Patents by Inventor Robert Brownhill
Robert Brownhill 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).
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Patent number: 8705791Abstract: A device such as a set-top-box, digital TV, DVD player, multi-media player, cellular telephone or digital cinema player that may handle data such as multimedia data and/or audio/video signals, may determine its location. The device may determine its location based on GPS information and may send its location it to an external entity, for example, a service provider. The device may generate a watermark comprising its determined location and may embed or insert the watermark within the data. AlsoIn addition, the generated watermark may comprise one or more of a unique identifier for the device, a source of the data, for example, a service provider, a date and a time. The watermark may be secured via processing, for example, the watermark may be encrypted prior to being embedded. The data may be compressed when embedding the watermark. The watermark embedding process may be handled via a secure embedded processor and/or secure code.Type: GrantFiled: August 16, 2012Date of Patent: April 22, 2014Assignee: Broadcom CorporationInventors: Rajesh Mamidwar, Xuemin Chen, Robert Brownhill
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Publication number: 20130011005Abstract: A device such as a set-top-box, digital TV, DVD player, multi-media player, cellular telephone or digital cinema player that may handle data such as multimedia data and/or audio/video signals, may determine its location. The device may determine its location based on GPS information and send it to an external entity, for example, a service provider. The device may generate a watermark comprising its determined location and may embed or insert the watermark within the data. Also, the generated watermark may comprise one or more of a unique identifier for the device, a source of the data, for example, a service provider, a date and a time. The watermark may be secured via processing, for example, the watermark may be encrypted prior to being embedded. The data may be compressed when embedding the watermark. The watermark embedding process may be handled via a secure embedded processor and/or secure code.Type: ApplicationFiled: August 16, 2012Publication date: January 10, 2013Applicant: Broadcom CorporationInventors: Rajesh Mamidwar, Xuemin Chen, Robert Brownhill
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Patent number: 8270664Abstract: A device such as a set-top-box, digital TV, DVD player, multi-media player, cellular telephone or digital cinema player that may handle data such as multimedia data and/or audio/video signals, may determine its location. The device may determine its location based on GPS information and may send its location to an external entity, for example, a service provider. The device may generate a watermark comprising its determined location and may embed or insert the watermark within the data. In addition, the generated watermark may comprise one or more of a unique identifier for the device, a source of the data, for example, a service provider, a date and a time. The watermark may be secured via processing, for example, the watermark may be encrypted prior to being embedded. The data may be compressed when embedding the watermark. The watermark embedding process may be handled via a secure embedded processor and/or secure code.Type: GrantFiled: November 27, 2007Date of Patent: September 18, 2012Assignee: Broadcom CorporationInventors: Rajesh Mamidwar, Xuemin Chen, Robert Brownhill
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Publication number: 20090136081Abstract: A device such as a set-top-box, digital TV, DVD player, multi-media player, cellular telephone or digital cinema player that may handle data such as multimedia data and/or audio/video signals, may determine its location. The device may determine its location based on GPS information and may send its location to an external entity, for example, a service provider. The device may generate a watermark comprising its determined location and may embed or insert the watermark within the data. In addition, the generated watermark may comprise one or more of a unique identifier for the device, a source of the data, for example, a service provider, a date and a time. The watermark may be secured via processing, for example, the watermark may be encrypted prior to being embedded. The data may be compressed when embedding the watermark. The watermark embedding process may be handled via a secure embedded processor and/or secure code.Type: ApplicationFiled: November 27, 2007Publication date: May 28, 2009Inventors: Rajesh Mamidwar, Xuemin Chen, Robert Brownhill
