Safe and low cost computer peripherals with force feedback for consumer applications

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5691898
SERIAL NO

08623660

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method and apparatus for providing safe and low-cost force feedback peripherals for consumer applications. A device microprocessor local to an interface device is coupled to the host by a first interface bus. The microprocessor receives host commands from the host computer on the first interface bus, such as an RS-232 interface, and commands an actuator to apply a force to a user object, such as a joystick, in response to host commands. A sensor detects positions of the user object and outputs signals to the host on a second interface bus, such as a PC game port bus, separate from the first bus. In a 'recoil' embodiment, a user initiates force feedback by pressing a button on the joystick, which sends an activation signal to the actuator. In other recoil embodiments, the host computer can transmit one or more enable signals and/or activation signals to the actuator to enable or command forces. A safety switch of the present invention disables the actuator when the interface device is not in use and enables the actuator when an amount of weight over a predetermined amount is placed on the joystick created by a user grasping the joystick. A circuit of the present invention includes a capacitor for storing power provided by an input signal and supplied to the actuator when forces are to be output.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
IMMERSION CORPORATIONSAN JOSE, CA772

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Braun, Adam C Sunnyvale, CA 81 5469
Rosenberg, Louis B Pleasanton, CA 332 28185
Schena, Bruce M Menlo Park, CA 141 12490

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