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Control method of a plurality of locators and control device of same

  • US 5,587,559 A
  • Filed: 12/01/1994
  • Issued: 12/24/1996
  • Est. Priority Date: 11/18/1994
  • Status: Expired due to Term
First Claim
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1. In a data processing system including a hardware and its operating system which process only information input through a single pointing device, a control method for utilizing a plurality of pointing devices comprising;

  • a first storing step for storing stationary information, independent of time, on each one of the plural pointing devices and individual device information on each one of the pointing devices, containing current sampling data which is rewritten depending on every sampling operation of the pointing device, as the individual item corresponding to the pointing device in an individual device information table;

    a second storing step for storing a table pointer to identify the stored position of the individual device information on each one of the pointing devices in the individual device information table;

    a third storing step for storing the whole number of pointing devices and device status information representing current state of each one of the pointing devices;

    a retrieval step for retrieving the required device information table by using the device status information and the table pointer, in response to event generated in any one of the plural pointing devices, or any request from the application, or at every predetermined period;

    a control step for controlling the device information table to refer the content of the required device information table;

    an ordinary data transmit step for sequentially transmitting sampling information representing coordinates and so on supplied from one of the plural pointing devices, as a mouse information to the operating system in time sharing manner;

    a selecting step for selecting one of the plural pointing devices in response to the event generated; and

    a final data transmit step for transmitting only information from the selected pointing device as the currently required mouse information to the operating system.

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