Patents by Inventor Xuemin (Sherman) Chen

Xuemin (Sherman) Chen 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).

  • Patent number: 9767319
    Abstract: A SoC may be utilized to authenticate access to one or more secure functions. A password may be generated within the SoC which is unique to each SoC instance and unique to each iteration of authentication. The SoC may challenge external entities attempting access to provide a matching password. A random number sample may be generated within the SoC and stored. A chip ID, secret word and a table of keys with key indices are also stored in memory. Two or more of the stored items may be passed to a hash function to generate the password. The external entity may generate and return the password utilizing information communicated from the SoC during each authentication operation as well as information known a priori. The SoC may compare the returned password with the internally generated password and may grant access to the secure functions.
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: September 19, 2017
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventor: Xuemin (Sherman) Chen
  • Patent number: 9705890
    Abstract: A media processing device, such as a set top box, having a plurality of selectable hardware and software components for supporting multiple media pathways providing differing levels of security. In general, each security level corresponds to a particular certification service boundary definition(s) or key/authentication and security management scheme for managing resources such as hardware acceleration blocks and software interfaces. Different sets of components may be adaptively employed to ensure composited compliance with one or more security constraints and to address component unavailability. Security constraints may be applied, for example, on a source or media specific basis, and different versions of a media item may be provided over multiple pathways providing corresponding levels of security. In one embodiment, a service operator or content provider may provide requisite certification or security requirements, or otherwise assist in selection of pathway components.
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: July 11, 2017
    Assignee: BROADCOM CORPORATION
    Inventor: Xuemin (Sherman) Chen
  • Patent number: 9652637
    Abstract: Aspects of a method and system for allowing no code download in a code download scheme are provided. A system-on-a-chip (SoC) may comprise a security processor, a ROM, and a one-time-programmable (OTP) memory. The security processor may enable fetching code from a restricted function portion of the ROM. The restricted functions may comprise code for booting up the SoC and code that prevents enabling security algorithms within the SoC. The security processor may then enable booting up of at least a portion of the SoC based on the fetched code. The remaining portion of the ROM may comprise code for downloading security code from an external memory, such as a FLASH memory, to an internal memory, such as a RAM, to boot up the SoC. Access to the restricted function portion or the remaining portion of the ROM is based on at least one bit from the OTP memory.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: May 16, 2017
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Andrew Dellow, Iue-Shuenn Chen, Stephane (Steve) Rodgers, Xuemin (Sherman) Chen
  • Patent number: 9553898
    Abstract: Gateway based and centric network management and coordination. Coordination and management of delivery of a source sequence, that has possibly undergone adaptive bit rate (ABR) encoding upstream to generate a number of respective fragments that may have different respective bit rates associated therewith, to one or more downstream, user, or client devices is achieved via appropriate communication network management and coordination performed by one or more communication devices within the system. In one instance, a home gateway communication device operates to perform such coordination management of a convergent network or convergent digital home network (CDHN). Consideration of any one or more local and/or remote conditions, parameters, etc. may be employed by such an application to ensure effective delivery of a source sequence to one or more client devices.
    Type: Grant
    Filed: May 24, 2015
    Date of Patent: January 24, 2017
    Assignee: BROADCOM CORPORATION
    Inventors: Xuemin (Sherman) Chen, Avi Kliger, Philippe Klein
  • Patent number: 9503777
    Abstract: Aspects of a method and system for unified start code emulation prevention bits processing for AVS are provided. A Start code emulation prevention bit string with an arbitrary bit string length, for example 2 bits, may be inserted into AVS encoded data. When decoding, the received AVS encoded data may be parsed to identify the start code emulation prevention bit string and start codes. A bit processor may be signaled with the detection of the start code emulation prevention bit string and/or the start codes. The bit processor may remove the start code emulation prevention bit string in a decoding process and store the detected start codes for applications such as PVR. Constraints may be added to streams such as unbounded PES and/or TS with PUSI bit unset for further bit processing.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: November 22, 2016
    Assignee: BROADCOM CORPORATION
    Inventors: Xuemin (Sherman) Chen, Zhijie (Michael) Yang
  • Patent number: 9473939
    Abstract: Aspects of a method and system for service mobility via a femtocell infrastructure are provided. In this regard, a mobile cellular enabled communication device may detect a femtocell operable to deliver content for one or more services to the mobile cellular enabled communication device, where the one or more services may be provided via a set-top-box communicatively coupled to the femtocell. The mobile cellular enabled communication device may communicate a user profile to the femtocell, wherein information in the profile may be utilized by the set-top-box to authenticate and/or authorize access to the services by the mobile cellular enabled communication device and thus the mobile cellular enabled communication device may receive the content from the set-top-box based on the authentication and/or authorization. The content may comprise voice, video, data, text and/or still images.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: October 18, 2016
