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Patent Searching and Data


Matches 251 - 300 out of 9,845

Document Document Title
WO/2003/063160A1
The invention relates to method and unit for substracting quanti zation noise from a pulse code modulated PCM signal being segmented into frames. For achieving this it is proposed to first calculate for each frame of said PCM signal a qu...  
WO/2003/061134A1
A direct down conversion receiver (100) includes a signal filter (105) having a selectable frequency response for receiving an input signal (102). The filtered signal is amplified by a variable gain amplifier (112), and the amplified sig...  
WO/2003/058852A1
A method for preventing a stall condition in a terminal of a mobile communications system uses a timer to limit how long data blocks are stored in a reordering buffer. The method includes receiving a data block over a wireless link, dete...  
WO/2003/049359A1
The present invention provides methods and apparatus to protect user privacy while accessing information in public places, using both public and personal devices (109, 110, 111). This is achieved by employing a mechanism that prevents pr...  
WO/2003/046888A1
The invention relates to a method of decoding a delta modulated signal which has been encoded using an adaptively varied encoding step size. The decoding method comprises receiving the delta modulated signal over an erroneous channel, de...  
WO2002041545A9
A system and method for synchronizing internal clocks of receiving stations of a locating system are described. A beacon transmits reference data packets at a known position. A first arrival time is compared to a second arrival time to d...  
WO2003001710A3
A communication system (1) is described in a possible embodiment comprising a main transmitter (TR) having two or more series arrangements of at least a digital signal processor (6) and a down sampler (7) coupled to the band pass filter ...  
WO/2003/036886A2
A mobile wireless terminal (MWT) (206) receives IP packets (404) destined for a ground network (234) in a predetermined sequence order. The MWT (206) fragments each of the IP packets into many smaller packet fragments (406), appends iden...  
WO/2003/034732A1
The invention concerns a protocol for remote management, from a broadcasting center (E), of access control to scrambled data, through a descrambling terminal (T) and an access control card or module provided with a security processor (PS...  
WO2002084320A3
A method and apparatus for increasing the potential digital bit data rate potential for communication-to-be-added to Loran-C radio-frequency pulse navigation transmitters and the like without affecting the navigation capability and integ...  
WO/2003/032511A1
The present invention, relevant to a procedure for modulating/demodulating with code-select/code-division multiple access, provides a technique of code-division multiple-access, in which information channels in number of N+1 are assigned...  
WO/2003/030387A1
The present invention provides apparatus and method that mitigate the noise incurred on a wireless communications path between an encoder and a decoder of a wireless audio noise reduction system that utilizes frequency modulation (FM). T...  
WO/2003/030581A2
A system and method involve transceiving successive first and second synchronization signals defining endpoints of a frame. A digital signal is transceived by a modulating time interval between portions of the first and second synchroniz...  
WO2002065894A3
Endocardial pressure measurement devices, systems and methods for effective treatment of congestive heart failure and its underlying causes, in addition to other clinical applications. A representative device includes an implantable pres...  
WO/2003/026242A1
A method and circuitry for implementing digital multi-channel demodulation circuits (figs 2 and 6). More particularly, embodiments of the present invention provide a digital multi-channel demodulator circuit (250, 650). The demodulator i...  
WO/2003/026260A1
The invention relates to the control of access of various appliances (4A to 4G) of an installation (1) which are connected to a telephone line (2). The appliances have a priority level. There is provision for the dispatching, on the requ...  
WO2000031719A3
The quality of comfort noise generated by a speech decoder (93) during non-speech periods is improved by modifying (30, 75) comfort noise parameter values (33) normally used to generate the comfort noise. The comfort noise parameter valu...  
WO/2003/021793A1
It is possible to easily realize a high−performance encoding in which design flexibility is significantly increased. In a data transmission&sol reception system, a transmission apparatus (10) includes converters (110, 111, 112) for con...  
WO2002041504A3
The location of unmodified wireless assets in a wireless communication network may be identified using time differences of arrivals of a communication sequence at different network receivers. Time-stamping devices may include correlator ...  
WO/2003/014812A2
Polarization modulator devices (300) can be formed to take advantage of multi-layered semiconductor structures. High quality epitaxial layers (26) of monocrystalline materials can be grown overlying monocrystalline substrates (22) such a...  
WO/2003/013090A1
A method and apparatus for encoding and decoding signals using code position modulation (CPM) in a communication system. The encoding method includes storing an N-chip pseudo-random noise sequence, such as an m-sequence, in a circular sh...  
WO2002041651A3
The location of unmodified wireless assets in a wireless communication network may be identified using time differences of arrivals of a communication sequence at different network receivers. Time-stamping devices may include correlator ...  
WO/2003/010929A1
The invention relates to a method and system for transmitting data packets, which in addition to useful information (PL), contain an item of information concerning the temporal sequence thereof, from a first data network into a second da...  
WO2002041545A3
A system and method for synchronizing internal clocks of receiving stations of a locating system are described. A beacon transmits reference data packets at a known position. A first arrival time is compared to a second arrival time to d...  
WO/2003/009589A1
A precision timing generator (415, figure 4) includes a combiner (412) that provides a timing signal by combining a coarse timing signal (428) and a fine timing signal (429) derived from a phase-shifted sinusoidal signal (508) that has a...  
