This inventor holds 4 USPTO granted patents. Top assignee: Compaq Computer Corporation, Inc.. Active years: 1991-1996.
Company Filing History:
Years Active: 1991-1996
Title: Innovations by James H. Garrett
Introduction
James H. Garrett is a notable inventor based in Spring, TX (US). He has made significant contributions to the field of liquid crystal display (LCD) technology, holding a total of 4 patents. His work focuses on enhancing the performance and visual quality of LCD panels.
Latest Patents
Garrett's latest patents include a circuit for controlling bias voltage used to regulate contrast in an LCD panel. This innovation utilizes a pulse width modulation (PWM) circuit contained in the video controller, allowing for precise control of contrast through a contrast control circuit. The PWM circuit modulates the pulse width of a signal based on the video refresh mode, effectively converting the pulse width modulated signal into a DC bias contrast voltage for the LCD panel.
Another significant patent involves a method and apparatus for displaying different shades of gray on a liquid crystal display. This method spatially and temporarily resolves the on/off states of a two-state display device, providing apparent shades of gray without the flicker commonly associated with such displays. By employing out-of-phase cycling patterns for adjacent pixels, the method enhances image stability and reduces perceived flicker, allowing for the display of up to sixteen shades of gray.
Career Highlights
James H. Garrett has had a distinguished career, working at Compaq Computer Corporation, Inc. His innovations have played a crucial role in advancing display technology, making significant impacts in both consumer and professional applications.
Collaborations
Garrett has collaborated with notable colleagues, including Henry F. Lada, Jr. and Hung Q. Le, contributing to the development of cutting-edge technologies in the field.
Conclusion
James H. Garrett's contributions to LCD technology through his patents and innovations have significantly enhanced the visual experience of display devices. His work continues to influence the industry and improve the quality of visual displays.