    Assignee: Broadcom Corporation
    Inventors: Jeyhan Karaoguz, Charles Abraham, Xuemin Sherman Chen, Wael William Diab, Vinko Erceg, Victor T. Hou, Mark Kent
  • Patent number: 9462296
    Abstract: A video receiver is operable to receive three-dimensional (3D) video bitstreams from a video transmitter. The received 3D video bitstreams comprises a plurality of video frames and corresponding coding information. The coding information, for example, block motion vectors, block coding modes, quantization levels, and/or quantized residual data, is extracted for performing frame-rate up-conversion on the received plurality of video frames. The coding information is generated at the video transmitter via entropy decoding on a compressed 3D video from a video feed from, for example, an IP TV network. When an uncompressed 3D video is received, the video receiver is operable to perform frame-rate up-conversion on the received uncompressed 3D video using extracted block motion vectors and associated confidence-consistence measure. When a compressed 3D video is received, the video receiver is configured to perform video decompression on the received compressed 3D video prior to the frame-rate up-conversion.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: October 4, 2016
    Assignee: BROADCOM CORPORATION
    Inventors: Xuemin Sherman Chen, Marcus Kellerman
  • Patent number: 9355253
    Abstract: A media processing device, such as a set top box, having selectable hardware and software components for forming media pathways compliant with security definitions provided by downloaded or preinstalled software applications. Such applications may include, for example, a downloadable conditional access security or DRM element/definition. A corresponding certification process can entail certifying a portion of an overall secure pathway, with one or more applications providing the final portion of the certification. Alternatively, predefined conditional access mechanisms are provided, with an application establishing which mechanism is to be used. In various embodiments, a set top box or resident software application may exchange capabilities with other devices in a media consumption network to compare against the requirements of the software application.
    Type: Grant
    Filed: January 3, 2013
    Date of Patent: May 31, 2016
    Assignee: Broadcom Corporation
    Inventors: Marcus C. Kellerman, Xuemin (Sherman) Chen
  • Patent number: 9300813
    Abstract: Aspects of a method and system for controlling access and utilization of femtocells via a network based service are provided. In this regard, a femtocell management entity communicatively coupled to a network and operable to manage one or more femtocells may be accessed via an end-user communication device. In this manner, the femtocell(s) may be managed via the end-user device such as one of the cellular enabled communication devices. The femtocell management entity may enable establishing one or more SLAs between the femtocell(s) and the cellular enabled communication device(s). The SLA(s) may enable the cellular enabled communication device(s) to establish one or more cellular communication channels with the femtocell(s). The SLA(s) may determine when the cellular communication channels may be established. The SLA(s) may determine how a femtocell owner/operator may be compensated for providing cellular service. The femtocell(s) may be accessed utilizing Internet Protocol.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: March 29, 2016
    Assignee: Broadcom Corporation
    Inventors: Charles Abraham, Xuemin Sherman Chen, Wael William Diab, Vinko Erceg, Victor T. Hou, Jeyhan Karaoguz, Mark Kent
  • Patent number: 9294513
    Abstract: Aspects of a method and system for providing emergency-related services via a broadband gateway are provided. In this regard, a broadband gateway may receive one or more emergency notification messages, generate one or more alert messages in response to the received emergency notification message(s), and communicate the alert message(s) to the electronic device(s). Accordingly, each of the one or more alert messages may be formatted for communication to a corresponding one or corresponding ones of the one or more electronic devices. The emergency notification message(s) may be generated by an emergency services provider in response to an emergency. The emergency services provider may send a notification message to the broadband gateway device upon determining that the broadband gateway device, a person associated with the broadband gateway device, and/or a location associated with the broadband gateway device meets particular criteria.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: March 22, 2016
    Assignee: BROADCOM CORPORATION
    Inventors: David Lundgren, Jeyhan Karaoguz, Xuemin (Sherman) Chen, Wael William Diab, David Garrett, Rich Prodan
  • Publication number: 20160065991
    Abstract: A video receiver is operable to receive three-dimensional (3D) video bitstreams from a video transmitter. The received 3D video bitstreams comprises a plurality of video frames and corresponding coding information. The coding information, for example, block motion vectors, block coding modes, quantization levels, and/or quantized residual data, is extracted for performing frame-rate up-conversion on the received plurality of video frames. The coding information is generated at the video transmitter via entropy decoding on a compressed 3D video from a video feed from, for example, an IP TV network. When an uncompressed 3D video is received, the video receiver is operable to perform frame-rate up-conversion on the received uncompressed 3D video using extracted block motion vectors and associated confidence-consistence measure. When a compressed 3D video is received, the video receiver is configured to perform video decompression on the received compressed 3D video prior to the frame-rate up-conversion.
