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| Patent # | Description |
|---|---|
| US-5,575,003 |
Current mode AGC system for television tuner The tuner-IF system operates with three current mirrors. One current mirror accepts an AGC signal and develops an RF AGC voltage, another current mirror accepts... |
| US-5,575,002 |
Method for muting a radio When a portable radio (110) receives a transmission from a mobile radio (105), the portable radio (110) mutes a speaker volume of the portable radio (110) for a... |
| US-5,575,001 |
Direct broadcasting satellite tuner with a negative feedback and image
compression circuit A dual-input DBS (direct broadcasting satellite) tuner having a negative feedback & image compression circuit. Radio frequency input signal (950 MHZ-2050 MHZ) is... |
| US-5,575,000 |
Automatic broadcasting channel setting system and the method thereof An automatic broadcasting channel setting system and the method thereof for setting automatically a G-code channel, which is different according to respective... |
| US-5,574,999 |
Alert receiver This invention relates to an apparatus and method for receiving and automatically detecting the issuance of emergency, weather or other alert messages broadcast... |
| US-5,574,998 |
Automatic frequency control circuit for control of reference oscillator
in communication apparatus An automatic frequency control device in which a burst frequency is sampled and held on the output side of an IF amplifier, the held frequency is measured and... |
| US-5,574,997 |
Auto-selecting circuit of an intermediate frequency A circuit for automatically selecting an intermediate frequency which includes a single tuner having a plurality of local oscillators. The circuit amplifies a... |
| US-5,574,996 |
Enhanced sleep mode in radiocommunication systems A method and system for providing an enhanced sleep mode for remote units in a radiocommunication system are described. Measurement periodicity for control... |
| US-5,574,995 |
Radio receiver with a high speed and accurate search operation and
method thereof A controller shifts the frequency of the local oscillator with a frequency shift circuit so that as many channels to be scanned as possible will be included... |
| US-5,574,994 |
Method of correcting carrier leak in a transmitter A method of suppressing generation of carrier leak in a transmitter and reducing deterioration of communication quality comprises the steps of outputting DC... |
| US-5,574,993 |
Mobile communication apparatus and method A mobile communication apparatus is provided, in which the linearity during a small output power of a radio-frequency power amplifier can be maintained as during... |
| US-5,574,992 |
Method and apparatus for reducing off-channel interference produced by a
linear transmitter A linear transmitter (100), which utilizes closed loop feedback to maintain its linearity, employs a method for reducing off-channel interference produced by the... |
| US-5,574,991 |
Transmission power control circuit In a transmission power control circuit which performs power amplification of a transmission signal to one of several predetermined levels in response to a... |
| US-5,574,990 |
Predistortion technique for communications systems The problem of noise enhancement is eliminated in communications systems by predistorting the amplitude of the transmitted information signal in a manner which... |
| US-5,574,989 |
Time division multiple access cellular communication system and method
employing base station diversity... A cellular base station (10) in a digital cellular system employs transmitting circuitry in which voice signals (15) are processed at a low frequency level (12)... |
| US-5,574,987 |
Antenna switching apparatus The antenna switch of the present invention switches from a portable radio's internal antenna to an external, vehicle adapter antenna. The second antenna is part... |
| US-5,574,986 |
Telecommunication system, and a first station, a second station, and a
transceiver for use in such a system In a cordless telephony system such as CT1 or CT1.sup.+ there is only a small separation between the transmit and receive frequencies. Consequently, when... |
| US-5,574,985 |
Radio transmitter receiver for operation in plural radio systems having
unequal bands of operating frequencies... A radio device for operation in at least two different radio systems having unequal bands of operating frequencies represented by channels numbers. The device... |
| US-5,574,984 |
Method and apparatus for controlling a power level of a base station of
a wireless communication system After setting a base station to a transmit power level (12) which provides a signal at a subscriber unit having a target quality level, a fading characteristic... |
| US-5,574,983 |
Base station device and mobile station device in mobile communication
system utilizing the site diversity... A base station and a mobile station in a mobile communication system capable of reducing interference among mobile stations and increasing a subscriber capacity... |
| US-5,574,982 |
Method and apparatus for regulating a power level of a transmitted radio
signal A method of and apparatus for stable regulation of transmission power level in a radio system use the carrier-to-interference (C/I) ratio of the communication... |
| US-5,574,981 |
Method and arrangement for measuring the condition of a receiver antenna A method and an arrangement for measuring the condition of a receiver antenna at a base station of a TDMA radio system. The method includes a) transmission of a... |
| US-5,574,980 |
Communication base station system for transmitting data to a movable body A communication base station system for transmitting data to a movable body includes a plurality of transmission sections, each of the transmission sections... |
| US-5,574,979 |
Periodic interference avoidance in a wireless radio frequency
communication system A hierarchical communication system is described whereby periodic interference can be detected and avoided utilizing constituents' computer controllers and sync... |
| US-5,574,978 |
Interference cancellation system and radio system for multiple radios on
