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Jeho Lee

from San Diego, CA
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Also known as:
Jae Ho Lee, Jeho H Lee, Je Ho Lee
Phone and address:
5802 Aster Meadows Pl, San Diego, CA 92130
(858) 523-0670
Related to:
Hyunja J LeeKim Sangho, 57Haisok Lee Ann, 64Ryong Lee Jang, 60Je Ho, 57Jaewoo Lee, 44Sang Yuplee, 54Mijin Lee, 56Tae Hee Lee, 60Janice Rhee, 53Amy Lee, 28Kyoungah Lee, 57Soo J Lee, 59Chok W Ho, 64
Connected to:
A Lee, 45Abi A Lee, 31Abigail LeeAbu B Lee, 66Adela C Lee, 64Adelyn S Lee, 39Adrian J Lee, 36Adriane C Lee, 57Aen H Lee, 44Aeren Lee, 33

Jeho Lee Phones & Addresses

  • 5802 Aster Meadows Pl, San Diego, CA 92130 (858) 523-0670
  • 11524 Trailbrook Ln, San Diego, CA 92128 (858) 513-1941 (858) 513-3799
  • Palo Alto, CA
  • San Jose, CA
  • Cupertino, CA
  • Vancouver, WA
  • West Lafayette, IN
  • 813 Altaire Walk, Palo Alto, CA 94303

Education

Degree: Associate degree or higher

Industries

Information Technology and Services

Resumes

Resumes

Jeho Lee Photo 1

Imaging System Architect

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Location:
Greater San Diego Area
Industry:
Information Technology and Services

Publications

Us Patents

Methods And Apparatus For Hybrid Halftoning Of An Image

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US Patent:
20130069968, Mar 21, 2013
Filed:
Mar 16, 2012
Appl. No.:
13/422819
Inventors:
Jeho Lee - Palo Alto CA, US
Manu Parmar - Sunnyvale CA, US
Jennifer Lee Gille - Menlo Park CA, US
Assignee:
QUALCOMM MEMS Technologies, Inc. - San Diego CA
International Classification:
G09G 5/02
US Classification:
345582, 345596
Abstract:
This disclosure provides methods, apparatus, and computer programs encoded on computer storage media for tone based halftoning of digital images. By exploiting knowledge of local image features and tone levels, the halftoning method may be adaptively switched between error-diffusion and mask-based dithering with reduced boundary artifacts. By further utilizing a smart quantization error clipping scheme, artifacts inherent to the method of error diffusion are also reduced. The method consistently generates higher quality halftone images for both still and video applications when compared to conventional methods.

Hybrid Video Halftoning Techniques

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US Patent:
20130069974, Mar 21, 2013
Filed:
May 24, 2012
Appl. No.:
13/480314
Inventors:
Jeho Lee - Palo Alto CA, US
Manu Parmar - Sunnyvale CA, US
Jennifer Lee Gille - Menlo Park CA, US
Assignee:
QUALCOMM MEMS TECHNOLOGIES, INC. - San Diego CA
International Classification:
G09G 5/02
US Classification:
345596
Abstract:
This disclosure provides techniques related to halftoning video images for display on an electronic device. The techniques include adaptively selecting, on a pixel-by-pixel basis, between a mask-based dithering (MBD) and an error diffusion (ED) halftoning technique. The ED technique may be selected for halftoning pixels of an input frame of data having either a temporal change rate metric (CRM) or a spatial CRM exceeding a respective threshold. Where both the temporal CRM and spatial CRM are less than the respective thresholds, halftoning may be performed by the technique that produces a halftone value closer to a comparison halftone value of a comparison frame. The comparison frame may be a preceding frame, or an immediately preceding frame.

Method And Device For Reducing Effect Of Polarity Inversion In Driving Display

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US Patent:
20130100100, Apr 25, 2013
Filed:
Oct 21, 2011
Appl. No.:
13/279143
Inventors:
Manu Parmar - Sunnyvale CA, US
Jeho Lee - Palo Alto CA, US
Nao S. Chuei - San Mateo CA, US
Koorosh Aflatooni - Cupertino CA, US
Assignee:
QUALCOMM MEMS Technologies, Inc. - San Diego CA
International Classification:
G06F 3/038
US Classification:
345209
Abstract:
This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for reducing artifacts in an image generated by a display device. In one aspect, data is written to a display and a position of display elements is maintained based on the application of a bias voltage pattern. The bias voltage pattern includes alternating polarities along one dimension in a pattern having a first frequency spectrum, and alternating polarities along a second dimension in a pattern having a second frequency spectrum that is different than the first frequency spectrum. At least one of the first and second frequency spectrums may include a plurality of frequency components.

