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41. 发明公开

EP0960525A1 METHOD OF CHROMA-KEYING FOR A DIGITAL VIDEO COMPRESSION SYSTEM 有权
标题翻译： COLOR DANCE程序数字视频压缩系统
公开(公告)号：EP0960525A1
公开(公告)日：1999-12-01
申请号：EP98957089.0
申请日：1998-12-14
申请人： Koninklijke Philips Electronics N.V.
发明人： CHALLAPALI, Kiran , CHEN, Yingwei
IPC分类号： H04N7 , H04N9
CPC分类号： H04N9/75 , H04N19/124 , H04N19/14 , H04N19/152 , H04N19/176 , H04N19/186 , H04N19/20
摘要： A method of performing chroma-key coding including the steps of defining color regions and quantifying the number of pixels in the regions, classifying macroblocks in accordance with the number of pixels thus quantified, assigning chroma complexity weights for use in the computation of quantization step-size based on the classification of the macroblocks, computing the quantization step-size, performing quantization and performing variable length coding.

42. 发明授权

EP1736021B1 ALLOCATION OF ULTRA WIDE BAND TRANSMISSION BASED ON SPECTUM OPPORTUNITIES 有权转让
标题翻译：基于频谱机会超宽带外传输分配
公开(公告)号：EP1736021B1
公开(公告)日：2012-10-31
申请号：EP05718634.8
申请日：2005-04-04
申请人： Koninklijke Philips Electronics N.V.
发明人： BIRRU, Dagnachew , MANGOLD, Stefan , CHALLAPALI, Kiran , DEL PRADO PAVON, Javier
IPC分类号： H04W16/06
CPC分类号： H04W16/06 , H04B1/71632 , H04B1/719 , H04W16/14

43. 发明公开

EP2335440A1 MAC PROTOCOL FOR MULTI-CHANNEL WIRELESS NETWORKS 有权转让
标题翻译： MAC协议的无线网络的多声道
公开(公告)号：EP2335440A1
公开(公告)日：2011-06-22
申请号：EP09735825.3
申请日：2009-04-24
申请人： Koninklijke Philips Electronics N.V.
发明人： CORDEIRO, Carlos , KO, Bong-Jun , CHALLAPALI, Kiran
IPC分类号： H04W48/10
CPC分类号： H04W48/10 , H04W88/182
摘要： A distributed coordination of a wireless network operating on different channels is provided by dispatching a device on each 'home' channel to regularly visit other 'foreign' channels to propagate and listen to broadcast information on these channels. The information in the broadcast packets transmitted on the home channel is relayed to the devices on the foreign channels by the dispatched device, as a 'proxy device' that operates on behalf of the other devices in the home channel. In a preferred embodiment, various aspects of this proxy process are optimized to reduce overhead and delays. Each channel is configured to distinguish home devices from foreign devices, to avoid contention between home and foreign devices. Acquired beacon slots on foreign channels are reserved to facilitate returning proxy devices. At the home channel, an anchor device alerts other devices of the proxy device's temporary absence and preserves the proxy device's beacon slot on the home channel.

