JPS54112116A - Multiple-address radio communication system and its receiver - Google Patents

Multiple-address radio communication system and its receiver

Info

Publication number
JPS54112116A
JPS54112116A JP2009878A JP2009878A JPS54112116A JP S54112116 A JPS54112116 A JP S54112116A JP 2009878 A JP2009878 A JP 2009878A JP 2009878 A JP2009878 A JP 2009878A JP S54112116 A JPS54112116 A JP S54112116A
Authority
JP
Japan
Prior art keywords
address
receiver
signal
general
broadcast
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
JP2009878A
Other languages
Japanese (ja)
Inventor
Toru Fujisawa
Rikio Hamaoka
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2009878A priority Critical patent/JPS54112116A/en
Publication of JPS54112116A publication Critical patent/JPS54112116A/en
Pending legal-status Critical Current

Links

Landscapes

  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

PURPOSE: To eliminate the open leakage of important information by allowing the receiver of a system, which transfers information to a specific receiver in a specific area, to receive a general broadcast normally and to receive a multiple-address signal by switching automatically and definitely for multiple address communication.
CONSTITUTION: The multiple-address radio talking system including a multiple- address transmitter and multiple-address receiver is equipped with synchronous communication start signal generating part 4 and multiple-address communication object receiver selective signal generating part 5, which are both connected to alternation switch S1 for multiple-address communication mudulation contents generating a pre-signal and multiple-address signal, at radio transmission section 200. Further, specific receiver 200 is provided with medium-wave and FM-wave broadcast reception parts 16 and 17 which receive general midium waves and radio waves from FM broadcasting station 24, and multiple-address communication object listener selective signal discrimination part 13 connected to multiple-address reception part 13 detecting pre-signals generated by generating parts 4 and 5 in transmission section 200, in addition to receiver-content alternation switch S3 and general-broadcast switch S7 controlled by FF23 which changes general-broadcast reception over to multiple-address signal reception.
COPYRIGHT: (C)1979,JPO&Japio
JP2009878A 1978-02-22 1978-02-22 Multiple-address radio communication system and its receiver Pending JPS54112116A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009878A JPS54112116A (en) 1978-02-22 1978-02-22 Multiple-address radio communication system and its receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009878A JPS54112116A (en) 1978-02-22 1978-02-22 Multiple-address radio communication system and its receiver

Publications (1)

Publication Number Publication Date
JPS54112116A true JPS54112116A (en) 1979-09-01

Family

ID=12017634

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009878A Pending JPS54112116A (en) 1978-02-22 1978-02-22 Multiple-address radio communication system and its receiver

Country Status (1)

Country Link
JP (1) JPS54112116A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57138443U (en) * 1981-02-24 1982-08-30

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57138443U (en) * 1981-02-24 1982-08-30

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