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"There is practically no chance communications space satellites will be used to provide better telephone, telegraph, television, or radio service inside the United States."
T. Craven, FCC Commissioner ; 1961
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| Number | Title | Issue Date |
| 6934678 | Device and method for coding speech to be recognized (STBR) at a near end In a mobile wireless communication system automatic speech recognition is performed in a distributed manner using a mobile station based near or front end stage which extracts and vector quantizes recognition feature parameters from frames of an utterance and an inf... | 08/23/2005 |
| 6925092 | Communications system and communication method for data multiplexing A communication station and communication method for effectively multiplexing data into a combined data stream by adding a special header to the combined data packet. The bit positions of this special header indicate the presence of data packets in a data stream in ... | 08/02/2005 |
| 6922797 | Error concealment method of detecting corrupted signal parameters The error concealment method improves the signal quality in transmission systems. The method is used for processing speech signals which have been encoded to speech parameters before transmission via a transmission channel. It allows detection at the receiving end o... | 07/26/2005 |
| 6907015 | Radio communication system A radio communication system has a random access channel for the transmission of data (214) from a secondary station to a primary station. Such a channel is intended for use by secondary stations having data (214) to transmit to a primary station while... | 06/14/2005 |
| 6876691 | Method of the receiver for frequency acquisition in a frequency hopping system A frequency hopping system comprises a transmitting station and a receiving station, both stations storing a frequency hopping sequence comprising a predetermined sequence of N frequencies, where N is an integer greater than 2. In order for the receiving station to ... | 04/05/2005 |
| 6871269 | Data processing system and a method of distributing accesses to memories The present invention relates to a data processing system comprising a processor (100), at least one data memory (132), at least one program memory (134) and a main bus (110), common to the data and program memories and connecting these m... | 03/22/2005 |
| 6859657 | Personal communications apparatus A personal communications apparatus comprises a first part, having a microphone (114), and a second part, having a loudspeaker (118). The first part is adapted to be worn on a user's wrist (202) and the second part is adapted to be worn on their... | 02/22/2005 |
| 6850737 | Antenna direction finding in mobile phones The present invention describes a communication system comprising a primary radio station (PS) and at least one secondary radio station (SS), intended to be in motion (MOT). The secondary radio station has at least one controllable structure (CS) for communicating w... | 02/01/2005 |
| 6836654 | Anti-theft protection for a radiotelephony device A mobile radiotelephony device intended for accommodating a linked user identification module offers protection against theft. The device prevents a normal operation of the device with an unlinked identification module, and permits the normal operation of the device... | 12/28/2004 |
| 6834189 | Cellular communication system handover A portable terminal of a cellular communication system is provided with apparatus for initiating a handover procedure to handover a connection established with one radio termination of a fixed system to another radio termination of the fixed system. The apparatus co... | 12/21/2004 |
| 6804512 | Method for conformance testing of radio communication equipment A method of conformance testing of a secondary station for use in a radio communication system which permits a soft handover process in which the secondary station engages in communication with a plurality of primary stations. The method permits testing the response... | 10/12/2004 |
| 6803816 | Switching power amplifier Switching power amplifiers are used for example in audio applications. Using Class D technology is used to obtain efficient performance. To improve the switching power amplifier further it is proposed to combine a plurality of low-power switching power stages into a... | 10/12/2004 |
| 6795913 | Method for restarting an apparatus if the integrity of data in a memory is lost during micro-outage of power supply This apparatus comprises a battery (15) for supplying a voltage to the apparatus, a power cut detecting circuit (20) for detecting cuts of this supply voltage, a random-access memory (12) fed by this battery (15). A processor (10) ... | 09/21/2004 |
| 6785548 | Method and system for random access packet channel request A radio communication system has a random access channel for the transmission of data (214) from a secondary station to a primary station. Such a channel is intended for use by secondary stations having data (214) to transmit to a primary station while... | 08/31/2004 |
| 6765185 | Computer vision recognition of metallic objects against a poorly contrasting background The contrast between solder balls and substrate of a Ball Grid Array (BGA) as visualized by a camera of a computer vision system is improved sufficiently to enable reliable recognition in the poor contrast situation when the balls are silver colored and the substrat... | 07/20/2004 |
| 6765145 | Protective casing for a display screen and a method and tool for manufacturing such a casing A protective casing (12) for an electronic appliance (10) is of the type which has a shell (18) in which there is produced an opening (20) closed off by a body (22) made from transparent material with a general flat shape, of the t... | 07/20/2004 |
| 6763246 | Portable cordless telephone having an improved ringing device A portable apparatus including an acoustic signal generation device mainly comprises an input unit (IU) adapted to supply a digital input signal (in). The apparatus further comprises a delay line (DL) adapted to receive N samples of the digital input signal, to stor... | 07/13/2004 |
| 6759991 | Antenna arrangement An antenna arrangement comprises a patch conductor (102) supported substantially parallel to a ground plane (104). The patch conductor includes first (106) and second (108) connection points, for connection to radio circuitry, and further... | 07/06/2004 |
| 6754505 | Radio communication system A radio communication system has means for improving power control of a communication channel for the transmission of data after an interruption in the transmission. This is done by adjusting the transmission power immediately after the interruption by an offset fro... | 06/22/2004 |
