SE9600126L - Mobile phone alarms with low power consumption - Google Patents

Mobile phone alarms with low power consumption

Info

Publication number
SE9600126L
SE9600126L SE9600126A SE9600126A SE9600126L SE 9600126 L SE9600126 L SE 9600126L SE 9600126 A SE9600126 A SE 9600126A SE 9600126 A SE9600126 A SE 9600126A SE 9600126 L SE9600126 L SE 9600126L
Authority
SE
Sweden
Prior art keywords
mobile phone
power consumption
low power
transistor
alarms
Prior art date
Application number
SE9600126A
Other languages
Swedish (sv)
Other versions
SE9600126D0 (en
SE505825C3 (en
SE505825C2 (en
Inventor
Tony Olsson
Original Assignee
Henry Duhs
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 Henry Duhs filed Critical Henry Duhs
Priority to SE9600126A priority Critical patent/SE505825C2/en
Publication of SE9600126D0 publication Critical patent/SE9600126D0/en
Priority to PCT/SE1997/000034 priority patent/WO1997026633A1/en
Priority to AU13263/97A priority patent/AU1326397A/en
Publication of SE9600126L publication Critical patent/SE9600126L/en
Publication of SE505825C3 publication Critical patent/SE505825C3/en
Publication of SE505825C2 publication Critical patent/SE505825C2/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/023—Power management, e.g. system sleep and wake up provisions
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0241—Data exchange details, e.g. data protocol
    • G08B21/0247—System arrangements wherein the alarm criteria uses signal strength
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/24—Reminder alarms, e.g. anti-loss alarms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations

Landscapes

  • General Physics & Mathematics (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Child & Adolescent Psychology (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Emergency Alarm Devices (AREA)
  • Telephone Function (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

A mobile telephone warning device has a battery-operated (3) detector circuit of low current consumption which is comprised of a transistor switch (2-8, C1, C2, R1, R2, R3, D) that is operative in detecting radio frequency signals captured via an antenna (1). The transistor is connected regeneratively via a low-pass filter (5, 7, C1, C2, R1, R2, D), which enables the transistor to self-adjust its operating point and therewith obtain optimal sensitivity.
SE9600126A 1996-01-15 1996-01-15 Mobile phone alarms with low power consumption SE505825C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9600126A SE505825C2 (en) 1996-01-15 1996-01-15 Mobile phone alarms with low power consumption
PCT/SE1997/000034 WO1997026633A1 (en) 1996-01-15 1997-01-14 Mobile telephone warning device
AU13263/97A AU1326397A (en) 1996-01-15 1997-01-14 Mobile telephone warning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9600126A SE505825C2 (en) 1996-01-15 1996-01-15 Mobile phone alarms with low power consumption

Publications (4)

Publication Number Publication Date
SE9600126D0 SE9600126D0 (en) 1996-01-15
SE9600126L true SE9600126L (en) 1997-07-16
SE505825C3 SE505825C3 (en) 1997-10-13
SE505825C2 SE505825C2 (en) 1997-10-13

Family

ID=20401017

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9600126A SE505825C2 (en) 1996-01-15 1996-01-15 Mobile phone alarms with low power consumption

Country Status (3)

Country Link
AU (1) AU1326397A (en)
SE (1) SE505825C2 (en)
WO (1) WO1997026633A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2764144B1 (en) * 1997-06-02 2000-06-02 Raoul Girod APPARATUS FOR FILTERING RADIOTELEPHONES
FR2775409B1 (en) * 1998-02-25 2000-04-14 Patrice Longhi DEVICE AND METHOD FOR DETECTING THE PRESENCE OF A GSM-TYPE CELLULAR TELEPHONE IN FUNCTION
AU1594700A (en) * 1998-11-19 2000-06-13 Soo Jay Louis Phee A safety device
JP6821135B2 (en) * 2019-02-21 2021-01-27 Ｎｌ技研株式会社 Communication equipment

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6486724A (en) * 1987-09-29 1989-03-31 Toshiba Corp Radio telephone system
DK0581416T3 (en) * 1992-07-29 1998-01-26 Yang Ren Guey Alarm to remind a user of a misplaced portable phone
US5327144A (en) * 1993-05-07 1994-07-05 Associated Rt, Inc. Cellular telephone location system
FI2115U1 (en) * 1995-03-21 1995-10-10 Co Pat Oy Varningsanordning Foer mobile telephone system

Also Published As

Publication number Publication date
AU1326397A (en) 1997-08-11
SE9600126D0 (en) 1996-01-15
WO1997026633A1 (en) 1997-07-24
SE505825C3 (en) 1997-10-13
SE505825C2 (en) 1997-10-13

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