子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 181 | Information transmission method, mobile communications system, base station and mobile station in which data size of identification data is reduced | US11126177 | 2005-05-11 | US07031285B2 | 2006-04-18 | Michiaki Takano |
| In an information transmission method, a radio communications system, a base station and a mobile station, a TBS size, a modulation scheme and the number of codes in a multicode are converted into identification data having a relatively smaller data size before being transmitted to a destination of communication. The TBS size is identified by using, in combination, an identification code identifying a channelization code set, an identification code identifying a modulation scheme, and an identification code obtained by converting a combination of the number of codes in a multicode and a modulation pattern identification (TFRC) into a corresponding code. Accordingly, the data size for TBS size identification is reduced. | ||||||
| 182 | System and method for bandwidth compression of frequency and phase modulated signals and suppression of the upper and lower sidebands from the transmission medium | US09847993 | 2001-05-04 | US07027505B2 | 2006-04-11 | Abdullah A. Al-Eidan |
| A system and method for improving radio communication of frequency or phase modulated transmission and reception. Signal transmission is implemented by suppression of the upper and lower sidebands of a narrowband or very narrowband FM/PM signal from the transmission medium such that transmission is limited to the instantaneous frequency varied about the carrier frequency (center frequency). Suppression may be achieved by adding a bandpass filter between the modulator and the power amplifier of the narrowband FM transmitter. Upon receipt of the suppressed sideband signal, the received signal is converted to a first narrowband IF signal, and then the narrowband or very narrowband frequency deviation IF signal is expanded by frequency multiplication to generate a second wideband or very wideband IF signal. A discriminator may be used to convert the frequency-multiplied signal into a low frequency signal or audio signal for further processing. Through sideband suppression, bandwidth requirements are reduced without affecting sound quality and signal-to-noise ratio is improved. | ||||||
| 183 | Method, system and computer program product for LZJH data compression with minimum redundancy coding | US10054219 | 2001-11-09 | US07016408B2 | 2006-03-21 | Robert Jeff Heath |
| A method, system and computer program product for encoding and decoding data over a communications channel, including receiving input data to be encoded; generating compressed codes from the input data using a Lempel-Ziv-Jeff-Heath (LZJH) data compression algorithm; and applying a minimum redundancy coding algorithm on the compressed codes to generate compressed data. | ||||||
| 184 | Information transmission method, mobile communications system, base station and mobile station in which data size of identification data is reduced | US10225204 | 2002-08-22 | US06999439B2 | 2006-02-14 | Michiaki Takano |
| In an information transmission method, a radio communications system, a base station and a mobile station, a TBS size, a modulation scheme and the number of codes in a multicode are converted into identification data having a relatively smaller data size before being transmitted to a destination of communication. The TBS size is identified by using, in combination, an identification code identifying a channelization code set, an identification code identifying a modulation scheme, and an identification code obtained by converting a combination of the number of codes in a multicode and a modulation pattern identification (TFRC) into a corresponding code. Accordingly, the data size for TBS size identification is reduced. | ||||||
| 185 | Preparing electronic data for transmission | US10629886 | 2003-07-29 | US20050025233A1 | 2005-02-03 | Kristofer Metz; Nolan Letellier |
| A method for preparing electronic data for transmission includes calculating a duration for compressing the electronic data, calculating a duration for transmitting the electronic data if not compressed, and compressing the electronic data only if the duration for compressing does not exceed the duration for transmitting. | ||||||
| 186 | System and method for minimising bandwidth utilisation in a wireless interactive voice response system | US10475673 | 2004-04-30 | US20040185835A1 | 2004-09-23 | Bruno Richard Preiss; Daniel Wilk |
