JPS55118241A - Telephone unit - Google Patents

Telephone unit

Info

Publication number
JPS55118241A
JPS55118241A JP2537579A JP2537579A JPS55118241A JP S55118241 A JPS55118241 A JP S55118241A JP 2537579 A JP2537579 A JP 2537579A JP 2537579 A JP2537579 A JP 2537579A JP S55118241 A JPS55118241 A JP S55118241A
Authority
JP
Japan
Prior art keywords
telephone set
transmitters
receivers
main body
set main
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
JP2537579A
Other languages
Japanese (ja)
Inventor
Hisao Iwasaki
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 JP2537579A priority Critical patent/JPS55118241A/en
Publication of JPS55118241A publication Critical patent/JPS55118241A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile

Abstract

PURPOSE:To enable the communication at the same time with the condition that the closeness with the telephone set main body is mitigated for a plurality of people using one telephone set, by the constitution that the telephone set main body and a plurality of transmitters and receivers can be communicated with radio. CONSTITUTION:The telephone set main body 1 transmits the radio frequency signal frequency-modulating the carrier in specific frequency f0 to the transmitters and receivers 2a, 2b, 2c with the antenna 4 by means of communication signal fed on cables. This signal wave is received on the antennas 5a, 5b, 5c at the transmitters and receivers 2a, 2b, 2c and reproduced with the respective internal reception circuit. On the other hand, radio signal waves having specific carrier frequencies f1, f2, f3 are transmitted from the transmitters and receivers 2a, 2b, 2c and the telephone set main body 1 receives the different frequencies f1, f2 and f3.
JP2537579A 1979-03-05 1979-03-05 Telephone unit Pending JPS55118241A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2537579A JPS55118241A (en) 1979-03-05 1979-03-05 Telephone unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2537579A JPS55118241A (en) 1979-03-05 1979-03-05 Telephone unit

Publications (1)

Publication Number Publication Date
JPS55118241A true JPS55118241A (en) 1980-09-11

Family

ID=12164089

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2537579A Pending JPS55118241A (en) 1979-03-05 1979-03-05 Telephone unit

Country Status (1)

Country Link
JP (1) JPS55118241A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6039968A (en) * 1983-08-12 1985-03-02 Tatsuta Electric Wire & Cable Co Ltd Conference telephone set
JPS61162856U (en) * 1985-03-29 1986-10-08
JPS62123890A (en) * 1985-11-25 1987-06-05 Nec Corp Private telephone exchange system
JPH0360254A (en) * 1989-07-28 1991-03-15 Ascii Corp Master/slave radio telephone sets
US5325420A (en) * 1992-09-30 1994-06-28 Fujitsu Limited Cordless phone haaving a plurality of personal stations

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6039968A (en) * 1983-08-12 1985-03-02 Tatsuta Electric Wire & Cable Co Ltd Conference telephone set
JPS61162856U (en) * 1985-03-29 1986-10-08
JPS62123890A (en) * 1985-11-25 1987-06-05 Nec Corp Private telephone exchange system
JPH0360254A (en) * 1989-07-28 1991-03-15 Ascii Corp Master/slave radio telephone sets
US5325420A (en) * 1992-09-30 1994-06-28 Fujitsu Limited Cordless phone haaving a plurality of personal stations

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