WO1991014332A1 - Radio-telephone a capacite de charge secondaire - Google Patents

Radio-telephone a capacite de charge secondaire Download PDF

Info

Publication number
WO1991014332A1
WO1991014332A1 PCT/US1991/000752 US9100752W WO9114332A1 WO 1991014332 A1 WO1991014332 A1 WO 1991014332A1 US 9100752 W US9100752 W US 9100752W WO 9114332 A1 WO9114332 A1 WO 9114332A1
Authority
WO
WIPO (PCT)
Prior art keywords
selective call
radio telephone
call receiver
receiver
energy source
Prior art date
Application number
PCT/US1991/000752
Other languages
English (en)
Inventor
Michael W. Powell
Sergio Fernandez
John M. Mckee
Original Assignee
Motorola, Inc.
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 Motorola, Inc. filed Critical Motorola, Inc.
Publication of WO1991014332A1 publication Critical patent/WO1991014332A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0254—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets comprising one or a plurality of mechanically detachable modules
    • H04M1/0256—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets comprising one or a plurality of mechanically detachable modules wherein the modules are operable in the detached state, e.g. one module for the user interface and one module for the transceiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0296—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level switching to a backup power supply
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • This invention relates in general to radio telephones and more particularly to a portable radio telephone having a detachable selective call receiver.
  • Communication systems typically use a transmitter that broadcasts a signal for reception by a receiver.
  • the signal that is broadcast by the transmitter is used to convey information to a receiver that is selected by decoding an address corresponding with the targeted receiver.
  • the radio telephone user addresses other radio telephone units or land-line telephones by entering a telephone number that corresponds to the phone system address of the user to be contacted. Once the connection is complete, two way voice or data communications can take place. In the case where data reception is desired, the information must be received via a modem then presented to the user. This is typically not practical when using a portable cellular radio telephone because the modem and data terminal required results in a physical inconvenience (more equipment to carry) and added expense to the user. In existing cellular radio telephone systems, the high cost of initiating or receiving a call at the cellular unit has prevented many potential users from subscribing to cellular services.
  • cellular carriers are hesitant to support changes in their system's operation, signalling protocol, or frequency allocations to support a lower revenue service (paging) in their network. This position relegates the consumer to a decision of paying for an unnecessarily expensive system (cellular radio telephone) or compromising their communication requirements by giving up two way communication capability with the choice of paging.
  • the subscription cost to a paging service is significantly lower that of a cellular radio telephone service.
  • Paging systems typically use a receiver that has at least one unique selective call address. This receiver is commonly referred to as a selective call receiver or pager. When a pager receives and decodes its address, the pager typically alerts the user to the presence of incoming information and operates to present this information. Paging systems are an excellent vehicle for delivering voice, numeric, alphanumeric or coded information to a subscriber.
  • Paging systems are designed to maximize the efficiency of air time by the selection of a coding scheme that allows "battery saving.”
  • Battery saving is typically characterized by the periodic on/off strobing of the decoding and receiving sections of a selective call receiver. This allows the battery life to be extended by reducing the average power consumption of the selective call receiver.
  • Power or battery saving features are of special interest to paging receiver manufacturers. Market pressures keep driving the size of pagers down while energy storage technology (battery) manufacturers have been relatively slow to decrease the size of primary and secondary storage cells used to power pagers.
  • a radio telephone powered by a first energy source and a selective call receiver powered by a second energy source the combination comprising charging means for charging the second energy source with power provided by the first energy source and communication means for transferring information between the radio telephone and the selective call receiver.
  • FIG. 1 is a system diagram of the radio telephone/selective call receiver system in accordance with the preferred embodiment.
  • FIG. 2A is a block diagram of a prior art radio telephone.
  • FIG. 2B is a block diagram of a prior art selective call receiver.
  • FIG. 3A is a block diagram of the radio telephone.
  • FIG. 3B is a block diagram of the selective call receiver.
  • FIG. 4 is an front isometric view of the radio telephone/selective call receiver unit.
  • FIG. 5A is an front isometric view of the articulated portion of the radio telephone/selective call receiver unit showing the selective call receiver attached.
  • FIG. 5B is an front isometric view of the articulated portion of the radio telephone/selective call receiver unit showing the selective call receiver detached.
