Frederick P Herrmann

US Patent:

6476784, Nov 5, 2002

Filed:

Jan 8, 1998

Appl. No.:

09/004706

Inventors:

Matthew Zavracky - North Attleboro MA
Jeffrey Jacobsen - Hollister CA
Frederick P. Herrmann - Sharon MA
Wen-Foo Chern - Wayland MA
Hiap L. Ong - Taipai, TW
John C. C. Fan - Chestnut Hill MA
Alan Richard - Wrentham MA

Assignee:

Kopin Corporation - Taunton MA

International Classification:

G09G 336

US Classification:

345 88, 345169, 345 87

Abstract:

An active matrix color sequential liquid crystal display has an active matrix circuit, a counterelectrode panel and an interposed layer of liquid crystal. The active matrix circuit has an array of transistor circuits formed in a first plane. Each transistor circuit is connected to a pixel electrode in an array of pixel electrodes having a small area. The display is housed in a portable display device having a docking port for a memory card used to input video data for the display.

US Patent:

6909419, Jun 21, 2005

Filed:

Sep 15, 1998

Appl. No.:

09/153744

Inventors:

Matthew Zavracky - Plympton MA, US
Jeffrey Jacobsen - Hollister CA, US
Frederick P. Herrmann - Sharon MA, US
Wen-Foo Chern - Wayland MA, US
Hiap L. Ong - Taipai, TW
John C. C. Fan - Chestnut Hill MA, US
Alan Richard - Wrentham MA, US
Ron Gale - Sharon MA, US
Jason Lo - Westboro MA, US
Stephen A. Pombo - Campbell CA, US
Rodney Bumgardner - Los Gatos CA, US

Assignee:

Kopin Corporation - Taunton MA

International Classification:

G09G003/36

US Classification:

345102, 345 88, 345183

Abstract:

An active matrix color crystal display has an active matrix circuit, a counterelectrode panel and an interposed layer of liquid crystal. The active matrix display is located in a portable microdisplay system that has a display computer that generates images to be displayed on the liquid crystal display and connected to the active matrix liquid crystal display. A data link transmits data at a rate of speed of greater than 200 Mbytes per second in series for at least a portion between the display computer and the active matrix liquid crystal display. In a preferred embodiment, the display system has a randomizing device that alternates the amplifier through which an analog video signal passes.

US Patent:

7057668, Jun 6, 2006

Filed:

Apr 19, 2002

Appl. No.:

10/127338

Inventors:

Frederick P. Herrmann - Sharon MA, US

Assignee:

Kopin Corporation - Taunton MA

International Classification:

H04N 9/12

US Classification:

348554

Abstract:

A color sequential display operative in one of two alternate modes. The first mode is a color sequential mode in which primary color images are displayed in successive frames while respective background light sources are simultaneously flashed on the display. The second mode is a monochrome mode in which the luminance Y signal is displayed in successive frames along with flashes of background white light.

US Patent:

7138993, Nov 21, 2006

Filed:

Feb 19, 2003

Appl. No.:

10/370038

Inventors:

Frederick P. Herrmann - Sharon MA, US

Assignee:

Kopin Corporation - Taunton MA

International Classification:

G09G 5/00

US Classification:

345211, 345205

Abstract:

An AC-coupled display driver circuit includes one or more DC-restore switches that are integrated within a liquid crystal display. A liquid crystal display system includes a coupling capacitor coupled at one end to a system input video signal, the coupling capacitor providing a display input video signal having a DC level offset. A liquid crystal display device coupled to another end of the coupling capacitor receives the first display input video signal at a video input for driving the display device. A switch integrated within the display device provides DC restore to the coupling capacitor.

US Patent:

7242383, Jul 10, 2007

Filed:

May 10, 1999

Appl. No.:

09/309155

Inventors:

Matthew Zavracky - Plympton MA, US
Jeffrey Jacobsen - Hollister CA, US
Frederick P. Herrmann - Ann Arbor MI, US
Wen-Foo Chern - Wayland MA, US
Hiap L. Ong - Taipai, TW
John C. C. Fan - Chestnut Hill MA, US
Alan Richard - Wrentham MA, US
Ronald P. Gale - Sharon MA, US
Jason Lo - Westboro MA, US
Stephen A. Pombo - Campbell CA, US
Rodney Bumgardner - Los Gatos CA, US

Assignee:

Kopin Corporation - Taunton MA

International Classification:

G09G 3/36

US Classification:

345102, 345 88, 345101

Abstract:

An active matrix color crystal display has an active matrix circuit, a counterelectrode panel and an interposed layer of liquid crystal. The active matrix display is located in a portable microdisplay system that has a display computer that generates images to be displayed on the liquid crystal display and connected to the active matrix liquid crystal display. A data link transmits data at a rate of speed of greater than 200 Mbytes per second in series for at least a portion between the display computer and the active matrix liquid crystal display. In a preferred embodiment, the display system has a randomizing device that alternates the amplifier through which an analog video signal passes.

US Patent:

7522694, Apr 21, 2009

Filed:

Nov 14, 2007

Appl. No.:

11/985347

Inventors:

Frederick P. Herrmann - Sharon MA, US
Kun Zhang - Austin TX, US

Assignee:

Kopin Corporation - Taunton MA

International Classification:

G11C 19/00

US Classification:

377 64, 377 70, 377 73

Abstract:

A high voltage shift register stage which directly accepts low voltage clock signal inputs without using clock buffers. In particular, a shift register stage circuit is adapted to operate with a low voltage swing clock signal, with the stage circuit having a single state node, a, driven directly. This arrangement allows for reduced power consumption and higher operating speeds.

US Patent:

7595782, Sep 29, 2009

Filed:

Feb 10, 2004

Appl. No.:

10/775765

Inventors:

Frederick P. Herrmann - Sharon MA, US

Assignee:

Kopin Corporation - Taunton MA

International Classification:

G09G 3/36

US Classification:

345 98, 345 87, 345 90, 345100, 345103

Abstract:

An apparatus and method can convert digital data to analog data using column load capacitances on adjacent pairs of column lines of the LCD. The apparatus includes a data bus containing digital data. A row buffer is coupled to the data bus for receiving and distributing the digital data. A switch network is coupled to the row buffer for converting the digital data received from the row buffer to analog data using column load capacitances on adjacent pairs of column lines of the LCD.

US Patent:

7672420, Mar 2, 2010

Filed:

Apr 8, 2009

Appl. No.:

12/420476

Inventors:

Frederick P. Herrmann - Sharon MA, US
Kun Zhang - Austin TX, US

Assignee:

Kopin Corporation - Taunton MA

International Classification:

G11C 19/00

US Classification:

377 64, 377 70, 377 73

Abstract:

A high voltage shift register stage which directly accepts low voltage clock signal inputs without using clock buffers. In particular, a shift register stage circuit is adapted to operate with a low voltage swing clock signal, with the stage circuit having a single state node, a, driven directly. This arrangement allows for reduced power consumption and higher operating speeds.