| 摘要 |
In an electronic game, the position of a joystick as determined by a plurality of switches (32) and the operation of a fire button is encoded in digital form by an encoder (34). A pulse position modulator (36) enables the digital signal to be transmitted through an infra-red link (16) to the game computer where the signal is demodulated by a pulse position demodulator (48). A key decoder (49) decodes the digital information with the aid of an address decode circuit (42) and the information regarding the position of the joystick and whether or not the fire button is operated is supplied to the computer (10) through a buffer (50). <IMAGE> |
