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1. 发明申请

WO1997012475A1 METHOD AND APPARATUS FOR LOW POWER MOBILE UNITS FOR CELLULAR COMMUNICATION SYSTEM 审中-公开
标题翻译：用于细胞通信系统的低功率移动单元的方法和装置
公开(公告)号：WO1997012475A1
公开(公告)日：1997-04-03
申请号：PCT/US1996015349
申请日：1996-09-25
申请人： PACIFIC COMMUNICATION SCIENCES, INC.
发明人： PACIFIC COMMUNICATION SCIENCES, INC. , GARDNER, Steven, Holmsen , HARDIN, Carl, Thomas , PETRANOVICH, James, E.
IPC分类号： H04M11/00
CPC分类号： H04W48/16 , H04W52/0245 , Y02D70/1222
摘要： A method and apparatus for efficient use of both power and bandwidth in a cellular communications system (102) in which a mobile unit preferably enters sleep-mode when no communications have occurred between the mobile unit and the base station over a predetermined amount of time measured by an idle timer (601). Upon expiry of a wake timer (601), the mobile unit wakes from the sleep mode (603) to determine whether a message is pending (606). Concurrently, the base station transmits a TEI-notification message to all mobile units to notify each mobile unit of pending messages. Upon waking to receive the messages the mobile unit determines the quality of the transmission (608). If the quality is sufficient (610) ant the TEI-notification message does not indicate pending data, the mobile unit returns to sleep mode (601), even though the mobile unit may reside in a cell other than the cell associated with the base station currently assigned to the mobile unit.
摘要翻译：一种用于在蜂窝通信系统（102）中有效使用功率和带宽的方法和装置，其中当测量到所述移动单元和所述基站之间的预定时间量时，当移动单元和所述基站之间没有发生通信时，移动单元优选地进入睡眠模式通过空闲计时器（601）。在唤醒定时器（601）期满时，移动单元从休眠模式（603）中唤醒以确定消息是否正在等待（606）。同时，基站向所有移动单元发送TEI通知消息，以向每个移动单元通知未决消息。当唤醒接收消息时，移动单元确定传输的质量（608）。如果质量足够（610），则TEI通知消息不表示未决数据，即使移动单元可能驻留在与基站相关联的小区之外的小区中，移动单元返回休眠模式（601）目前分配给移动单元。

2. 发明申请

WO1996041491A1 PORTABLE COMMUNICATIONS AND DATA TERMINAL OPERATING TO OPTIMIZE RECEIPT OF BOTH INCOMING CDPD AND AMPS MESSAGES 审中-公开
标题翻译：便利通信和数据终端操作，以优化收到两次CDPD和AMPS消息
公开(公告)号：WO1996041491A1
公开(公告)日：1996-12-19
申请号：PCT/US1996008021
申请日：1996-05-30
申请人： PACIFIC COMMUNICATION SCIENCES, INC.
发明人： PACIFIC COMMUNICATION SCIENCES, INC. , CASHMAN, Russell, P.
IPC分类号： H04Q07/22
CPC分类号： H04W36/0088 , H04W68/00 , H04W76/20 , H04W88/06
摘要： A portable radio telephone handset (22, 100) having a radio control (108) operates as a data transfer terminal as well as an analog cellular telephone subscriber station. Two modes of operation, an analog cellular communication mode (210) and a Cellular Digital Packet Data (CDPD) mode (206), are available in the handset (22, 100). The handset (22, 100) distinguishes between paging signals indicating CDPD mode communications and those indicating analog cellular communications.
摘要翻译：具有无线电控制（108）的便携式无线电话手机（22,100）作为数据传输终端以及模拟蜂窝电话用户台进行操作。两个操作模式，模拟蜂窝通信模式（210）和蜂窝数字分组数据（CDPD）模式（206）在手机（22,100）中是可用的。手机（22,100）区分指示CDPD模式通信的寻呼信号和指示模拟蜂窝通信的那些。

