Patents by Inventor Robert C. Chang

Robert C. Chang 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: 20240080385
    Abstract: A method includes, at a computer system with a display and a housing, while a call is ongoing between the computer system and a remote device, detecting a coupling of a case to the computer system, and in response to detecting the coupling of the case to the computer system, in accordance with a determination that the computer system is operating in a first audio mode, continuing the call, and, in accordance with a determination that the computer system is operating in a second audio mode different than the first audio mode, terminating the call.
    Type: Application
    Filed: November 13, 2023
    Publication date: March 7, 2024
    Inventors: Jae Woo Chang, Arian Behzadi, Deena Khattab, Robert Garcia, III, Lauren E. Tappana, Marcel Van Os, Alan C. Dye
  • Patent number: 9032154
    Abstract: Techniques are presented for sending an application instruction from a hosting digital appliance to a portable medium, where the instruction is structured as one or more units whose size is a first size, or number of bytes. After flushing the contents of a cache, the instruction is written to the cache, where the cache is structured as logical blocks having a size that is a second size that is larger (in terms of number of bytes) than the first size. In writing the instruction (having a command part and, possibly, a data part), the start of the instruction is aligned with one of the logical block boundaries in the cache and the instruction is padded out with dummy data so that it fills an integral number of the cache blocks. When a response from a portable device to an instruction is received at a hosting digital appliance, the cache is similarly flushed prior to receiving the response. The response is then stored to align with a logical block boundary of the cache.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: May 12, 2015
    Assignee: SanDisk Technologies Inc.
    Inventors: Xian Jun Liu, Robert C. Chang, Po Yuan, Junzhi Wang, Ron Barzilai, Bahman Qawami, Farshid Sabet-Sharghi
  • Patent number: 8984645
    Abstract: A first storage unit is bound to a second storage unit based on a binding type associated with content on the first storage unit, the first storage unit being operated through a first host device, and the second storage unit being operated through a second host device. When content on the first storage unit is requested in the first host device, the first host device will calculate an account identifier based on the binding type associated with the requested content and send the account identifier to a server. The server will send the account identifier to the second host device, and the second storage unit will use the account identifier to calculate a credential. The credential will be sent to the first host device through the server. The credential can be used to access the requested content if the credential is valid.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: March 17, 2015
    Assignee: SanDisk Technologies Inc.
    Inventors: Mei Yan, Robert C. Chang, Farshid Sabet-Sharghi, Po Yuan, Bahman Qawami
  • Patent number: 8913750
    Abstract: One or more rights objects (RO) files may be used for storing RO's preferably in the protected area available only to authenticated users. A RO navigation file is stored preferably in an unprotected public area containing status bits, where each status bit identifies whether a location in a RO file contains a valid RO or not. Preferably, there is a one-to-one correspondence between the location for a RO in a RO file and a location in the RO navigation file for the status bit which identifies whether its corresponding location in the RO file contains a valid RO or not. Whether a particular location in a RO file contains a valid RO or not can be found by checking its corresponding status bit in the RO navigation file.
    Type: Grant
    Filed: February 20, 2012
    Date of Patent: December 16, 2014
    Assignee: SanDisk Technologies Inc.
    Inventors: Oktay Rasizade, Bahman Qawami, Fabrice Jogand-Coulomb, Robert C. Chang, Farshid Sabet-Sharghi
  • Patent number: 8868929
    Abstract: In one embodiment, a method for managing information in a large capacity UICC is provided comprising storing content of a file in a mass storage file system of the large capacity UICC, associating the file in the mass storage file system with a file in an ISO file system of the large capacity UICC, wherein the ISO file is associated with a security configuration defining security requirements for allowing its access; and hiding the content of the file in the mass storage file system in order to make it inaccessible. The method can further comprise requesting access from the mass storage file system to content of a file in the mass storage file system; and, if hidden, delivering security requirements to the ISO file system and determining whether the delivered security requirements agree with the security configuration of the file in the ISO file system associated with the file in the mass storage file system; and, if so, revealing the content to make it accessible.
