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8571509 Dynamic selection of oscillation signal frequency for power converter  
In one embodiment, a method is provided for providing power to a radio-frequency (RF) component capable of operating under multiple communication standards, wherein each standard has a respective...
8447297 Apparatus, and associated method, for facilitating control of control signaling performed by a mobile node operable in a radio communication system  
Apparatus (48), and an associated method, for facilitating effectuation of control over when a mobile node (12) operable in a communication system (10) generates control signaling pursuant to a...
7903762 Multi-band TV tuner and method thereof  
A direct conversion multi-band TV tuner includes: a plurality of RF (radio frequency) paths for processing the RF signal and for generating a plurality of processed RF signals, respectively; and a...
7826815 Dynamic selection of oscillation signal frequency for power converter  
In one embodiment, a method is provided for providing power to a radio-frequency (RF) component capable of operating under multiple communication standards, wherein each standard has a respective...
7469133 Radio frequency power detector  
RF power detector employing an envelope amplifier circuit and a current mirror circuit. The output of the current mirror circuit supplies a bias voltage for biasing the output of the envelope...
7415262 Wireless access point power control  
An access point in a wireless network receives link margin values from associated access points. The access point determines sensitivity values for the associated access points and determines a...
7106232 Analog multiplexer and variable gain amplifier for intermediate frequency applications  
A diversity receiver circuit system (10) including a primary channel (20) and a diversity channel (22), where analog input signals are converted to differential signals in both channels (20, 22)....
6873837 Emergency reporting system and terminal apparatus therein  
An emergency reporting apparatus for a vehicle includes a microphone, a loudspeaker, and a handsfree system circuit. Handsfree two-way speech communication with an emergency report receiving...
6799028 Mobile radio receiver with integrated broadcast receiver that fills broadcast gaps during mobile band communication  
In order to simplify the circuitry upon integration of a mobile radio receiver in a terminal for mobile communication, the invention proposes the use of a receiving section in which at least one...
RE37000 Method of controlling remote control electronic apparatus coupled to a network and a remote control electronic apparatus to be coupled to a network  
A method of controlling remote control electronic apparatus coupled to a network and a remote control electronic apparatus to be coupled to a network are disclosed. Each remote control electronic...
6140849 Active double-balanced mixer with embedded linearization amplifiers  
A linearized double-balanced active mixer circuit is described, including a first input for a local oscillator (LO), a second input for an intermediate frequency (IF) signal, and an output for a...
5900829 Method of and apparatus for detecting key actuations  
An electronic device (100) includes at least L keys (114) and a processor (506) having at least M inputs (600). Upon actuation, each one of the at least L keys (114) toggles a unique combination...
5901349 Mixer device with image frequency rejection  
The device forms first and second signals by mixing the input radio signal with two respective quadrature waves of frequency fO. An algebraic sum of these two signals is phase-shifted by ±45° or...
5901344 Method and apparatus for improved zero intermediate frequency receiver latency  
A transceiver (10) in a first embodiment includes a zero intermediate frequency (ZIF) receiver (11), which achieves high throughput operation by reducing receiver latency time due to receiver...
5901361 Mobile communications apparatus uplink message transmission of battery output level information  
A mobile communications apparatus monitors the power level of its internal battery power supply, and reports the measured power information on a periodic basis to a serving network. These reports...
5901350 Low distortion large swing frequency down coverter filter amplifier circuit  
A semiconductor integrated circuit to provide a low distortion, large swing intermediate frequency wherein the circuit includes the function of mixing, filtering, and amplification on a single...
5898913 Plural band converter  
A frequency converter employs a balanced bridge mixer of switching elements such as field-effect transistors (FETs) with a local oscillator supplying control signals to gate terminals of the...
5898914 Method of generating a ringing signal in a satellite communications system  
A ringing signal is generated at one of a plurality of terminal stations in a SCPC-DAMA (single channel per carrier demand assigned multiple access) satellite communications system. The satellite...
5897042 Talking backpack  
A combination backpack and audio cassette system wherein the audio cassette system, separately contained, is mounted to the back panel of the backpack. The contained audio cassette system is...
5896564 Mechanism for attaching and detaching a portable cordless telephone in a motor vehicle  
There is provided a mechanism for attaching and detaching a portable cordless telephone in a motor vehicle, the mechanism comprising: a holder capable of holding the portable cordless telephone...
5895016 Multi-use radio installation kit  
A radio installation kit for automobiles comprising a frame with rearward facing walls, mounting plates which snap onto the frame and mounting brackets formed on the plates at predetermined...
5896567 Telephone system having disconnection information outputting function  
A wireless telephone system including a communication controlling unit for performing the line connection and line disconnection between personal stations, a timer setting unit for setting a timer...
5892447 Portable cellular alert system  
The claimed invention comprises a personal warning system including a mobile transmitting device and a mobile receiving device including a receiver which receives signals transmitted by the...
5893029 Baseband phase-locked direct conversion receiver with frequency offset  
To generate a fixed frequency offset in a direct conversion receiver (200) a phase ramp representing the frequency offset if generated. This phase ramp is combined with the demodulated phase...
5892455 Analog wrist watch and pager providing message display on cover glass  
An LCD is integrated with the cover glass of a wrist watch radio paging receiver which indicates the time data with a dial plate and hands, and a message is displayed on the cover glass by...
