Wireless transceiver system for computer input devices

Abstract

A wireless interface device for a keyboard of a computer system is achieved. The device comprises a radio transmitter and receiver. A modem encodes data to be sent by the radio transmitter and decodes data received by the radio receiver. A central processing unit is included. A direct signal connection is provided between the wireless interface circuit and a keyboard. A baseband circuit encrypts data to be transmitted and decrypts received data. The wireless interface device has built-in scanning and decoding functions for an input device such as a keyboard or a mouse. The wireless interface device has power saving functions to extend the battery life of the input device. The wireless interface device has the capability of automatically selecting between several communication frequencies or channels. The wireless interface device has the capability of automatically selecting between several data rates.

Description

[0001] This application claims priority to U.S. Provisional Patent Application JAAL-001, “High-Reliability Computer Interface for Wireless Input Device”, Ser. No. 60 / 553,820, filed on Mar. 16, 2004, which is herein incorporated by reference in its entirety. [0002] This application claims priority to U.S. Provisional Patent Application JAAL-002, “Wireless Transceiver System for Computer Input Devices”, Ser. No. 60 / 553,821, filed on Mar. 16, 2004, which is herein incorporated by reference in its entirety. [0003] This application claims priority to U.S. Provisional Patent Application JAAL-003, “Wireless Transceiver System for Computer Input Devices”, Ser. No. 60 / 554,058, filed on Mar. 16, 2004, which is herein incorporated by reference in its entirety. RELATED PATENT APPLICATION [0004] This application is related to U.S. patent application docket number JA05-001, Ser. No. ______, filed on ______, assigned to a common assignee. BACKGROUND OF THE INVENTION [0005] (1) Field of the Inventi...

AI Technical Summary

Benefits of technology

"The present invention provides a wireless transceiver system for computer input devices that is effective, easy to manufacture, and has various features such as built-in scanning and decoding functions, power saving, automatic selection of communication frequencies, and compatibility with various regulatory environments. The system includes a host computer with a wireless interface circuit for data communication, and a wireless interface device for a keyboard or mouse. The device comprises a radio transmitter and receiver, a modem, a baseband circuit, and a host computer with a wireless interface circuit. The invention also includes a baseband circuit for data encryption and a modem circuit for signal transmission and reception. The system enables two-way wireless communication between the host computer and the input device."

Problems solved by technology

Unfortunately, batteries used to power existing wireless input devices typically last for a period of time significantly less than the useful life of such devices.

As a consequence, the convenience and value of such devices are diminished as a consequence of the need for regular battery replacement.

Existing wireless input devices are also frequently of limited range and the wireless link established for communication with the host computer is often rather unreliable and / or exhibits a high latency.

In addition, such wireless links are often relatively insecure and thus susceptible to eavesdropping or unauthorized monitoring.

Images