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7599422 |
Adjustable dual-band link
A communication system utilizing an adjustable link has at least a first data transmission circuit including at least a first communication link circuit. The first communication link circuit has a...
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7466959 |
Apparatus and method for IF switching in a dual-tuner, dual-IF, HD radio and FM/AM radio receiver
In a dual-channel HD radio receiver, when the broadband filter channel is compromised, the broadband channel is inactivated and the narrowband channel is activated. By mixing the signals of the two...
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7450917 |
Power saving transmitter of mobile communication terminal
A transmitter of a mobile communication terminal including a transmission signal processor for receiving a data signal to be transmitted, modulating the data signal into a radio signal, and...
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7450629 |
Adjustable dual-band link
A communication system utilizing an adjustable link has at least a first data transmission circuit including at least a first communication link circuit. The first communication link circuit has a...
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7409461 |
Dynamic file-based routing in a broadband communications system
Methods and systems consistent with the present invention provide broadband subscribers with dynamic, automatic routing information for accessing services offered by a service provider network ( 35...
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7113741 |
Optimized method of transmitting multimedia content
An optimized method for the transmission of multimedia contents between a multimedia content transmitter and a multimedia content receiver in a mobile radio network transmitting a multimedia...
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7110720 |
Local area internet radio receiver/transmitter
In accordance with the invention, radio program content or other audio communications and music are transmitted as digital information through the Internet to an Internet radio receiver/transmitter...
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7061386 |
Air freshener dispenser equipped with an indicator circuit for indicating an incoming call on a nearby cellular telephone
There is described an air freshener dispenser, in particular of the type fittable to vehicle air inlets, which has an indicator circuit for indicating an incoming call on a cellular telephone in...
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7046975 |
Method and system for blind detection of modulation type
The invention relates to a method and a receiver for demodulating a modulation symbol in a communication system without knowledge of the modulation constellation employed in a transmitter to...
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6765486 |
Portable alarm system that interfaces with an individual's personal radio
Apparatus is directed to a personal, portable alarm system that interfaces with an individual's portable radio and remote speaker/microphone to provide the individual with an audible indication...
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6400305 |
Wide band radar detector with three-sweep input stage
A police radar detector detects police radar signals in the X, K and wide Ka police radar bands and rejects interfering Ka band signals that are a higher harmonic of a nuisance source having a...
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6204761 |
Weather alert system
A weather alert system to warn a user when an emergency signal has been broadcast and to simultaneously activate a television or other visual information source and to select a predetermined...
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6115588 |
Radio selective calling receiver having infrared data transmission
A radio selective calling receiver which can prevent reliably a radio section from being affected by a noise generated in a boosting circuit during an infrared-ray communication, whereby a...
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6112075 |
Method of communicating emergency warnings through an existing cellular communication network, and system for communicating such warnings
A method of communicating emergency warnings to persons within a selected in a region served by a cellular communication system that comprises a plurality of transmission stations, includes...
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6072406 |
Traffic light control apparatus for emergency vehicles
A traffic light control apparatus for emergency vehicles for enabling control of a plurality of traffic signal lights disposed at a controlled intersection by an operator of an emergency vehicle...
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6069580 |
Multi-conversion radar detector having increased tuning range and self-calibrating function
The present invention provides a broad band, multi-band radar detector which may be configured so as to have two or three down conversion stages. There are three mixers in the circuit, the second...
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6057765 |
Non-linear junction detector
A non-linear junction detector designed for counter surveillance measures achieves superior performance by using a single circularly polarized antenna to transmit a signal and to receive harmonics...
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6031467 |
Method in a selective call radio for ensuring reception of advertisement messages
An SCR (122) that receives personal messages and corresponding advertisement messages, includes a receiver (304), memory (310), presentation circuit (313) and processor (308). The processor is...
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6021321 |
Selectively called wireless receiver with plural character set storage unit
A wireless unit of a selectively called wireless receiver receives a wireless signal so as to decode the received wireless signal containing a selectively calling signal having a calling number, a...
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5929774 |
Combination pager, organizer and radio
A combination electronic pager, organizer and radio (10) supplied with power by at least one of an external and an internal power supply (56) and connectable to a telephone line (50). The...
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5893056 |
Methods and apparatus for generating noise signals from speech signals
In methods and apparatus for generating an LPC-encoded noise signal from an LPC-encoded speech signal, excitation parameters of the LPC-encoded speech signal for a current frame are randomized upon...
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5749050 |
Automatic emergency alarm reception apparatus using specific frequency
An automatic emergency alarm reception apparatus for a broadcasting receiver which has a radio frequency part and a low frequency part, comprising an ON/OFF switch connected between the radio...
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5697080 |
Method of and apparatus for selecting station in multiplexed broadcast, and receiving system
A method of selecting one of broadcast waves, which are received by a receiving system for receiving the broadcast waves in each of which a sub signal including input sorting information to...
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5697060 |
Portable voice message terminal capable of transmitting pre-set text-based information
A portable wireless voice message transmitter over packet switched network for transmitting a voice message is provided. The transmitter is capable of transmitting a voice message and text-based...
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5600673 |
Circuit for discriminating received signal modulation type
A circuit for discriminating the modulation type of a received signal capable of discriminating the modulation type at high speed. This circuit includes: a clock recovery circuit for recovering a...