  • the preferred embodiment of the radio telephone/selective call receiver system comprises a telephone 101 connected by the standard telephone network to a system controller 102 which oversees the operation of the radio frequency transmitter/receiver 103 and encodes and decodes the inbound and outbound addresses into formats that are compatible the the respective land line and . cellular radio telephone addressing requirements.
  • the system controller 102 can also function to encode paging messages for transmission by the radio frequency transmitter/receiver 103.
  • Telephony signals are transmitted to and received from a radio telephone 105 by at least one antenna 104 coupled to the radio frequency transmitter/receiver 103.
  • the radio frequency transmitter/receiver 103 may also be used to transmit paging messages to the selective call receiver 106. Referring to FIG.
  • FIG. 2A a block diagram is shown of the battery 201 powered radio telephone.
  • a radio frequency signal is received or transmitted by the antenna 202.
  • the antenna is coupled to the receiver 203 and transmitter 204 by a diplexer 205.
  • the received signal is routed from the receiver 203 to the control circuitry 206 that recovers any information contained within the received signal. This recovered information is then used to activate the alert 207 (a ringer in the case of a cellular radio telephone) and after answering the call, sustain the connection.
  • the alert 207 a ringer in the case of a cellular radio telephone
  • the user aurally communicates with the other party via the speaker 208 and a microphone 209.
  • Recovered audio from the control circuitry 206 is routed to the speaker which converts electrical energy into acoustical energy thus enabling the user to hear any communications.
  • the microphone 209 is used to convert acoustic energy into electrical energy for use by the control circuitry 206 in modulating the radio frequency carrier produced by the transmitter 204.
  • the user may initiate a call by selecting the proper control 210 and dialing the number of the party to be contacted. When dialed, the number is presented on a display 211 to provide visual feedback for the user.
  • the selective call receiver operates to receive a signal via an antenna 213.
  • the received signal is routed from the antenna 213 to the receiver 214.
  • the receiver 214 demodulates the received signals using conventional techniques and forwards the demodulated signal to the control circuitry 215, which decodes and recovers information contained within the received signal.
  • the selective call receiver presents at least a portion of the information, such as by a display 217, and signals the user via a sensible alert 218 that a message has been received.
  • FIG. 3A a block diagram is shown of the battery 301 powered radio telephone.
  • a radio frequency signal is received or transmitted by the antenna 302.
  • the antenna is coupled to the receiver 303 and transmitter 304 by a diplexer 305.
  • the received signal is routed from the receiver 303 to the control circuitry 306 that recovers any information contained within the received signal. This recovered information is then used to activate the alert 307 (a ringer in the case of a cellular radio telephone) and after answering the call, sustain the connection.
  • the alert 307 a ringer in the case of a cellular radio telephone
  • the user aurally communicates with the other party via the speaker 308 and a microphone 309. Recovered audio from the control circuitry 306 is routed to the speaker which converts electrical energy into acoustical energy thus enabling the user to hear any communications.
  • the microphone 309 is used to convert acoustic energy into electrical energy for use by the control circuitry 306 in modulating the radio frequency carrier produced by the transmitter 304.
  • the user may initiate a call by selecting the proper control 310 and dialing the number of the party to be contacted. When dialed, the number is presented on a display 311 to provide visual feedback for the user.
  • the battery 301 is connected to a regulator 312 that controls the power delivered to the selective call receiver's power source when the radio telephone is coupled with the selective call receiver. Information may be exchanged between the selective call receiver and radio telephone via a communication means.
  • the communication means allows information exchange via an interface 313 that consists of conventional signal generating, encoding, and decoding means (eg.
  • a serial data encoder/decoder e.g. a serial data encoder/decoder
  • a coupling means eg. a physical contact, optical or acoustic transceiver, etc.
  • the selective call receiver operates to receive a signal via an antenna 313.
  • the received signal is routed from the antenna 313 to the receiver 314.
  • the receiver 314 demodulates the received signals using conventional techniques and forwards the demodulated signal to the control circuitry 315, which decodes and recovers information contained within the received signal.
  • the selective call receiver presents at least a portion of the information, such as by a display 317, and signals the user via a sensible alert 318 that a message has been received.
  • the selective call receiver is able to exchange information (communicate) with the radio telephone by using an interface 315 capable of coupling to the interface 313 in the radio telephone.
