Dennis Dale Harper

US Patent:

52998100, Apr 5, 1994

Filed:

Jun 23, 1992

Appl. No.:

7/902482

Inventors:

Mark S. Pierce - Palo Alto CA
Milton H. Loper - Mountain View CA
Dennis D. Harper - Campbell CA
David S. Akers - Fremont CA
Samuel Lee - San Jose CA

Assignee:

Atari Games Corporation - Milpitas CA

International Classification:

A63F 922

US Classification:

273434

Abstract:

A vehicle simulator has tandem surfaces for supporting first and second users, who "drive" respective first and simulated vehicles through a simulated space. A solenoid is mounted underneath each surface for selectively impacting the associated surface to give the user the sensation of having his simulated vehicle hit by a projectile. Each user sits in front of a video monitor, and each monitor is electrically connected to a computer. Each computer has a "map" of a simulated space stored in its electronic memory, and the computers are linked through a common RAM. The computers cause their monitors to display a changing video image of the simulated space to model motion of the simulated vehicles through the space, in response to signals from controls that can be manipulated by the operators. Each user controls a trigger which can be pushed to initiate the motion of a simulated projectile through the simulated space toward the user's vehicle. The computer of the shooter sends a signal to the RAM to indicate that s hot has been initiated.

US Patent:

56214316, Apr 15, 1997

Filed:

Apr 29, 1994

Appl. No.:

8/235094

Inventors:

Dennis D. Harper - Campbell CA
Frank Kuan - San Jose CA

Assignee:

Atari Games Corporation - Milpitas CA

International Classification:

G09G 534

US Classification:

345122

Abstract:

The present invention comprises a method and apparatus for finely controlling the rate of animation display in applications such as a video game or simulator. In one embodiment, a floating point animation timer selectively varies or eliminates the number of update periods a video cell is to be displayed to match the display time of the script to a determined time. The determined time can be empirically chosen or dynamically calculated based on the user's input. In another embodiment a sequence table provides an array of update times corresponding to the cells in a script. The number of update times a video cell is displayed can be varied to emphasize certain actions in the animation sequence. This provides a programmer with the ability to create a variety of animation sequences from a limited number of video cells and to finely manipulate the animated character to achieve a specific action.

US Patent:

55198260, May 21, 1996

Filed:

Apr 29, 1994

Appl. No.:

8/236634

Inventors:

Dennis D. Harper - Campbell CA
J. Cameron Petty - Mountain View CA
Stephen R. Riesenberger - San Jose CA

Assignee:

Atari Games Corporation - Milpitas CA

International Classification:

G06F 1500

US Classification:

395152

Abstract:

A system for developing stop motion animation sequences including a lighting system, an image capture system and a video processing system. An object is positioned on a stage in a desired pose and is illuminated. A camera records the illuminated object and the image capture system digitally records this image as a beauty shot. The object is then illuminated by an back light which produces a silhouette. The camera then records this silhouette and the image capture system digitally records this image as a matte shot. The object is then illuminated by an overhead light which produces a shadow on the stage. The camera records this image and the image capture system records this image as a shadow shot. The beauty, matte and shadow shots are then processed by the graphics processing system. Subsequently, the beauty and matte shots are combined to produce a final beauty shot whereby only the portion of the image in the beauty shot that has the same position as the silhouette in the matte shot is included in the final shadow shot.

US Patent:

53642716, Nov 15, 1994

Filed:

Oct 2, 1992

Appl. No.:

7/956035

Inventors:

Jack Aknin - San Carlos CA
Wade Winblad - Hayward CA
Dennis Harper - Campbell CA

Assignee:

Atari Games Corporation - Milpitas CA

International Classification:

G09B 904
G09B 1916

US Classification:

434 61

Abstract:

A bicycle simulator having a follower assembly, a wheelie assembly and power assistance resistance means. A motorcycle simulator having a coupler, a slew generator and a throttle handle. The bicycle and motorcycle simulators having a computer, motors, sensors, controls, and a video display.