Brian R Walker

US Patent:

6785401, Aug 31, 2004

Filed:

Apr 9, 2001

Appl. No.:

09/829560

Inventors:

Brian R. Walker - Beaverton OR
Daniel G. Baker - Beaverton OR

Assignee:

Tektronix, Inc. - Beaverton OR

International Classification:

G06K 900

US Classification:

382100, 348515, 348521, 348533

Abstract:

A method of synchronizing a watermark decoder with a watermark encoder uses a spatio-temporal (3D) synchronization pattern added to a data pattern to produce a watermark pattern for embedment into a signal. The spatio-temporal synchronization pattern is formed by multiplying a spatial (2D) synchronization pattern with a pseudo-noise sequence for a block of signal frames having a duration of N frames. Quadrature carrier modulation may be used to increase detectability of the watermark pattern at the watermark decoder. The watermarked signal is correlated with the spatial synchronization pattern to recover a temporal synchronization signal that is used to determine a temporal offset between the watermark encoder and watermark decoder. The temporal offset is then used to synchronize the watermark decoder with the watermark encoder. Once synchronized various applications may be implemented using the spatial synchronization pattern, and error correction may be applied to the data pattern as well as the addition of a low data rate channel using Walsh codes.

US Patent:

7617242, Nov 10, 2009

Filed:

Mar 25, 2005

Appl. No.:

11/090544

Inventors:

Keisuke Matsuo - Nara, JP
Hiroshi Kase - Osaka, JP
Kevin Leigh La Chapelle - Redmond WA, US
Ian Cameron Mercer - Sammammish WA, US
Brian James Walker - Duvall WA, US

Assignee:

Panasonic Corporation - Osaka

International Classification:

G06F 7/00

US Classification:

7071041

Abstract:

A recording and reproducing system includes a DVD-RAM medium having a plurality of data files of storing predetermined data, file recording means of recording, in a play list file held by the DVD-RAM medium, a play list of describing reproduction order of reproducing the predetermined data stored in each of all or a part of the data files out of the plurality of data files by using a file name of the data file and a unique directory ID provided to a directory to which the data file belongs, and file reproducing means of reproducing the predetermined data stored by each of all or a part of the data files out of the plurality of data files based on the recorded play list.

US Patent:

7640552, Dec 29, 2009

Filed:

Oct 29, 2004

Appl. No.:

10/976562

Inventors:

Kristen Miller - Kirkland WA, US
Brian James Walker - Redmond WA, US
Gareth Alan Howell - Bothell WA, US
Ian Cameron Mercer - Sammamish WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 9/54
G06F 15/16

US Classification:

719320, 709226

Abstract:

Providing resiliency to a multimedia application. A list of filters associated with the multimedia application is identified. It is determined if one or more filters of the identified list of filters are suitable for the multimedia application. The one or more filters are disabled if the one or more filters are determined to be unsuitable for the multimedia application. The one or more filters of the list of filters may also be presented to a user of the multimedia application as a function of suitability of each of the list of filters for the multimedia application. The user is allowed to manage the presented one or more filters.

US Patent:

7668842, Feb 23, 2010

Filed:

Jun 28, 2005

Appl. No.:

11/168060

Inventors:

Kevin Leigh LaChapelle - Redmond WA, US
Brian James Walker - Duvall WA, US
Ian Cameron Mercer - Sammamish WA, US
Hiroshi Kase - Moriguchi, JP
Harutoshi Miyamoto - Ibaraki, JP
Tomotaka Yagi - Nishinomiya, JP
Yasuyuki Torii - Yawata, JP
Nobuyasu Takeguchi - Kawachinagano, JP

Assignee:

Microsoft Corporation - Redmond WA
Panasonic Corporation - Osaka

International Classification:

G06F 17/00
G06F 7/00

US Classification:

707100, 707101, 707102

Abstract:

Enabling efficient navigation of a playlist of media files stored on a computer-readable medium. Aspects of the invention define a playlist structure to have one or more playlist units. Each playlist unit identifies one or more media files in the playlist and includes metadata for the media files. A consumer electronic device retrieves the playlist units and displays the metadata contained therein to a user to enable navigation of the playlist. Aspects of the invention reduce the memory requirements of the consumer electronic devices and reduce the quantity of disk seek operations needed for playlist navigation.