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Patent number: 7502475Abstract: Certain aspects of the invention for producing a secure key may comprise a secure key generator that receives a first, second and third input keys and utilizes these keys to generate a first output key. The first, second and third input keys may be a customer key, customer key selection and key variation, respectively. The first output key may be generated so that it is unique, differs from the first input key and is not a weak or semi-weak key. The first, second and third input keys may be mapped to generate mapped output key data and an intermediate key generated based on the first input key. The intermediate key and the output key data may be scrambled to create a scrambled output. At least a portion of the output key data may be masked and XORed with the scrambled output to generate the first output key.Type: GrantFiled: November 14, 2003Date of Patent: March 10, 2009Assignee: Broadcom CorporationInventors: Sherman (Xuemin) Chen, Iue-Shuenn Chen, Robert Brownhill, Wade K. Wan
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Publication number: 20060020746Abstract: Methods and systems for processing multi-stage programming (MSP) bits within one-time-programmable (OTP) memory are disclosed herein. Aspects of the method may comprise determining whether at least one MSP memory bit in the OTP memory is programmed and whether a register bit associated with said at least one MSP memory bit is asserted. If the register bit is deasserted and the MSP memory bit is unprogrammed, the MSP memory bit may be programmed. The register bit in the OTP memory may be associated with the MSP memory bit. The MSP memory bit may be programmed to logic zero or logic one. If the register bit associated with the MSP memory bit is asserted, programming of the MSP memory bit may be blocked. The register bit associated with the MSP memory bit may be reset and it may be determined whether the MSP memory bit is accessed.Type: ApplicationFiled: December 22, 2004Publication date: January 26, 2006Inventors: Robert Brownhill, Iue-Shuenn Chen, Tony Turner
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Publication number: 20050105736Abstract: Certain aspects of the invention for producing a secure key may comprise a secure key generator that receives a first, second and third input keys and utilizes these keys to generate a first output key. The first, second and third input keys may be a customer key, customer key selection and key variation, respectively. The first output key may be generated so that it is unique, differs from the first input key and is not a weak or semi-weak key. The first, second and third input keys may be mapped to generate mapped output key data and an intermediate key generated based on the first input key. The intermediate key and the output key data may be scrambled to create a scrambled output. At least a portion of the output key data may be masked and XORed with the scrambled output to generate the first output key.Type: ApplicationFiled: November 14, 2003Publication date: May 19, 2005Inventors: Sherman Chen, Iue-Shuenn Chen, Robert Brownhill, Wade Wan
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Patent number: 5875189Abstract: The present invention pertains to a method for multicasting ATM cells. The method comprises the steps of reading a first ATM cell to which a first cell read pointer is pointing. Then there is the step of transmitting the first ATM cell out a first port to a first address. Next there is the step of determining whether the first ATM cell is to be transmitted out the first port to a second address. Next there is the step of reading a cell pointer pointing to a second ATM cell if the transmission of the first ATM cell out the first port to addresses is completed. The present invention pertains to a multicast system for an ATM network. The multicast system is comprised of a first ATM cell pointer mechanism associated with a first port. The multicast system also comprises at least a second ATM cell pointer mechanism associated with a second port. The multicast system is also comprised of at least a first ATM cell.Type: GrantFiled: October 27, 1994Date of Patent: February 23, 1999Assignee: FORE Systems, Inc.Inventors: Robert Brownhill, Jon C. R. Bennett
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Patent number: 5528588Abstract: A linked list for multicast in an ATM network. The linked list comprises a first cell. The linked list also comprises a plurality of read pointers. Each read pointer is associated with a port. Each read pointer points to the first cell. A multicast system for an ATM network. The system comprises a first port through which a cell passes. The system also comprises a first read pointer associated with the first port. The multicast system additionally comprises at least a second port through which the cell passes. There is at least a second read pointer associated with the second port. The multicast system is comprised of a cell to which each read pointer points. Furthermore, the multicast system is comprised of a controller for controlling when a read pointer reads a cell. The system preferably includes a plurality of cells. Each cell has a cell pointer pointing to a next cell. The plurality of cells forms a linked list.Type: GrantFiled: September 14, 1994Date of Patent: June 18, 1996Assignee: Fore Systems, Inc.Inventors: Jon C. R. Bennett, Robert Brownhill