JPS57166742A - Emergency alarm receiver - Google Patents

Emergency alarm receiver

Info

Publication number
JPS57166742A
JPS57166742A JP5224881A JP5224881A JPS57166742A JP S57166742 A JPS57166742 A JP S57166742A JP 5224881 A JP5224881 A JP 5224881A JP 5224881 A JP5224881 A JP 5224881A JP S57166742 A JPS57166742 A JP S57166742A
Authority
JP
Japan
Prior art keywords
level
microcomputer
field intensity
carrier
optimum receiving
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
JP5224881A
Other languages
Japanese (ja)
Other versions
JPS6328370B2 (en
Inventor
Koichi Nakano
Hiromi Juso
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP5224881A priority Critical patent/JPS57166742A/en
Publication of JPS57166742A publication Critical patent/JPS57166742A/en
Publication of JPS6328370B2 publication Critical patent/JPS6328370B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE:To receive an emergency broadcasting always in optimum receiving status by connecting a means to detect the existence or absence of the emergency broadcasting automatically. CONSTITUTION:When an automatic search starting switch 13 is turned on to send an command to a microcomputer 10 at the time of poor receiving status, the microcomputer 10 starts to search automatically. Namely, the microcomputer 10 compares the carrier wave level detected by a field intensity detecting circuit 14 and an A/D converter 15 with the optimum receiving field intensity and, when the carrier level is more than a prescribed carrier level, a demodulated signal DC level detecting circuit 16 detects the DC level of a demodulated output and a level comparator 17 compares the DC level with a previously set noise level. The received wave carrier level is written in a memory as the new optimum receiving field intensity and the receiving frequency under the newly set up electric field is written in the memory as the optimum receiving frequency.
JP5224881A 1981-04-06 1981-04-06 Emergency alarm receiver Granted JPS57166742A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5224881A JPS57166742A (en) 1981-04-06 1981-04-06 Emergency alarm receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5224881A JPS57166742A (en) 1981-04-06 1981-04-06 Emergency alarm receiver

Publications (2)

Publication Number Publication Date
JPS57166742A true JPS57166742A (en) 1982-10-14
JPS6328370B2 JPS6328370B2 (en) 1988-06-08

Family

ID=12909424

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5224881A Granted JPS57166742A (en) 1981-04-06 1981-04-06 Emergency alarm receiver

Country Status (1)

Country Link
JP (1) JPS57166742A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007525057A (en) * 2003-03-31 2007-08-30 トムソン ライセンシング Method for controlling a device having an emergency alert function

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007525057A (en) * 2003-03-31 2007-08-30 トムソン ライセンシング Method for controlling a device having an emergency alert function

Also Published As

Publication number Publication date
JPS6328370B2 (en) 1988-06-08

Similar Documents

Publication Publication Date Title
GB2199467B (en) Output power control circuit for a mobile radio apparatus
SE8103440L (en) RADIO CONVERSION CONTROL SYSTEM
EP0149546A3 (en) Receiver for power line communication systems
TW264589B (en) Switching circuit of BS converter capable of assuring a high sensitivity
ES8704686A1 (en) Circuit for producing a criterion for reception.
JPS57166742A (en) Emergency alarm receiver
SE8303049L (en) PERSONAL RECEIVER SELECTIVE CHANGE BETWEEN RECEIVING CALL NUMBER AND RECEIVING MESSAGE
JPS57125550A (en) Data collecting system
CA2166229A1 (en) Demodulator Control System and a Receiver Capable of Quickly Acquiring a Desired Carrier Wave
JPS57141148A (en) Radio telephone set
JPS57181235A (en) Output switching device of radio equipment
JPS5560351A (en) Data collection system
KR900002001Y1 (en) Switching circuit for the broadcasting of emergency alarm
JPS6481535A (en) Communication equipment
JPS57194690A (en) Terminal equipment in catv system
JPS56134842A (en) Alarm broadcasting receiver
JPS56110316A (en) Fixed gain switching circuit
JPS5447209A (en) Automatic train controller
JPS57187672A (en) Direction finder
JPS6455916A (en) Control method for rds receiver
JPS558181A (en) Channel program device
JPS5261420A (en) Receiver
GB1481884A (en) Burglar alarm
JPS56156091A (en) Remote control method
JPS5450940A (en) Load controller for indoor power line carrier