44. 发明公开

EP2225904A2 NETWORK ENTRY AND DEVICE DISCOVERY FOR COGNITIVE RADIO NETWORKS 审中-公开
标题翻译： NETZWERKEINGABE UNDGERÄTEERKENNUNGFÜRKOGNITIVE FUNKNETZWERKE
公开(公告)号：EP2225904A2
公开(公告)日：2010-09-08
申请号：EP08853179.3
申请日：2008-11-24
申请人： Koninklijke Philips Electronics N.V.
发明人： WANG, Jianfeng , CHALLAPALI, Kiran
IPC分类号： H04W48/16 , H04W8/00
CPC分类号： H04W72/044 , H04W48/16
摘要： A device (400) scans and classifies each channel within a spectrum of channels (215-270) as being occupied or unoccupied (255), and, if occupied, whether it is occupied by a primary user (240), a secondary user (230), or an unknown user (260). As a secondary device (400), transmissions are avoided on channels occupied by primary users (490). The device selectively joins an existing network of secondary devices, or establishes a new network on an unoccupied channel (125), based on the quality of service (QoS) that the channel can provide and/or other factors. If the device is paired with a target device (115), the paired device advertises itself on a selected channel (345-360) for a period that is at least as long as the time required to scan all channels, to facilitate discovery in the event that the target device is also in a search mode. The advertising duration randomly alternates (345) among integer multiples of the scan duration.
摘要翻译：设备（400）扫描并分类频道（215-270）内的每个信道被占用或未被占用（255），并且如果被占用，是否被主用户（240）占用，次用户（ 230）或未知用户（260）。作为辅助设备（400），在主要用户（490）占用的信道上避免传输。该设备选择性地连接辅助设备的现有网络，或者基于信道可以提供的服务质量（QoS）和/或其他因素在未占用信道（125）上建立新网络。如果设备与目标设备（115）配对，则配对设备在所选频道（345-360）上通告自身的持续时间至少等于扫描所有频道所需的时间，以便于在目标设备也处于搜索模式的事件。广告持续时间在整数倍之间随机交替（345）。

45. 发明公开

EP1929820A2 SPECTRUM MEASUREMENT MANAGEMENT FOR DYNAMIC SPECTRUM ACCESS WIRELESS SYSTEMS 有权转让
标题翻译：频谱测量管理与动态范围的无线接入网络
公开(公告)号：EP1929820A2
公开(公告)日：2008-06-11
申请号：EP06796030.2
申请日：2006-09-14
申请人： Koninklijke Philips Electronics N.V.
发明人： CORDEIRO, Carlos , CHALLAPALI, Kiran
IPC分类号： H04Q7/38 , H04L12/28
CPC分类号： H04W24/10 , H04W36/30 , H04W74/00 , H04W80/00
摘要： A wireless system (100) and method (401-403) includes a medium access control (MAC) layer adapted to request and receive measurement reports from wireless devices (102) operating in restricted channels.

46. 发明授权

EP1540968B1 APPARATUS AND METHOD FOR ANNOUNCING A PENDING QOS SERVICE SCHEDULE TO A WIRELESS STATION 有权转让
标题翻译： DEVICE AND METHOD FOR消息等待QoS业务到无线设备
公开(公告)号：EP1540968B1
公开(公告)日：2008-05-21
申请号：EP03795119.1
申请日：2003-09-02
申请人： Koninklijke Philips Electronics N.V.
发明人： DEL PRADO PAVON, Javier , SOOMRO, Amjad , CHALLAPALI, Kiran , NANDAGOPALAN, Saishankar
IPC分类号： H04Q7/00
CPC分类号： H04W72/1278 , H04W52/0216 , H04W72/1236 , Y02D70/142 , Y02D70/168 , Y02D70/23
摘要： An apparatus and method is disclosed for announcing to a wireless station in a wireless network that a Quality of Service (QoS) service schedule is pending for the wireless station. The apparatus of the invention comprises a hybrid coordinator that is capable of creating and sending to the wireless station an announcement of a pending Quality of Service (QoS) service schedule. The wireless station delays entering a power save mode of operation until the wireless station receives the QoS service schedule or until a selected timeout period expires.