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5590407 |
Drive through wireless order taking system
A drive through wireless order taking system includes a base station, and a slave station being connectable with the base station by radio and being movable into and out of a talk lock state. The...
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5577048 |
Method of detecting PTY burst signal
A program type code (PTY) burst signal detection method for a radio data system (RDS) receiver, which can automatically receive an arbitrary information program from another network from the...
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5513385 |
Reception apparatus, signal reproducing apparatus using reception apparatus and control method thereof
A radio receiver continues to demodulate a broadcast signal that was modulated with a baseband signal and a data signal to obtain the data signal after the receiver circuitry unassociated with...
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5448774 |
Intermittent operation receiver
A direct conversion type FSK receiver has an intermittent reception mode and includes a detecting and holding device in a low frequency unit and a gain control device in a high frequency unit. The...
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5438689 |
Radio receiver for a vehicle having improved audibility for speech
A radio receiver having switching-over to traffic announcement wherein the bass and treble frequency responses and the volume are changed to a value which is subjectively optimum for the respective...
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5410749 |
Radio communication device having a microstrip antenna with integral receiver systems
A radio communication device (600) comprises a microstrip antenna (300) having a planar antenna element (302) and a ground plane (314) coupled to the planar antenna element (302). The microstrip...
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5305007 |
Wideband radar detector
A wideband radar detection apparatus includes a signal detection section, high rate signal processing section and a low rate signal processing section. The signal detection section sweeps through a...
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5276909 |
Traffic information broadcast system
A broadcast and reception system provides a segmented broadcast signal for providing regional traffic information and a receiver adapted to receive selected segments of that broadcast. The...
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5247700 |
Cellular telephone with pager
A compact and unitary cellular/pager. The cellular/pager includes a cellular antenna for receiving UHF cellular and paging signals. The cellular/pager also includes a VHF paging antenna. Every...
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5241699 |
Electronic surveillance device detector and method using phase angle differences between two received signals
The disclosed invention detects electronic surveillance devices. Should an electronic surveillance device (a bug) be present in a room, the bug will be detecting sounds with a microphone and...
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5181208 |
Computation-conserving traffic data transmission method and apparatus
In the evaluation of traffic announcements received in digitally encoded form in a data packet, the data packet is decoded continuously, and the traffic announcements are stored in memory after the...
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5164729 |
Police radar warning receiver with auto-mute function
A police radar warning receiver includes an auto-mute feature by which a driver may be alerted to the presence of police radar but without the annoyance of an unnecessarily prolonged audible alarm....
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5134406 |
Long range police radar warning receiver with multiple array averaging
A police radar warning receiver includes a DSP circuit having a correlator, multiple array averager and a peak detector to provide after each sweep of a swept local oscillator respective dynamic...
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5095532 |
Method and apparatus for route-selective reproduction of broadcast traffic announcements
In a method for route-selective reproduction of digitally encoded traffic annoucements broadcast by a transmitter to a vehicle receiver, the announcements being decoded in a decoder of the...
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5077829 |
Radio communication apparatus in which a particular call can be surely informed to a possessor of the apparatus
In a radio communication apparatus in which an audible tone is generated (21-22) in response to reception (15-17, 19) of either a primary or a secondary call signal and stopped by a reset switch...
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5060300 |
Receiver switchable between network supply mode and power-conserving battery supply mode
A radio warning receiver has a battery or accumulator (7) and means (8) for switching over to battery operation mode when network power (6) fails. Battery power is conserved by turning off (9)...
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5054120 |
Receiver for personal radio paging service
A personal radio paging service receiver is housed in a thin, card-shaped housing. The housing houses the circuitry of the receiver and is formed by fixedly sandwiching a frame made as an insulator...
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5049884 |
Battery powered police radar warning receiver
In a police radar warning receiver with a self-contained battery source of supply, battery life may be prolonged by duty cycling the RF front end circuitry of the receiver and, especially, the...
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5046127 |
Transmission path tester for broadcasting
A warning broadcast system features control signal means, preferably digital, for confirming transmission path integrity prior to broadcast of a spoken warning message. A radio receiver (1) in an...
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5020143 |
Vehicular radio receiver with stored detour data
In a vehicular radio receiver having a decoder for decoding digitally encoded received traffic announcements, a memory device for route-specific characteristics and a visual and/or acoustical...
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4984294 |
Radio communications device incorporating channel guard decode and priority channel scanning
A significantly improved scanning method and apparatus is disclosed which allows tone channel guard decode and scan to optimally coexist on the priority channel. In an exemplary embodiment of the...
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4956875 |
Emergency radio alerting and message transmitting system directable to selected classes and numbers of receivers
An emergency radio alerting and warning system comprising an FM transmitter having first and second encoding means, the first encoding means enabling the selection of all receivers in a given...
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4955080 |
Selectively called receiver
This selectively called receiver intermittently receives a frame signal including call information and transmitted through radio communication from a calling end on a battery saving basis and...
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4939521 |
Dual horn, multi-band radar detector
The invention concerns a radar detection device--particularly a radar detection for police radar--which is improved with regard to undesirable microwave emissions therefrom. For the X-band and the...
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4862513 |
Radio receiver with two different traffic information decoders
An autombile radio capable of receiving VHF entertainment programs from a station in which traffic information signals are modulated in a 57 kHz subcarrier is equipped with two decoders for the 57...
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