| The present invention provides a novel system, method and apparatus of delivering interactive voice response services in a more efficient manner over a network. The system provides for the placement of a subscriber station local 28 to the subscriber and a gateway protocol converter at the base station 40. The gateway protocol converter converts bandwidth-intensive audio messages into compact data messages, which upon transmission to the subscriber station 28 are converted back into audio messages. By using data messages instead of audio messages over the network, bandwidth is saved on the network for other traffic. Another embodiment of the invention provides a method for transmitting subscriber responses utilizing the system. In another embodiment of the invention, there is provided an IVR system that utilizes the VoiceXML standard, or the like, whereby the Document Server, VoiceXML Interpreter Context, and the Implementation Platform are distributed at various locations along the communication link between the IVR service provider and the subscriber stationnullsuch components being distributed along the link according to a desired utilization of network resources, such as bandwidth. | ||||||
| 187 | Transport processor | US10068579 | 2002-02-05 | US06781601B2 | 2004-08-24 | Francis Cheung |
| The present invention relates to a system and method for processing information, specifically data packets. One embodiment of the present invention relates to a method for processing information, comprising determining if a first identifier associated with the information is acceptable and assigning a second identifier to the information. The method further includes determining a type of processing that is required using the second identifier and performing that type of processing on the information. | ||||||
| 188 | Audio signal processing apparatus | US10721158 | 2003-11-26 | US20040107093A1 | 2004-06-03 | Norihiko Fuchigami; Shoji Ueno; Yoshiaki Tanaka |
| In an audio signal encoding apparatus, a first audio signal and a second audio signal are added into an addition-result signal. The first audio signal is subtracted from the second audio signal to generate a subtraction-result signal. A first difference signal is generated which represents a difference in the addition-result signal. A second difference signal is generated which represents a difference in the subtraction-result signal. A plurality of first predictors have different prediction characteristics respectively, and are responsive to the first difference signal for generating first different prediction signals for the first difference signal, respectively. A plurality of first subtracters operate for generating first prediction-error signals representing differences between the first difference signal and the first different prediction signals, respectively. A first minimum prediction-error signal representative of a smallest difference is selected from among the first prediction-error signals. A plurality of second predictors have different prediction characteristics respectively, and are responsive to the second difference signal for generating second different prediction signals for the second difference signal, respectively. A plurality of second subtracters operate for generating second prediction-error signals representing differences between the second difference signal and the second different prediction signals, respectively. A second minimum prediction-error signal representative of a smallest difference is selected from among the second prediction-error signals. | ||||||
| 189 | Information transmission method, mobile communications system, base station and mobile station in which data size of identification data is reduced | US10225204 | 2002-08-22 | US20030142694A1 | 2003-07-31 | Michiaki Takano |
| In an information transmission method, a radio communications system, a base station and a mobile station, a TBS size, a modulation scheme and the number of codes in a multicode are converted into identification data having a relatively smaller data size before being transmitted to a destination of communication. The TBS size is identified by using, in combination, an identification code identifying a channelization code set, an identification code identifying a modulation scheme, and an identification code obtained by converting a combination of the number of codes in a multicode and a modulation pattern identification (TFRC) into a corresponding code. Accordingly, the data size for TBS size identification is reduced. | ||||||
| 190 | Apparatus for extracting a carrier frequency | US10207857 | 2002-07-31 | US20030045255A1 | 2003-03-06 | Manabu Nakamura; Kazuo Akaike |
| A frequency extractor extracts an input frequency of an input signal. The frequency extractor includes a frequency multiplier, first and second filters, a binary circuit and a frequency divider. The frequency multiplier obtains a signal of a multiplied frequency, the multiplied frequency being N times the input frequency, N being an integer greater than 1. The first filter, having a first bandwidth, filters the signal of the multiplied frequency to provide a first filtered signal. The binary circuit binarizes the first filtered signal to a binary signal. The frequency divider divides the binary signal by a factor of N to provide a divided signal. The second filter, having a second bandwidth, filters the divided signal to generate the input frequency in a form of a continuous wave, wherein the second bandwidth is about 1/N times the first bandwidth. | ||||||