a small platform A radio system and interference cancellation system for use with the radio system include a receiving radio and a transmitting radio which are coupled to a... |
| US-5,574,977 |
System and method for providing priority access and channel assignment
in a cellular telecommunication system A system and method of providing users of a mobile cellular telecommunication network, who subscribe to priority service, with priority access to voice or... |
| US-5,574,976 |
System for scanning channels A communication system has a PCC 101 which receives a data stream from a cordless base station 115. The cordless base station 115 transmits an indication in the... |
| US-5,574,975 |
Paging method using power shifted transmitters Transmitters (18) in a two-way radio communication system (10) transmit location inquiries to subscribing pagers (14), each transmission occurring at a given... |
| US-5,574,974 |
Adaptive channel allocation in a mobile communications system In a cellular communication system, a method and apparatus are provided for allocating a channel for use on a connection between a base station and a mobile... |
| US-5,574,973 |
Method of registering/-reassigning a call in a dual mode communication
network Registration operates by sensing (106) the availability of a first communication system. A quality factor of a channel of the system is measured (111). A channel... |
| US-5,574,972 |
Mobile radio system having power level control signalling Cellular mobile radio system having at least two base stations, and at least one mobile unit arranged to communicate with the base stations via a radio medium is... |
| US-5,574,971 |
Mobile communication method and system for optimal selection of radio
zone A mobile communication system is divided into a plurality of large zones, with each large zone being served by a large service area base station. The large zone... |
| US-5,574,970 |
Paging system providing continvous synchronization of simulcast delay A paging system includes a satellite uplink (40) for assembling paging information and transmitting it to a satellite (26). The satellite (26) is then operable... |
| US-5,574,969 |
Method and apparatus for regional cell management in a satellite
communication system In a satellite communication system, communication channels are dynamically assigned in real-time based on actual demand using a regionalized channel assignment... |
| US-5,574,968 |
Satellite cellular communication methods for performing cell-to-cell
handoff Handoff methods perform cell-to-cell handoff between cells of the same satellite and between cells of different satellites. Handoff is initiated by an individual... |
| US-5,574,967 |
Waste energy control and management in power amplifiers An amplifying apparatus for linearly amplifying a desired signal using a pair of coupled non-linear amplifiers is disclosed. The amplifying apparatus comprises a... |
| US-5,574,966 |
Wireless base station architecture A wireless base station architecture that is particularly well-suited for providing audio, video and data services. An exemplary embodiment preferably transmits... |
| US-5,574,965 |
Local communication bus system and apparatuses for use in such a system A number of domestic audio/video apparatuses (10,12,14) are interconnected by a Domestic Digital Bus (16) for the exchange of control information. A User I/O... |
| US-5,574,964 |
Signal distribution system A signal distribution system having a converter with input terminals for receiving signals of varying configurations and an output terminal for transmitting... |
| US-5,574,963 |
Audience measurement during a mute mode A monitoring apparatus which is operable during muting, even though it relies on audio to monitor program signals transmitted by broadcast sources. The... |
| US-5,574,962 |
Method and apparatus for automatically identifying a program including a
sound signal A method and apparatus for automatically identifying a program broadcast by a radio station or by a television channel, or recorded on a medium, by adding an... |
| US-5,574,961 |
Phase-separated material (U) A material for disposition on a surface comprising Fe, Co, or FeCo in the form of small single magnetic domain metallic clusters disposed in an insulating matrix... |
| US-5,574,960 |
Method of separating exothermic elements from high-level radioactive
liquid waste A method of separating exothermic elements of Cs and Sr from a high-level radioactive liquid waste. The method comprises a denitration step wherein formic acid... |
| US-5,574,959 |
Metal casing for semiconductor device having high thermal conductivity
and thermal expansion coefficient A metal casing for a semiconductor device is manufactured by a powder metallurgy injection molding process which uses infiltration. The metal casing includes a... |
| US-5,574,958 |
Hydrogen radical producing apparatus An apparatus for producing hydrogen radicals, includes (a) a pipe having a cross-sectional area decreasing toward one end from the other thereof, the pipe being... |
| US-5,574,957 |
Method of encasing a structure in metal An improved method is disclosed for encasing an object in a shell or layer of outer material. The encased object and the outer material are formed from... |
| US-5,574,956 |
Method and apparatus for treatment sulphidic concentrates A method for oxidizing treatment of molten matte and at the same time directly smelting sulphidic concentrate in a refractory-lined liquid bath reactor, e.g. a... |
| US-5,574,955 |
Method and device for heating powder, and the use of such a device A method and a device for heating powder, especially for preheating powder in view of subsequent compacting, are disclosed. The powder is divided into partial... |
| US-5,574,954 |
Erosion-resistant titanium carbide composites and processes for making
them A composite, a sintered product of the composite, and a process for producing products from this composite. The composite has a very high volummetric proportion... |
| US-5,574,953 |
Storing compressed data in non-contiguous memory A data compression and decompression method for storing compressed data in non-contiguous memory. As the data is compressed and stored in memory, any ... |
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