US Patent:

7707231, Apr 27, 2010

Filed:

Jun 28, 2005

Appl. No.:

11/167963

Inventors:

Kevin Leigh LaChapelle - Redmond WA, US
Brian James Walker - Duvall WA, US
Ian Cameron Mercer - Sammamish WA, US
Hiroshi Kase - Moriguchi, JP
Keisuke Matsuo - Ikoma, JP
Sako Asayama - Ikoma, JP

Assignee:

Microsoft Corporation - Redmond WA
Panasonic Corporation - Osaka

International Classification:

G06F 17/30

US Classification:

707804, 707610

Abstract:

Updating automatically generated playlists in response to media content being edited. Aspects of the invention associate a playlist type or other code with each playlist to define the structure of the playlist. When media content is added to or deleted from a collection of media files, one or more playlist types corresponding to the media content are identified. The playlists with the identified playlist types are updated to reflect the addition or deletion of the media content.

US Patent:

20050234858, Oct 20, 2005

Filed:

Mar 25, 2005

Appl. No.:

11/090543

Inventors:

Yasuyuki Torii - Kyoto, JP
Nobuyasu Takeguchi - Osaka, JP
Hiroshi Kase - Osaka, JP
Kevin La Chapelle - Redmond WA, US
Ian Mercer - Sammammish WA, US
Brian Walker - Duvall WA, US

International Classification:

G06F007/00

US Classification:

707001000

Abstract:

[Object] When additional recording is performed by a recording apparatus and a program of a different method of management information construction to a recording medium having recorded thereon management information data such as a content parameter, a menu, a play list and a menu display image together with content data such as an audio, a static image and a video, consistency of the management information data is lost. [Solution] It is possible to record in a file header portion of a management information file group an editor identifier for identifying an apparatus and a program having edited that file, trace update history of the file with a file management device and update information with a management information file creation device by reflecting an intention of management information already recorded so as to keep the consistency of the management information.

US Patent:

20050238314, Oct 27, 2005

Filed:

Mar 25, 2005

Appl. No.:

11/089964

Inventors:

Sako Asayama - Nara, JP
Hiroshi Kase - Osaka, JP
Keiko Tanaka - Osaka, JP
Yasuhiro Kubo - Osaka, JP
Kevin La Chapelle - Redmond WA, US
Ian Mercer - Sammammish WA, US
Brian Walker - Duvall WA, US

International Classification:

G06F017/00

US Classification:

386001000

Abstract:

A recording apparatus reads a content management file from a file information obtaining means, and a data analysis and search means searches for a specified digital content information storing portions from the read content management file and searches for a play list file including specified digital contents in reproduction order based on reference play list information of the content information storing portions. The file information obtaining means reads a relevant play list file, and the data analysis and search means searches for an updated location and notifies a play list file creation means thereof so that the play list file creation means correctly updates the play list file.

US Patent:

20060026376, Feb 2, 2006

Filed:

Jun 28, 2005

Appl. No.:

11/168089

Inventors:

Kevin LaChapelle - Redmond WA, US
Brian Walker - Duvall WA, US
Ian Mercer - Sammamish WA, US
Keisuke Matsuo - Ikoma-city, JP
Harutoshi Miyamoto - Ibaraki-city, JP
Yasuyuki Torii - Yawata-city, JP
Nobuyasu Takeguchi - Kawachinagano-city, JP

Assignee:

Microsoft Corporation - Redmond WA
Matsushita Electric Industrial Co., Ltd. - Kadoma-shi

International Classification:

G06F 12/16
G06F 12/14

US Classification:

711170000, 711173000

Abstract:

Storing image data for a menu in a compound image file. Image data for a menu of media files is retrieved and efficiently stored in the compound image file. A media player accesses the compound image file to obtain and display relevant images in a menu. The invention reduces the quantity of file operations needed to render the menu and thus reduces the time needed to display the menu as perceived by a user. As a result, the invention enhances the user experience with the media player.