Patents by Inventor Lingtao Wang
Lingtao Wang 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).
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Patent number: 11940966Abstract: Disclosed is a method for estimating database management system performance, in which a performance change ratio of a DBMS can be determined once a first knob group, a second knob group, and a data volume of active data in data managed by the DBMS are obtained, without actually configuring the second knob group in the DBMS, executing a job by the DBMS, and then observing the execution. In other words, the performance change ratio of the DBMS can be estimated without interacting with the DBMS. DBMS security can be ensured, performance measurement approaches are provided for self-tuning and self-management of the DBMS, and reliable and stable running of the DBMS is ensured.Type: GrantFiled: August 26, 2022Date of Patent: March 26, 2024Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Guoliang Li, Tianqing Wang, Shifu Li, Lingtao Li, Kun Li
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Patent number: 11908376Abstract: A compensation system includes a processor configured to determine compensated data for display on a sub-pixel of the display device. The processor may receive image data configured to be displayed on the sub-pixel, convert the gray level data to first voltage data; fetch, from a memory, compressed 1×1 sub-pixel uniformity compensation data for the sub-pixel, and decompress the compressed 1×1 sub-pixel uniformity compensation data via a decompressor. The decompressed data comprises the 1×1 sub-pixel uniformity compensation data for the sub-pixel. The processor may also determine a voltage compensation offset value associated with the sub-pixel based on the second voltage data, generate compensated voltage data based in part on the voltage compensation offset value and the first voltage data, convert the compensated voltage data to compensated gray level data; and transmit the compensated gray level data to pixel driving circuitry associated with the sub-pixel.Type: GrantFiled: March 31, 2022Date of Patent: February 20, 2024Assignee: Apple Inc.Inventors: Lingtao Wang, Giovanni Carbone, Chaohao Wang, Enkhamgalan Dorjgotov, Sheng Zhang, Jim C Chou, Shereef Shehata, Yung-Chin Chen
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Publication number: 20240038158Abstract: An electronic device may include a display and an optical sensor formed underneath the display. The electronic device may include a plurality of transparent windows that overlap the optical sensor. The resolution of the display panel may be reduced in some areas due to the presence of the transparent windows. To prevent a visible border between the reduced resolution areas of the display and full resolution areas of the display, uniformity compensation circuitry may be used to compensate pixel data. The uniformity compensation circuitry may output compensated pixel data for the display using one or more compensation maps that include compensation factors associated with pixel locations. The uniformity compensation circuitry may also use region-specific gamma look-up tables to apply different gamma curves to pixels in different regions of the display. The uniformity compensation circuitry may also be used to form a transition region between different regions of the display.Type: ApplicationFiled: October 4, 2023Publication date: February 1, 2024Inventors: Lingtao Wang, Yingying Tang, Scott R. Johnston, Chaohao Wang, Sheng Zhang, Woo Shik Jung
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Patent number: 11823620Abstract: An electronic device may include a display and an optical sensor formed underneath the display. The electronic device may include a plurality of transparent windows that overlap the optical sensor. The resolution of the display panel may be reduced in some areas due to the presence of the transparent windows. To prevent a visible border between the reduced resolution areas of the display and full resolution areas of the display, uniformity compensation circuitry may be used to compensate pixel data. The uniformity compensation circuitry may output compensated pixel data for the display using one or more compensation maps that include compensation factors associated with pixel locations. The uniformity compensation circuitry may also use region-specific gamma look-up tables to apply different gamma curves to pixels in different regions of the display. The uniformity compensation circuitry may also be used to form a transition region between different regions of the display.Type: GrantFiled: July 6, 2021Date of Patent: November 21, 2023Assignee: Apple Inc.Inventors: Lingtao Wang, Yingying Tang, Scott R. Johnston, Chaohao Wang, Sheng Zhang, Woo Shik Jung
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Patent number: 11435821Abstract: An electronic device that includes a display and an eye tracker configured to collect eye tracking data regarding a gaze of one or more of a user's eyes across the display. The electronic device also includes processing circuitry that is operatively coupled to the display and configured to generate pixel data for frames of content based at least in part on the eye tracking data such that the content is configured to be shown on the display in a dynamically foveated manner. The processing circuitry is also configured to apply a dither pattern to the frames of content independent of the gaze of one or more of the user's eyes.Type: GrantFiled: July 14, 2020Date of Patent: September 6, 2022Assignee: Apple Inc.Inventors: Lingtao Wang, Sheng Zhang
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Publication number: 20220101790Abstract: Systems and methods may reduce or eliminate image artifacts due to a defective pixel of an electronic display. An electronic display may include pixels that respectively include a self-emissive element, pixel drive circuitry that supplies a pixel drive current to drive the self-emissive element, and signal routing circuitry that reduces or eliminates a visual artifact due to a defective pixel among the pixels. The signal routing circuitry may do this by turning off the self-emissive element, supplying image data from the pixel drive circuitry to a first adjacent pixel, or receiving image data from other pixel drive circuitry from the first adjacent pixel or a second adjacent pixel.Type: ApplicationFiled: September 10, 2021Publication date: March 31, 2022Inventors: John T. Wetherell, Cheuk Chi Lo, Chun-Yao Huang, Lingtao Wang, Derek Keith Shaeffer, Henry C. Jen, Hasan Akyol, Xuebei Yang, Chung-Lun Edwin Hsu, Patrick Bryce Bennett, Chun-Ming Tang, Yingkan Lin, Sheng Zhang, Chaohao Wang, Runjie Xu, Shingo Hatanaka
