Victor D Hernandez

US Patent:

42675952, May 12, 1981

Filed:

Feb 4, 1980

Appl. No.:

6/118035

Inventors:

Victor M. Hernandez - Roanoke VA

Assignee:

International Telephone and Telegraph Corporation - New York NY

International Classification:

G11B 509

US Classification:

375 95

Abstract:

A decoder is provided which does not require the use of a retiming circuit. The decoder operates with an AMI signal, and operates to detect a transition occurring at the center of a bit cell to blank out those transitions which do not coincide with the encoding clock. The decision is made by examining the time between received transitions. Once this is accomplished, an asynchronous logic circuit with two states of memory can be used to structure the decoded AMI data into a NRZ or other format by storing the transitions which occur in the middle of the previous bit cell and outputting a first binary value during the following bit cell for a transition, or if no transitions have occurred in the middle of the previous bit cell, a second binary value is outputted during the following bit period.

US Patent:

20220183547, Jun 16, 2022

Filed:

Oct 14, 2021

Appl. No.:

17/501894

Inventors:

- Fribourg, CH
Mark Andrew Zielke - Lake Forest CA, US
Victor Manuel Hernandez - Fort Worth TX, US
Philip Matthew McCulloch - Mansfield TX, US

International Classification:

A61B 3/00
A61B 3/11
A61B 3/103

Abstract:

A system for predicting post-operative vignetting in an eye of a subject includes a controller having a processor and a tangible, non-transitory memory on which instructions are recorded. The controller is in communication with a diagnostic module adapted to store pre-operative anatomic data of the eye as an eye model. The system includes a projection module and a ray tracing module selectively executable by the controller. The projection module is adapted to determine imputed post-operative variables of the eye based at least partially on the pre-operative anatomic data and the intraocular lens. The ray tracing module is adapted to calculate propagation of light through the eye. The ray tracing module is executed to determine a light distribution for respective visual field angles across a predefined field of view. The controller is configured to determine one or more post-operative vignetting parameters based at least partially on the light distribution.