JPS5585150A - Reception system in radio telephone unit - Google Patents

Reception system in radio telephone unit

Info

Publication number
JPS5585150A
JPS5585150A JP15882778A JP15882778A JPS5585150A JP S5585150 A JPS5585150 A JP S5585150A JP 15882778 A JP15882778 A JP 15882778A JP 15882778 A JP15882778 A JP 15882778A JP S5585150 A JPS5585150 A JP S5585150A
Authority
JP
Japan
Prior art keywords
calling signal
detector
power supply
frequency amplifier
detection
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
JP15882778A
Other languages
Japanese (ja)
Inventor
Ryohei Oba
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP15882778A priority Critical patent/JPS5585150A/en
Publication of JPS5585150A publication Critical patent/JPS5585150A/en
Pending 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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE:To save the power consumption at waiting, by feeding power supply only to the circuit part required for the detection of demodulation of calling signal and feeding power also the communication signal demodulating circuit through the detection of calling signal. CONSTITUTION:During the waiting period of the reception unit 6, the output of the high frequency amplifier 8 is connected to the detector 19 via the selection relay switch 18a, and the power supply 15 is connected to only the calling signal demodulation detection circuit consisting of the detector 19, low frequency amplifier 20 and calling signal detector 21 via the relay switch 18b. When calling signal is detected at the detector 21, the relay 18 is operated, the relay switches 18a, 18b are selected, the output of the high frequency amplifier 8 is fed to the mixer 9 and the voltage of the power supply 15 is fed to the mixer 9, local oscillator 10 and demodulator 11. Thus, the power consumption during waiting can remarkably be saved.
JP15882778A 1978-12-22 1978-12-22 Reception system in radio telephone unit Pending JPS5585150A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15882778A JPS5585150A (en) 1978-12-22 1978-12-22 Reception system in radio telephone unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15882778A JPS5585150A (en) 1978-12-22 1978-12-22 Reception system in radio telephone unit

Publications (1)

Publication Number Publication Date
JPS5585150A true JPS5585150A (en) 1980-06-26

Family

ID=15680238

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15882778A Pending JPS5585150A (en) 1978-12-22 1978-12-22 Reception system in radio telephone unit

Country Status (1)

Country Link
JP (1) JPS5585150A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58184830A (en) * 1982-04-22 1983-10-28 Nec Corp Receiver
JPS5991053U (en) * 1982-12-09 1984-06-20 日本マランツ株式会社 Broadcast wave receiving device
US7162214B2 (en) * 2000-11-03 2007-01-09 Vishay Semiconductor Gmbh Energy-saving method for the wireless reception of data modulated on a carrier signal

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58184830A (en) * 1982-04-22 1983-10-28 Nec Corp Receiver
JPS5991053U (en) * 1982-12-09 1984-06-20 日本マランツ株式会社 Broadcast wave receiving device
US7162214B2 (en) * 2000-11-03 2007-01-09 Vishay Semiconductor Gmbh Energy-saving method for the wireless reception of data modulated on a carrier signal
KR100786454B1 (en) * 2000-11-03 2007-12-17 비쉐이 세미컨덕터 게엠베하 Energy saving method for the wireless reception of data modulated to a carrier signal

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