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: October 21, 2014
    Assignee: Microelectronica Espanola S.A.U.
    Inventors: Javier Canis Robles, Robert C. Chang
  • Patent number: 8719709
    Abstract: A method for interfacing with a memory card is provided. In this method, a selection of a program instruction is provided and the program instruction associated with the selection is read from the memory card. The program instruction thereafter is executed. Systems and computing devices for interfacing with the memory card also are described.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: May 6, 2014
    Assignee: SanDisk Technologies Inc.
    Inventors: Fabrice Jogand-Coulomb, Robert C. Chang
  • Patent number: 8706990
    Abstract: Methods and apparatus for allowing tables to be adaptively backed up are disclosed. According to one aspect of the present invention, a method for operating a memory system with a non-volatile memory that includes a reserved memory area, a plurality of physical blocks and a plurality of data structures including an erase count block involves determining when contents associated with at least one data structure of the plurality of data structures are to be substantially backed up. A request to substantially back up the contents associated with the at least one data structure is executed when it is determined that the contents associated with the at least one data structure are to be substantially backed up. Executing the request allows contents associated with the at least one data structure are substantially backed up in the reserved memory area.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: April 22, 2014
    Assignee: SanDisk Technologies Inc.
    Inventors: Robert C. Chang, Bahman Qawami, Farshid Sabet-Sharghi
  • Patent number: 8580546
    Abstract: A method for fabricating a micro-organ device comprises providing a microscale support having one or more microfluidic channels and one or more micro-chambers for housing a micro-organ and printing a micro-organ on the microscale support using a cell suspension in a syringe controlled by a computer-aided tissue engineering system, wherein the cell suspension comprises cells suspended in a solution containing a material that functions as a three-dimensional scaffold. The printing is performed with the computer-aided tissue engineering system according to a particular pattern. The micro-organ device comprises at least one micro-chamber each housing a micro-organ; and at least one microfluidic channel connected to the micro-chamber, wherein the micro-organ comprises cells arranged in a configuration that includes microscale spacing between portions of the cells to facilitate diffusion exchange between the cells and a medium supplied from the at least one microfluidic channel.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: November 12, 2013
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Steve R. Gonda, Robert C. Chang, Binil Starly, Christopher Culbertson, Heidi L. Holtorf, Wei Sun, Julia Leslie
  • Patent number: 8443208
    Abstract: A secure software package for original equipment manufacturers to run in electronic devices in order to access and dynamically decrypt encrypted audio video or other content from a memory storage device such as a memory card, optical or hard disk such that the user interface of the device need only send simple commands and the decrypted content is output.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: May 14, 2013
    Assignee: SanDisk Technologies Inc.
    Inventors: Farshid Sabet-Sharghi, Bahman Qawami, Robert C. Chang
  • Patent number: 8428649
    Abstract: Technology for replacing a first storage unit operatively coupled to a device is provided. Content of the first storage unit is sent to a new storage unit that serves as the replacement of the first storage unit. In one embodiment, the content is first sent to a trusted third-party server and then transferred from the server to the new storage unit. A portion of the content on the new storage unit is adjusted in one embodiment to maintain content security features that were implemented in the first storage unit. The upgrading can be performed under the control of a software entity that is installed on the device. In various embodiments, the first storage unit may be bound to a third storage unit prior to the upgrade process. In such cases, the process can include measures to bind the new storage unit to the third storage unit.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: April 23, 2013
    Assignee: SanDisk Technologies Inc.
    Inventors: Mei Yan, Robert C. Chang, Farshid Sabet-Sharghi, Po Yuan, Bahman Qawami
  • Patent number: 8412879
    Abstract: Methods and apparatus for using different error correction code algorithms to encode and to decode contents of blocks within a non-volatile memory are disclosed. According to one aspect of the present invention, a method for storing data within a non-volatile memory includes identifying a first block into which the data is to be stored, and obtaining an indicator associated with the first block. A determination may then be made regarding whether the indicator indicates that the data is to be encoded using a first algorithm. The data is encoded using the first algorithm when it is determined that the data is to be encoded using the first algorithm, after which point the data encoded using the first algorithm is written into the first block.