| 191 | Low power scheduling for multimedia systems | US09895048 | 2001-06-29 | US20030028659A1 | 2003-02-06 | Malena Rosa Mesarina; Yoshio Frank Turner |
| A method and system thereof for reducing the energy consumed when decoding an encoded and synchronized multimedia data stream, wherein the data stream is non-preemptable and subject to precedence constraints. In a client-server environment, the server delivers to the client the stream for decoding. The client has a processor operating on a discrete variable-voltage power supply. Prior to transmitting the stream to the client, the server produces an execution schedule according to the precedence constraints. The server also assigns a voltage setting for each task in the schedule, wherein each task decodes a frame in the stream without preemption. The server transmits the execution schedule and voltage settings to the client with the encoded data stream. The schedule and voltage settings reduce energy consumption by the client while satisfying multimedia timing constraints. | ||||||
| 192 | In a subscriber network receiving digital packets and transmitting digital packets below a predetermined maximum bit rate | US09896335 | 2001-06-29 | US20030002577A1 | 2003-01-02 | Howard G. Pinder |
| An apparatus in a digital network receives at least one input transport stream having a plurality of PID streams and outputs at least one transport streams. The apparatus demultiplexes the at least one input transport streams and determines whether to: decrypt packets included in the at least one input transport stream; statistically multiplex a group of PID streams included in the at least one input transport stream; and encrypt packets included in the at least one input transport stream. | ||||||
| 193 | Speech coding system | US10116600 | 2002-04-04 | US20020173949A1 | 2002-11-21 | Ercan Ferit Gigi |
| 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 and step-size adaptation means, while the speech decoder comprises an ADPCM decoder with similar step-size adaptation means as in the ADPCM encoder and a decoder, and a post-processor. The pre-processor is provided with phase-smearing filtering means to smooth the effect of high and/or rapid energy changes at the input of the quantizer, while the post-processor is provided with filtering means inverse to said phase-smearing filtering means. | ||||||
| 194 | Compressed audio error concealment apparatus and method | US09073513 | 1998-05-06 | US06456719B1 | 2002-09-24 | Jou-Yang Yuh |
| An apparatus and method for error concealment of compressed audio data are provided. The apparatus includes a packet-unit controller, a threshold controller, coupled to the packet-unit controller, a scale detector coupled to the threshold controller, and an error-correction circuit coupled to the packet-unit controller and the scale detector. The method carried out by the apparatus includes the following a first step of decompressing the input compressed audio data a second step of checking whether any pair of successive scales in the input compressed audio data is incorrect and the packet length of the input compressed audio data a third step of, if either of the scales or the packet length is detected to be incorrect, performing the following substeps of discarding the current output of decompressed audio data, then setting the threshold to an error-mode threshold value and then checking the total number of correctly received packets; and a fourth step of, if the scale ratio, the packet length, and the packet total number are detected to be correct, performing the following substeps of outputting the decompressed audio data. and then setting the scale threshold to a normal-mode threshold value. | ||||||
| 195 | Method and apparatus for compressing GPS satellite broadcast message information | US09504152 | 2000-02-15 | US06429811B1 | 2002-08-06 | Yilin Zhao; Thomas M. King; George J. Geier |
| An assisted global positioning satellite (Assisted GPS) system has a GPS reference network node (260) that collects GPS satellite broadcast messages and prepares separate GPS assistance messages to be modulated by a base transceiver station (BTS) (202) on a cellular carrier signal (201) and sent to single or multiple handset (204). In a first preferred embodiment, instead of the handset (204) receiving standard ephemeris and clock correction data elements in a GPS assistance message, a compressed GPS assistance message containing XYZ information contains a GPS satellite's coordinate position modified according to the satellite clock correction. In a second preferred embodiment, there is a first type of compressed GPS assistance message containing subframe 1, 2, 3 data of a GPS satellite broadcast message and a second type of compressed GPS assistance message containing subframe 4, 5 data of a GPS satellite broadcast message. The compressed GPS assistance messages according to the second preferred embodiment lack redundant or predictable information in order to reduce the size of the compressed GPS assistance message. The first type can be updated at a different rate than the second type in order to reduce the traffic and yet keep the handset (204) up to date. | ||||||
