초록 ▼

A digital joystick operates in a digital mode or an analog emulation mode. In the digital mode, the joystick generates digital data indicating the position of a control stick and the status of buttons and transmits the digital data to the computer. The joystick may be coupled to the computer through

A digital joystick operates in a digital mode or an analog emulation mode. In the digital mode, the joystick generates digital data indicating the position of a control stick and the status of buttons and transmits the digital data to the computer. The joystick may be coupled to the computer through a game port or a conventional interface port. Computer software operating within the computer can receive digital data directly from the joystick if it is operating in the digital mode. When in the analog emulation modes the joystick emulates resistances related to the position of the control stick. The emulated resistance data emulates the value of corresponding resistances in a conventional joystick. The resistance values may be derived from a programmable resistor, a programmable impedance, or a programmable current source. Multiplexers may also be used to couple the appropriate resistance value to the conventional game port input.

대표청구항 ▼

[ What is claimed is:] [1.] A digital joystick system for use with a computer port having an analog input, the joystick comprising:a control stick operable by a user;a position sensing subsystem to detect a position of said control stick and to generate digital position data corresponding to said de

[ What is claimed is:] [1.] A digital joystick system for use with a computer port having an analog input, the joystick comprising:a control stick operable by a user;a position sensing subsystem to detect a position of said control stick and to generate digital position data corresponding to said detected position; anda programmable resistance emulator coupled to said position sensing subsystem and having an output couplable to the analog input, said resistance emulator receiving said digital position data and in response thereto emulating a resistance value at said output corresponding to said detected position.