  • the front isometric view of the radio telephone/selective call receiver shows the antenna, radio telephone portion 402, loudspeaker 403, display 404, control pad 405 including a dialing keypad and associated operational controls, a microphone 406, and a removably detachable selective call receiver 407.
  • Electrical contacts located on the back of the radio telephone portion 402 of the unit are provided for charging the individual power sources contained within the radio telephone and the selective call receiver. Charging is accomplished by folding the lower articulated portion including the selective call receiver upward against the control pad 405 then inserting the folded unit into a charging apparatus (not shown) .
  • a portable power adapter can be coupled into a power jack located on the radio telephone portion 402 of the unit for charging or supplying external power.
  • the front isometric view of the articulated portion of the radio telephone/selective call receiver unit shows the attachment means 501 on which the articulated portion pivots when the complete unit is assembled.
  • the top section 502 of the articulated portion of the radio telephone/selective call receiver unit contains the microphone 503 that is used by the radio telephone.
  • the bottom section 504 comprises a selective call receiver with integral display means 505, function controls 506, and an alert transducer (not shown) .
  • the front isometric view of the articulated portion of the radio telephone/selective call receiver unit shows the selective call receiver 507 detached from the top section 502 of the articulated portion of the radio telephone/selective call receiver unit 508.
  • Mechanical contacts 509 that reside within the retaining slot for the selective call receiver, provide a means for electrically connecting to and coupling electrical power from the radio telephone to contacts (not shown) located on the top of the selective call receiver. This power is used to replenish charge in the selective call receiver's power source.
  • a flap 510 is provided to protect the electrical contacts 509 as well as the rails that form the retaining, slot. This flap 510 folds flat and locks against the retaining area.
  • the means for transferring information 511 is implemented using an optical transmission link to avoid problems associated with mechanical contacts such as corrosion.
  • optical coupling in the shielded environment provided within the retaining slot between the radio telephone and selective call receiver units allows this system a much wider immunity to electromagnetic, acoustic, or mechanical vibration/shock interferences. The end result is a more reliable system.
  • the information that is transferred from the selective call receiver to the radio telephone can contain a phone number that was received in a message by the selective call receiver.
  • This phone number can be used to automatically or by invoking a user controlled function, respond to the individual that sent the original message.
  • the radio telephone In response to the message containing the phone number, the radio telephone generates a signalling sequence recognized by its system as a call initiation.
  • This call means gives the user of the radio telephone/selective call receiver unit the ability to respond to messages containing phone numbers without manually entering the phone number received by the selective call receiver.
  • Another advantage of this implementation of a call means in conjunction with the means for transferring information (or communication means) is that when the selective call receiver is disconnected from the radio telephone and a message is received containing a telephone number, the user can respond to that or any other received messages having either phone numbers or referencing predetermined numbers contained within the memory of the radio telephone when they re-connect the selective call receiver to the radio telephone.
  • the selective call receiver 507 and radio telephone are fully functional as their own independent entities.
  • This feature offers the user additional utility in that they may on occasion choose to carry only the radio telephone or selective call receiver 507.
  • An example of this would be an executive that carries the complete unit in their briefcase would want to be in touch with his office. The executive could detach.the selective call receiver 507 from the radio telephone, store the radio telephone in their locked briefcase, and carry the selective call receiver 507. Because the selective call receiver 507 is much less bulkier than the entire unit and offers a silent alerting (vibratory alert) message storage capability (this feature eliminates audible interruptions and allows the user to defer answering the message) , the user is offered an increased level of convenience.
  • the energy source in the selective call receiver 507 is charged using power that is provided by energy source in the radio telephone.
  • the radio telephone's energy source is coupled to a power regulator that limits the current and voltage to provide approximately a C/10 (read "C over ten", this denotes the capacity in amp « hours of a secondary energy source divided by 10.0) charging rate to the energy source in the selective call receiver 507. This effectively extends the useful life of the selective call receiver's 507 energy source until the time that the power regulator's input power drops below the level required to supply the required charging current and voltage at its output.

