Abstract:
PROBLEM TO BE SOLVED: To reduce the power consumption of a communication equipment, especially radio communication equipment which operate in accordance with a time division multiple access(TDMA) method. SOLUTION: A mobile station has an electric circuit configuration 301 so as to operate for reducing power consumption. A synthesizer 318 is tuned so that a receiver 314 can receive a home radio frequency(RF) signal, during a reception slot 504 of a PCH subframe. A controller 310 detects whether or not the incoming subframe has an uplink essential condition and whether data from the home RF signal show the existence of idle condition or not. When the incoming subframe does not have the uplink essential condition, the synthesizer 318 is tuned, so as to measure the signal intensity of two peripheral RF signals during a long and idle slot 506 of the PCH subframe. When an idle condition exists, the electric circuit configuration 301 is turned into a low power mode through a transmission slot 508, a reception slot 512, a long and idle slot 514 and a transmission slot 516.
Abstract:
PROBLEM TO BE SOLVED: To provide an electronic circuit which copes with the necessity of a portable electronic device, further supports it and is especially suitable for low voltage use that accompanies a heavy current pulse requirement. SOLUTION: An electronic circuit 106 of a portable electronic device is provided with energy source interfaces 108 and 114, a load connected to the interfaces 108 and 114, an energy storage circuit having the maximum operation voltage and switch circuits 132 and 140. The circuits 132 and 140 are connected to the energy storage circuit and are connected directly to the interfaces 108 and 114. When a voltage that exceeds the maximum operation voltage exists in the load, the circuits 132 and 140 respond to it and operate so as to switchably separate the energy storage circuit.
Abstract:
PROBLEM TO BE SOLVED: To save power by utilizing a non-CDMA communication path and to send emergency communication onto a CDMA communication path. SOLUTION: A portable communication device 100 also includes a controller 112 coupled to first transceiver circuitry 104 and second transceiver circuitry 116 for providing a deregistration message to the second transceiver circuitry 116 for transmission therefrom in response to determining that the portable communication device 100 is within signal coverage of the first communication path, activating the first transceiver circuitry 104 to send and receive signals on the first communication path, deactivating the second transceiver circuitry 116, and thereafter activating the second transceiver circuitry 116 at times separated by a predetermined time interval to monitor one or more housekeeping channels of the second communication path. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a method and a communication device for a multi-mode communication with multiple autonomous communication systems. SOLUTION: This method and a communication device 102 enable a multi- mode communication with multiple autonomous communication systems that store the first communication system 104 and the second communication system 106. Resources are dedicated to communication with regard to each communication system. In order to minimize product costs, resources, whenever possible, are shared among communications at each mode. In other cases, it is also possible for a system supervisor installed in the communication device to prioritize, to plan and to control communication between this communication device and the autonomous communication system.
Abstract:
PROBLEM TO BE SOLVED: To provide a multimode communication device and a method for operating such a communication device. SOLUTION: A method and a communication device 102 provide multimode communication with multiple autonomous communication systems including a first communication system 104 and a second communication system 106. Resources are dedicated to communication on the respective communication systems. To minimize product cost, resources are shared wherever possible between communication on respective modes. A system supervisor 304 prioritizes, schedules and controls communication between the communication device and the autonomous communication systems. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To input information to the radio communication device by using an operation pattern by detecting a new operation pattern given by a user, allocating a function to the new operation pattern, and storing the new operation pattern in the memory of a radio telephone set. SOLUTION: In a block 300, a microprocessor detects the user making a choice of entering an allocation mode for an operation pattern. In a block 302, the microprocessor displays all functions that the user can allocate operation patterns to. When the user selects one function, the microprocessor detects the choice in a block 304. While the user specifies an operation pattern by moving the telephone set, the microprocessor monitors the movement (acceleration) of the telephone set in a block 306. In a block 310, the microprocessor detects the completion of the operation pattern and in a block 312, the operation pattern is stored in the memory.
Abstract:
PROBLEM TO BE SOLVED: To provide a smaller sized portable communication equipment with flexibility and general-purpose performance by using the modular communication equipment provided with 1st and 2nd modular units each of which is provided with a user interface and connection interface between both the units so as to provide an extended communication function. SOLUTION: The modular communication equipment 102 is made up of a 1st modular unit 106 and a 2nd modular unit 108. The 1st modular unit 106 can receive a paging message even when it is stored in an opening 144 of the 2nd modular unit 108 or singly. The 2nd modular unit 108 has a function of a conventional portable communication equipment and is capable of full duplex voice communication and can receive a paging message in the case of being connected to and storing the 1st modular unit 106 in addition.
Abstract:
A first sequence state storage module ( 20 ) periodically stores a present state ( 22 ) of a long code generator ( 30 ). Following a restoration of power after a power cut condition, or following the termination of any other interruption of the generation of the long code, a sequence recovery module ( 50 ) then provides an updated present state ( 36 ). The updated present state ( 36 ) is based upon a stored present state ( 24 ) and a time value ( 52 ) that is reset whenever the present state ( 22 ) of the long code or other sequence is stored and that is available even when the long code or other sequence is interrupted.
Abstract:
A power amplifying circuit with load adjust for control of adjacent and alternate channel power. A power amplifier amplifies an input signal to produce an amplified signal. A variable impedance network presents different impedances to the output of the power amplifier responsive to a load control signal. A peak-to-average detector provides an indication of a peak-to-average ratio of the amplified signal. A controller coupled to the peak-to-average detector and the variable impedance network produces the load control signal responsive to the indication of the peak-to-average ratio.
Abstract:
An electronic device, such as a radiotelephone, is connectable to a variable-level power source (106). The electronic device includes a rechargeable power source (188) which is repowered responsive to application of operative power generated by the variable-level power source (106). The electronic device provides a constant charge current regulator (168) for converting operative power of a constant voltage into operative power of a constant current to be applied to the rechargeable power source (188) to recharge the rechargeable power source (188). The constant charge current regulator (168) is made of a series connected diode (176) and resistor pair (172). According to a further aspect of the invention, when the rechargeable power source becomes fully recharged, application of the operative power can be reduced by switching (206).