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Patent number: 11188735Abstract: In a method for determining whether a finger is a real finger at an ultrasonic fingerprint sensor, a first image of a fingerprint pattern is captured at an ultrasonic fingerprint sensor, wherein the first image is based on ultrasonic signals corresponding to a first time of flight range. A second image of the fingerprint pattern is captured at the ultrasonic fingerprint sensor, wherein the second image is based on ultrasonic signals corresponding to a second time of flight range, the second time of flight range being delayed compared to the first time of flight range. A difference in a width of ridges of the fingerprint pattern in the first image compared to the width of ridges of the fingerprint pattern in the second image is quantified. Based on the quantification of the difference, a probability whether the finger is a real finger is determined.Type: GrantFiled: June 23, 2020Date of Patent: November 30, 2021Assignee: InvenSense, Inc.Inventors: Sina Akhbari, Lingtao Wang, Mei-Lin Chan, Nikhil Apte
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Publication number: 20210096644Abstract: An electronic device that includes a display and an eye tracker configured to collect eye tracking data regarding a gaze of one or more of a user's eyes across the display. The electronic device also includes processing circuitry that is operatively coupled to the display and configured to generate pixel data for frames of content based at least in part on the eye tracking data such that the content is configured to be shown on the display in a dynamically foveated manner. The processing circuitry is also configured to apply a dither pattern to the frames of content independent of the gaze of one or more of the user's eyes.Type: ApplicationFiled: July 14, 2020Publication date: April 1, 2021Inventors: Lingtao Wang, Sheng Zhang
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Publication number: 20200401783Abstract: In a method for determining whether a finger is a real finger at an ultrasonic fingerprint sensor, a first image of a fingerprint pattern is captured at an ultrasonic fingerprint sensor, wherein the first image is based on ultrasonic signals corresponding to a first time of flight range. A second image of the fingerprint pattern is captured at the ultrasonic fingerprint sensor, wherein the second image is based on ultrasonic signals corresponding to a second time of flight range, the second time of flight range being delayed compared to the first time of flight range. A difference in a width of ridges of the fingerprint pattern in the first image compared to the width of ridges of the fingerprint pattern in the second image is quantified. Based on the quantification of the difference, a probability whether the finger is a real finger is determined.Type: ApplicationFiled: June 23, 2020Publication date: December 24, 2020Applicant: InvenSense, Inc.Inventors: Sina AKHBARI, Lingtao WANG, Mei-Lin CHAN, Nikhil APTE
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Patent number: 10580449Abstract: An optical storage system includes an optical head configured to split a light beam into a higher power main beam and at least one lower power side beam. The optical storage system also includes a controller configured to alter an optical medium, via modulation of the higher power main beam according to a writing strategy waveform that defines at least n pulses for every n bits of data to be written to the medium, while processing a first signal resulting from the at least one lower power side beam being reflected from the medium and a second signal indicative of the writing strategy waveform to remove noise from the first signal caused by the higher power main beam to generate output indicative of the data directly after writing.Type: GrantFiled: January 7, 2019Date of Patent: March 3, 2020Assignee: Oracle International CorporationInventor: Lingtao Wang
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Publication number: 20190139570Abstract: An optical storage system includes an optical head configured to split a light beam into a higher power main beam and at least one lower power side beam. The optical storage system also includes a controller configured to alter an optical medium, via modulation of the higher power main beam according to a writing strategy waveform that defines at least n pulses for every n bits of data to be written to the medium, while processing a first signal resulting from the at least one lower power side beam being reflected from the medium and a second signal indicative of the writing strategy waveform to remove noise from the first signal caused by the higher power main beam to generate output indicative of the data directly after writing.Type: ApplicationFiled: January 7, 2019Publication date: May 9, 2019Applicant: Oracle International CorporationInventor: Lingtao Wang
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Patent number: 10176837Abstract: An optical storage system includes an optical head configured to split a light beam into a higher power main beam and at least one lower power side beam. The optical storage system also includes a controller configured to alter an optical medium, via modulation of the higher power main beam according to a writing strategy waveform that defines at least n pulses for every n bits of data to be written to the medium, while processing a first signal resulting from the at least one lower power side beam being reflected from the medium and a second signal indicative of the writing strategy waveform to remove noise from the first signal caused by the higher power main beam to generate output indicative of the data directly after writing.Type: GrantFiled: November 18, 2016Date of Patent: January 8, 2019Assignee: Oracle International CorporationInventor: Lingtao Wang
