Patents by Inventor Charles Chuanming Wang

Charles Chuanming Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210319253
    Abstract: The invention relates to a method for generating a saliency map for a picture of a sequence of pictures, the picture being divided in blocks of pixels. The method comprises a step for computing a saliency value for each block of the picture. According to the invention, the saliency value equals the self information of the block, the self information depending on the spatial and temporal contexts of the block.
    Type: Application
    Filed: October 10, 2006
    Publication date: October 14, 2021
    Inventors: XIAODONG GU, GUOPING QIU, ZHIBO CHEN, QUQING CHEN, CHARLES CHUANMING WANG
  • Patent number: 9754045
    Abstract: A system and method for aggregating text-based content and presenting the text-based content as spoken audio is described herein, where a server module retrieves and aggregates web content from web content providers that may include text-based web content that is then extracted, filtered and categorizes for a client module to retrieve and play as spoken audio.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: September 5, 2017
    Assignee: Harman International (China) Holdings Co., LTD.
    Inventors: Charles Chuanming Wang, Yong Ling
  • Patent number: 8832519
    Abstract: A method for Forward Error Correction (FEC) encoding in a transmitter, the method comprising: receiving a data stream from a data source; generating a first Forward Error Correction data for respective data block with a first block size of the data stream; and generating a second Forward Error Correction data for respective data block with a second block size of the data stream, wherein the second block size is different with the first block size and wherein the data blocks of the first block size form the data stream, and the data blocks with the second block size form the data stream.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: September 9, 2014
    Assignee: Thomson Licensing
    Inventors: Jun Li, Xiao Jun Ma, Huan Qiang Zhang, Charles Chuanming Wang
  • Patent number: 8737474
    Abstract: A scalable video bitstream may have an H.264/AVC compatible base layer and a scalable enhancement layer, where scalability refers to color bit depth. The H.264/AVC scalability extension SVC provides also other types of scalability, e.g. spatial scalability where the number of pixels in BL and EL are different. According to the invention, BL information is upsampled in two logical steps, one being texture upsampling and the other being bit depth upsampling. Texture upsampling is a process that increases the number of pixels, and bit depth upsampling is a process that increases the number of values that each pixel can have, corresponding to the pixels color intensity. The upsampled BL data are used to predict the collocated EL. The BL information is upsampled at the encoder side and in the same manner at the decoder side, wherein the upsampling refers to spatial and bit depth characteristics.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: May 27, 2014
    Assignee: Thomson Licensing
    Inventors: Yong Ying Gao, Yu Wen Wu, Charles Chuanming Wang
  • Patent number: 8693380
    Abstract: A method and apparatus for improving power performance of a wireless adapter which adopts a time slicing scheme by dividing a beacon interval into multiple slices, and assigning these slices to the stations through the beacon frame. The stations wakeup at the appointed slices to receive their buffered frames from an access point, and may enter into sleep state once the transactions conclude. A further embodiment including formatting data into a control frame for use in a wireless local area network, the frame including an indication, for each station associated with the wireless local area network, whether frames are buffered awaiting transmission to each respective station, a number of time intervals between control frames, and at which time interval the transmission of the buffered frames will begin for each station having buffered frames awaiting transmission.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: April 8, 2014
    Assignee: Thomson Licensing
    Inventors: Yong He, Xiaojun Ma, Huanqiang Zhang, Jun Li, Charles Chuanming Wang
  • Patent number: 8660203
    Abstract: Modern coding and modulation techniques have greatly improved the transmission and reception of signals. A method is described including receiving a signal de-mapping the signal into a first and second substream, decoding the first and second substream using a low density parity check decoding process, and combining the first and second decoded substream into a single data stream. An apparatus is described including a symbol de-mapper that receives a signal de-maps the modulation symbols in the signal into a first and second substream, a first decoder that decodes the first substream using a low density parity check coding process at a first decoding rate, a second decoder that decodes the second substream at a second encoding rate, and a combiner that combines the first substream and the second substream into a single data stream.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: February 25, 2014
    Assignee: Thomson Licensing
    Inventors: Wei Zhou, Li Zou, Yuping Zhao, Xiaoxin Zhang, Peng Liu, Charles Chuanming Wang
  • Patent number: 8654880
    Abstract: Modern coding and modulation techniques have greatly improved the transmission of signals. A method is described including receiving a stream of data bits, demultiplexing the stream into a first and second substream, encoding the first and second substream using a low density parity check coding process, and mapping the first substream to a first region of a symbol constellation map and the second substream to a second region. Also, an apparatus is described including a demultiplexer that produces a first and second bitstream, a first encoder that encodes the first substream using a low density parity check coding process at a first encoding rate, a second encoder that encodes the second substream at a second rate, and a symbol mapper that maps bits from the first substream to a first region of a symbol constellation map and maps bits from the second substream to a second region.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: February 18, 2014
    Assignee: Thomson Licensing