| 196 | Transport processor | US10068579 | 2002-02-05 | US20020093517A1 | 2002-07-18 | Francis Cheung |
| The present invention relates to a system and method for processing information, specifically data packets. One embodiment of the present invention relates to a method for processing information, comprising determining if a first identifier associated with the information is acceptable and assigning a second identifier to the information. The method further includes determining a type of processing that is required using the second identifier and performing that type of processing on the information. | ||||||
| 197 | Audio signal processing apparatus | US10096276 | 2002-03-13 | US20020091514A1 | 2002-07-11 | Norihiko Fuchigami |
| In an audio signal encoding apparatus, a first audio signal and a second audio signal are added into an addition-result signal. The first audio signal is subtracted from the second audio signal to generate a subtraction-result signal. A first difference signal is generated which represents a difference in the addition-result signal. A second difference signal is generated which represents a difference in the subtraction-result signal. A plurality of first predictors have different prediction characteristics respectively, and are responsive to the first difference signal for generating first different prediction signals for the first difference signal, respectively. A plurality of first subtracters operate for generating first prediction-error signals representing differences between the first difference signal and the first different prediction signals, respectively. A first minimum prediction-error signal representative of a smallest difference is selected from among the first prediction-error signals. A plurality of second predictors have different prediction characteristics respectively, and are responsive to the second difference signal for generating second different prediction signals for the second difference signal, respectively. A plurality of second subtracters operate for generating second prediction-error signals representing differences between the second difference signal and the second different prediction signals, respectively. A second minimum prediction-error signal representative of a smallest difference is selected from among the second prediction-error signals. | ||||||
| 198 | Method and system for data transmission using a lossy compression service | US09124785 | 1998-07-30 | US06327303B1 | 2001-12-04 | Craig Robert Balogh; William Chun-Hung Yip; Timothy Gerard Hall |
| A system (20) transmits a digital data stream (22) using a lossy compression service (24) having a communication path (28) through which compressed signals propagate. The system includes a data conditioner (36) configured to condition the received digital data stream (22) to produce data subsets (66). A frame generator (36) expands each of the data subsets (66) to generate distinct signal sets (68). The distinct signal sets (68) are expressed in a data size greater than the data subsets (66) to compensate for lossy compression cause by the lossy compression service (24). A transmitter is in communication with the frame generator (36) and transmits digitized ones of the distinct signal sets (68) in frames of a digital bit stream (126) over the communication path (28). | ||||||
| 199 | METHOD AND APPARATUS FOR IMAGE ENCODING METHOD AND APPARTUS FOR IMAGE DECODING AND RECORDING MEDIUM | US09048134 | 1998-03-25 | US20010043653A1 | 2001-11-22 | KAZUHUSA HOSAKA |
| The present invention relates to a technique of encoding each data unit (for example, a block data) of an image and simultaneously, its relevant information indicative of a coding mode of the data unit. In particular, each data unit of the image is encoded in accordance with either the information indicative of a coding mode of each of data units which are highly correlated in space or time to the data unit to be encoded or pixels in decoded data units. Accordingly, the encoding of the image will be executed at higher efficiency. | ||||||
| 200 | System and method of error control for interactive low-bit rate video transmission | US79621 | 1998-05-15 | US6104757A | 2000-08-15 | Injong Rhee |
| A new retransmission-based error control technique that does not incur any additional latency in frame playout times and is suitable for interactive video applications. This retransmission technique combined with layered video coding yields good error resilience for interactive video conferencing. The technique exploits the temporal dependency of inter-coded frames and can be easily incorporated into motion-compensation based coding standards such as MPEG and H.261, achieving very good compression efficiency. | ||||||
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