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1. 发明专利

JP2000314815A COMPACT OPTICAL WAVEGUIDE 失效
公开(公告)号：JP2000314815A
公开(公告)日：2000-11-14
申请号：JP2000099615
申请日：2000-03-31
申请人： MATSUSHITA ELECTRIC IND CO LTD , PANASONIC TECHNOLOGIES INC
发明人： KUROSAWA TOSHIHARU
IPC分类号： G02B6/12 , B23K26/00 , B23K101/36 , G02B6/122
摘要： PROBLEM TO BE SOLVED: To transmit light by making it turn at an angle larger than the critical angle of a waveguide. SOLUTION: The optical waveguide of this invention relates to a channel having a first refractive index, consisting of the channel 211 which is surrounded by more than one material having a refractive index different from the first one and which has a first and second parts constituted in such a manner as to hold against each other an angle larger than the critical angle prescribed by the refractive index of the channel 211 and of the surrounding materials, and consisting of a photonic band gap element 221 which is positioned so as to connect the first and the second part of the channel 211; the photonic band gap element 221 is constituted in such a shape that it actuates as a reflector against the light coming through the waveguide and being made incident on the element 221 at the angle larger than the critical angle.

2. 发明申请

WO1995031037A1 PHASE LINEAR CLASS E AMPLIFIER FOR A SATELLITE COMMUNICATION SYSTEM 审中-公开
标题翻译：用于卫星通信系统的相位线性放大器
公开(公告)号：WO1995031037A1
公开(公告)日：1995-11-16
申请号：PCT/US1995005873
申请日：1995-05-10
申请人： PANASONIC TECHNOLOGIES, INC. , SEVIC, John, F.
发明人： PANASONIC TECHNOLOGIES, INC.
IPC分类号： H03F03/217
CPC分类号： H03F3/2176
摘要： A low earth orbiting satellite communication terminal includes a data signal generator, a modulator, and a class E switching amplifier. The modulator converts a data signal from the data signal generator into a phase modulated signal which is then amplified by the class E switching amplifier for transmission to a low earth orbiting satellite. In a preferred embodiment, the modulator converts the data signal into a symmetric differential phase shift keyed data signal. The class E switching amplifier amplifies the phase modulated signal at frequencies between about 148 and 150 MHz. The class E switching amplifier includes a switching transistor, an input matching network, a class E load network, and an output matching network. The class E load network is electrically connected to the switching transistor and loads the transistor for phase linear class E operation over a predetermined bandwidth. The class E switching amplifier may include a transistor which is designed to operate at a first predetermined frequency and at a first predetermined voltage, but which is preferably operated below these predetermined levels.
摘要翻译：低地球轨道卫星通信终端包括数据信号发生器，调制器和E类开关放大器。调制器将来自数据信号发生器的数据信号转换成相位调制信号，然后由E类开关放大器放大，以传输到低地球轨道卫星。在优选实施例中，调制器将数据信号转换成对称的差分相移键控数据信号。 E类开关放大器在约148和150MHz之间的频率放大相位调制信号。 E类开关放大器包括开关晶体管，输入匹配网络，E类负载网络和输出匹配网络。 E类负载网络电连接到开关晶体管，并在预定带宽上加载用于相位线性等级E操作的晶体管。 E类开关放大器可以包括被设计为以第一预定频率和第一预定电压工作但最好在这些预定电平以下操作的晶体管。

3. 发明专利

AU2585995A Phase linear class e amplifier for a satellite communication system 未知
公开(公告)号：AU2585995A
公开(公告)日：1995-11-29
申请号：AU2585995
申请日：1995-05-10
申请人： PANASONIC TECHNOLOGIES INC
发明人： SEVIC JOHN F
IPC分类号： H03F1/02 , H03F3/217 , H04B7/155
摘要： A low earth orbiting satellite communication terminal includes a data signal generator, a modulator, and a class E switching amplifier. The modulator converts a data signal from the data signal generator into a phase modulated signal which is then amplified by the class E switching amplifier for transmission to a low earth orbiting satellite. In a preferred embodiment, the modulator converts the data signal into a symmetric differential phase shift keyed data signal. The class E switching amplifier amplifies the phase modulated signal at frequencies between about 148 and 150 MHz. The class E switching amplifier includes a switching transistor, an input matching network, a class E load network, and an output matching network. The class E load network is electrically connected to the switching transistor and loads the transistor for phase linear class E operation over a predetermined bandwidth. The class E switching amplifier may include a transistor which is designed to operate at a first predetermined frequency and at a first predetermined voltage, but which is preferably operated below these predetermined levels.