3. 发明申请

WO1995012880A1 ADAPTIVE ERROR CONTROL FOR ADPCM SPEECH CODERS 审中-公开
标题翻译： ADPCM语音编码器的自适应错误控制
公开(公告)号：WO1995012880A1
公开(公告)日：1995-05-11
申请号：PCT/US1994012649
申请日：1994-11-02
申请人： PACIFIC COMMUNICATION SCIENCES, INC.
发明人： PACIFIC COMMUNICATION SCIENCES, INC. , RIEDEL, Neal, K.
IPC分类号： G10L05/00
CPC分类号： G10L25/78 , G10L19/04
摘要： Methods and apparatus for improving the perceived quality of ADPCM encoded signals by magnitude limiting samples (30, 32) of the ADPCM encoded signals prior to the decoding of samples, using an ADPCM decoder (70), of the ADPCM encoded signals. A sample of the ADPCM encoded signal is magnitude limited by the magnitude limiter (30) when a receive error is detected for the corresponding segment of the ADPCM encoded signals.
摘要翻译：用于通过使用ADPCM解码器（70）对ADPCM编码信号进行解码之前的ADPCM编码信号的幅度限制采样（30,32）来改善ADPCM编码信号感知质量的方法和装置。当对于ADPCM编码信号的相应段检测到接收误差时，ADPCM编码信号的样本是由幅度限制器（30）限制的幅度。

4. 发明申请

WO1995010153A1 METHOD AND APPARATUS FOR MAXIMIZING THE BATTERY LIFE IN CORDLESS TELEPHONES 审中-公开
标题翻译：在无绳电话中最大限度地延长电池寿命的方法和装置
公开(公告)号：WO1995010153A1
公开(公告)日：1995-04-13
申请号：PCT/US1994011019
申请日：1994-09-27
申请人： PACIFIC COMMUNICATION SCIENCES, INC.
发明人： PACIFIC COMMUNICATION SCIENCES, INC. , LIPOWSKI, Joseph, T. , RHODES, F., Matthew , PETRANOVICH, James, E. , BJEREDE, Bjorn, E. , BOURK, Terrance, Raymond
IPC分类号： H04M11/00
CPC分类号： H04M1/73 , H04B1/56 , H04W52/0245 , Y02D70/40
摘要： Methods and apparatus for reducing the power usage of a cordless phone (18) by reducing the power usage of components of the cordless phone as a function of a low power, low frequency oscillator (48), transmit time slots of a time division duplex format signal, receive time slots of a time division duplex format signal, quality of a signal transmitted by the cordless phone (18), or strength of a signal received by a cordless phone (18).
摘要翻译：通过减少作为低功率，低频振荡器（48）的功能的无绳电话的组件的功率消耗来减少无绳电话（18）的功率使用的方法和装置，发送时分双工格式的时隙信号，时分双工格式信号的接收时隙，由无绳电话（18）发送的信号的质量，或由无绳电话（18）接收的信号的强度。

5. 发明申请

WO1995007595A1 A PORTABLE COMMUNICATIONS AND DATA TERMINAL HAVING MULTIPLE MODES OF OPERATION 审中-公开
标题翻译：具有多种操作模式的便携式通信和数据终端
公开(公告)号：WO1995007595A1
公开(公告)日：1995-03-16
申请号：PCT/US1994010081
申请日：1994-09-08
申请人： PACIFIC COMMUNICATION SCIENCES, INC.
发明人： PACIFIC COMMUNICATION SCIENCES, INC. , LUBIN, Michael, L. , KASMIR, Seton, P. , KUBASAK, Kathryn, A. , HEIN, Gregory, A. , MANDAVA, Surendra, B. , POONPOL, Chanchai , HEDAYAT, Shahin , BURTIS, Donald, W.
IPC分类号： H04Q07/32
CPC分类号： H04W76/20 , H04W88/06
摘要： A portable radio telephone handset includes the capability of operating as a data transfer terminal as well as an analog cellular telephone subscriber station. Two modes of operation are available in the handset, an analog cellular communication mode and a Cellular Digital Packet Data (CDPD) mode. A paging function for incoming analog cellular communication is carried out on a CDPD channel. The handset distinguishes between paging signals identifying CDPD mode communications and paging signals identifying analog cellular communications. The handset automatically preempts CDPD communications in favor of analog cellular communications such as those carried out in an AMPS configuration.
摘要翻译：便携式无线电话手机包括作为数据传送终端以及模拟蜂窝电话用户台操作的能力。在手机，模拟蜂窝通信模式和蜂窝数字分组数据（CDPD）模式中可以使用两种操作模式。用于输入模拟蜂窝通信的寻呼功能在CDPD信道上进行。手机区分识别CDPD模式通信的寻呼信号和识别模拟蜂窝通信的寻呼信号。手机自动抢占CDPD通信，有利于诸如在AMPS配置中执行的模拟蜂窝通信。