    Inventors: Wei Zhou, Li Zou, Yuping Zhao, Xiaoxin Zhang, Peng Liu, Charles Chuanming Wang
  • Patent number: 8542745
    Abstract: A method for utilizing a CUDA based GPU to accelerate a complex, sequential task such as video decoding, comprises decoding on a CPU headers and macroblocks of encoded video, performing inverse quantization (on CPU or GPU), transferring the picture data to GPU, where it is stored in a global buffer, and then on the GPU performing inverse waveform transforming of the inverse quantized data, performing motion compensation, buffering the reconstructed picture data in a GPU global buffer, determining if the decoded picture data are used as reference for decoding a further picture, and if so, copying the decoded picture data from the GPU global buffer to a GPU texture buffer. Advantages are that the data communication between CPU and GPU is minimized, the workload of CPU and GPU is balanced and the modules off-loaded to GPU can be efficiently realized since they are data-parallel and compute-intensive.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: September 24, 2013
    Assignee: Thomson Licensing
    Inventors: Hui Zhang, Li Hua Zhu, Charles Chuanming Wang
  • Patent number: 8533765
    Abstract: A system and method for broadcasting content includes a content provider which interfaces with one or more clients through a network. The content provider includes a scheduler responsive to requests for content from clients. The scheduler provides the content in blocks by making the blocks available to requesters by a plurality of streams wherein a subsequent requester accesses blocks from previous requester's streams complemented by a subset of blocks as a stream for this requester to complete an entire set of blocks for the subsequent requester. By manipulating the scheduler as a function of user requests, this system and method is able to provide a video on demand service at a fractional bandwidth usage of a conventional VOD system.
    Type: Grant
    Filed: August 26, 2005
    Date of Patent: September 10, 2013
    Assignee: Thomson Licensing
    Inventors: Jun Li, Charles Chuanming Wang, Kumar Ramaswamy
  • Patent number: 8423855
    Abstract: An adaptive and scalable packet error correction apparatus and method in a wireless multicast network is provided. Each retransmission request from a receiver contains a round number and the number of repairs sent in that round. At each receiver, there are two counters for counting the rounds sent out on the network and the number of repairs that have been required. A receiver on the wireless multicast network listens to the ARQ requests sent by other receivers to update the two counters and determines whether its request should be suppressed or be sent out.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: April 16, 2013
    Assignee: Thomson Licensing
    Inventors: Xiao Jun Ma, Huan Qiang Zhang, Ren Lei Chen, Guang Hua Zhou, Jun Li, Charles Chuanming Wang
  • Patent number: 8289936
    Abstract: A public wireless LAN permits receipt of non-authentication traffic, such as access information requests, from a mobile wireless communications device prior to device authentication by partially opening a controlled port within an access point. The wireless LAN re-directs such non-authentication traffic received at the AP from the mobile wireless communications to a local web server. The local web server provides reply to the mobile wireless communications device, enabling a determination by the device whether or not to request access. The device seeks access by way of an access request received at the AP. In response, the AP re-directs the access request through an uncontrolled port in the AP to an access server that authenticates device. Upon successful device authentication, the AP fully opens its controlled port to permit the exchange of traffic through that port with the mobile wireless communications device.
    Type: Grant
    Filed: May 13, 2003
    Date of Patent: October 16, 2012
    Assignee: Thomson Licensing
    Inventors: Charles Chuanming Wang, Sachin Satish Mody, Junbiao Zhang, Kumar Ramaswamy
  • Patent number: 8289937
    Abstract: There is provided a method for supporting an internetworking between a WLAN and a mobile communications network. The mobile communications network, for example UMTS network, has a GPRS support node and a serving GPRS support node. The internetworking is facilitated by an IWF. The method comprises the steps of establishing at least one GPRS tunneling protocol tunnel between the IWF and the GGSN for transferring data signals, and establishing at least one GPRS (tunneling protocol tunnel between the GGSN and the SGSN for transferring control signals.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: October 16, 2012
    Assignee: Thomson Licensing
    Inventors: Shaily Verma, Charles Chuanming Wang
  • Publication number: 20120253814
    Abstract: A system and method for aggregating text-based content and presenting the text-based content as spoken audio is described herein, where a server module retrieves and aggregates web content from web content providers that may include text-based web content that is then extracted, filtered and categorizes for a client module to retrieve and play as spoken audio.
    Type: Application
    Filed: December 2, 2011
    Publication date: October 4, 2012
    Applicant: Harman International (Shanghai) Management Co., Ltd.
    Inventors: Charles Chuanming Wang, Yong Ling
  • Publication number: 20120134423
    Abstract: Modern coding and modulation techniques have greatly improved the transmission of signals. A method is described including receiving a stream of data bits, demultiplexing the stream into a first and second substream, encoding the first and second substream using a low density parity check coding process, and mapping the first substream to a first region of a symbol constellation map and the second substream to a second region. Also, an apparatus is described including a demultiplexer that produces a first and second bitstream, a first encoder that encodes the first substream using a low density parity check coding process at a first encoding rate, a second encoder that encodes the second substream at a second rate, and a symbol mapper that maps bits from the first substream to a first region of a symbol constellation map and maps bits from the second substream to a second region.