4. 发明公开

EP1163666A1 SPEECH DETECTION USING STOCHASTIC CONFIDENCE MEASURES ON THE FREQUENCY SPECTRUM 有权
标题翻译：语音检测随机KONFIDENZMASSBEWERTUNG无线电频谱
公开(公告)号：EP1163666A1
公开(公告)日：2001-12-19
申请号：EP00905720.9
申请日：2000-01-25
申请人： PANASONIC TECHNOLOGIES, INC.
发明人： GELIN, Philippe , JUNQUA, Jean-Claude
IPC分类号： G10L15/20
CPC分类号： G10L25/78
摘要： A probabilistic approach is used to classify each frame of the speech signal as speech or non-speech. The speech detection method is based on a frequency spectrum (24) extracted from each frame, such that the value for each frequency band is considered to be a random variable and each frame is considered to be an occurrence of these random variables. Using the frequency spectrums from a non-speech part of the speech signal, a known set of random variables is constructed (26). Next, each unknown frame is evaluated as to whether or not it belongs to this set of random variables by forming a unique random variable (preferably a chi-square value) (28) from a set of random variables associated with the unknown frame. The unique variable is normalized (30) with respect the known set, and then classified (32) as either speech or non-speech using the 'Test of Hypothesis'. Thus, each frame that belongs to the known set of random variables is classified as non-speech, and each frame that does not belong to the known set of random variables is classified as speech.

5. 发明公开

EP1095337A1 INEXPENSIVE, SCALABLE AND OPEN-ARCHITECTURE MEDIA SERVER 有权
标题翻译：性价比高，具有开放体系结构的可伸缩媒体服务器
公开(公告)号：EP1095337A1
公开(公告)日：2001-05-02
申请号：EP99935500.1
申请日：1999-07-13
申请人： PANASONIC TECHNOLOGIES, INC.
发明人： MUKHERJEE, Sarit , KAMEL, Ibrahim , BUSHMITCH, Dennis , AREF, Walid, G.
IPC分类号： G06F13/00
CPC分类号： H04N21/2312
摘要： Multi-media servers (10) provide clients (12) with streaming data requiring soft real-time guarantee and static data requiring a large amount of storage space. The servers (10) use a pull-mode protocol to communicate with clients through a real-time network. Separate data and control channels enhance the soft real-time capability of the server. The data channel (23) conforms to open standard protocol. A switched data link layer for the control channel (25) permits separate intrahost control messages that may be multicast and broadcast. The distributed file system (26) selects a specific data block size based upon the compression technique employed to enhance soft real-time guarantee. A hierarchical data structure combined with merging empty data blocks minimizes disk fragmentation. Data blocks are striped across multiple disks to improve disk utilization. A local buffer and a queue for both read and write requests provide support for simultaneous read and write data streams.

6. 发明公开

EP1123532A1 SEAMLESS SCALABLE DISTRIBUTED MEDIA SERVER 审中-公开
标题翻译：无缝，可扩展的分布式MEDIA SERVER
公开(公告)号：EP1123532A1
公开(公告)日：2001-08-16
申请号：EP99951855.8
申请日：1999-10-08
申请人： PANASONIC TECHNOLOGIES, INC.
发明人： KAMEL, Ibrahim, Mostafa , AREF, Walid, G. , MUKHERJEE, Sarit
IPC分类号： G06F13/00
CPC分类号： H04N21/23103 , G06F3/0607 , G06F3/0613 , G06F3/0635 , G06F3/067 , G06F11/1076 , H04N21/2181 , H04N21/238
摘要： A distributed multimedia server (18) employs modular server elements (26, 28) that connect with client systems (40) through a high bandwidth network (38). The server elements (26, 28) are connected in interleaved fashion with the switching elements (30, 32) and the data representing different media selections are arranged in stripe groups distributed across the server elements (26, 28). The server (18) can be as small as a single server element (10) or grown incrementally, as needed, by connecting additional server elements (26, 28) to the system. Multiple copies of hot media selections are stored across the distributed architecture within different stripe groups to minimize bottlenecks within the storage subsystem.

7. 发明公开

EP1123532A4 SEAMLESS SCALABLE DISTRIBUTED MEDIA SERVER 审中-公开
标题翻译：无缝，可扩展的分布式MEDIA SERVER
公开(公告)号：EP1123532A4
公开(公告)日：2004-11-03
申请号：EP99951855
申请日：1999-10-08
申请人： PANASONIC TECHNOLOGIES INC
发明人： KAMEL IBRAHIM MOSTAFA , AREF WALID G , MUKHERJEE SARIT
IPC分类号： G06F3/06 , G06F11/20 , G06F12/00 , H04L12/46 , H04N21/218 , H04N21/231 , H04N21/238 , G06F13/00 , H04N5/00
CPC分类号： H04N21/23103 , G06F3/0607 , G06F3/0613 , G06F3/0635 , G06F3/067 , G06F11/1076 , H04N21/2181 , H04N21/238
摘要： A distributed multimedia server (18) employs modular server elements (26, 28) that connect with client systems (40) through a high bandwidth network (38). The server elements (26, 28) are connected in interleaved fashion with the switching elements (30, 32) and the data representing different media selections are arranged in stripe groups distributed across the server elements (26, 28). The server (18) can be as small as a single server element (10) or grown incrementally, as needed, by connecting additional server elements (26, 28) to the system. Multiple copies of hot media selections are stored across the distributed architecture within different stripe groups to minimize bottlenecks within the storage subsystem.

