Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Patent
1995-07-31
1998-03-03
Teska, Kevin J.
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
395568, 395681, 395840, 395878, 345156, 345161, 345168, 3642382, 364DIG1, G06F 314
Patent
active
057245584
ABSTRACT:
A digital joystick coupled to a conventional computer game port tests for the presence of electrical circuitry to support two joysticks and dynamically configures the digital data for transmission to button inputs for either one or two joysticks in the game port. The digital joystick configures the data for transmission to three or more button input lines on the game ports if it detects the second joystick circuitry, and configures the data for transmission to only two button inputs corresponding to the first joystick if it does not detect the second joystick circuitry. The digital joystick generates a clock which is coupled to one button input in the game port. The remaining button inputs are used to transfer data. Within the computer, the system determines the presence of electrical circuitry for the second joystick and is configured to accept data from both joystick inputs that are active. The computer is configured to accept data from only the first joystick if the second joystick input is not active. The system automatically configures the data to correspond with the electrical circuitry present within the game port without any intervention by the user.
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Adan Manolito E.
Suzuki Hajime
Svancarek Mark K.
Van Flandern Michael W.
Microsoft Corporation
Phan Thai
Teska Kevin J.
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