Data processing apparatus having control element for detecting false touch

• US 6,532,003 B2
• Filed: 07/24/1998
• Issued: 03/11/2003
• Est. Priority Date: 01/08/1998
• Status: Expired due to Fees

• Current Assignee: Fujitsu Takamisawa Component Limited
• Original Assignee: Fujitsu Takamisawa Component Limited
• Inventors: Nagao, Naoyuki
• Primary Examiner(s): Hjerpe, Richard
• Assistant Examiner(s): Nguyen, Kevin M.
• Application Number:
  US09/121,846
• Publication Number:
  US 20020190959A1
• Time in Patent Office: 1,691 Days
• Field of Search: 345/174, 345/173, 345/175, 345/176, 345/177, 345/178, 345/179, 345/180, 345/182, 345/183, 345/168, 345/169, 345/157, 345/158, 345/160, 345/905, 341/22
• US Class Current: 345/168
• CPC Class Codes: G06F 3/038 Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

A data processing apparatus includes a coordinate detecting device outputting coordinate data of a touch point generated by a touch on a coordinate input panel, a keyboard outputting key entry data and a processor executing predetermined processes corresponding to the coordinate data and the key entry data. The data processing device further includes a control element detecting false coordinate data generated by a false touch on the coordinate input panel during a key entry operation and for controlling key entry data other than the false coordinate data as valid data.

Claims

1. A data processing apparatus, comprising:

a coordinate detecting device outputting coordinate data of a touch point generated by a touch on a coordinate input panel;

a keyboard outputting key entry data;

a processor executing predetermined processes corresponding to the coordinate data and the key entry data; and

a control element detecting false coordinate data generated by a false touch on the coordinate input panel during a key entry operation and controlling key entry data other than the false coordinate data as valid data, without disabling operation of said coordinate detecting device, wherein said control element comprises

a receiving element receiving both the key entry data from said keyboard and the coordinate data from said coordinate detecting device;

a time monitoring element monitoring a keystroke time interval of said keyboard and a touch period of said coordinate detecting device; and

a determination element determining whether the coordinate data from said coordinate detecting device during a key entry operation is valid coordinate data on the basis of the keystroke time interval and the touch period, by comparing the keystroke time interval to the touch period,

said processor receiving the valid coordinate data and executing corresponding processes.

2. The data processing apparatus as claimed in claim 1, wherein the control element comprises computer readable program code means causing said processor to receive the valid data and execute corresponding processes.

3. A computer usable medium, comprising:

first computer readable program code means causing a data processing apparatus to execute predetermined processes corresponding to coordinate data and key entry data; and

second computer readable program code means causing the data processing apparatus to detect false coordinate data generated by a false touch on a coordinate input panel during a key entry operation and to control key entry data other than the false coordinate data as valid data, without disabling operation of the coordinate detecting device, by comparing a keystroke time interval of a keyboard to a touch period of the coordinate input panel.

4. The computer usable medium as claimed in claim 3, further comprising:

third computer readable program code means causing the data processing apparatus to receive both the key entry data from a keyboard and the coordinate data from a coordinate detecting device;

fourth computer readable program code means causing the data processing apparatus to monitor a keystroke time interval of the keyboard and a touch period of the coordinate detecting device; and

fifth computer readable program code means causing the data processing apparatus to determine whether the coordinate data from the coordinate detecting device during a key entry operation is valid coordinate data on the basis of the keystroke time interval and the touch period.

5. A computer program product for use with a data processing apparatus, comprising:

a coordinate detecting device outputting coordinate data of a touch point generated by a touch on a coordinate input panel;

a keyboard outputting key entry data;

a processor executing predetermined processes corresponding to the coordinate data and the key entry data; and

a memory storing computer readable program code means causing said processor to detect false coordinate data generated by a false touch on the coordinate input panel during a key entry operation and to control key entry data other than the false coordinate data as valid data, without disabling operation of the coordinate detecting device, by comparing a keystroke time interval of a keyboard to a touch period of the coordinate input panel.

6. The computer program product as claimed in claim 5, wherein said memory comprises:

second computer readable program code means causing the data processing apparatus to receive both the key entry data from said keyboard and the coordinate data from said coordinate detecting device;

third computer readable program code means causing the data processing apparatus to monitor a keystroke time interval of said keyboard and a touch period of said coordinate detecting device; and

fourth computer readable program code means causing the data processing apparatus to determine whether the coordinate data from said coordinate detecting device during a key entry operation is valid coordinate data on the basis of the keystroke time interval and the touch period.

7. A method in a computer system executing predetermined processes corresponding to coordinate data from a coordinate detecting device having a data input panel and key entry data from a keyboard, detecting false coordinate data generated by a false touch on the coordinate input panel during a key entry operation, and controlling key entry data other than the false coordinate data as valid data, comprising:

receiving both the key entry data from the keyboard and the coordinate data from the coordinate detecting device;

monitoring a keystroke time interval of the keyboard and a touch period of the coordinate detecting device; and

determining whether the coordinate data from the coordinate detecting device during a key entry operation is valid coordinate data on the basis of the keystroke time interval and the touch period, without disabling operation of the coordinate detecting device, by comparing the keystroke time interval of the keyboard to the touch period of the coordinate input panel.

8. A data processing apparatus with a coordinate input panel for generating touch point coordinate data and a keyboard for generating key entry data, comprising a control element detecting false coordinate data generated by a false touch on the coordinate input panel during a key entry operation and controlling key entry data other than the false coordinate data as valid data, without disabling operation of the coordinate detecting device, by comparing a keystroke time interval of a keyboard to a touch period of the coordinate input panel.

9. A method for detecting false coordinate data generated by erroneously touching a coordinate input device, comprising:

receiving, during a key entry operation, key entry data from a keyboard and coordinate data from a coordinate detecting device;

monitoring a keystroke time interval of the keyboard and a touch period of the coordinate detecting device; and

determining whether the coordinate data is valid using the keystroke time interval and the touch period, without disabling operation of the coordinate detecting device, by comparing the keystroke time interval of the keyboard to the touch period of the coordinate input panel.