WO/2003/003601A1
A method and an apparatus for transmitting an optical signal in an optical CDMA system. The system comprises transceivers (101 to 104) capable of sending and receiving optical signal sent and received through an optical fibre network. Th...  
WO/2003/001710A2
A communication system (1) is described in a possible embodiment comprising a main transmitter (TR) having two or more series arrangements of at least a digital signal processor (6) and a down sampler (7) coupled to the band pass filter ...  
WO/2003/001709A1
A transmission&sol reception apparatus capable of decoding a high−quality sound. A cellular telephone 1011 encodes sound data and outputs the encoded sound data. Furthermore, the cellular telephone 1011 learns quality improving data to...  
WO2002065894A8
Endocardial pressure measurement devices, systems and methods for the effective treatment of congestive heart failure and its underlying causes, in addition to other clinical applications.  
WO/2002/098156A1
The present invention proposes a method for enabling a subscriber entity to actively communicate in a communication network, a subscriber entity being identified by at least one assigned subscriber identity (IMSI, MSISDN), said communica...  
WO2001020786A9
An encoder uses an input file of data and a key to produce a group of output symbols. A group of output symbols with key I is generated by determining a weight, W(I), for the group of output symbols to be generated, selecting W(I) of the...  
WO2002065458A3
The disclosed embodiments provide a method and apparatus for interoperability between CTX and DTX communications systems during transmissions of silence or background noise. Continuous eight rate encoded noise frames are translated to di...  
WO/2002/091588A1
A sub-band adaptive differential pulse code modulation/encoding apparatus includes means (102, 103, 104, 105) having a predetermined asymmetric impulse response for receiving an audio signal and band-dividing the received audio signal in...  
WO/2002/084320A2
A method and apparatus for increasing the potential digital bit data rate potential for communication-to-be-added to Loran-C radio-frequency pulse navigation transmitters and the like without affecting the navigation capability and integ...  
WO/2002/082425A1
In a speech coding system with an encoder and a decoder cooperating with said encoder, the speech encoder comprises a pre-processor and an ADPCM encoder with a quantizer and step-size adaptation means, while the speech decoder comprises ...  
WO/2002/082426A1
In a speech coding system with a speech encoder and a speech decoder cooperating with said speech encoder, the speech encoder comprises a pre-processor and an ADPCM (adaptive differential pulse code modulation) encoder with a quantizer a...  
WO/2002/080370A2
The invention relates to a method and a device for the digital transmission of analogue signals, whereby an oversampling in analogue-digital and digital-analogue converters is carried out. A digital-analogue conversion is thus carried ou...  
WO2002037768A8
An initiator has logical devices (A,B,C). A target to obtain services from the initiator designates the ID of provided services and the directory ID indicating a directory where the information concerning a logical device is stored, and ...  
WO/2002/071614A1
A frequency synthesizer (200) is provided that allows for a half-cycle division of the synthesized frequency. In a conventional sigma-delta fractional-N frequency synthesizer, a controllable divider is configured to allow for the divisio...  
WO2002009380A3
A digital data modulator (Fig. 1) is coupled to a source (IN) of a digital data signal. An encoder (10) encodes the digital data using a variable pulse width code. A pulse signal generator (20, 25) generates pulses representing edges of ...  
WO2000024120A9
The present invention includes a system and method for ensuring reception of a communications signal. A modulating baseband signal with desired information is accepted, and a plurality of redundant spectrums is generated. Each redundant ...  
WO2000035122A9
A demultiplexer (402) for channel interleaving in communications systems with multiple carriers and/or transmitter diversity includes a distribution module (700) that distributes data bits in succession to successive transmitter antennas...  
WO/2002/065894A2
Endocardial pressure measurement devices, systems and methods for effective treatment of congestive heart failure and its underlying causes, in addition to other clinical applications. A representative device includes an implantable pres...  
WO2002007061A3
A speech communication system and method that has an improved way of handling information lost during transmission from the encoder to the decoder. More specifically, the improved speech communication system more accurately recovers from...  
WO/2002/065787A1
When TDM links are switched from the original TDM network to the destination (e.g. VoIP) via a data network acting as a backbone (ATM or IP), the transitions between theTDM network and the data network are made via media gateways. As for...  
WO/2002/065458A2
The disclosed embodiments provide a method and apparatus for interoperability between CTX and DTX communications systems during transmissions of silence or background noise. Continuous eight rate encoded noise frames are translated to di...  
WO/2002/058052A1
Described is a transmission system (10) comprising a transmitter (12) for transmitting an input signal to a receiver (14) via a transmission channel (16). The transmitter (12) comprises a splitter (20) for splitting up the input signal i...  
WO2001065732A3
A system and method for increasing the performance of a digital return path in a hydrid-fiber-coax television system using baseband serial optical transport, receives an analog composite return path waveform at a comparator input to a di...  
WO/2002/058053A1
An encoding method and a decoding method for digital voice data, capable of changing reproducing speeds in response to various digital contents and without sacrifice in voice clearness. The encoding method comprises the steps of generati...  
WO2001047203A3
The invention relates to a method and transmitting devices for transmitting and/or receiving information using waves. According to said method, an information signal is impressed onto a carrier wave, whose frequency is continuously modif...  

Matches 251 - 300 out of 9,845