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Publication number: 20180144770Abstract: An optical storage system includes an optical head configured to split a light beam into a higher power main beam and at least one lower power side beam. The optical storage system also includes a controller configured to alter an optical medium, via modulation of the higher power main beam according to a writing strategy waveform that defines at least n pulses for every n bits of data to be written to the medium, while processing a first signal resulting from the at least one lower power side beam being reflected from the medium and a second signal indicative of the writing strategy waveform to remove noise from the first signal caused by the higher power main beam to generate output indicative of the data directly after writing.Type: ApplicationFiled: November 18, 2016Publication date: May 24, 2018Inventor: Lingtao Wang
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Patent number: 9916852Abstract: In at least one embodiment, an optical data storage tape is provided. The optical data storage tape includes a read/write data area including a plurality of writeable tracks for storing data thereon, each writeable track having a first track width. The optical data storage tape further includes a seam area positioned proximate to the read/write data area. The seam area including a plurality of non-writeable tracks, each non-writeable track including a second track width that is greater than the first track width for each writeable track.Type: GrantFiled: June 15, 2016Date of Patent: March 13, 2018Assignee: Oracle International CorporationInventors: Lingtao Wang, Scott Wilson, Dwayne Edling, Faramarz Mahnad
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Patent number: 9911450Abstract: An optical storage system includes an optical head and a controller. The optical head is configured to split a light beam into a higher power main beam and a lower power side beam. The controller is configured to write data to an optical medium via the higher power main beam, and read, directly after writing, feedback from the optical medium containing the written data and noise caused by the higher power main beam. The controller is also configured to process the feedback using data indicative of the higher power main beam to remove the noise and generate output indicative of the written data, and automatically adjust a delay of the feedback or the data indicative of the higher power main beam based on a signal quality of the output.Type: GrantFiled: August 22, 2016Date of Patent: March 6, 2018Assignee: Oracle International CorporationInventors: Lingtao Wang, Forrest Lundstrom, Matthew C. Fienberg, Scott D. Wilson
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Publication number: 20180053525Abstract: An optical storage system includes an optical head and controller arrangement. The arrangement is configured to write data to an optical medium via a higher power main beam, to read, directly after writing, feedback from the medium containing the written data and noise resulting from the higher power main beam, to remove the noise from the feedback by dividing the feedback with data indicative of the higher power main beam, and to generate output indicative of the written data.Type: ApplicationFiled: August 22, 2016Publication date: February 22, 2018Inventors: Lingtao Wang, Scott D. Wilson, Forrest Lundstrom, Faramarz Mahnad, Matthew C. Fienberg
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Publication number: 20180053524Abstract: An optical storage system includes an optical head and a controller. The optical head is configured to split a light beam into a higher power main beam and a lower power side beam. The controller is configured to write data to an optical medium via the higher power main beam, and read, directly after writing, feedback from the optical medium containing the written data and noise caused by the higher power main beam. The controller is also configured to process the feedback using data indicative of the higher power main beam to remove the noise and generate output indicative of the written data, and automatically adjust a delay of the feedback or the data indicative of the higher power main beam based on a signal quality of the output.Type: ApplicationFiled: August 22, 2016Publication date: February 22, 2018Inventors: Lingtao Wang, Forrest Lundstrom, Matthew C. Fienberg, Scott D. Wilson
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Patent number: 9899055Abstract: An optical storage system includes an optical head and controller arrangement. The arrangement is configured to write data to an optical medium via a higher power main beam, to read, directly after writing, feedback from the medium containing the written data and noise resulting from the higher power main beam, to remove the noise from the feedback by dividing the feedback with data indicative of the higher power main beam, and to generate output indicative of the written data.Type: GrantFiled: August 22, 2016Date of Patent: February 20, 2018Assignee: Oracle International CorporationInventors: Lingtao Wang, Scott D. Wilson, Forrest Lundstrom, Faramarz Mahnad, Matthew C. Fienberg
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Patent number: 9875769Abstract: An optical storage system includes an optical head configured to split a light beam into a higher power main beam and a lower power side beam. The system also includes a controller. The controller is configured to modulate the higher power main beam according to writing commands to write to an optical medium while processing first data resulting from the lower power side beam being reflected from the medium and second data obtained from a look-up table that maps the writing commands to digital representations of filtered writing strategy waveforms to remove noise from the first data caused by the higher power main beam and generate output indicative of written data directly after writing.Type: GrantFiled: August 22, 2016Date of Patent: January 23, 2018Assignee: Oracle International CorporationInventors: Lingtao Wang, Matthew C. Fienberg, Forrest Lundstrom, Scott D. Wilson
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Publication number: 20170365290Abstract: In at least one embodiment, an optical data storage tape is provided. The optical data storage tape includes a read/write data area including a plurality of writeable tracks for storing data thereon, each writeable track having a first track width. The optical data storage tape further includes a seam area positioned proximate to the read/write data area. The seam area including a plurality of non-writeable tracks, each non-writeable track including a second track width that is greater than the first track width for each writeable track.Type: ApplicationFiled: June 15, 2016Publication date: December 21, 2017Inventors: Lingtao WANG, Scott WILSON, Dwayne EDLING, Faramarz MAHNAD