JPS57141148A - Radio telephone set - Google Patents

Radio telephone set

Info

Publication number
JPS57141148A
JPS57141148A JP56025420A JP2542081A JPS57141148A JP S57141148 A JPS57141148 A JP S57141148A JP 56025420 A JP56025420 A JP 56025420A JP 2542081 A JP2542081 A JP 2542081A JP S57141148 A JPS57141148 A JP S57141148A
Authority
JP
Japan
Prior art keywords
telephone set
signal
radio telephone
detected
radio
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
JP56025420A
Other languages
Japanese (ja)
Other versions
JPH0332254B2 (en
Inventor
Shozo Nishimura
Kiyoyuki Tsujimura
Koichi Ito
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
Nippon Telegraph and Telephone Corp
Original Assignee
Toshiba Corp
Nippon Telegraph and Telephone 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, Nippon Telegraph and Telephone Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56025420A priority Critical patent/JPS57141148A/en
Publication of JPS57141148A publication Critical patent/JPS57141148A/en
Publication of JPH0332254B2 publication Critical patent/JPH0332254B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/005—Control of transmission; Equalising

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To make an automatic check on the intensity of a received electric field by at least one of a master device and a telephone set when a radio telephone set is not in use, by providing a controlling means for signals of the master device and radio telephone set and a state display means for the radio telephone set. CONSTITUTION:The signal control part 12 of a master device 10 when enqueued sends a calling signal automatically and the reception level of a transmitted radio wave, modulated by an answer signal to said signal, from a radio telephone set 30 is detected. When the reception level is below a prescribed one, the detection that the telephone set 30 is not within a communication range is performed and if the answer signal from the telephone set 30 is stopped in a calling signal transmission period, that is detected to detect the drop in power voltage of the telephone set 30. The signal control part 33 of the telephone set 30, on the other hand, detects its drop in power voltage and sends an answer signal to the device 10 by receiving the calling signal from the device 10 in this case; when no call signal is sent from the device 10 even a prescribed time later, that is detected to stop the transmission of the answer signal.
JP56025420A 1981-02-25 1981-02-25 Radio telephone set Granted JPS57141148A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56025420A JPS57141148A (en) 1981-02-25 1981-02-25 Radio telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56025420A JPS57141148A (en) 1981-02-25 1981-02-25 Radio telephone set

Publications (2)

Publication Number Publication Date
JPS57141148A true JPS57141148A (en) 1982-09-01
JPH0332254B2 JPH0332254B2 (en) 1991-05-10

Family

ID=12165451

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56025420A Granted JPS57141148A (en) 1981-02-25 1981-02-25 Radio telephone set

Country Status (1)

Country Link
JP (1) JPS57141148A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60124132A (en) * 1983-12-08 1985-07-03 Rohm Co Ltd Codeless telephone set
JPS6135458U (en) * 1984-08-03 1986-03-04 三洋電機株式会社 cordless telephone equipment
JPH0216688U (en) * 1988-07-20 1990-02-02
JPH0431849U (en) * 1990-07-11 1992-03-16
JPH0697874A (en) * 1992-09-10 1994-04-08 Uniden Corp Speech quality report method of cordless telephone set
US5689813A (en) * 1994-05-24 1997-11-18 Nec Corporation Radio apparatus capable of detecting field intensity

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5373002A (en) * 1976-12-13 1978-06-29 Nec Corp Test system of mobile conunication equipment
JPS54124602A (en) * 1978-03-20 1979-09-27 Nec Corp Radiotelephony system
JPS5551088U (en) * 1978-09-27 1980-04-03

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5373002A (en) * 1976-12-13 1978-06-29 Nec Corp Test system of mobile conunication equipment
JPS54124602A (en) * 1978-03-20 1979-09-27 Nec Corp Radiotelephony system
JPS5551088U (en) * 1978-09-27 1980-04-03

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60124132A (en) * 1983-12-08 1985-07-03 Rohm Co Ltd Codeless telephone set
JPS6135458U (en) * 1984-08-03 1986-03-04 三洋電機株式会社 cordless telephone equipment
JPH0216688U (en) * 1988-07-20 1990-02-02
JPH0431849U (en) * 1990-07-11 1992-03-16
JPH0697874A (en) * 1992-09-10 1994-04-08 Uniden Corp Speech quality report method of cordless telephone set
US5689813A (en) * 1994-05-24 1997-11-18 Nec Corporation Radio apparatus capable of detecting field intensity

Also Published As

Publication number Publication date
JPH0332254B2 (en) 1991-05-10

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