Zheng Cao

US Patent:

8261257, Sep 4, 2012

Filed:

Oct 24, 2011

Appl. No.:

13/280017

Inventors:

Frank Huang - Pleasanton CA, US
Xiaohua Luo - San Jose CA, US
Robert Lee - Fremont CA, US
James Jan - San Jose CA, US
Zheng Cao - Union City CA, US

Assignee:

Marvell International Ltd. - Hamilton

International Classification:

G06F 9/44
G06F 9/45
G06F 9/445
G06F 3/00
G06F 9/46
G06F 13/00
G06F 12/00

US Classification:

717173, 717160, 717168, 717174, 717178, 719319, 719321, 711137, 711139, 711153, 711165

Abstract:

A host system includes an operating system having a user space and a kernel space with a memory. A device driver performs download cycles to download a firmware file from the user space to the memory. The download cycles are performed based on blocks of data remaining in the user space and not downloaded from the user space. The device driver: transfers a first block of data to a first segment of the memory; transfers a second block of data from the user space to a second segment of the memory; copies the first block into the second segment; and appends the first block to the second block to form a combined block. The first block is transferred from the user space to the first segment during a first download cycle. The first block is transferred from a second segment to the first segment during a second download cycle.

US Patent:

8528007, Sep 3, 2013

Filed:

Aug 31, 2012

Appl. No.:

13/601368

Inventors:

Frank Huang - Pleasanton CA, US
Xiaohua Luo - San Jose CA, US
Robert Lee - Fremont CA, US
James Jan - San Jose CA, US
Zheng Cao - Union City CA, US

Assignee:

Marvell International Ltd. - Hamilton

International Classification:

G06F 3/00
G06F 9/44
G06F 9/46
G06F 13/00
G06F 9/445

US Classification:

719327, 719312, 717168, 717174

Abstract:

A host includes an operating system segmented into a user space and a kernel space with a driver. The user space stores a firmware file and the kernel space includes memory. The driver is stored in the kernel space and performs download cycles to download the firmware file to the memory. The device driver, during a first download cycle, transfers a first block of data to the memory. During each download cycle performed subsequent to the first download cycle, the driver is configured to: identify first and second segments of the memory, where data including the first block of data was stored in the first segment during a previous download cycle; copy the data including the first block of data from the first segment to the second segment; and transfer a block of data of the firmware file, not previously stored in the memory, to the second segment.

US Patent:

8046776, Oct 25, 2011

Filed:

Nov 14, 2007

Appl. No.:

11/939891

Inventors:

Frank Huang - Pleasanton CA, US
Xiaohua Luo - San Jose CA, US
Robert Lee - Fremont CA, US
James Jan - San Jose CA, US
Zheng Cao - Union City CA, US

Assignee:

Marvell International Ltd. - Hamilton

International Classification:

G06F 3/00
G06F 9/44
G06F 9/46
G06F 13/00
G06F 9/45
G06F 9/445

US Classification:

719321, 719319, 717168, 717174

Abstract:

A method and system for transferring a firmware file between a host system and a device driver, wherein the host system includes an operating system segmented into a user space and a kernel space is disclosed. Aspects of the exemplary embodiment include using a first type of process file system command in the user space to initiate a transfer of the firmware file between the host system and the device driver, wherein the firmware file exists in the user space and the device driver exists in the kernel space; and using a second type of process file system command in the user space to transfer the firmware file between the user space and the device driver in kernel space.

US Patent:

20210142706, May 13, 2021

Filed:

Sep 30, 2016

Appl. No.:

16/074183

Inventors:

- Houston TX, US
Zheng CAO - LaPuente CA, US
Kevin L MASSARO - Houston TX, US
Maria Natalia RUSSI-VIGOYA - Houston TX, US
Christine HARPER - Houston TX, US

Assignee:

HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. - Houston TX

International Classification:

G09G 3/00
G06F 1/16

Abstract:

An example mobile system is disclosed. The system comprises a transparent display screen, and a scanner head to scan an area seen through the transparent display. Position of the scanner is adjustable with respect to the transparent display. The scanner comprises at least one camera and at least one light source. The mobile system further comprises an outer frame, a cover to house the scanner head along with electronic components. The scanner head glides within the outer frame when scanning the area