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21. 发明授权

US5119196A Ghost cancellation of analog TV signals 失效
标题翻译： GHOST取消模拟电视信号
公开(公告)号：US5119196A
公开(公告)日：1992-06-02
申请号：US542612
申请日：1990-06-25
申请人： Ender Ayanoglu , Israel Bar-David , Richard D. Gitlin , Chih-Lin I , Jack H. Winters
发明人： Ender Ayanoglu , Israel Bar-David , Richard D. Gitlin , Chih-Lin I , Jack H. Winters
IPC分类号： H04N5/21
CPC分类号： H04N5/211
摘要： Ghosts are canceled in received analog TV (for IDTV, EDTV, and HDTV) signals by utilizing the fact that there are short periods of time without the analog signals (the horizontal flyback interval between the lines) to process the received signal on a line-to-line basis using a finite impulse response (FIR) or an infinite impulse response (IIR) equalizer. This line-by-line processing (which can be implemented by periodic cleansing of the equalizer) overcomes the limitations of standard equalizers to allow for 40-50 dB of suppression of ghosts, even with nulls in the spectrum, as long as the ghost delay is less than the period of time without the analog signal. Furthermore, by using time inversion in combination with line-by-line processing, the stability problem of the conventional IIR equalizer is eliminated. The IIR equalizer may be implemented on a single digital integrated circuit. Alternatively, an FIR equalizer can be used which, although it may require multiple chips (i.e., more taps), can acquire and adapt to the ghosted channel more rapidly than an IIR equalizer. With line-by-line processing, FIR and IIR equalizers can eliminate any ghost with delays up to 11 .mu.sec in IDTV or EDTV. For larger delays, a standard IIR or FIR equalizer can be used as a preprocessor to eliminate small ghosts and an adaptive antenna can be used to eliminate large ghosts. Thus, with these techniques, the ghosting problem can be eliminated in all TV receivers.

22. 发明授权

US06178329B1 Method and apparatus for dynamic channel allocation for wireless communications using channel occupancy data 失效
标题翻译：用于使用信道占用数据的无线通信的动态信道分配的方法和装置
公开(公告)号：US06178329B1
公开(公告)日：2001-01-23
申请号：US08881625
申请日：1997-06-24
申请人： Pi-Hui Chao , Chih-Lin I
发明人： Pi-Hui Chao , Chih-Lin I
IPC分类号： H04Q730
CPC分类号： H04W16/10 , H04W16/12 , H04W28/16 , H04W72/04 , H04W72/0413 , H04W72/0453 , H04W72/082 , H04W88/08 , H04W92/20
摘要： The present invention concerns the efficient use of the radio spectrum in wireless communications. Channel occupancy data and channel availability data concerning a specific base station and its neighbors are used to assign frequency channels to mobile units and/or base stations. The channel occupancy and availability data may be located at a base station or at a mobile switching center. Channels are preferably assigned as channel pairs.
摘要翻译：本发明涉及无线电频谱在无线通信中的有效使用。使用关于特定基站及其邻居的信道占用数据和信道可用性数据来向移动单元和/或基站分配频率信道。信道占用和可用性数据可以位于基站或移动交换中心。信道优选地被分配为信道对。

23. 发明授权

US6055432A Dynamic channel allocation in macrocells with random exclusion for allowing underlaying autonomous microcells 失效
标题翻译：具有随机排除的宏小区中的动态信道分配，用于允许下层自治微小区
公开(公告)号：US6055432A
公开(公告)日：2000-04-25
申请号：US911693
申请日：1997-08-15
申请人： Mohamed Abdul Haleem , Chih-Lin I
发明人： Mohamed Abdul Haleem , Chih-Lin I
IPC分类号： H04W16/10 , H04W16/14 , H04Q7/00
CPC分类号： H04W16/10 , H04W16/14 , H04W28/16
摘要： Co-Existence Dynamic Channel Assignment (DCA) techniques for overlay macrocellular systems facilitate the coexistence of embedded autonomous underlay microcellular (e.g., indoor) systems. The Co-existence of the two systems without excessive mutual interference is achieved through statistical systematic exclusion of predefined subsets of the universal channel set from the dynamic assignment to the overlay macrocells. The sets of channels are made available to the underlay systems. The exclusion is done with minimal DCA performance degradation.
摘要翻译：用于覆盖宏蜂窝系统的共存动态信道分配（DCA）技术有助于嵌入式自主底层微蜂窝（例如，室内）系统的共存。通过统计系统地排除从动态分配到覆盖宏小区的通用信道集的预定义子集，可以实现两个系统的共存，而没有过多的相互干扰。这些通道可用于底层系统。排除是以最小的DCA性能降级完成的。

24. 发明授权

US6047190A Dynamic channel allocation in macrocells with deterministic exclusion for allowing underlaying autonomous microcells 失效
标题翻译：具有确定性排除的宏小区中的动态信道分配，用于允许下层自治微小区
公开(公告)号：US6047190A
公开(公告)日：2000-04-04
申请号：US911694
申请日：1997-08-15
申请人： Mohamed Abdul Haleem , Chih-Lin I
发明人： Mohamed Abdul Haleem , Chih-Lin I
IPC分类号： H04W16/10 , H04W16/14 , H04Q7/00
CPC分类号： H04W16/10 , H04W16/14 , H04W28/16
摘要： Co-Existence Dynamic Channel Assignment (DCA) techniques for overlay macrocellular systems facilitate the coexistence of embedded autonomous underlay microcellular (e.g., indoor) systems. The co-existence of the two systems without excessive mutual interference is achieved through systematic deterministic exclusion of predefined subsets of the universal channel set from the dynamic assignment to the overlay macrocells. The sets of channels are made available to the underlay systems. The exclusion is done with minimal DCA performance degradation. Multiple deterministic exclusions methods are described.
摘要翻译：用于覆盖宏蜂窝系统的共存动态信道分配（DCA）技术有助于嵌入式自主底层微蜂窝（例如，室内）系统的共存。通过从动态分配到覆盖宏小区的通用信道集的预定义子集的系统确定性排除，实现了没有过度相互干扰的两个系统的共存。这些通道可用于底层系统。排除是以最小的DCA性能降级完成的。描述了多个确定性排除方法。