    Type: Application
    Filed: July 20, 2010
    Publication date: May 31, 2012
    Inventors: Wei Zhou, Li Zou, Yuping Zhao, Xiaoxin Zhang, Peng Liu, Charles Chuanming Wang
  • Publication number: 20120134446
    Abstract: Modem coding and modulation techniques have greatly improved the transmission and reception of signals. A method is described including receiving a signal de-mapping the signal into a first and second substream, decoding the first and second substream using a low density parity check decoding process, and combining the first and second decoded substream into a single data stream. An apparatus is described including a symbol de-mapper that receives a signal de-maps the modulation symbols in the signal into a first and second substream, a first decoder that decodes the first substream using a low density parity check coding process at a first decoding rate, a second decoder that decodes the second substream at a second encoding rate, and a combiner that combines the first substream and the second substream into a single data stream.
    Type: Application
    Filed: July 20, 2010
    Publication date: May 31, 2012
    Inventors: Wei Zhou, Li Zou, Yuping Zhao, Xiaoxin Zhang, Peng Liu, Charles Chuanming Wang
  • Patent number: 8165061
    Abstract: There is provided a method of supporting an interworking between a wireless local area network (WLAN) and a mobile communications network. The interworking is facilitated by an interworking function (IWF) disposed on a WLAN side of the interworking. The method comprises the step of connecting the WLAN to the mobile communications network by employing the IWF as an auxiliary radio network controller for the mobile communications network, in particular, a drift radio network controller (DRNC) in a UMTS network.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: April 24, 2012
    Assignee: Thomson Licensing
    Inventors: Shaily Verma, Charles Chuanming Wang
  • Publication number: 20110228855
    Abstract: The invention concerns a device for encoding video data, a device for decoding video data and a digital stream of video data. According to the invention, the encoding device comprises—means for encoding color information related to said video data according to one layer of a scalable model, —means for encoding transformation data enabling to obtain any level of said scalable model of color information from said one layer.
    Type: Application
    Filed: December 25, 2006
    Publication date: September 22, 2011
    Inventors: Yongying Gao, Yuwen Wu, Charles Chuanming Wang
  • Publication number: 20110099449
    Abstract: A method for Forward Error Correction (FEC) encoding in a transmitter, the method comprising: receiving a data stream from a data source; generating a first Forward Error Correction data for respective data block with a first block size of the data stream; and generating a second Forward Error Correction data for respective data block with a second block size of the data stream, wherein the second block size is different with the first block size and wherein the data blocks of the first block size form the data stream, and the data blocks with the second block size form the data stream.
    Type: Application
    Filed: November 4, 2008
    Publication date: April 28, 2011
    Applicant: Thomson Licensing
    Inventors: Jun Li, Xiao Jun Ma, Huan Qiang Zhang, Charles Chuanming Wang
  • Publication number: 20100265864
    Abstract: A method and apparatus for power management in the communication system, wherein the method for transmitting data from an access point to communication units comprising: assigning, by the access point, a first and a second association identifier in a message, to each of the communication units, to indicate the presence of respective buffered multicast data and unicast data respectively; setting, by the access point, the first association identifier to indicate the corresponding communication unit to receive the buffered multicast data, the second association identifier to indicate the corresponding communication unit to receive the buffered unicast data; and transmitting, by the access point, the message to awake the communication unit corresponding to the set first and/or second association identifier so as to transmit the buffered data thereto.
    Type: Application
    Filed: June 7, 2010
    Publication date: October 21, 2010
    Inventors: Yong He, Xiao Jin Ma, Huan Qiang Zhang, Jun Ll, Charles Chuanming Wang
  • Publication number: 20100189021
    Abstract: A method and apparatus for improving power performance of a wireless adapter which adopts a time slicing scheme by dividing a beacon interval into multiple slices, and assigning these slices to the stations through the beacon frame. The stations wakeup at the appointed slices to receive their buffered frames from an access point, and may enter into sleep state once the transactions conclude. A further embodiment including formatting data into a control frame for use in a wireless local area network, the frame including an indication, for each station associated with the wireless local area network, whether frames are buffered awaiting transmission to each respective station, a number of time intervals between control frames, and at which time interval the transmission of the buffered frames will begin for each station having buffered frames awaiting transmission.
    Type: Application
    Filed: February 27, 2007
    Publication date: July 29, 2010
    Applicant: THOMSON BROADBAND R & D (BEIJING) COL. LTD.
    Inventors: Yong He, Xiaojun Ma, Huanqiang Zhang, Jun Li, Charles Chuanming Wang