JPS5778238A - Roll call device - Google Patents

Roll call device

Info

Publication number
JPS5778238A
JPS5778238A JP55154156A JP15415680A JPS5778238A JP S5778238 A JPS5778238 A JP S5778238A JP 55154156 A JP55154156 A JP 55154156A JP 15415680 A JP15415680 A JP 15415680A JP S5778238 A JPS5778238 A JP S5778238A
Authority
JP
Japan
Prior art keywords
signals
receiving
equipments
slave radio
call
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
JP55154156A
Other languages
Japanese (ja)
Inventor
Masakata Tsuji
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP55154156A priority Critical patent/JPS5778238A/en
Publication of JPS5778238A publication Critical patent/JPS5778238A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Alarm Systems (AREA)

Abstract

PURPOSE:To call the roll of slave radio equipments easily and accurately, by transmitting a call signal to slave radio equipments from a master radio equipment by making a switch in the master radio equipment from the external and transmitting response signals from slave radio equipments for receiving of this call signal and receiving and displaying these response signals in the master radio equipment. CONSTITUTION:A master radio equipment 1 has a transmitting circuit 3, a receiving circuit 4, and a display device 5; and when a roll call command is given by making a switch 6 by the operation from the external, power is fed from a battery 7 to operate the transmitting circuit 3. Then, different call signals A are transmitted successively to respective slave radio equipments 2 from an tranmission antenna 8. Simultaneously, the receiving circuit 4 is operated and different response signals B from respective slave radio equipments 2 are received through a receiving antenna 9, and display signals (d) corresponding to signals B are outputted. The display device 5 receives signals (d) to emit the light and displays the transmission of response signals B of respective slave radio equipments.
JP55154156A 1980-10-31 1980-10-31 Roll call device Pending JPS5778238A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55154156A JPS5778238A (en) 1980-10-31 1980-10-31 Roll call device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55154156A JPS5778238A (en) 1980-10-31 1980-10-31 Roll call device

Publications (1)

Publication Number Publication Date
JPS5778238A true JPS5778238A (en) 1982-05-15

Family

ID=15578058

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55154156A Pending JPS5778238A (en) 1980-10-31 1980-10-31 Roll call device

Country Status (1)

Country Link
JP (1) JPS5778238A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6226574A (en) * 1985-07-29 1987-02-04 Oki Electric Ind Co Ltd Busy situation grasping system by transponder card
JPS62127142U (en) * 1986-01-31 1987-08-12
JPH06303164A (en) * 1993-04-12 1994-10-28 Daishowa Seiki Co Ltd Device for confirming the number of personnels

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6226574A (en) * 1985-07-29 1987-02-04 Oki Electric Ind Co Ltd Busy situation grasping system by transponder card
JPS62127142U (en) * 1986-01-31 1987-08-12
JPH06303164A (en) * 1993-04-12 1994-10-28 Daishowa Seiki Co Ltd Device for confirming the number of personnels

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