JPS5560350A - Party-subscriber discrimination system of remote communication unit - Google Patents

Party-subscriber discrimination system of remote communication unit

Info

Publication number
JPS5560350A
JPS5560350A JP13303378A JP13303378A JPS5560350A JP S5560350 A JPS5560350 A JP S5560350A JP 13303378 A JP13303378 A JP 13303378A JP 13303378 A JP13303378 A JP 13303378A JP S5560350 A JPS5560350 A JP S5560350A
Authority
JP
Japan
Prior art keywords
subordinate
tone
telephone set
signal
radio wave
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
JP13303378A
Other languages
Japanese (ja)
Other versions
JPS5915225B2 (en
Inventor
Hideo Aizawa
Kenjiro Kuroda
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.)
Alps Alpine Co Ltd
Original Assignee
Alps 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 Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Priority to JP53133033A priority Critical patent/JPS5915225B2/en
Publication of JPS5560350A publication Critical patent/JPS5560350A/en
Publication of JPS5915225B2 publication Critical patent/JPS5915225B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE: To improve S/N while no tone signal is included in a carrier, by providing a communication line between master and subordinate stations by making a subordinate unit oscillate to generate a self-discrimination tone signal for a fixed time while a master unit decodes this signal.
CONSTITUTION: After the handset of a subordinate telepnone set is lifted, a tone discrimination radio wave is sent out from the subordinate telephone set for a certain time. On receiving this radio wave, a master telephone set generates a tone signal at terminal (b). Once discriminating its own subordinate telephone set, tone decoder 11 holds relay 5 inoperative. When arrival of the tone discrimination radio wave ends, relay 5 operates to close switching part 5-1 and also to turn power circuit 100 ON. Consequently, a sound signal from subordinate telephone set is transferred from transformer T2 to terminals A and B, signals from which are also transferred to the subordinate telephone set by way of transmitter 16. As a result, the tone signal is not superposed in a calling period, so that S/N will improve.
COPYRIGHT: (C)1980,JPO&Japio
JP53133033A 1978-10-28 1978-10-28 remote communication equipment Expired JPS5915225B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53133033A JPS5915225B2 (en) 1978-10-28 1978-10-28 remote communication equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53133033A JPS5915225B2 (en) 1978-10-28 1978-10-28 remote communication equipment

Publications (2)

Publication Number Publication Date
JPS5560350A true JPS5560350A (en) 1980-05-07
JPS5915225B2 JPS5915225B2 (en) 1984-04-07

Family

ID=15095229

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53133033A Expired JPS5915225B2 (en) 1978-10-28 1978-10-28 remote communication equipment

Country Status (1)

Country Link
JP (1) JPS5915225B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5939559U (en) * 1982-09-02 1984-03-13 三洋電機株式会社 Wireless telephone charging circuit
JPS60182228A (en) * 1984-02-29 1985-09-17 Nippon Telegr & Teleph Corp <Ntt> Radiotelephony equipment
JPS6160547U (en) * 1984-09-22 1986-04-23
JPS61208347A (en) * 1985-03-12 1986-09-16 Sanyo Electric Co Ltd Cordless telephone set

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53145504A (en) * 1977-05-25 1978-12-18 Fujitsu Ltd Cordless telephone equipment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53145504A (en) * 1977-05-25 1978-12-18 Fujitsu Ltd Cordless telephone equipment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5939559U (en) * 1982-09-02 1984-03-13 三洋電機株式会社 Wireless telephone charging circuit
JPS60182228A (en) * 1984-02-29 1985-09-17 Nippon Telegr & Teleph Corp <Ntt> Radiotelephony equipment
JPS6160547U (en) * 1984-09-22 1986-04-23
JPS61208347A (en) * 1985-03-12 1986-09-16 Sanyo Electric Co Ltd Cordless telephone set

Also Published As

Publication number Publication date
JPS5915225B2 (en) 1984-04-07

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