5893030 Dual-function double balanced mixer circuit  
A circuit for connecting multiple signal paths within a multi-mode communication device includes a double balanced mixer circuit selectively functioning as a modulation switch during an unbalanced...
5893025 CATV converter for receiving both analog and digital signals  
The present invention aims to provide a CATV converter which can receive both of analog and digital signals. The CATV converter comprises a second mixer (10) coupled with a first filter (13) which...
5893028 Intermediate frequency gain stage with rectifier  
An intermediate frequency gain and rectifying stage for an IF system is implemented with a high swing folded-casecode structure terminated into a current-mirror load. The signal-path outputs are...
5890060 Micro-wave mixing circuit and down-flow converter using the same  
A micro-wave mixing circuit produces producing a stable frequency conversion characteristic against a dispersion of output voltage of a local oscillation signal tapped off from a local oscillator....
5890058 Electronic circuit and filter device using same  
In an FDNR type active filter fabricated on an integrated circuit, an FDNR circuit is provided wherein one ends of a first capacitor and an impedance element are connected to an inverted input of...
5890077 Mobile terminal selectively operable with a booster and mobile communication system  
In a first aspect of the invention, when it is expected to disconnect a booster during a call, the station class mark is changed to that applicable when a portable telephone is used as an...
5887286 Ear protector  
A child ear protector is provided including a pair of ear enclosures each defining an interior space and a free peripheral edge. Each enclosure has an elastomeric gasket formed about the free...
5890071 Radio telephone set with broadcast receiving functions  
In response to a reception of a incoming signal by a receiver during operation of a turner circuit, a controller shifts a changeover switch and at the same time cause a ringing tone generator to...
5889824 Intermittent receiving apparatus capable of reducing current consumption  
In an intermittent receiving apparatus (10) for intermittently receiving a carrier signal having a carrier frequency (fR) and carrying data as an intermittent received carrier signal so as to...
5890061 Vehicular emergency message system with call restriction defeating  
A vehicle user can request emergency or roadside assistance from a response center by activating a button in the vehicle. The global positioning system is used to continuously store the vehicle...
5890074 Modular unit headset  
A modular unit having a telecommunications component, a switching circuit, and a headset link is adapted for connection with a host electronic device. The headset link of the modular unit...
5889509 Communications terminal apparatus and display method thereof  
A communications terminal apparatus and display method thereof to make the user aware of the operational state of a portable telephone thus preventing the malfunctions of and damages caused by the...
5890073 Mobile terminal capable of sending communication mode signals and a method thereof  
A mobile terminal communicable with a public switched network through a stationary radio station over a radio channel includes a telephone network effecting audible, telephonic conversation over...
5886952 Alarm clock remote control system  
An Alarm Clock Remote Control System for assisting an individual in operating an alarm clock without requiring the individual to be removed from a bed. The device includes an encasement, a display...
5886560 Analog multiplier operable on a low supply voltage  
A multiplier includes first through fourth transistors (Q1, Q2, Q3, Q4) and a current source (I0) The first transistor has a base electrode connected to a first input terminal (T1) and a collector...
5886547 Circuit and method of controlling mixer linearity  
An integrated receiver circuit (10) has a first amplifier (12) coupled for receiving a radio frequency (RFIN) input signal. A mixer (16) has an RF input coupled to an output of the first...
5884772 Electronic device having multiple user interface configurations  
A portable electronic device (100) includes a housing cover (110) having a faceplate location (145), an electronic circuit (115), and a first faceplate (140). The location comprises a generic...
5887248 Audible tone signal service apparatus and method of a digital mobile services switching center  
An audible tone signal service apparatus of the digital mobile services switching center designs a separate board which transmits audible signal tone only to simplify a hard ware construction of a...
5884156 Portable communication device  
A portable communication device capable of operating in a telephony mode and in a dispatch mode is disclosed. The device includes a proximity sensor and a first speaker mounted on a front panel...
5883859 Alarm clock housing with lockable keypad enclosure  
An alarm clock housing with lockable keypad enclosure that includes a time/alarm entry keypad. The lockable keypad enclosure is lockable with an enclosure cover combination locking mechanism that...
5884155 Pager with coin holder and/or storage compartment  
A combination of a pager with a casing having a first portion releasably secured to a second portion together defining a cavity therein serving as a compartment for storage of articles of...
5884154 Low noise mixer circuit having passive inductor elements  
A mixer circuit is provided which incorporates inductive elements for low voltage applications. The circuit consists of a balanced amplifier and a switch composed of transistor pairs driven by a...
5884199 Portable wireless receiver  
A portable wireless receiver is provided which has a position locating function through reception of GPS satellite radio waves. The portable wireless receiver has a speaker/microphone unit...
5884186 Portable radio apparatus equipped with function to display received message information and information process system used for portable radio apparatus  
A portable radio apparatus comprises: a receiving unit for receiving message information transmitted by a radio wave; input/output terminals for transmitting/receiving information between the...
5884162 1×N communication system for private branch exchange  
A press-talk trunk is a communication system receives press-talk signals from voice terminals having press-talk switches. In one aspect of the invention, the press-talk trunk is scanned by a...

Matches 1 - 50 out of 142 1 2 3 >