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Système à haute fréquence dans lequel, de manière combinée, un radio-téléphone (105, 402) est alimenté par une première source d'énergie (301) et un récepteur d'appel sélectif (106, 407) est alimenté par une seconde source d'énergie (314). Les dispositifs combinés fonctionnent de manière interdépendante comme une unité couplée ou indépendamment comme des unités séparées. La combinaison comprend un régulateur (312) destiné à charger la seconde source d'énergie (314) à l'aide de la puissance fournie par la première source d'énergie (301), ainsi qu'une interface de communication (313, 315) destinée à transférer des informations entre le radio-téléphone et le récepteur d'appel sélectif.
PCT/US1991/000752 1990-03-05 1991-02-05 Radio-telephone a capacite de charge secondaire WO1991014332A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US48912390A 1990-03-05 1990-03-05
US489,123 1990-03-05

Publications (1)

Publication Number Publication Date
WO1991014332A1 true WO1991014332A1 (fr) 1991-09-19

Family

ID=23942505

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1991/000752 WO1991014332A1 (fr) 1990-03-05 1991-02-05 Radio-telephone a capacite de charge secondaire

Country Status (1)

Country Link
WO (1) WO1991014332A1 (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2267013A (en) * 1992-05-13 1993-11-17 Toyo Communication Equip Key arrangement for portable telephones
EP0590494A1 (fr) * 1992-10-01 1994-04-06 Siemens Aktiengesellschaft Téléphone mobile muni d'une fonction de verrouillage
EP0617536A1 (fr) * 1993-03-23 1994-09-28 Alcatel Mobile Communication France Terminal radiotéléphonique portatif compact
EP0674417A2 (fr) * 1994-03-25 1995-09-27 Nec Corporation Appareil auxiliaire d'avertissement d'appel pour un radiotéléphone portatif
GB2290646A (en) * 1994-06-27 1996-01-03 Nec Corp Portable information processing system utilizing a selective call receiver
WO1996028922A1 (fr) * 1995-03-16 1996-09-19 Volta Italia S.P.A. Bloc d'alimentation pour recepteurs d'appels radioelectriques portatifs ou pour postes radiotelephoniques, et notamment pour telephones cellulaires
EP0746131A1 (fr) * 1995-06-03 1996-12-04 Tonami Electronics Corporation Appareil de communication par radio
GB2302232A (en) * 1995-06-13 1997-01-08 Motorola Inc Portable electronic device and method for coupling power thereto
EP0817393A2 (fr) * 1996-07-01 1998-01-07 Motorola Inc. Source d'alimentation portable avec affichage d'image
WO1998000997A2 (fr) * 1996-06-28 1998-01-08 Harris Corporation Perfectionnements d'un systeme polyvalent de telecommunications hertziennes et procede de reaffectation dynamique des frequences
GB2326051A (en) * 1997-06-05 1998-12-09 Motorola Inc Mobile phone having multiple displays
US5930724A (en) * 1996-06-12 1999-07-27 Nec Corporation Electronic apparatus with alarm function
WO2000079771A1 (fr) * 1999-06-18 2000-12-28 Swisscom Mobile Ag Ensemble batterie remplaçable pour telephone mobile
EP1237287A2 (fr) * 2001-02-22 2002-09-04 Kabushiki Kaisha Toshiba Appareil electronique avec fonction d'économie d'énergie et unité d'extension
US6532375B2 (en) * 1998-04-24 2003-03-11 Micron Technology, Inc. Power-saving mode for portable communication devices
GB2416953A (en) * 2004-08-06 2006-02-08 John Timothy Greaves Mobile telephone accommodates headset for recharging
US7085553B1 (en) * 1995-08-31 2006-08-01 Oracle International Corporation Data communication protocols for a mobile-based client-server system over a wireless network

