Mark J Hsu

6412024, Jun 25, 2002

Sep 27, 2000

09/672168

Mark Hsu - Fremont CA
Yann Le Cornec - Fremont CA
Julien T. Nguyen - Redwood City CA

Sigma Designs, Inc. - Milpitas CA

G06F 1540

710 5

An improved audio-output device coupleable to a computer system, in which a DSP operating under software control emulates a common command interface. The command interface has a set of registers that are made available to the CPU for reading and writing, even if there are no such physical registers available in the device. The DSP also performs tasks in addition to audio-output, even though the audio-output device is required to respond immediately to commands from the CPU. The audio-output device has a DSP for interpreting and executing commands received from the CPU, a local memory for storing data input to or output from the DSP, a bus-interface (BIF) element for coupling the DSP and memory to a system bus, and a direct memory access (DMA) element for transferring data between the local memory and the system bus. The local memory has an emulation region for emulating a set of named registers the CPU may read from and write into according to the command interface, and a communication region for transmitting messages between the CPU and the DSP. The emulation region is indicated by a base register and a set of offset values, and has a dynamically allocated set of registers for emulating the set of named registers the CPU may read from and write into.

6995794, Feb 7, 2006

May 18, 2001

09/861279

Mark Hsu - Fremont CA, US
Mitchell Norcross - Harvard MA, US
Georges Auberger - Emerald Hills CA, US
Remy Zimmermann - Belmont CA, US
Sergio Maggi - San Mateo CA, US
George Sanchez - Fremont CA, US
Bryed Billerbeck - Mountain View CA, US
Wei Li - Cupertino CA, US
Jean-Michel Junien Labrousse - Belmont CA, US

Logitech Europe S.A. - Romanel-sur-Morges

H04N 5/217
H04N 9/64

348241, 348243

A low cost camera by implementing the major functions in host software is provided. This is accomplished by sending raw, digitized data from the camera directly to the host. The increased volume of raw data is handled by either an improved compression/decompression scheme using lossless compression, using lossy compression or using a shared bus with higher bandwidth. By moving such functions as color processing and scaling to the host, the pixel correction can also be moved to the host. This in turn allows the elimination of the frame buffer memory from the camera. Finally, the camera can use a low cost lens by implementing vignetting, distortion, gamma or aliasing correction with a correction value stored in a register of the camera for later access by the host to perform corrections.

20050162531, Jul 28, 2005

Mar 25, 2005

11/090762

Mark Hsu - Fremont CA, US
Mitchell Norcross - Harvard MA, US
Georges Auberger - Emerald Hills CA, US
Remy Zimmermann - Belmont CA, US
Sergio Maggi - San Mateo CA, US
George Sanchez - Fremont CA, US
Bryed Billerbeck - Mountain View CA, US
Wei Li - Cupertino CA, US
Jean-Michel Labrousse - Belmont CA, US

Logitech Europe S.A. - Romanel-sur-Morges

H04N005/225
H04N005/228
G03B017/00

348222100, 348207100

A low cost camera by implementing the major functions in host software is provided. This is accomplished by sending raw, digitized data from the camera directly to the host. The increased volume of raw data is handled by either an improved compression/decompression scheme using lossless compression, using lossy compression or using a shared bus with higher bandwidth. By moving such functions as color processing and scaling to the host, the pixel correction can also be moved to the host. This in turn allows the elimination of the frame buffer memory from the camera. Finally, the camera can use a low cost lens by implementing vignetting, distortion, gamma or aliasing correction with a correction value stored in a register of the camera for later access by the host to perform corrections.

61758809, Jan 16, 2001

Aug 17, 1998

9/135151

Mark Hsu - Fremont CA
Yann Le Cornec - Fremont CA
Julien T. Nguyen - Redwood City CA

Sigma Designs, Inc.