25. 发明授权

US5881056A Method and apparatus of a multi-code code division multiple access receiver having shared accumulator circuits 失效
标题翻译：具有共享累加器电路的多码分多址接收机的方法和装置
公开(公告)号：US5881056A
公开(公告)日：1999-03-09
申请号：US700257
申请日：1996-08-20
申请人： Howard C. Huang , Chih-Lin I , Andrzej Partyka , Stephan ten Brink , Charles Albert Webb, III
发明人： Howard C. Huang , Chih-Lin I , Andrzej Partyka , Stephan ten Brink , Charles Albert Webb, III
IPC分类号： H04B1/707 , H04B1/709 , H04B1/7115 , H04J11/00 , H04J13/00 , H04B7/216 , H04J13/04
CPC分类号： H04B1/709 , H04B1/707 , H04B1/7115 , H04J13/0077 , H04B2201/70714
摘要： A Multi-Code (MC) Code Division Multiple Access (CDMA) receiver receives N (where N>1) encoded signal channels over multiple air signal paths. The MC-CDMA receiver receives and demodulates the N encoded signal channels into N signal samples and includes a common circuit for time-sharing an accumulator, for accumulating the N signal samples, among a plurality of second correlators. Each of the plurality of second correlator means utilizes the time-shared accumulator to accumulate samples from each of the N signals which are then decoded into an associated one of the N signal channels.
摘要翻译：多码（MC）码分多址（CDMA）接收机通过多个空中信号路径接收N（其中N≥1）个编码信号信道。 MC-CDMA接收机将N个编码信号信道接收并解调为N个信号样本，并且包括用于在多个第二相关器之间累积N个信号采样的累加器的时分共享电路。多个第二相关器装置中的每一个利用时间共享累加器来累积来自N个信号中的每一个的样本，然后将其解码为N个信号信道中的一个相关联的信号。

26. 发明授权

US5442625A Code division multiple access system providing variable data rate access to a user 失效
标题翻译：码分多址系统为用户提供可变数据速率访问
公开(公告)号：US5442625A
公开(公告)日：1995-08-15
申请号：US242471
申请日：1994-05-13
申请人： Richard D. Gitlin , Chih-Lin I
发明人： Richard D. Gitlin , Chih-Lin I
IPC分类号： H04B1/707 , H04B7/005 , H04B7/26 , H04J11/00 , H04J13/00 , H04J13/10 , H04J13/18 , H04J99/00 , H04L1/00 , H04L1/08
CPC分类号： H04L1/0041 , H04B7/264 , H04J13/0048 , H04J13/107 , H04J13/18 , H04L1/0022 , H04L1/08 , H04B2201/70705 , H04L1/0059 , H04L1/0071 , H04W52/26
摘要： A multi-code code division multiple access system allows a user at a radio transmitter unit to dynamically change its source data bit rate. In response to a user input selecting one of the plurality of source bit rates, an adjustable coding circuit in the transmitter spreads and transmits the user's digital bit stream received at the selected bit rate to a channel bit rate which at least equals the highest bit rate of the plurality of source bit rates. The plurality of source bit rates includes a basic bit rate R and at least one bit rate which is a multiple M of the basic bit rate R, where M is an integer of at least 1. The user's input selects a particular user source bit rate by identifying a basic bit rate multiple M to a base station that is to receive the transmission.
摘要翻译：多码分码多址系统允许无线电发射机单元的用户动态地改变其源数据比特率。响应于选择多个源比特率之一的用户输入，发射机中的可调节编码电路将以所选比特率接收的用户数字比特流扩展并发送至至少等于最高比特率的信道比特率的多个源比特率。多个源比特率包括基本比特率R和至少一个比特率，其是基本比特率R的多M，其中M是至少为1的整数。用户的输入选择特定用户源比特率通过向要接收传输的基站识别基本位速率M M。

27. 发明授权

US5007067A Diversity coding for transparent self-healing communications networks 失效
标题翻译：透明自愈通信网络的分集编码
公开(公告)号：US5007067A
公开(公告)日：1991-04-09
申请号：US414874
申请日：1989-09-29
申请人： Ender Ayanoglu , Richard D. Gitlin , Chih-Lin I , James E. Mazo
发明人： Ender Ayanoglu , Richard D. Gitlin , Chih-Lin I , James E. Mazo
IPC分类号： H04L1/22 , H04L1/02 , H04L25/49
CPC分类号： H04L1/02 , H04L25/4908
摘要： This invention is a technique for the substantially instantaneous self-healing of digital communications networks. Digital data streams from each of N nearby sources are combined and encoded to produce N+M coded data streams using a coding algorithm. The N+M coded data streams are then each transmitted over a separate long haul communications link to a decoder where any N of the N+M coded data streams can be decoded uniquely to produce the original N data streams. The orginal N data streams are then distributed to their respective separate end destinations. If any M or less of the N+M long haul communications links fails, i.e. as in a telephone line that gets cut or a long distance switch that fails, no rerouting of traffic need be done. Rather, the receiver detects loss of carrier on the failed link(s), and immediately supplies the missing data by decoding the data from the at least N remaining links. The technique overcomes a long felt problem of trying to reroute traffic by using sophisticated resource allocation techniques when a communications link fails.

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