    Type: Application
    Filed: November 9, 2015
    Publication date: March 3, 2016
    Inventors: Xuemin Sherman CHEN, Marcus KELLERMAN
  • Patent number: 9258620
    Abstract: Aspects of a method and system for controlling data distribution via cellular communications with an integrated femtocell and set-top-box (IFSTB) device are provided. In this regard, a cellular enabled communication device may detect when it is within cellular communication range of a femtocell. Upon detection of the femtocell, the cellular enabled communication device may communicate instructions to a content source instructing the content source to deliver multimedia content to the femtocell. In instances that multimedia content is already being delivered to the cellular enabled communication device prior to the detection, the instructions from the cellular enabled communication device may instruct the content source to redirect the multimedia content to the femtocell. In this regard, the multimedia content may be delivered from the content source to the cellular enabled communication device via the femtocell.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: February 9, 2016
    Assignee: Broadcom Corporation
    Inventors: Xuemin (Sherman) Chen, Charles Abraham, Wael William Diab, Vinko Erceg, Victor T. Hou, Jeyhan Karaoguz, Mark Kent
  • Publication number: 20160028739
    Abstract: A media processing device, such as a set top box, having a plurality of selectable hardware and software components for supporting multiple media pathways providing differing levels of security. In general, each security level corresponds to a particular certification service boundary definition(s) or key/authentication and security management scheme for managing resources such as hardware acceleration blocks and software interfaces. Different sets of components may be adaptively employed to ensure composited compliance with one or more security constraints and to address component unavailability. Security constraints may be applied, for example, on a source or media specific basis, and different versions of a media item may be provided over multiple pathways providing corresponding levels of security. In one embodiment, a service operator or content provider may provide requisite certification or security requirements, or otherwise assist in selection of pathway components.
    Type: Application
    Filed: June 1, 2015
    Publication date: January 28, 2016
    Applicant: BROADCOM CORPORATION
    Inventor: Xuemin (Sherman) Chen
  • Patent number: 9226134
    Abstract: Aspects of a method and system for installation and configuration of a femtocell are provided. In this regard, information for configuring a femtocell to operate in a specified location may be received by the femtocell and may be utilized to configure one or more parameters of the femtocell. Once the femtocell is operational the parameters may be updated and/or optimized based on one or both of characterizations of cellular signals and/or information received from a femtocell registry. In this manner the femtocell may be reconfigured utilizing the updated and/or optimized parameters. The one or more parameters may be configured based on attributes of the location in which the femtocell is to operate. The one or more parameters may be configured based on a location, number, and/or coverage area of other femtocells The parameters may comprise one or more of power levels, frequency of operation, and/or antenna beam pattern.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: December 29, 2015
    Assignee: BROADCOM CORPORATION
    Inventors: Mark Kent, Charles Abraham, Xuemin Sherman Chen, Wael William Diab, Vinko Erceg, Victor T. Hou, Jeyhan Karaoguz
  • Patent number: 9185426
    Abstract: A video receiver is operable to receive three-dimensional (3D) video bitstreams from a video transmitter. The received 3D video bitstreams comprises a plurality of video frames and corresponding coding information. The coding information, for example, block motion vectors, block coding modes, quantization levels, and/or quantized residual data, is extracted for performing frame-rate up-conversion on the received plurality of video frames. The coding information is generated at the video transmitter via entropy decoding on a compressed 3D video from a video feed from, for example, an IP TV network. When an uncompressed 3D video is received, the video receiver is operable to perform frame-rate up-conversion on the received uncompressed 3D video using extracted block motion vectors and associated confidence-consistence measure. When a compressed 3D video is received, the video receiver is configured to perform video decompression on the received compressed 3D video prior to the frame-rate up-conversion.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: November 10, 2015
    Assignee: BROADCOM CORPORATION
    Inventors: Xuemin (Sherman) Chen, Marcus Kellerman
  • Publication number: 20150256560
    Abstract: Gateway based and centric network management and coordination. Coordination and management of delivery of a source sequence, that has possibly undergone adaptive bit rate (ABR) encoding upstream to generate a number of respective fragments that may have different respective bit rates associated therewith, to one or more downstream, user, or client devices is achieved via appropriate communication network management and coordination performed by one or more communication devices within the system. In one instance, a home gateway communication device operates to perform such coordination management of a convergent network or convergent digital home network (CDHN). Consideration of any one or more local and/or remote conditions, parameters, etc. may be employed by such an application to ensure effective delivery of a source sequence to one or more client devices.