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4563626A (en) * 1983-11-02 1986-01-07 Nikko Co., Ltd. Rechargeable wireless-control toy
EP0212761A2 (fr) * 1985-08-28 1987-03-04 Philips Electronics Uk Limited Système de communications
US4656653A (en) * 1985-04-30 1987-04-07 Nec Corporation Cordless telephone apparatus having means for synchronizing channel scanning of fixed and portable units
EP0263666A2 (fr) * 1986-10-06 1988-04-13 Kabushiki Kaisha Toshiba Appareil téléphonique sans cordon
JPS63224422A (ja) * 1987-03-13 1988-09-19 Hitachi Ltd 移動通信用複合端末

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4563626A (en) * 1983-11-02 1986-01-07 Nikko Co., Ltd. Rechargeable wireless-control toy
US4656653A (en) * 1985-04-30 1987-04-07 Nec Corporation Cordless telephone apparatus having means for synchronizing channel scanning of fixed and portable units
EP0212761A2 (fr) * 1985-08-28 1987-03-04 Philips Electronics Uk Limited Système de communications
EP0263666A2 (fr) * 1986-10-06 1988-04-13 Kabushiki Kaisha Toshiba Appareil téléphonique sans cordon
JPS63224422A (ja) * 1987-03-13 1988-09-19 Hitachi Ltd 移動通信用複合端末

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2267013B (en) * 1992-05-13 1996-01-17 Toyo Communication Equip Portable telephone
GB2267013A (en) * 1992-05-13 1993-11-17 Toyo Communication Equip Key arrangement for portable telephones
EP0590494A1 (fr) * 1992-10-01 1994-04-06 Siemens Aktiengesellschaft Téléphone mobile muni d'une fonction de verrouillage
EP0617536A1 (fr) * 1993-03-23 1994-09-28 Alcatel Mobile Communication France Terminal radiotéléphonique portatif compact
FR2703203A1 (fr) * 1993-03-23 1994-09-30 Alcatel Radiotelephone Terminal radiotéléphonique portatif compact.
US6665550B1 (en) 1993-03-23 2003-12-16 Alcatel Radiotelephone Compact portable mobile telephone having a battery that constitutes virtual all of a flap
EP0674417A2 (fr) * 1994-03-25 1995-09-27 Nec Corporation Appareil auxiliaire d'avertissement d'appel pour un radiotéléphone portatif
EP0674417A3 (fr) * 1994-03-25 1995-11-08 Nec Corp
US5848362A (en) * 1994-03-25 1998-12-08 Nec Corporation Portable alerting unit for alerting a user to call arrival to portable radio apparatus
AU697379B2 (en) * 1994-03-25 1998-10-01 Nec Corporation Portable alerting unit for alerting a user to call arrival to portable radio apparatus
GB2290646B (en) * 1994-06-27 1998-03-11 Nec Corp A portable information processing system utilizing a selective call receiver
GB2290646A (en) * 1994-06-27 1996-01-03 Nec Corp Portable information processing system utilizing a selective call receiver
WO1996028922A1 (fr) * 1995-03-16 1996-09-19 Volta Italia S.P.A. Bloc d'alimentation pour recepteurs d'appels radioelectriques portatifs ou pour postes radiotelephoniques, et notamment pour telephones cellulaires
EP0746131A1 (fr) * 1995-06-03 1996-12-04 Tonami Electronics Corporation Appareil de communication par radio
FR2736794A1 (fr) * 1995-06-13 1997-01-17 Motorola Inc Dispositif electronique portable et procede pour coupler une alimentation en courant electrique a celui-ci
GB2302232A (en) * 1995-06-13 1997-01-08 Motorola Inc Portable electronic device and method for coupling power thereto
US5857148A (en) * 1995-06-13 1999-01-05 Motorola, Inc. Portable electronic device and method for coupling power thereto
GB2302232B (en) * 1995-06-13 1999-06-30 Motorola Inc Portable electronic device and method for coupling power thereto
US6141569A (en) * 1995-06-13 2000-10-31 Motorola, Inc. Portable electronic device and method of coupling power thereto
US7085553B1 (en) * 1995-08-31 2006-08-01 Oracle International Corporation Data communication protocols for a mobile-based client-server system over a wireless network
US5930724A (en) * 1996-06-12 1999-07-27 Nec Corporation Electronic apparatus with alarm function
WO1998000997A3 (fr) * 1996-06-28 1998-07-09 Harris Corp Perfectionnements d'un systeme polyvalent de telecommunications hertziennes et procede de reaffectation dynamique des frequences
WO1998000997A2 (fr) * 1996-06-28 1998-01-08 Harris Corporation Perfectionnements d'un systeme polyvalent de telecommunications hertziennes et procede de reaffectation dynamique des frequences
EP0817393A2 (fr) * 1996-07-01 1998-01-07 Motorola Inc. Source d'alimentation portable avec affichage d'image
EP0817393A3 (fr) * 1996-07-01 2000-09-13 Motorola Inc. Source d'alimentation portable avec affichage d'image
GB2326051A (en) * 1997-06-05 1998-12-09 Motorola Inc Mobile phone having multiple displays
GB2326051B (en) * 1997-06-05 2001-11-14 Motorola Inc Communication device having multiple displays and method of operating the same
SG81928A1 (en) * 1997-06-05 2001-07-24 Motorola Inc Communication device having multiple displays and method of operating the same
US6532375B2 (en) * 1998-04-24 2003-03-11 Micron Technology, Inc. Power-saving mode for portable communication devices
US6735456B2 (en) 1998-04-24 2004-05-11 Micron Technology, Inc. Power-saving mode for portable communication devices
WO2000079771A1 (fr) * 1999-06-18 2000-12-28 Swisscom Mobile Ag Ensemble batterie remplaçable pour telephone mobile
EP1237287A2 (fr) * 2001-02-22 2002-09-04 Kabushiki Kaisha Toshiba Appareil electronique avec fonction d'économie d'énergie et unité d'extension
EP1237287A3 (fr) * 2001-02-22 2005-05-04 Kabushiki Kaisha Toshiba Appareil electronique avec fonction d'économie d'énergie et unité d'extension
US6957082B2 (en) 2001-02-22 2005-10-18 Kabushiki Kaisha Toshiba Electronic device having power saving function and extension unit
GB2416953A (en) * 2004-08-06 2006-02-08 John Timothy Greaves Mobile telephone accommodates headset for recharging