| 6748198 | Tunable receiver A receiver (REC) is tunable (TUN) to any one of a plurality of channels (CH) by means of channel-select commands (CSC). The receiver tunes to (SRCH) a channel (CH[i]) with a signal (S) having a channel identification (CHIND) that identifies the channel (CH[i]). The ... | 06/08/2004 |
| 6745125 | Method, and related system and apparatus, for providing travel-related information to a mobile communications device The invention provides for a method of providing travel-related information to a mobile communications device (12) comprising determining the opposition of the mobile communications device (12), deriving at least one signal at the mobile communications... | 06/01/2004 |
| 6745036 | Location beacon system A location system for establishing the position of a portable terminal that transmits identity information indicative of the identity of the individual terminal is provided. The portable terminals transmit their identity information at a first predetermined power le... | 06/01/2004 |
| 6738640 | Radio communication system A radio communication system has means for improving power control of a communication channel for the transmission of data after an interruption in the transmission. This is done by applying power control in steps of variable size at the start of a transmission, usi... | 05/18/2004 |
| 6738638 | Radio communication system The invention relates to a radio communication system having a random access packet channel for the transmission of data packets (214) from a secondary station to a primary station. Such a channel is intended for use by secondary stations having packets of da... | 05/18/2004 |
| 6731242 | Method of calculating the position of a mobile radio station based on shortest propagation time In a location method based on distance measurements, the distance between a mobile station and a base station is measured by finding the one-way propagation time between the two radio stations. This one-way propagation time is obtained by sending a location signal a... | 05/04/2004 |
| 6725057 | Personal communications apparatus A personal communications apparatus, for example a cellular telephone handset, has an antenna diversity arrangement comprising first and second antennas (102A, 102B) arranged with their polarisation axes slanted with respect to the median plane of the ... | 04/20/2004 |
| 6721552 | Low power radio network A low power radio network comprises a master radio device (10) having a routing table (20), and a plurality of slave devices (SL1 to SL6), at least one of the slave devices has an inputting device (38, 40) and other of the slave de... | 04/13/2004 |
| 6708037 | Radio communication system A radio communication system has a random access channel for the transmission of data (214) from a secondary station to a primary station. Such a channel is intended for use by secondary stations having data (214) to transmit to a primary station while... | 03/16/2004 |
| 6694515 | Transmission system The transmission system according to the invention employs a transmitter (10) and a receiver (14). The receiver (14) employs a storage device (16) for storing content information (13) within the signal (11) received from the transmitter (10). The receiver... | 02/17/2004 |
| 6690943 | Multiple broadcast facility A broadcast system for communicating multiple simultaneous broadcast messages in a telecommunications system is provided, where the telecommunications system has at least one fixed terminal for communication with one or more portable terminals. The broadc... | 02/10/2004 |
| 6690631 | Clock generation circuit and integrated circuit for reproducing an audio signal comprising such a clock generation circuit A clock generation circuit and device are disclosed for reading/writing information from to/an information carrier. The clock generation circuit includes a frequency divider for generating a first intermediate clock signal from an input clock signal. A fi... | 02/10/2004 |
| 6687233 | Rate detection in direct sequence code division multiple access systems A method of rate detection at a receiving end of a code division multiple access (CDMA) system, in which system the effective data rate is variably selected at the transmitting end from an applicable rate set including a full rate and lower rates, each lo... | 02/03/2004 |
| 6683571 | Multiband microwave antenna Microwave antennas with a dielectric substrate (1) and at least one resonant conductor track structure (31 to 39) are described, which are particularly suitable for mobile dual-band and multiband telecommunication devices such as mobile and cellular telep... | 01/27/2004 |
| 6681202 | Wide band synthesis through extension matrix The invention describes a system that generates a wide band signal (100-7000 Hz) from a telephony band (or narrow band: 300-3400 Hz) speech signal to obtain an extended band speech signal (100-3400 Hz). This technique is particularly advantageous since it... | 01/20/2004 |
| 6680697 | Directional set of antennas fixed on a flexible support The invention relates to a controllable antenna structure (11) comprising a set of antennas (AA) arranged on a flexible support (12). Phase shifts and, in an advantageous embodiment, amplitude gains of electromagnetic current transmitted to these antennas... | 01/20/2004 |
| 6680700 | Miniaturized microwave antenna A miniaturized antenna is described with at least a ceramic substrate (10) and a metallization, particularly designed for use in the high-frequency and microwave ranges. The antenna is characterized in that the metallization is a surface metallization whi... | 01/20/2004 |
| 6668168 | Radio communication system A radio communication system has means for enabling the control channels associated with a data channel transmitting packet data with a low duty cycle to be switched to a dormant state or interrupted entirely. This reduces the excessive overhead that such... | 12/23/2003 |
| 6664891 | Data delivery through portable devices A communications system comprises at least one first portable communications device (12) capable of wireless message transmission and at least one second portable communications device (10) capable of receiving such a message transmission. The first devic... | 12/16/2003 |
| 6657549 | Location finding system and method A method of locating an article or person employs at least one transponding station (TS1) having its own radio identity carded by a person or article in the radio coverage area of a radio system. The system employs a plurality of clusters of spatially sep... | 12/02/2003 |
| 6643817 | Transmission system with adaptive channel encoder and decoder A transmission system comprising a transmitter comprising at least a first channel encoder for encoding source symbols into coded symbols and for setting at least one coding property thereof, and a further channel encoder for encoding the at least one cod... | 11/04/2003 |