    Type: Application
    Filed: May 24, 2015
    Publication date: September 10, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Xuemin (Sherman) Chen, Avi Kliger, Philippe Klein
  • Publication number: 20150244875
    Abstract: Aspects of a method and system for controlling access and utilization of femtocells via a network based service are provided. In this regard, a femtocell management entity communicatively coupled to a network and operable to manage one or more femtocells may be accessed via an end-user communication device. In this manner, the femtocell(s) may be managed via the end-user device such as one of the cellular enabled communication devices. The femtocell management entity may enable establishing one or more SLAs between the femtocell(s) and the cellular enabled communication device(s). The SLA(s) may enable the cellular enabled communication device(s) to establish one or more cellular communication channels with the femtocell(s). The SLA(s) may determine when the cellular communication channels may be established. The SLA(s) may determine how a femtocell owner/operator may be compensated for providing cellular service. The femtocell(s) may be accessed utilizing Internet Protocol.
    Type: Application
    Filed: May 13, 2015
    Publication date: August 27, 2015
    Inventors: Charles Abraham, Xuemin Sherman Chen, Wael William Diab, Vinko Erceg, Victor T. Hou, Jeyhan Karaoguz, Mark Kent
  • Publication number: 20150195613
    Abstract: Aspects of a method and system for data processing in a device with integrated set-top-box and femtocell functionality are provided. Data may be received via an integrated femtocell and set-top-box device and may be synchronously processed, utilizing a common clock, to perform one or more femtocell functions and/or set-top-box functions. The common clock may be derived from global navigation satellite system signals. The integrated femtocell and set-top-box device may convert the received data from a first to a second format. The converted data may be transmitted to a cellular enabled communication device via a cellular transmitter within said integrated femtocell and set-top-box device and/or to a multimedia device via a multimedia interface within said integrated femtocell and set-top-box device. The received data may comprise multimedia content.
    Type: Application
    Filed: March 23, 2015
    Publication date: July 9, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Victor T. HOU, Xuemin Sherman Chen, Charles Abraham, Wael William Diab, Vinko Erceg, Jeyhan Karaoguz, Mark Kent
  • Patent number: 9060098
    Abstract: Aspects of a method and system for data processing in a device with integrated set-top-box and femtocell functionality are provided. Data may be received via an integrated femtocell and set-top-box device and may be synchronously processed, utilizing a common clock, to perform one or more femtocell functions and/or set-top-box functions. The common clock may be derived from global navigation satellite system signals. The integrated femtocell and set-top-box device may convert the received data from a first to a second format. The converted data may be transmitted to a cellular enabled communication device via a cellular transmitter within said integrated femtocell and set-top-box device and/or to a multimedia device via a multimedia interface within said integrated femtocell and set-top-box device. The received data may comprise multimedia content.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: June 16, 2015
    Assignee: Broadcom Corporation
    Inventors: Victor T. Hou, Xuemin Sherman Chen, Charles Abraham, Wael William Diab, Vinko Erceg, Jeyhan Karaoguz, Mark Kent
  • Patent number: 9049208
    Abstract: A media processing device, such as a set top box, having a plurality of selectable hardware and software components for supporting multiple media pathways providing differing levels of security. In general, each security level corresponds to a particular certification service boundary definition(s) or key/authentication and security management scheme for managing resources such as hardware acceleration blocks and software interfaces. Different sets of components may be adaptively employed to ensure composited compliance with one or more security constraints and to address component unavailability. Security constraints may be applied, for example, on a source or media specific basis, and different versions of a media item may be provided over multiple pathways providing corresponding levels of security. In one embodiment, a service operator or content provider may provide requisite certification or security requirements, or otherwise assist in selection of pathway components.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: June 2, 2015
    Assignee: Broadcom Corporation
    Inventor: Xuemin (Sherman) Chen