G06F 1502

710 5

An improved audio-output device coupleable to a computer system, in which a DSP operating under software control emulates a common command interface. The command interface has a set of registers that are made available to the CPU for reading and writing, even if there are no such physical registers available in the device. The DSP also performs tasks in addition to audio-output, even though the audio-output device is required to respond immediately to commands from the CPU. The audio-output device has a DSP for interpreting and executing commands received from the CPU, a local memory for storing data input to or output from the DSP, a bus-interface (BIF) element for coupling the DSP and memory to a system bus, and a direct memory access (DMA) element for transferring data between the local memory and the system bus. The local memory has an emulation region for emulating a set of named registers the CPU may read from and write into according to the command interface, and a communication region for transmitting messages between the CPU and the DSP. The emulation region is indicated by a base register and a set of offset values, and has a dynamically allocated set of registers for emulating the set of named registers the CPU may read from and write into.

20180292261, Oct 11, 2018

Jun 15, 2018

16/009545

- Kapolei HI, US
Mark Hsu - Richmond CA, US
Denis Ivanov - Pleasant Hill CA, US

G01J 3/28
G01J 3/26

A system for determining a spectrum includes an interface and a processor. The interface is configured to receive a sample set of intensity data for an array of spatial locations and a set of spectral configurations. The processor is configured to determine a region of interest using the sample set of intensity data and determine a spectral peak for the region of interest.

20180128682, May 10, 2018

Oct 25, 2017

15/793800

- Kapolei HI, US
Timothy Learmonth - Berkeley CA, US
Mark Hsu - Richmond CA, US
Hod Finkelstein - Berkeley CA, US

G01J 3/45
G01J 3/02

A system for determining a calibrated spectral measurement includes a tunable Fabry-Perot etalon, a detector, and a processor. The tunable Fabry-Perot etalon has a settable gap. The detector measures light intensity. The processor is configured to determine the calibrated spectral measurement. The calibrated spectral measurement is based at least in part on a measurement set of detected light intensities for a plurality of settable gaps and a reconstruction matrix. The reconstruction matrix is based at least in part on calibration measurements. For a calibration measurement, a settable gap is selected and a set of input monochromatic source wavelengths is used to measure responses at a detector after transmission through the Fabry-Perot etalon. Each input monochromatic source wavelength is also measured using a radiometer to scale detector measurements.

20180080825, Mar 22, 2018

Sep 19, 2017

15/709370

- Kapolei HI, US
Ron R. Nissim - El Cerrito CA, US
Hod Finkelstein - Berkeley CA, US
Mark Hsu - Richmond CA, US

G01J 3/26
G01J 3/02

A system for determining a calibrated spectral measurement includes a tunable Fabry-Perot etalon, a detector, and a processor. The tunable Fabry-Perot etalon has a settable gap. The detector measures light intensity transmitted through the tunable Fabry-Perot etalon. The processor is configured to determine the calibrated spectral measurement. The calibrated spectral measurement is based at least in part on a measurement set of detected light intensities for a plurality of settable gaps and a reconstruction matrix. The reconstruction matrix is based at least in part on calibration measurements using multiple source wavelengths and multiple settable gaps.

20180084231, Mar 22, 2018

Sep 19, 2017

15/709365

- Kapolei HI, US
Ron R. Nissim - El Cerrito CA, US
Hod Finkelstein - Berkeley CA, US
Mark Hsu - Richmond CA, US

H04N 9/083
G06T 7/80
H04N 5/225
G06T 7/00

A system for machine vision spectral imaging includes a spectral imager, a substrate, and a processor. The spectral imager comprises a Fabry-Perot etalon including a settable gap. The substrate has relative motion with respect to the spectral imager. The processor is configured to identify an object in a set of images from the spectral imager, wherein each of the set of images is associated with a specific gap of a full set of gaps, wherein the full set of gaps comprises a set of gaps setting the settable gap covering a complete range of the settable gap needed for a full spectral image of the object.