

ID=14839655

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12258978A Pending JPS5550750A (en) 1978-10-06 1978-10-06 Receiver

Country Status (1)

Country Link
JP (1) JPS5550750A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1689209A2 (en) * 2005-02-07 2006-08-09 Siemens Audiologische Technik GmbH Data transmitting apparatus for wireless data transmission for hearing-aid and corresponding method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1689209A2 (en) * 2005-02-07 2006-08-09 Siemens Audiologische Technik GmbH Data transmitting apparatus for wireless data transmission for hearing-aid and corresponding method
EP1689209A3 (en) * 2005-02-07 2009-07-01 Siemens Audiologische Technik GmbH Data transmitting apparatus for wireless data transmission for hearing-aid and corresponding method

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