Heejong Yoo from 10961 La Alberca Ave, San Diego, CA 92127, age 53

Resumes

Patent Counsel

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Location:

10961 La Alberca Ave, San Diego, CA 92127

Industry:

Wireless

Work:

Qualcomm
Patent Counsel
Qualcomm
Patent Counsel, Associate
Qualcomm Sep 2010 - Jun 2014
Patent Agent, Patent Department
Qualcomm Jan 2009 - Sep 2010
Staff Engineer, Strategic Ip Department
Qualcomm Jan 2005 - Jan 2009
Staff Engineer, Qct

Education:

University of San Diego 2010 - 2013
Doctor of Jurisprudence, Doctorates, Law Georgia Institute of Technology 2000 - 2005
Doctorates, Doctor of Philosophy, Computer Engineering Korea University 1993 - 1994
Master of Science, Masters Korea University 1989 - 1992
Bachelors, Bachelor of Science

Skills:

Patents
Patent Prosecution
Intellectual Property
Licensing
Semiconductors
Ip
Patent Litigation
Patentability
Audio Processing
Invention
Trademarks
Copyright Law
Audio Codecs

Patent Counsel, Associate

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Location:

San Diego, CA

Work:

Qualcomm
Patent Counsel, Associate

Us Patents

Systems And Methods For Double-Talk Detection In Acoustically Harsh Environments
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US Patent:

8498407, Jul 30, 2013
Filed:

Dec 2, 2008
Appl. No.:

12/326868
Inventors:

Asif Iqbal Mohammad - San Diego CA, US
Eddie L. T. Choy - Carlsbad CA, US
Heejong Yoo - San Diego CA, US
Assignee:

QUALCOMM Incorporated - San Diego CA
International Classification:

H04M 9/08
US Classification:

37940608, 37940612
Abstract:

A communications device that is configured to detect double talk is described. An echo canceller is configured to cancel an echo from an input signal using an adaptive filter. A double-talk detector provides a double-talk statistic. The double-talk statistic is proportional to the ratio of the remaining echo energy in the cancellation error signal and the total cancellation error energy.

System And Method For Echo Cancellation
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US Patent:

8600038, Dec 3, 2013
Filed:

Sep 4, 2008
Appl. No.:

12/204608
Inventors:

Asif Iqbal Mohammad - San Diego CA, US
Steven L. Grant - Rolla MO, US
Heejong Yoo - San Diego CA, US
Deepak Kumar Challa - San Diego CA, US
Assignee:

QUALCOMM Incorporated - San Diego CA
International Classification:

H04M 9/08
A61F 2/20
H04B 3/20
H04B 1/38
US Classification:

37940609, 381 7112, 370290, 455570
Abstract:

An echo canceller for improved recognition and removal of an echo from a communication device. The echo canceller can dynamically reduce echo using an improved energy estimator and an improved adaptive filter. The improved energy estimator can determine if conversation is in a single talk period or a double talk period based on the combined energy of both the near end background noise and speech. The improved adaptive filter can reduce echo by dynamically changing adaptation speed or step size. In double talk, the adaptive filter(s) can dynamically slow-down or stop adaptation. In single talk, the filter can dynamically increase the speed of adaptation to improve accuracy, or decrease adaptation speed for stability.

Analog Audio Signal Enhancement System Using A Noise Suppression Algorithm
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US Patent:

20040013276, Jan 22, 2004
Filed:

Mar 21, 2003
Appl. No.:

10/394783
Inventors:

Richard Ellis - Phoenix AZ, US
Heejong Yoo - Atlanta GA, US
David Graham - Marlton NJ, US
Paul Hasler - Atlanta GA, US
David Anderson - Alpharetta GA, US
International Classification:

H04B015/00
US Classification:

381/094300, 381/094100
Abstract:

One preferred embodiment of the present invention provides systems and methods for removing noise from an input analog signal in continues time. Briefly described in architecture, one embodiment of the system, among others, can be implemented as follows. An analog filtering system including VLSI circuitry separates an analog input signal into a plurality of sub-band signals. Then, an analog gain system including VLSI circuitry calculates a gain for each sub-band signal that suppresses the noise within the sub-band signal. In some preferred embodiments, VLSI circuitry includes floating gate technology. Methods and other systems are also provided.

