Digital display driving circuit for light emitting diode display
First Claim
1. A digital display driving circuit of light emitting diode (LED) displays for driving LED displays to display video images, comprising:
- a digital gamma-correction circuit, coupled to directly receive digitized displaying data from a display memory unit, for performing a digital gamma-correction process on the digitized displaying data to produce video signals;
an LED timing control circuit, coupled separately with an external time control circuit and said digital gamma-correction circuit, for converting a plurality of timing signals into an LED timing control signal; and
a PWM and shutdown circuit for supplying power to the LED display and shutting down the LED display when the LED display has been idle for a preset period.
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Accused Products
Abstract
A digital display driving circuit is provided for driving a light emitting diode (LED) display to generate video images. The digital display driving circuit comprises a digital gamma-correction circuit for performing a digital gamma-correction process on the digitized video data to produce the desired video signals. An LED timing control circuit is applied for converting a plurality of timing signals into an LED timing control signal. And a PWM and shutdown circuit is applied for supplying power to the LED display and shutting down the LED display when the LED display has been idle for a preset period.
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Citations
17 Claims
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1. A digital display driving circuit of light emitting diode (LED) displays for driving LED displays to display video images, comprising:
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a digital gamma-correction circuit, coupled to directly receive digitized displaying data from a display memory unit, for performing a digital gamma-correction process on the digitized displaying data to produce video signals;
an LED timing control circuit, coupled separately with an external time control circuit and said digital gamma-correction circuit, for converting a plurality of timing signals into an LED timing control signal; and
a PWM and shutdown circuit for supplying power to the LED display and shutting down the LED display when the LED display has been idle for a preset period. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An digital display driving circuit for driving a digital display panel to display a video image, comprising:
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a digital gamma-correction circuit, coupled to directly receive digitized displaying data from a display memory unit, for performing a digital gamma-correction process on the digitized displaying data to produce video signals; and
a timing control circuit, coupled separately with an external time control circuit and said digital gamma-correction circuit, for converting a plurality of timing signals into an timing control signal for the digital display panel. - View Dependent Claims (8, 9, 10, 11)
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12. A displaying system, comprising a first driving circuit for driving a CRT TV to display video images and a second driving circuit for driving an LED display to display video images, wherein said first driving circuit comprises a digital encoder for processing the output signals of a first timing control circuit and digitized displaying data stored in a display memory unit to thereby generate first video signals for the CRT TV, and said second driving circuit comprises
a digital gamma-correction circuit, coupled to directly receive the digitized displaying data from said display memory unit, for performing a digital gamma-correction process on the digitized displaying data to produce second video signals for the LED display; -
a second timing control circuit, coupled separately with said first timing control circuit and said digital gamma-correction circuit, for converting a plurality of timing signals into an LED timing control signal; and
a PWM and shutdown circuit for supplying power to the LED display and shutting down the LED display when the LED display has been idle for a preset period. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification