Brian David Link

US Patent:

8259806, Sep 4, 2012

Filed:

Nov 29, 2007

Appl. No.:

12/312840

Inventors:

Regunathan Radhakrishnan - Pacifica CA, US
Claus Bauer - San Francisco CA, US
Kent Bennett Terry - Millbrae CA, US
Brian David Link - Oakland CA, US
Hyung-Suk Kim - Glendale CA, US
Eric Gsell - Valencia CA, US

Assignee:

Dolby Laboratories Licensing Corporation - San Francisco CA

International Classification:

H04N 11/02

US Classification:

37524015, 37524025

Abstract:

Signatures that can be used to identify video and audio content are generated from the content by generating measures of dissimilarity between features of corresponding groups of pixels in frames of video content and by generating low-resolution time-frequency representations of audio segments. The signatures are generated by applying a hash function to intermediate values derived from the measures of dissimilarity and to the low-resolution time-frequency representations. The generated signatures may be used in a variety of applications such as restoring synchronization between video and audio content streams and identifying copies of original video and audio content. The generated signatures can provide reliable identifications despite intentional and unintentional modifications to the content.

US Patent:

8626504, Jan 7, 2014

Filed:

Aug 30, 2012

Appl. No.:

13/599992

Inventors:

Regunathan Radhakrishnan - San Bruno CA, US
Claus Bauer - Beijing, CN
Kent Bennett Terry - Millbrae CA, US
Brian David Link - San Jose CA, US
Hyung-Suk Kim - Valencia CA, US
Eric Gsell - Valencia CA, US

Assignee:

Dolby Laboratories Licensing Corporation - San Francisco CA

International Classification:

G10L 21/00
H04N 11/02

US Classification:

704230, 37524015, 37524025, 704219

Abstract:

Signatures that can be used to identify video and audio content are generated from the content by generating measures of dissimilarity between features of corresponding groups of pixels in frames of video content and by generating low-resolution time-frequency representations of audio segments. The signatures are generated by applying a hash function to intermediate values derived from the measures of dissimilarity and to the low-resolution time-frequency representations. The generated signatures may be used in a variety of applications such as restoring synchronization between video and audio content streams and identifying copies of original video and audio content. The generated signatures can provide reliable identifications despite intentional and unintentional modifications to the content.

US Patent:

20120063614, Mar 15, 2012

Filed:

Nov 18, 2011

Appl. No.:

13/300480

Inventors:

Brett G. Crockett - Brisbane CA, US
Alan J. Seefeldt - San Francisco CA, US
Brian D. Link - San Jose CA, US
John D. Couling - San Mateo CA, US

International Classification:

H03G 5/00

US Classification:

381 98

Abstract:

Apparatuses for and methods of carrying out dynamic equalization processing of an audio signal, and apparatuses for and methods of controlling such equalization processing of the audio signal to dynamically adjust the time-varying spectrum of an audio signal to more closely match a user specified target time-invariant perceived audio signal spectrum while preserving the original dynamic range of the audio signal. The dynamic equalization is according to a user-defined spectral profile specified by a control interface that allows a user to define, create, modify and/or apply the user-defined spectral profile.

US Patent:

20130066673, Mar 14, 2013

Filed:

Sep 8, 2008

Appl. No.:

12/283136

Inventors:

R. Kevin Rose - San Francisco CA, US
Anton P. Kast - San Francisco CA, US
Brian W. Link - Delaware OH, US

International Classification:

G06Q 30/00
G06F 17/30

US Classification:

705 728, 707E17055, 705318, 707784, 707785

Abstract:

Promoting a candidate content item included in a plurality of content items is disclosed. A plurality of user reputation scores is received. For the candidate content item in the plurality of candidate content items, a content reputation score is determined based at least in part on a portion of the received user reputation scores. A determination of whether to promote the candidate content item is made based at least in part on the content reputation score and a dynamically adjusted threshold. The candidate content item is promoted if it is determined that the candidate content item should be promoted.

US Patent:

56320035, May 20, 1997

Filed:

Nov 1, 1993

Appl. No.:

8/145975

Inventors:

Grant A. Davidson - Oakland CA
Craig C. Todd - Mill Valley CA
Mark F. Davis - Pacifica CA
Brian D. Link - Oakland CA
Louis D. Fielder - Millbrae CA

Assignee:

Dolby Laboratories Licensing Corporation - San Francisco CA

International Classification:

G10L 900

US Classification:

395 238

Abstract:

The invention relates in general to low bit-rate encoding and decoding of information such as audio information. More particularly, the invention relates to computationally efficient adaptive bit allocation and quantization of encoded information useful in high-quality low bit-rate coding systems. In one embodiment, an audio split-band encoder splits an input signal into frequency subband signals, quantizes the subband signals according to values established by an allocation function, and assembles the quantized subband signals into an encoded signal. The allocation function establishes allocation values in accordance with psychoacoustic principles based upon a masking threshold. The masking threshold is established by estimating the power spectral density (PSD) of the input signal, generating an excitation pattern by applying a spreading function to the PSD, adjusting the excitation pattern by an amount equal to a signal-to-noise ratio (SNR) offset sufficient to achieve psychoacoustic masking, comparing the level of the adjusted pattern to the threshold of hearing and generating a masking threshold which is equal to the larger of the two. The spreading function may be implemented by applying one or more IIR filters to the input signal PSD.