Similar Documents

Publication Publication Date Title
WO1991014332A1 (fr) Radio-telephone a capacite de charge secondaire
AU719578B2 (en) An integrated local communication system
US5924044A (en) Modular communication device and method of providing communications therewith
CN1099819C (zh) 用于短信息业务的智能停靠台
US4807225A (en) Telephone line carrier system
EP0563864A2 (fr) Système de téléphonie sans fil pour communication radio même en espace extérieur
CA1286809C (fr) Methode et circuit de reglage de donnees de numerotation pour telephone sansfil
IL151611A (en) Module specific interface for cellular phones
US6230008B1 (en) Dual fixed/mobile communications system
EP0569314B1 (fr) Equipement pour coupler un ou plusieurs appareils téléphoniques conventionnels à un réseau cellulaire
EP0284325B1 (fr) Radiotéléphone
SE9501977D0 (sv) Power saving mobile data communication system using adaptors
CN201207643Y (zh) 一种调频发射装置
WO1991012673A1 (fr) Radiotelephone possedant un recepteur detachable d'appels selectifs
CN101548534B (zh) 用于使用针对呼叫的文本消息收发型协议延长移动通信设备中的电池电荷寿命的方法和装置
WO1996037078A1 (fr) Systeme de telecommunication pour la reception, la memorisation et la transmission d'une pluralite de signaux electriques vers un reseau sans fil
JPS6094547A (ja) 無線電話方式
ES2227723T3 (es) Unidad de telecomunicaciones para el intercambio de datos sin hilos.
JPH0728264B2 (ja) 無線電話装置
EP0070872A1 (fr) Systeme telephonique sans cordon
JP3050285B2 (ja) 移動電話制御方式
WO1998006183A1 (fr) Telecommande de station mobile
CN210016639U (zh) 语音呼叫客户端、服务端及双向语音呼叫系统
KR100560918B1 (ko) 배터리 잔여 수명을 알려주는 이동통신단말기
KR200202265Y1 (ko) 음성발신기능이 구비된 휴대폰용 이어폰

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CA DK FI JP KR NO

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU NL SE

NENP Non-entry into the national phase

Ref country code: CA