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: April 2, 2013
    Assignee: SanDisk Technologies Inc.
    Inventors: Robert C Chang, Bahman Qawami, Farshid Sabet-Sharghi
  • Patent number: 8351609
    Abstract: One or more rights objects (RO) files may be used for storing RO's preferably in the protected area available only to authenticated users. A RO navigation file is stored preferably in an unprotected public area containing status bits, where each status bit identifies whether a location in a RO file contains a valid RO or not. Preferably, there is a one-to-one correspondence between the location for a RO in a RO file and a location in the RO navigation file for the status bit which identifies whether its corresponding location in the RO file contains a valid RO or not. Whether a particular location in a RO file contains a valid RO or not can be found by checking its corresponding status bit in the RO navigation file. By finding out whether a particular location in a RO file contains a valid RO or not in this manner, it is possible to delete ROs without having to go through an authentication process. The process of finding an empty slot in the RO file for storing a new RO is also simplified.
    Type: Grant
    Filed: May 5, 2010
    Date of Patent: January 8, 2013
    Assignee: SanDisk Technologies Inc.
    Inventors: Oktay Rasizade, Bahman Qawami, Fabrice Jogand-Coulomb, Robert C. Chang, Farshid Sabet-Sharghi
  • Patent number: 8343740
    Abstract: A method for fabricating a micro-organ device comprises providing a microscale support having one or more microfluidic channels and one or more micro-chambers for housing a micro-organ and printing a micro-organ on the microscale support using a cell suspension in a syringe controlled by a computer-aided tissue engineering system, wherein the cell suspension comprises cells suspended in a solution containing a material that functions as a three-dimensional scaffold. The printing is performed with the computer-aided tissue engineering system according to a particular pattern. The micro-organ device comprises at least one micro-chamber each housing a micro-organ; and at least one microfluidic channel connected to the micro-chamber, wherein the micro-organ comprises cells arranged in a configuration that includes microscale spacing between portions of the cells to facilitate diffusion exchange between the cells and a medium supplied from the at least one microfluidic channel.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: January 1, 2013
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Steve R. Gonda, Iris von Gustedt-Gonda, legal representative, Robert C. Chang, Binil Starly, Christopher Culbertson, Heidi L. Holtorf, Wei Sun, Julia Leslie
  • Publication number: 20120331208
    Abstract: Methods and apparatus for allowing tables to be adaptively backed up are disclosed. According to one aspect of the present invention, a method for operating a memory system with a non-volatile memory that includes a reserved memory area, a plurality of physical blocks and a plurality of data structures including an erase count block involves determining when contents associated with at least one data structure of the plurality of data structures are to be substantially backed up. A request to substantially back up the contents associated with the at least one data structure is executed when it is determined that the contents associated with the at least one data structure are to be substantially backed up. Executing the request allows contents associated with the at least one data structure are substantially backed up in the reserved memory area.
    Type: Application
    Filed: March 30, 2012
    Publication date: December 27, 2012
    Inventors: Robert C. Chang, Bahman Qawami, Farshid Sabet-Sharghi
  • Patent number: 8296752
    Abstract: Methods and apparatus for efficiently enabling firmware associated with a flash memory card to be updated are disclosed. According to one aspect of the present invention, a method for updating firmware associated with a memory storage device includes providing new firmware to a host and sending the new firmware from the host to a reader which communicates with the host. The reader interfaces with the memory storage device which includes installed firmware. The method also includes sending the new firmware from the reader to the memory storage device, and incorporating the new firmware into the memory storage device such that the new firmware at least partially replaces the installed firmware. In one embodiment, the method further includes embedding the new firmware into a first command. In such an embodiment, sending the new firmware from the host to the reader includes sending the first command from the host to the reader.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: October 23, 2012
    Assignee: SanDisk Technologies, Inc.