Distributed Arithmetic Adaptive Filter And Method
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US Patent:

20050201457, Sep 15, 2005
Filed:

Mar 10, 2005
Appl. No.:

11/076741
Inventors:

Daniel Allred - Douglasville GA, US
David Anderson - Alpharetta GA, US
Walter Huang - Greer SC, US
Venkatesh Krishnan - Atlanta GA, US
Heejong Yoo - San Diego CA, US
International Classification:

H03K005/159
US Classification:

375232000
Abstract:

Systems and methods for very high throughput adaptive filtering using distributed arithmetic are disclosed. One distributed arithmetic adaptive filter may include a memory for storing a first and second lookup table. The first lookup table may include 2filter weights addressed by the rightmost bits of each of K signal samples stored in a plurality of registers. The filter may include a controller configured to update the second lookup table with each possible combination of the sums of the K most recent input samples and update each of the 2filter weights of the first lookup table based on the combination of the sums of the K most recent input samples stored in the second lookup table. The second lookup-table may be updated during a filtering operation that uses the first lookup-table. One filter may include a plurality of sub-filters with each sub-filter having first and second lookup tables.

Power Efficient Batch-Frame Audio Decoding Apparatus, System And Method
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US Patent:

20090070119, Mar 12, 2009
Filed:

Sep 4, 2008
Appl. No.:

12/204593
Inventors:

Heejong Yoo - San Diego CA, US
Nidish R. Kamath - San Diego CA, US
Eddie L.T. Choy - Carlsbad CA, US
Johnny Kallacheril John - San Diego CA, US
Samir K. Gupta - San Diego CA, US
Assignee:

QUALCOMM Incorporated - San Diego CA
International Classification:

G10L 19/00
US Classification:

704500, 704E19001
Abstract:

Power savings in a mobile device is accomplished by generating audio samples by decoding a bitstream with a decoding system within the mobile device. The generated audio samples are transferred into at least one memory bank in a set of memory banks in a power saver block within the mobile device. Parts of the decoding system not involved in the storing of the generated audio samples are switched off after batch decoding a bitstream associated with multiple audio frames. The bitstream includes bits less than that found in one audio file. At least one of the memory banks in the set of memory banks is power collapsible. The fetching of the decoded by the decoding system can be synchronized with a paging channel of a modem in the mobile device. The transferred audio samples is a lossless compression and may occur after a re-encoding.

Method, System, And Apparatus For Compression Or Decompression Of Digital Signals
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US Patent:

20100017196, Jan 21, 2010
Filed:

Jul 16, 2009
Appl. No.:

12/504592
Inventors:

Sang-Uk Ryu - San Diego CA, US
Samir K. Gupta - San Diego CA, US
Philip Rutschman - Seattle WA, US
Heejong Yoo - San Diego CA, US
Assignee:

QUALCOMM Incorporated - San Diego CA
International Classification:

G10L 19/00
US Classification:

704201, 704E19004
Abstract:

Embodiments of methods, apparatuses, devices and systems associated with compression and decompression of digital signals are disclosed.

System And Method Of Smart Audio Logging For Mobile Devices
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US Patent:

20120078397, Mar 29, 2012
Filed:

Mar 30, 2011
Appl. No.:

13/076242
Inventors:

Khaled Helmi EL-MALEH - San Marcos CA, US
Heejong YOO - San Diego CA, US
Jongwon SHIN - San Diego CA, US
Assignee:

QUALCOMM Incorporated - San Diego CA
International Classification:

G06F 17/00
US Classification:

700 94
Abstract:

A mobile device that is capable of automatically starting and ending the recording of an audio signal captured by at least one microphone is presented. The mobile device is capable of adjusting a number of parameters related with audio logging based on the context information of the audio input signal.

System And Method Of Determining Auditory Context Information
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US Patent:

20210264947, Aug 26, 2021
Filed:

May 11, 2021
Appl. No.:

17/317702
Inventors:

- San Diego CA, US
Khaled Helmi EL-MALEH - San Marcos CA, US
Heejong YOO - San Diego CA, US
Jongwon SHIN - Gwangju, KR
International Classification:

G11B 20/10
G10L 25/78
G10L 17/00
H04M 1/72433
Abstract:

A device includes a memory configured to store a captured audio input signal and one or more processors configured to process the captured audio input signal to determine auditory context information within the captured audio input signal. The one or more processors are configured to determine an audio quality enhancement level to be applied to the captured audio input signal based on the determined auditory context information, and perform audio quality enhancement on the captured audio input signal based on the determined audio quality enhancement level, wherein the audio quality enhancement level is dynamically adjusted during the storing of the captured audio input signal according to the determined auditory context information.