6. 发明申请

WO1995006362A1 FREQUENCY REFERENCE COMPENSATION 审中-公开
标题翻译：频率参考补偿
公开(公告)号：WO1995006362A1
公开(公告)日：1995-03-02
申请号：PCT/US1994009520
申请日：1994-08-24
申请人： PACIFIC COMMUNICATION SCIENCES, INC.
发明人： PACIFIC COMMUNICATION SCIENCES, INC. , PETRANOVICH, James, E.
IPC分类号： H04B01/40
CPC分类号： H04B1/40 , H03J1/0008
摘要： The present invention provides a frequency tracking and compensation system and methods for minimizing the frequency offset between remote (10) and local units (20) of a communications system. The system of the present invention resides in the local unit (20) and comprises a downconverter (24), a digital transceiver (38), a processor (36), a reference oscillator and a frequency synthesizer (34). The downconverter mixes a signal received from the remote unit (10) with a local oscillator (LO) signal generated by the frequency synthesizer. The frequency of the LO signal is based on the frequency of a reference signal generated by the reference oscillator. The system of the present invention utilizes the digital transceiver (38) to determine a frequency offset of the received signal without comparing the received signal to the reference signal. The processor (36) then utilizes the frequency offset to adjust the frequency of the reference signal. The method of the present invention accumulates the frequency offsets and compares the accumulated offset to a predetermined threshold. The reference frequency is adjusted if the accumulated offset exceeds the threshold.
摘要翻译：本发明提供一种用于使通信系统的远程（10）和本地单元（20）之间的频率偏移最小化的频率跟踪和补偿系统和方法。本发明的系统在本地单元（20）中，包括下变频器（24），数字收发器（38），处理器（36），参考振荡器和频率合成器（34）。下变频器将从远程单元（10）接收的信号与由频率合成器产生的本地振荡器（LO）信号进行混合。 LO信号的频率基于由参考振荡器产生的参考信号的频率。本发明的系统利用数字收发器（38）来确定接收信号的频率偏移，而不将接收的信号与参考信号进行比较。然后，处理器（36）利用频率偏移来调整参考信号的频率。本发明的方法累积频偏，并将累积偏移量与预定阈值进行比较。如果累积偏移超过阈值，则调整参考频率。

7. 发明申请

WO1990013111A1 METHODS AND APPARATUS FOR RECONSTRUCTING NON-QUANTIZED ADAPTIVELY TRANSFORMED VOICE SIGNALS 审中-公开
标题翻译：用于重构非定量自适应变换语音信号的方法和装置
公开(公告)号：WO1990013111A1
公开(公告)日：1990-11-01
申请号：PCT/US1990001905
申请日：1990-04-09
申请人： PACIFIC COMMUNICATION SCIENCES, INC.
发明人： PACIFIC COMMUNICATION SCIENCES, INC. , CHHATWAL, Harprit , WILSON, Philip, J.
IPC分类号： G10L05/00
CPC分类号： G10L19/0212 , G10L19/002 , G10L19/06 , G10L25/24 , G10L25/27
摘要： Reconstructing adaptively transformed voice signals is done using noise shaping (110) to scale the spectral envelope (98) before generating the bit allocation (111). Generating discrete cosine transform coefficents (80) is accomplished by determining from the bit allocation (111) to which of the transform coefficients (80) no bits were allocated, retrieving the spectral envelope information (98) corresponding to the transform coefficients (80) to which no bits are allocated and substituting each item of spectral envelope information (98) into the block of quantized (82) transform coefficients (80) after each item has been given a sign and scaled.
摘要翻译：使用噪声整形（110）来重建自适应变换的语音信号，以在生成比特分配（111）之前缩放频谱包络（98）。通过从不分配比特的变换系数（80）的比特分配（111）确定生成离散余弦变换系数（80），检索与变换系数（80）对应的频谱包络信息（98）至在每个项目被赋予符号并且被缩放之后，没有比特被分配并且将每个频谱包络信息项（98）代入量化（82）变换系数块（80）。

