[H Keith Nishihara] US CA Los Altos One embodiment of the invention includes a gesture recognition interface system that determines input gestures based on changes in relative locations of an input object to initiate device inputs associated with the input gestures. The system comprises at least one light source positioned to illuminate a background surface in a first light spectrum to generate a light contrast difference between the input object and the background surface. The system also comprises a display device configured to display at least one calibration pattern on the background surface in a second light spectrum in response to a calibration command and at least one camera configured to receive images of the background surface in both the first light spectrum and the second light spectrum. The system further comprises an automated calibration component configured to issue the calibration command and to associate features of the at least one calibration pattern in the received images with known physical locations.

[Bran Ferren, H. Keith Nishihara] US CA Beverly Hills One embodiment of the invention includes a gesture recognition interface system. The interface system may comprise at least one light source positioned to illuminate a first side of a light-diffusive screen. The interface system may also comprise at least one camera positioned on a second side of the light-diffusive screen, the second side being opposite the first side, and configured to receive a plurality of images based on a brightness contrast difference between the light-diffusive screen and an input object. The interface system may further comprise a controller configured to determine a given input gesture based on changes in relative locations of the input object in the plurality of images. The controller may further be configured to initiate a device input associated with the given input gesture.

[NISHIHARA, H. Keith] 2200 Mission College Boulevard MS: RNB-4-150 Santa Clara, California 95052;1468 Richardson Ave. Los Altos, California 94024 In a digital picture created by combining an outer zone from a first lens and an inner zone from a second lens, the two zones may be blended together in an intermediate zone created by processing pixels from both the outer and inner zones. The blending may be performed by creating pixels in the intermediate zone that are progressively less influenced by pixels from the first lens and progressively more influenced by pixels from the second lens, as the location of the intermediate pixels transitions from the outer zone to the inner zone. Image registration may be used to achieve the same scale before blending.

[CANTU, Gary, Russell, NISHIHARA, H., Keith, FU, Andrew, N.] 536 Weddell Dr., Ste. 1 Sunnyvale, CA 94084;1322 Pebble Drive San Carlos, CA 94070;1781 Austin Avenue Los Altos, CA 94024;1781 Austin Avenue Los Altos, CA 94024 A method of facilitating electronic presentations using a portable storage device (3) in place of a personal computer to generate an array of images for display on an electronic display system (8) such as an LCD projector. A laptop computer is typically employed to generate a series of electronic slides as part of a presentation to an audience. A smaller, simpler, more robust device may be employed to accomplish the same task increasing both convenience to the presenter and reliability. The system includes a device (3) that receives and stores presentation images from a personal computer prior to the presentation. At the time of presentation, the device is connected to a display device (8) such as an overhead LCD projection system via a standard video interface, such as a VGA port.

[Kenneth W. Aull, H Keith Nishihara, Shi-Ping Hsu] US VA Fairfax A system and method is provided for a gesture recognition interface system. The system comprises a projector configured to project colorless light and visible images onto a background surface. The projection of the colorless light can be interleaved with the projection of the visible images. The system also comprises at least one camera configured to receive a plurality of images based on a reflected light contrast difference between the background surface and a sensorless input object during projection of the colorless light. The system further comprises a controller configured to determine a given input gesture based on changes in relative locations of the sensorless input object in the plurality of images, and being further configured to initiate a device input associated with the given input gesture.

[KURT AMUNDSON, NATHAN HARDING, H KEITH NISHIHARA, RUSSELL B FORD] US;;;;

[H. Keith Nishihara, Shi-Ping Hsu, Adrian Kaehler, Lars Jangaard] US CA Los Altos One embodiment of the invention includes a method of providing device inputs. The method includes illuminating hand gestures performed via a bare hand of a user in a foreground of a background surface with at least one infrared (IR) light source. The method also includes generating a first plurality of silhouette images associated with the bare hand based on an IR light contrast between the bare hand and the background surface and generating a second plurality of silhouette images associated with the bare hand based on an IR light contrast between the bare hand and the background surface. The method also includes determining a plurality of three-dimensional features of the bare hand relative to the background surface based on a parallax separation of the bare hand in the first plurality of silhouette images relative to the second plurality of silhouette images. The method also includes determining a provided input gesture based on the plurality of three-dimensional features of the bare hand and comparing the provided input gesture with a plurality of predefined gesture inputs in a gesture library. The method further includes providing at least one device input corresponding to interaction with displayed visual content based on the provided input gesture corresponding to one of the plurality of predefined gesture inputs.

[H Keith Nishihara, Neil D. Hunt, Catherine Lu, Julie Raymond] US CA Los Altos A network of interreporting participant stations configured to monitor and analyze station movement such that activity levels of the individual stations can be determined and reported across the network to alert participant stations whenever the activity level of any one of the participant stations has dropped to a pre-determined level.

[H. Keith Nishihara, Shi-Ping Hsu, Adrian Kaehler, Eric Gradman, Kjerstin Williams] US CA Los Altos One embodiment of the invention includes a computer interface system. The system comprises a user interface screen configured to display visual content and an input system configured to detect a presence of an input object within a threshold distance along a normal axis of the user interface screen. The system further comprises a graphical controller configured to magnify a portion of the visual content that is located at an approximate location of a base of the normal axis on the user interface screen.

[NISHIHARA, H., Keith, BLAU, David, A.] Suite 101 124 University Street Palo Alto, CA 94301;1468 Richardson Avenue Los Altos, CA 94024;23005 Standing Oak Court Cupertino, CA 95014 A multiple-head scanning device (20) for reading an image stored on a photostimulable phosphor storage screen (10), comprising, a rotatable frame having a center (13) and an outer perimeter (15); a photomultiplier tube (40) mounted to the rotatable frame at a location proximal the center (13) of the rotatable frame; a plurality of radially extending optical trains (12) mounted to the rotatable frame at 120 degrees to one another, each optical train (12) configured to direct incident laser light towards phosphor storage screen (10) and to direct response radiation emitted by phosphor storage (10) screen in response to the incident laser light towards the photomultiplier tube (40).