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Hong Kong, China

Chi Fung Lok

USPTO Granted Patents = 11

EPO Patents = 3 (Patent Applications = 5)

Average Co-Inventor Count = 1.4

ph-index = 3

Forward Citations = 41(Granted Patents)

Company Filing History:

Caelus Technologies Limited

Hong Kong Applied Science and Technology Research Institute Company, Limited

Years Active: 2015-2025

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11 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12231138 - Analog-to-digital converter (ADC) with reference ADC path receiving attenuated input to generate error codes for second and third harmonics by counting negative and positive codes (2025-02-18),

2. 11855651 - Discrete-time offset correction circuit embedded in a residue amplifier in a pipelined analog-to-digital converter (ADC) (2023-12-26),

3. 11757459 - Cascode Class-A differential reference buffer using source followers for a multi-channel interleaved Analog-to-Digital Converter (ADC) (2023-09-12),

4. 11750160 - Gain-boosted class-AB differential residue amplifier in a pipelined Analog-to-Digital Converter (ADC) using switched-capacitor common-mode feedback to eliminate tail current sources (2023-09-05),

5. 11646747 - Multi-channel interleaved analog-to-digital converter (ADC) using overlapping multi-phase clocks with SAR-searched input-clock delay adjustments and background offset and gain correction (2023-05-09),

6. 11641210 - Matrix processor generating SAR-searched input delay adjustments to calibrate timing skews in a multi-channel interleaved analog-to-digital converter (ADC) (2023-05-02),

7. 11632121 - Calibration of timing skews in a multi-channel interleaved analog- to-digital converter (ADC) by auto-correlation of muxed-together channels in binary output tree (2023-04-18),

8. 11146282 - Calibration of residual errors using least-mean-squares (LMS) and stochastic-gradient methods for an analog-to-digital converter (ADC) with a pre-calibrated lookup table (2021-10-12),

9. 10483995 - Calibration of radix errors using Least-Significant-Bit (LSB) averaging in a Successive-Approximation Register Analog-Digital Converter (SAR-ADC) during a fully self-calibrating routine (2019-11-19),

10. 9219492 - Loading-free multi-stage SAR-assisted pipeline ADC that eliminates amplifier load by re-using second-stage switched capacitors as amplifier feedback capacitor (2015-12-22),

11. 9086706 - Low supply voltage bandgap reference circuit and method (2015-07-21),

Title: Innovations of Chi Fung Lok

Introduction

Chi Fung Lok is a prominent inventor based in Hong Kong, CN. He has made significant contributions to the field of analog-to-digital conversion technology. With a total of 11 patents to his name, his work has advanced the capabilities of electronic devices in processing analog signals.

Latest Patents

Chi Fung Lok's latest patents include an innovative Analog-to-Digital Converter (ADC) that utilizes a reference ADC path to receive attenuated input. This design generates error codes for second and third harmonics by counting negative and positive codes. The interleaved ADC features a reference channel that is calibrated to eliminate capacitor-ratio mismatch and other discrepancies, producing a linear replica of the data channels with minimal nonlinear errors. Additionally, he has developed a discrete-time offset correction circuit embedded in a residue amplifier within a multi-stage pipelined ADC. This circuit effectively corrects offsets during the amplification phase, enhancing the accuracy of the conversion process.

Career Highlights

Throughout his career, Chi Fung Lok has worked with notable companies such as Caelus Technologies Limited and the Hong Kong Applied Science and Technology Research Institute Company, Limited. His expertise in analog-to-digital conversion has positioned him as a key figure in the development of advanced electronic systems.

Collaborations

Chi Fung Lok has collaborated with talented individuals in his field, including Xiaoyong He and Zhi Jun Li. Their combined efforts have contributed to the success of various projects and innovations.

Conclusion

Chi Fung Lok's contributions to the field of analog-to-digital conversion technology are noteworthy. His innovative patents and collaborations have significantly impacted the industry, showcasing his expertise and dedication to advancing electronic technology.

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