Method And Apparatus For Model Based Error Diffusion To Reduce Image Artifacts On An Electric Display

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US Patent:
20130100107, Apr 25, 2013
Filed:
Feb 28, 2012
Appl. No.:
13/407568
Inventors:
Jeho Lee - Palo Alto CA, US
Manu Parmar - Sunnyvale CA, US
Nao S. Chuei - San Mateo CA, US
Koorosh Aflatooni - Cupertino CA, US
Assignee:
QUALCOMM MEMS Technologies, Inc. - San Diego CA
International Classification:
G09G 5/00
US Classification:
345212, 345204
Abstract:
This disclosure provides methods and apparatus, including computer programs encoded on computer storage media, for reducing visual aberrations on an electronic display. One aspect is a method of writing an input image data value to a display element in a electronic display. The method includes receiving an input image data value, and quantizing the image data value based on a threshold. The threshold may be modulated based on a voltage drive signal provided to the display element in the electronic display. The method may also write the quantized image data value to the display element.

Method And Device For Reducing Effect Of Polarity Inversion In Driving Display

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US Patent:
20130100109, Apr 25, 2013
Filed:
Jun 22, 2012
Appl. No.:
13/531137
Inventors:
Jeho Lee - Palo Alto CA, US
Manu Parmar - Sunnyvale CA, US
Koorosh Aflatooni - Cupertino CA, US
Hemang J. Shah - San Diego CA, US
Mark M. Todorovich - San Diego CA, US
Assignee:
QUALCOMM MEMS Technologies, Inc. - San Diego CA
International Classification:
G09G 5/00
US Classification:
345212
Abstract:
This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for reducing artifacts in an image generated by a display device. In one aspect, data is written to a display and a position of display elements is maintained based on the application of a hold voltage pattern. The hold voltage pattern includes alternating polarities along one dimension in a pattern, and alternating polarities along a second dimension in a pattern. The polarities of the first and second patterns may be switched in a manner that maintains a substantially constant magnitude voltage across each display element.

Systems, Devices, And Methods For Driving A Display

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US Patent:
20130127881, May 23, 2013
Filed:
Nov 8, 2012
Appl. No.:
13/672489
Inventors:
Mark Todorovich - San Diego CA, US
SuryaPrakash Ganti - Los Altos CA, US
Koorosh Aflatooni - Cupertino CA, US
Wilhelmus Johannes Robertus Van Lier - San Diego CA, US
Kostadin Djordjev - San Jose CA, US
Manu Parmar - Sunnyvale CA, US
Jeho Lee - Palo Alto CA, US
Assignee:
QUALCOMM MEMS Technologies, Inc. - San Diego CA
International Classification:
G09G 5/02
G09G 3/00
G06T 1/00
US Classification:
345501, 345690, 345 31
Abstract:
This disclosure provides systems, methods and apparatus for writing data to a display. The frame rate is improved by simultaneously and independently writing data to multiple common lines of the display. In some implementations, lines of common color are written simultaneously. In some implementations, more common lines of lower visual importance are written simultaneously than common lines of higher visual importance. In these implementations, colors of higher visual importance can be displayed at a higher resolution to maintain good image quality while still improving frame rate. Display element electrodes may be coupled along common lines in various ways to implement simultaneous writing to multiple common lines.

Systems, Devices, And Methods For Driving A Display

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US Patent:
20130127926, May 23, 2013
Filed:
Nov 8, 2012
Appl. No.:
13/672518
Inventors:
Mark Todorovich - San Diego CA, US
SuryaPrakash Ganti - Los Altos CA, US
Koorosh Aflatooni - Cupertino CA, US
Wilhelmus Johannes Robertus Van Lier - San Diego CA, US
Kostadin Djordjev - San Jose CA, US
Manu Parmar - Sunnyvale CA, US
Jeho Lee - Palo Alto CA, US
Assignee:
QUALCOMM MENS Technologies, Inc. - San Diego CA
International Classification:
G09G 5/02
US Classification:
345690
Abstract:
This disclosure provides systems, methods and apparatus for writing data to a display. The frame rate is improved by simultaneously and independently writing data to multiple common lines of the display. In some implementations, lines of common color are written simultaneously. In some implementations, more common lines of lower visual importance are written simultaneously than common lines of higher visual importance. In these implementations, colors of higher visual importance can be displayed at a higher resolution to maintain good image quality while still improving frame rate. Display element electrodes may be coupled along common lines in various ways to implement simultaneous writing to multiple common lines.

Color Mapping Interpolation Based On Lighting Conditions

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US Patent:
20130222408, Aug 29, 2013
Filed:
Jul 6, 2012
Appl. No.:
13/543633
Inventors:
Jeho Lee - Palo Alto CA, US
Manu Parmar - Sunnyvale CA, US
Assignee:
QUALCOMM MEMS TECHNOLOGIES, INC. - San Diego CA
International Classification:
G09G 5/02
US Classification:
345589
Abstract:
This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for performing color mapping in a display device. The display device can include a plurality of stored color mappings that are used to convert input digital color images into the display device's color space. Each of the stored color mappings can correspond to a distinct lighting environment. The display device can detect its lighting environment and then combine two or more of the stored color mappings based on the detected lighting environment. For example, the display device may calculate an interpolated color mapping from two or more of the stored color mappings using interpolation weights that are based on the detected lighting conditions. The display device can then convert the input image using the composite color mapping, and display the image.
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Jeho Lee from San Diego, CA Get Report