8. 发明申请

WO1989011718A1 IMPROVED ADAPTIVE TRANSFORM CODING 审中-公开
标题翻译：改进的自适应变换编码
公开(公告)号：WO1989011718A1
公开(公告)日：1989-11-30
申请号：PCT/US1989002296
申请日：1989-05-25
申请人： PACIFIC COMMUNICATION SCIENCES, INC.
发明人： PACIFIC COMMUNICATION SCIENCES, INC. , WILSON, Philip, J.
IPC分类号： G10L05/00
CPC分类号： G10L19/06 , G10L19/002 , G10L25/15
摘要： Determining formant information of a speech signal in a transform coder in order to reduce noise and distortion caused by quantization is disclosed. Dividing the signal into blocks using a window (52) is followed by dynamic scaling (54) used to conserve necessary processing for the discrete cosine transform (64) and the use of LPC coefficients (68) for pitch generation (82) and bit allocation (108). Consequently, the transformed information (64), pitch (106), and bit allocation (108) are utilized for accurate quantization (66) of the speech signal. Dynamic scaling (54), pitch (97), and quantization (66 and 80) information are then converted to a standard format (116) for transmission and subsequent decoding.
摘要翻译：公开了在变换编码器中确定语音信号的共振峰信息以减少由量化引起的噪声和失真。使用窗口（52）将信号分割为块后面跟随用于保存离散余弦变换（64）的必要处理的动态缩放（54）以及用于音调生成（82）的LPC系数（68）和位分配（108）。因此，变换信息（64），音调（106）和比特分配（108）被用于语音信号的精确量化（66）。然后将动态缩放（54），音调（97）和量化（66和80）信息转换为标准格式（116）以进行传输和后续解码。

9. 发明申请

WO1997012476A1 METHOD AND APPARATUS FOR REDUCED POWER CONSUMPTION IN A MOBILE PACKET DATA COMMUNICATION SYSTEM 审中-公开
标题翻译：用于移动分组数据通信系统中降低功耗的方法和装置
公开(公告)号：WO1997012476A1
公开(公告)日：1997-04-03
申请号：PCT/US1996015372
申请日：1996-09-24
申请人： PACIFIC COMMUNICATION SCIENCES, INC.
发明人： PACIFIC COMMUNICATION SCIENCES, INC. , HARDIN, Carl, Thomas , PETRANOVICH, James, E. , JOHNSON, Jeffrey, Mauritz , BALACHANDRAN, Kumar
IPC分类号： H04M11/00
CPC分类号： H04W52/0216 , H04B1/1615 , H04L1/0057 , H04W76/20 , Y02D70/164 , Y02D70/40
摘要： The transmission times to Temporary Equipment Identifier (TEI) messages (723) and other control messages (725) in a Cellular Digital Packet Data (CDPD) system are predicted (721) based on an external timing standard by sending data on the relationship between the external timing standard and the position of control messages in a message segment to wireless subscribers (714). To maintain predictability, normal message flow can be interrupted if the flow is longer than the space remaining in a current message segment, defined by the placement of reference and channel identification frames.
摘要翻译：基于外部定时标准，预测（721）在蜂窝数字分组数据（CDPD）系统中的临时设备标识符（TEI）消息（723）和其他控制消息（725）的传输时间，外部定时标准和消息段中无线用户的控制消息的位置（714）。为了保持可预测性，如果流量比当前消息段中剩余的空间长，则通过参考和信道识别帧的定位来定义正常消息流。

10. 发明申请

WO1997008842A1 NEAR DIRECT CONVERSION RECEIVER AND METHOD FOR EQUALIZING AMPLITUDE AND PHASE THEREIN 审中-公开
标题翻译：近似直接转换接收器和均衡放大器和相位的方法
公开(公告)号：WO1997008842A1
公开(公告)日：1997-03-06
申请号：PCT/US1996013024
申请日：1996-08-09
申请人： PACIFIC COMMUNICATION SCIENCES, INC.
发明人： PACIFIC COMMUNICATION SCIENCES, INC. , LIPOWSKI, Joseph, T. , CLEARY, Dennis, Michael
IPC分类号： H04B01/26
CPC分类号： H03D3/009 , H03D3/008 , H04B1/26 , H04B1/30
摘要： A low cost, high performance near direct conversion FM receiver having a single local oscillator (34) and means (40) for equalizing in-phase and quadrature IF signals is disclosed. The receiver comprises downconversion means (32) and processing means (40). The downconversion means (32) receives an RF signal and downconverts the RF signal to an in-phase IF signal (IFI) and a quadrature-phase IF signal (IFQ). The processing means (40) digitizes IFI and IFQ, corrects these signals so that they are substantially equal in magnitude and substantially 90 DEG out of phase, and then downconverts the IF signals to baseband signals (I, Q).
摘要翻译：公开了具有单个本地振荡器（34）的低成本，高性能的近直接转换FM接收机和用于均衡同相和正交IF信号的装置（40）。接收机包括下变频装置（32）和处理装置（40）。下变频装置（32）接收RF信号并将RF信号下变频为同相IF信号（IFI）和正交相IF信号（IFQ）。处理装置（40）对IFI和IFQ进行数字化，校正这些信号，使得它们在幅度上基本上相等，并且基本相差90°，然后将IF信号下变频到基带信号（I，Q）。

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