Touch sensitive display panel
First Claim
Patent Images
1. A touch sensitive display panel comprising:
- a noisy display panel having a display screen on which images are displayed; and
an electronic writeboard on said noisy display panel and overlying said display screen, said electronic writeboard detecting user input and providing output to said noisy display panel, said electronic writeboard including means to compensate for noise generated by said noisy display panel, said compensation means inhibiting said electronic writeboard from processing of said user input upon detection of noise from said noisy display panel.
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Accused Products
Abstract
A touch sensitive display panel comprises a noisy display panel having a display screen on which images are displayed. An electronic writeboard is provided on the noisy display panel and overlies the display screen. Images displayed on the display screen are visible through the electronic writeboard. The electronic writeboard detects user input and provides output to alter displayed images. The electronic writeboard includes means to compensate for noise generated by the noisy display panel.
129 Citations
35 Claims
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1. A touch sensitive display panel comprising:
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a noisy display panel having a display screen on which images are displayed; and
an electronic writeboard on said noisy display panel and overlying said display screen, said electronic writeboard detecting user input and providing output to said noisy display panel, said electronic writeboard including means to compensate for noise generated by said noisy display panel, said compensation means inhibiting said electronic writeboard from processing of said user input upon detection of noise from said noisy display panel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A touch sensitive display panel comprising:
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a plasma display panel having a display screen on which images are displayed; and
an electronic writeboard including a generally transparent touch sensitive panel overlying said display screen, said touch sensitive panel generating contact position data signals in response to user input made via contact with said touch sensitive panel;
a controller receiving the output of said touch sensitive panel and processing said contact position data signals thereby to change images displayed on said display screen; and
a noise detector for detecting noise signals emitted by said plasma display panel, said noise detector inhibiting said controller from processing said contact position data signals when the presence of noise signals generated by said plasma display panel is above a threshold level.- View Dependent Claims (15, 16, 17, 18, 19)
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20. An electronic writeboard for a noisy display panel comprising:
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a generally transparent touch sensitive panel to overlie a display screen of said noisy display panel, said touch sensitive panel generating contact position data signals in response to user input made via contact with said touch sensitive panel;
a controller receiving the output of said touch sensitive panel and processing said contact position data signals thereby to detect the position of contact made with said touch sensitive panel; and
a noise detector for detecting noise signals emitted by said noisy display panel, said noise detector inhibiting said controller from processing said contact position data signals when the presence of noise signals generated by said noisy display panel is above a threshold value. - View Dependent Claims (21, 22, 23, 24, 25)
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26. A touch sensitive display panel comprising:
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a noisy display panel having a display screen on which images are displayed; and
an electronic writeboard on said noisy display panel and overlying said display screen and through which said images are visible, said electronic writeboard including a controller detecting user input and providing output to alter said images and a noise detector sensing noise emitted by said noisy display panel, said controller inhibiting processing of said user input when noise is detected by said noise detector. - View Dependent Claims (28, 29)
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27. A touch sensitive display panel comprising:
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a noisy display panel having a display screen on which images are displayed; and
an electronic writeboard on said noisy display panel and overlying said display screen and through which said images are visible, said electronic writeboard including a touch sensitive panel overlying said display screen;
a controller to read contact position data from touch sensitive panel generated in response to user input; and
timing means to enable said controller to process said contact position data signals when noise generated by said noisy display panel is below a threshold level, wherein said timing means includes a timer responsive to said controller, said controller initiating said timer at intervals to count a duration and monitoring the noisy display panel during the duration of said timer to detect noise above said threshold level, said controlling disregarding contact position data received from said touch sensitive panel during the duration of said timer when noise above said threshold level is detected.
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30. An electronic writeboard for a noisy display panel comprising:
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a touch sensitive panel to overlie a display screen of said noisy display panel, said touch sensitive panel generating user input in response to contact thereon;
a controller detecting said user input and generating output to alter images displayed on said display screen; and
a noise detector sensing noise emitted by said noisy display panel, said controller disregarding user input generated by said touch sensitive panel when noise is sensed by said noise detector. - View Dependent Claims (31, 32, 33)
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34. An electronic writeboard for a noisy display panel comprising:
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a touch sensitive panel to overlie a display screen of said noisy display panel, said touch sensitive screen generating contact position data in response to contact thereon;
a controller receiving said contact position data and in response generating output to alter images displayed on said display screen; and
a timing mechanism enabling said controller to process said contact position data only when noise generated by said noisy display panel is below a threshold level, wherein said timing mechanism includes a timer responsive to said controller, said controller initiating said timer at intervals to count a duration and monitoring the noisy display panel during said duration to detect noise above said threshold level, said controller disregarding contact position data received from said touch sensitive panel during said duration when noise above said threshold level occurs during said duration.
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35. An electronic writeboard for a noisy display panel comprising:
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a touch sensitive panel to overlie a display screen of said noisy display panel, said touch sensitive screen generating contact data in response to contact thereon;
a controller acquiring the contact data at intervals and processing said data to generate output signals; and
a synchronization mechanism in communication with said controller to time acquisition of the contact data by said controller to avoid data acquisition during noisy periods of said noisy display panel, wherein said synchronization mechanism includes a timer responsive to said controller, said controller initiating said timer at each interval to count a duration and monitoring the noisy display panel during said duration to detect noise above a threshold level, said controller disregarding contact data generated by the touch sensitive panel over the duration of an interval when noise above the threshold level occurs during that interval.
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Specification