47. 发明公开

EP1145552A1 VIDEO SIGNAL AUTHENTICATION SYSTEM 有权
标题翻译：视频识别器
公开(公告)号：EP1145552A1
公开(公告)日：2001-10-17
申请号：EP00969433.2
申请日：2000-10-05
申请人： Koninklijke Philips Electronics N.V.
发明人： CHALLAPALI, Kiran
IPC分类号： H04N7/167 , H04N7/16
CPC分类号： H04N21/235 , H04N7/162 , H04N7/1675 , H04N21/435 , H04N21/63345
摘要： A video signal authentication system utilizes selected portions of a video signal to generate authentication codes that are transmitted in association with respective portions of the signal. The video signal preferably is in compressed format and includes synchronizing codes. The data between synchronizing codes preferably is used as discrete portions of the video signal. Each discrete portion is utilized with a selectively known key and a hash-based authentication code generating strategy to generate an authentication code. Each video portion preferably has its own authentication code. The authentication code is appended to the portion of the video signal and transmitted from a first location to the second location. At the second location, the same authentication code generating strategy is performed on the received portion of video data to generate a received authentication code. The transmitted authentication code is then compared to the received authentication code to verify the authenticity of the transmitted portion of the video signal.

48. 发明公开

EP0985318A2 SYSTEM FOR EXTRACTING CODING PARAMETERS FROM VIDEO DATA 有权
标题翻译：体系萃取视频数据的编码参数
公开(公告)号：EP0985318A2
公开(公告)日：2000-03-15
申请号：EP99900229.8
申请日：1999-01-18
申请人： Koninklijke Philips Electronics N.V.
发明人： CHEN, Yingwei , CHALLAPALI, Kiran , BALAKRISHNAN, Mahesh
IPC分类号： H04N7/30
CPC分类号： H04N19/40 , H04N19/124 , H04N19/126 , H04N19/136 , H04N19/14 , H04N19/146 , H04N19/149 , H04N19/15 , H04N19/172 , H04N19/176 , H04N19/60 , H04N19/85
摘要： A system extracts, from uncoded video data, coding parameters that correspond substantially to coding parameters used in a coding operation that was previously performed on the video data. The system generates a histogram for at least one AC frequency band in the uncoded video data and calculates a correlation function for the histogram. A maximum value of the correlation function is then identified, and a coding parameter for the at least one AC frequency band is determined using the maximum value of the correlation function.

49. 发明授权

EP1929812B1 NOTIFICATION OF INCUMBENT USERS IN DYNAMIC SPECTRUM ACCESS WIRELESS SYSTEMS 有权转让
标题翻译：注意当前用户动态，无线频谱接入系统
公开(公告)号：EP1929812B1
公开(公告)日：2013-06-19
申请号：EP06809302.0
申请日：2006-09-14
申请人： Koninklijke Philips Electronics N.V.
发明人： CORDEIRO, Carlos , CHALLAPALI, Kiran
IPC分类号： H04W16/14
CPC分类号： H04W16/14 , H04W48/08 , H04W72/10 , H04W72/12 , H04W76/30 , H04W80/02 , H04W92/10
摘要： A wireless system and method including a medium access control (MAC) layer adapted to notify a wireless station of the presence or absence of an incumbent wireless are described.

50. 发明公开

EP2335447A1 A COGNITIVE RADIO DEVICE AND METHOD FOR DETERMINING CHANNEL OCCUPANCY 有权
标题翻译：认知无线电和方法来确定信道分配
公开(公告)号：EP2335447A1
公开(公告)日：2011-06-22
申请号：EP09787091.9
申请日：2009-09-03
申请人： Koninklijke Philips Electronics N.V.
发明人： CHALLAPALI, Kiran , GHOSH, Monisha , GADDAM, Vasanth
IPC分类号： H04W74/08
CPC分类号： H04W72/04 , H04W16/14 , H04W76/00 , H04W88/08
摘要： A detector module (100) is operable in a cognitive radio device and capable of determining channel occupancy. The detector module comprises a sensor (110) for sensing incumbent signals at a variable sensing threshold, wherein the sensor generates a first occupancy indication indicating whether the channel includes an incumbent signal having a sensing metric above the variable sensing threshold; a geo-location unit (120) for generating a second occupancy indication based on a location of the detector module; and a decision unit (130) for generating an occupancy decision based on both the first occupancy indication and the second occupancy indication.

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