    Inventors: Robert C. Chang, Ping Li, Farshid Sabet-Sharghi
  • Publication number: 20120159644
    Abstract: One or more rights objects (RO) files may be used for storing RO's preferably in the protected area available only to authenticated users. A RO navigation file is stored preferably in an unprotected public area containing status bits, where each status bit identifies whether a location in a RO file contains a valid RO or not. Preferably, there is a one-to-one correspondence between the location for a RO in a RO file and a location in the RO navigation file for the status bit which identifies whether its corresponding location in the RO file contains a valid RO or not. Whether a particular location in a RO file contains a valid RO or not can be found by checking its corresponding status bit in the RO navigation file. By finding out whether a particular location in a RO file contains a valid RO or not in this manner, it is possible to delete ROs without having to go through an authentication process. The process of finding an empty slot in the RO file for storing a new RO is also simplified.
    Type: Application
    Filed: February 20, 2012
    Publication date: June 21, 2012
    Inventors: Oktay Rasizade, Bahman Qawami, Fabrice Jogand-Coulomb, Robert C. Chang, Farshid Sabet-Sharghi
  • Patent number: 8156563
    Abstract: One or more rights objects (RO) files may be used for storing RO's preferably in the protected area available only to authenticated users. A RO navigation file is stored preferably in an unprotected public area containing status bits, where each status bit identifies whether a location in a RO file contains a valid RO or not. Preferably, there is a one-to-one correspondence between the location for a RO in a RO file and a location in the RO navigation file for the status bit which identifies whether its corresponding location in the RO file contains a valid RO or not. Whether a particular location in a RO file contains a valid RO or not can be found by checking its corresponding status bit in the RO navigation file. By finding out whether a particular location in a RO file contains a valid RO or not in this manner, it is possible to delete ROs without having to go through an authentication process. The process of finding an empty slot in the RO file for storing a new RO is also simplified.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: April 10, 2012
    Assignee: SanDisk Technologies Inc.
    Inventors: Oktay Rasizade, Bahman Qawami, Fabrice Jogand-Coulomb, Robert C. Chang, Farshid Sabet-Sharghi
  • Patent number: 8069298
    Abstract: Methods of storing and accessing data using a header portion of a file are disclosed. In an embodiment, a method of storing content in a non-volatile memory is disclosed. The method includes reading a content file including media content and including a trailer, storing information related to the trailer together with secure data in a header portion of a file, and storing the file to a storage element of the non-volatile memory or a memory area of a host device coupled to the non-volatile memory device.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: November 29, 2011
    Assignee: SanDisk Technologies Inc.
    Inventors: Robert C. Chang, Po Yuan, Bahman Qawami, Farshid Sabet-sharghi, Junzhi Wang, Xian Jun Liu, Chieh-Hao Yang, June Li, Mei Yan, Fabrice Jogand-Coulomb
  • Publication number: 20110207671
    Abstract: The present invention relates to double-crosslinked collagen materials, methods for preparing double-crosslinked collagen materials, and methods of using double-crosslinked
    Type: Application
    Filed: August 21, 2009
    Publication date: August 25, 2011
    Applicant: FibroGen, Inc.
    Inventors: Robert C. Chang, David R. Olsen, Jame W. Polarek, Kim E. Williams
  • Patent number: RE46023
    Abstract: Technology for replacing a first storage unit operatively coupled to a device is provided. Content of the first storage unit is sent to a new storage unit that serves as the replacement of the first storage unit. In one embodiment, the content is first sent to a trusted third-party server and then transferred from the server to the new storage unit. A portion of the content on the new storage unit is adjusted in one embodiment to maintain content security features that were implemented in the first storage unit. The upgrading can be performed under the control of a software entity that is installed on the device. In various embodiments, the first storage unit may be bound to a third storage unit prior to the upgrade process. In such cases, the process can include measures to bind the new storage unit to the third storage unit.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: May 31, 2016
    Assignee: SanDisk Technologies Inc.
    Inventors: Mei Yan, Robert C Chang, Farshid Sabet-Sharghi, Po Yuan, Bahman Qawami