8. 发明公开

EP1127460A1 ALGORITHM FOR FAST FORWARD AND FAST REWIND OF MPEG STREAMS 有权
标题翻译：算法快进和向后从MPEG数据流
公开(公告)号：EP1127460A1
公开(公告)日：2001-08-29
申请号：EP99946825.9
申请日：1999-09-08
申请人： PANASONIC TECHNOLOGIES, INC.
发明人： AREF, Walid, G. , MUKHERJEE, Sarit , KAMEL, Ibrahim, Mostafa
IPC分类号： H04N7/10
CPC分类号： H04N21/44016 , H04N7/17318 , H04N21/23424 , H04N21/238 , H04N21/2387 , H04N21/6377 , H04N21/658 , H04N21/6587
摘要： A transport system allows delivery of MPEG video streams from a network server (50) to a media client (60) while avoiding network delays associated with transitions between files contained in these streams. A buffering system (30), a transport controller (20), and a counter (40) allow buffering and interim delivery of MPEG stream data. The transport controller (20) can either deliver MPEG stream data directly to the media client, or route data through the buffering system (30). The buffering system (30) includes a population buffer (35) for storage of interim MPEG stream data, and a transport buffer (34) for temporary storage of MPEG stream data during continuous delivery. During transitional delivery, the transport controller (20) delivers interim data to the media client (60) until the requested file is available and uses the counter to select the proper start location in the requested file.

9. 发明授权

US5748807A Method and means for enhancing optical character recognition of printed documents 失效
公开(公告)号：US5748807A
公开(公告)日：1998-05-05
申请号：US138467
申请日：1993-10-15
申请人： Daniel P. Lopresti , Jonathan S. Sandberg
发明人： Daniel P. Lopresti , Jonathan S. Sandberg
IPC分类号： G06F11/10 , G06F17/21 , G06F17/22 , G06K9/03 , G06K9/20 , G06T1/00
CPC分类号： G06K9/2054 , G06K9/03 , G06K2209/01
摘要： A document marker, including first values dependent upon the layout and the contents of the document and assigned by generating or preprocessing software, is provided in machine-readable symbology on the face of a printed version of the document. The marker may include encoded document layout information and values assigned on sequences of the original text, including text-dependent decimation sequences, error correction codes or check-sums. Upon optical character recognition scanning, or other digitizing reproduction, the marker is also scanned. The scanning computer, having corresponding software, assigns second values dependent upon the layout and contents of the reproduced document. Upon comparison of the first and second decimation sequences, line and character errors can be detected and some errors corrected, thereby generating re-aligned candidate sequences. Optional error correction codes can provide further correcting capabilities, as applied to the re-aligned reproduced document sequences; and, an optional check-sum comparison can be utilized to verify the accuracy of the reproduced sequences are correct.

10. 发明授权

US5734882A Pictographic bitmap naming of files in pen-based computer systems 失效
标题翻译：基于笔的计算机系统中的图形位图命名
公开(公告)号：US5734882A
公开(公告)日：1998-03-31
申请号：US462800
申请日：1995-06-05
申请人： Daniel P. Lopresti , Andrew Tomkins
发明人： Daniel P. Lopresti , Andrew Tomkins
IPC分类号： G06F12/00 , G06F17/30
CPC分类号： G06F17/30259 , Y10S707/915 , Y10S707/921 , Y10S707/99936
摘要： A system and method for storage and retrieval of pictographic images as computer file names. Upon generation of an input image, the computer saves the image and extracted spatial and temporal information about the generation of the image. The extracted information can be accessed for comparison, ordering and retrieving of stored pictographic file names and subsequent display to the user. Final selection of the desired name is performed visually by the user while viewing a display of the ordered file names via a document browser.
摘要翻译：用于将图像图像存储和检索为计算机文件名的系统和方法。在生成输入图像时，计算机保存图像并提取关于图像生成的空间和时间信息。所提取的信息可以被访问以用于比较，排序和检索存储的图像文件名和随后的显示给用户。当通过文档浏览器查看有序文件名的显示时，用户可视觉地执行期望名称的最终选择。

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