Method for transmitting multimedia wireless data to a host system

• US 6,542,149 B1
• Filed: 12/16/1999
• Issued: 04/01/2003
• Est. Priority Date: 09/22/1999
• Status: Expired due to Fees

• Current Assignee: SJK Co., Ltd.
• Original Assignee: SJK Co., Ltd.
• Inventors: Chung, Sun A
• Primary Examiner(s): Liang, Regina
• Application Number:
  US09/465,020
• Time in Patent Office: 1,202 Days
• Field of Search: 345/158, 345/169, 348/734, 340/825.56, 340/825.57, 340/825.69, 340/825.72, 340/825.44, 340/7.2
• US Class Current: 345/158
• CPC Class Codes: G06F 3/0227 Cooperation and interconnection of the input arrangement with other functional units of a computer G06F3/023 - G06F3/037 take precedence
• CPC Class Codes: G06F 3/0231 Cordless keyboards

Abstract

The present invention provides a method for transmitting multimedia wireless data to a host system, which comprises the steps of generating a key signal corresponding to a selected key; converting the key signal into a series of data symbols, each of the data symbols having a plurality of chip data, and activating one or more chip data from the plurality of chip data; and converting each data symbol having the one or more activated chip data into an infrared pulse stream and transmitting it as the multimedia wireless data. Further, as a result of activating only a portion of of the plurality of chip data, the power consumption of the system is lowered.

Claims

1. A method for transmitting wireless input data from a data entry device to a host system, comprising the steps of:

(a) formulating input data to be provided from the data entry device to the host system in a form of a packet of N bytes, the packet including codes for identifying the data entry device and representing a data input generated by the data entry device, N being an integer greater than three;

(b) dividing the N bytes of the packet into a series of data symbol, each data symbol being composed of two bits and having an identical data symbol duration;

(c) converting each data symbol into a series of four chips, each chip having an equal chip duration and the sum of four chip durations being equal to one data symbol duration;

(d) activating one chip among the series of four chips to thereby transmit the wireless input data from the data entry device to the host system.

2. The method of claim 1, wherein the data entry device is one of a desk top keyboard, a mouse, a track-ball, a tablet, a joystick and a touchpad.

3. The method of claim 1, wherein the activating step (d) is carried out by providing an infrared pulse during one chip duration.

4. The method of claim 1, wherein said N is 6.