Hung Phi Do

US Patent:

7787026, Aug 31, 2010

Filed:

Nov 4, 2004

Appl. No.:

10/981213

Inventors:

Kevin Flory - Livermore CA, US
Hung Do - Fremont CA, US
William Stemper - San Jose CA, US
Yasu Noguchi - Sunnyvale CA, US
Steven D. Loi - San Jose CA, US

Assignee:

Media Tek Singapore Pte Ltd. - Singapore

International Classification:

H04N 5/76
H04N 3/14
H04N 9/083
G06K 9/32

US Classification:

34823199, 348273, 348280, 382300

Abstract:

A camera has a continuous full-resolution burst mode wherein a sequence of full-resolution images is captured, is image processed by a pipeline of dedicated hardware image processing engines, is zoomed by a zoom engine, is compressed by a compression engine, and is stored into nonvolatile storage as a sequence of discrete files. The capturing of images and the storing of files continues at a rate of at least three frames per second until the user indicates burst mode operation is to stop or until nonvolatile storage becomes filled. Although the camera has a buffer memory into which raw sensor data is placed before image processing, the number of images that can be captured in a single burst is not limited by the size of the buffer memory. The cost of a consumer market camera having continuous burst mode capability is therefore reduced by reducing the required amount of buffer memory.

US Patent:

7812879, Oct 12, 2010

Filed:

Oct 30, 2007

Appl. No.:

11/928285

Inventors:

Xinqiao Liu - Mountain View CA, US
Hung Do - San Jose CA, US

Assignee:

Fairchild Imaging - Milpitas CA

International Classification:

H04N 3/14
H04N 5/335

US Classification:

348308, 348302, 348294

Abstract:

An image sensor and method for using the image sensor to capture an image are disclosed. The image sensor includes an imaging array, a first block amplifier and a controller. A first plurality of pixels in the imaging array includes pixels having a photodiode connected to a first node by a gate transistor, a reset transistor connected between the first node and a reset node, a pixel amplifier having an input connected to the first node and an output, and an output gate for connecting the pixel amplifier output to an output bus. The sensor has a monitoring mode and an image capture mode. In the monitoring mode the reset node is connected to the first block amplifier whose output is monitored and used to trigger the image capture mode when the output exceeds a predetermined threshold.

US Patent:

7268338, Sep 11, 2007

Filed:

Jul 6, 2005

Appl. No.:

11/175948

Inventors:

Xinqiao (Chiao) Liu - San Jose CA, US
Hung Do - San Jose CA, US

Assignee:

Fairchild Imaging - Milpitas CA

International Classification:

H03F 3/08

US Classification:

250214AG, 250214 A, 348300, 330308

Abstract:

A CCD imaging array and a charge measurement amplifier for use in such imaging arrays is disclosed. The array includes a plurality of pixels that accumulate charge when exposed to light, a readout amplifier having input and output ports. The readout amplifier has a variable gain that is set by a gain control signal. The readout amplifier also includes a reset path between the input and output ports, the path having an impedance controlled by a reset signal. A controller generates the gain control signal and the reset signal during a charge measurement cycle. Initially the gain is set to a first value after generating the reset signal. The gain is changed to a second value during the charge measurement cycle if the output signal exceeds a first threshold value. The readout amplifier can be constructed from an operational amplifier having a capacitive feedback loop.

US Patent:

20150076321, Mar 19, 2015

Filed:

Sep 13, 2013

Appl. No.:

14/026855

Inventors:

- Nashua NH, US
Hung Do - San Jose CA, US
Xinqiao Liu - Mountain View CA, US

International Classification:

H04N 5/3745
H03F 3/16

US Classification:

2502081, 330294

Abstract:

A column readout amplifier and imaging anay using the same method are disclosed. The column readout amplifier includes a signal amplifier having an amplifier signal output, a first filter capacitor, a buffer amplifier having a buffer amplifier input and a buffer amplifier output, and a switching network. The switching network connects the amplifier signal output to the buffer amplifier input and the buffer amplifier output to the first filter capacitor during a first time period, and connects the amplifier signal output directly to the first filter capacitor during a second time period. The time periods can be of fixed duration or determined by the difference in potential between the input and output of the buffer amplifier. The column readout amplifier can be used in an imaging array to readout columns of pixels.