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Device and method for subfield coding

An encoding device and subfield technology, applied in the field of subfield encoding equipment and methods, can solve problems such as reducing display brightness

Inactive Publication Date: 2007-01-10
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this sub-field coding is that it reduces the maximum achievable brightness of the display, because in order to display the highest brightness, the light-emitting elements do not emit light for the maximum possible time in a sub-field.

Method used

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  • Device and method for subfield coding
  • Device and method for subfield coding
  • Device and method for subfield coding

Examples

Experimental program
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Embodiment Construction

[0014] figure 1 Shown is a block diagram of an LED data display device 6 comprising a system controller 1, data distribution means 2, data processing means 3, drive means 4 and a display screen 5 comprising a large number of LEDs arranged in a matrix. The system controller 1 preferably includes a microcontroller 10 for controlling the display device, an address mapping unit 11 for generating addresses for storing video data, and a video data transfer unit 12 for transferring the video data to the data distribution device 2 . In addition, the system controller 1 includes two inputs, one input 13 connected to the microcontroller 10 for sending and receiving control data, and the other input 14 connected to a digital video source (such as a digital video recorder). machine, digital video player, or personal computer) on the video data transfer unit that receives digital video. The system controller 1 is connected to the data distribution device 2 via two buses 15 , 16 . The con...

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PUM

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Abstract

The invention relates to a device for subfield coding a large-screen display. The device comprises means for generating a digital value for a picture element of the display and means for determining a first number and a second number of subfields of a predetermined total number of subfields from the digital value, for which determined subfields the picture element emits radiation. In order to improve the dynamic range while maintaining the maximally obtainable brightness, the device comprises means for determining the first number of subfields from the digital value, the first number of subfields having a different on-period during which the picture element emits radiation, and means for determining the second number of subfields from the digital value, the second number of subfields having a fixed on-period during which the picture element emits radiation.

Description

technical field [0001] The present invention relates to a device for encoding subfields of a large-screen display, the device comprising means for generating a digital value for a pixel of the display and a front for determining the light emission of the pixel in a predetermined total number of subfields according to the digital value The installation of some subfields and some latter subfields. [0002] The invention also relates to a method of encoding subfields for a large-screen display, the method comprising generating a digital value for a pixel of the display and determining from this digital value the first number of luminous pixels in a predetermined total number of subfields subfield and some subsequent subfield steps. [0003] Such subfield-encoded devices are used in large-screen television displays and computer displays that include a large number of light sources arranged in a matrix. Such a display can include a large number of LEDs or a plasma screen. Backg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32G09G3/28H04N5/66G09G1/00G09G3/20G09G3/296G09G3/30
CPCG09G3/2025G09G3/30G09G3/2037G09G3/32G09G3/20
Inventor E·P·芬克
Owner KONINK PHILIPS ELECTRONICS NV
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