Joseph Yun Lin

US Patent:

20170295337, Oct 12, 2017

Filed:

Jun 28, 2017

Appl. No.:

15/635262

Inventors:

- Baltimore MD, US
Philippe O. Pouliquen - Baltimore MD, US
Andreas G. Andreou - Baltimore MD, US
Joseph H. Lin - Lowell MA, US

International Classification:

H04N 5/378
H04N 5/374
H04N 5/365
G01J 1/44

Abstract:

A computational sensing array includes an array of sensing elements. In each sensing element, a first signal is generated from a transducer. A second signal is produced by a collection unit in response to receiving the first signal. The second signal may be modified, in a conditioning unit. A sensing element preprocessing unit generates a word representing the value of the modified second signal, and may produce an indication of change of the first signal. A current value of the word may be stored in a state holding element local to the sensing element, and a previous value of the word may be retained in a further state holding element local to the sensing element.

US Patent:

20170131143, May 11, 2017

Filed:

Jul 2, 2014

Appl. No.:

15/318373

Inventors:

Andreas G. ANDREOU - Baltimore MD, US
Joseph H. LIN - Arlington MA, US
Philippe O. POULIQUEN - Baltimore MD, US
Charbel G. RIZK - Sykesville MD, US
- Baltimore MD, US

International Classification:

G01J 1/44
H01L 31/02
H01L 31/0352
H01L 31/107

Abstract:

A photodetection circuit includes an avalanche photodiode and a mode switching circuit that may be configured to selectively switch an operating mode of the photodetection circuit between linear mode and Geiger mode. The photodetection circuit may further include a quenching circuit configured to quench and reset the avalanche photodiode in response to an avalanche event when the photodetection circuit is operated in Geiger mode. The photodetection circuit may additionally include an integration circuit configured to integrate photocurrent output by the photodiode and generate integrated charge units when the photodetection circuit is operated in linear mode. The photodetection circuit may also include a counter configured to count pulses output by the avalanche photodiode when the photodetection circuit is operated in Geiger mode and to count integrated charge units generated by the integration circuit when the photodetection circuit is operated in linear mode.

US Patent:

20160050382, Feb 18, 2016

Filed:

Oct 27, 2015

Appl. No.:

14/923784

Inventors:

- Baltimore MD, US
Philippe O. Pouliquen - Baltimore MD, US
Andreas G. Andreou - Baltimore MD, US
Joseph H. Lin - Arlington MA, US

International Classification:

H04N 5/378
H04N 5/357

Abstract:

A computational sensing array includes an array of sensing elements. In each sensing element, a first signal is generated from a transducer. A second signal is produced by a collection unit in response to receiving the first signal. The second signal may be modified, in a conditioning unit. A sensing element preprocessing unit generates a word representing the value of the modified second signal, and may produce an indication of change of the first signal. A current value of the word may be stored in a state holding element local to the sensing element, and a previous value of the word may be retained in a further state holding element local to the sensing element.