20-07-2012, 09:51 AM
LCOS - the Technology for High Performance HDTV
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Advent Of The Era Of HDTV
Since 2000, to improve the image quality of TV broadcasting, the broadcasting started to transform the signal from conventional analog signal into digital signal. This reform of signal technology has been developed as a global-wide project today.
In 2004 the United States has conducted such technological
changing. In 2006 FCC has transformed the National television Broadcast signals into HDTV digital signal, and will fully stop to broadcast the analog signals in 2009.
Hdtv technology
High-definition television (or HDTV) refers to video having resolution substantially higher than traditional television systems (standard-definition TV, or SDTV, or SD). HDTV has one or two million pixels per frame, roughly five times that of SD.
It is a way of broadcasting the signals digitally
Includes clearer pictures, superior sound quality, progressive scanning and a wider viewing screen. For people looking to set up the ultimate home theater system, a widescreen television set is the number one choice.
A brief idea about lcd & DLP
LCD uses liquid crystals, one for each pixel, on glass panels. Light passes through these LCD panels on the way to the lens and is modulated by the liquid crystals as it passes. Thus it is a "transmissive" technology.
On the other hand, DLP (DIGITAL LIGHT PROCESSING) uses tiny mirrors, one for each pixel, to reflect light. DLP modulates the image by tilting the mirrors either into or away from the lens path. It is therefore a "reflective" technology.
Layered approach
A liquid crystal on silicon (LCOS) display utilizes a silicon chip as a substrate and utilizes a standard CMOS process to form pixel cell matrices, integrated drivers, and other electronic devices on the silicon chip.
The LCOS display is thus an array of pixels, including hundreds or thousands of individual pixels. LCOS displays use polarized lenses to control the transmission of light, known as light modulation, to individual pixels within the pixel array.
The electrodes embedded in the glass or plastic layers allow an electric field to be applied across the liquid crystal material. The liquid crystal thus acts as a dynamic polarizing medium.
[attachment=28122]
Advent Of The Era Of HDTV
Since 2000, to improve the image quality of TV broadcasting, the broadcasting started to transform the signal from conventional analog signal into digital signal. This reform of signal technology has been developed as a global-wide project today.
In 2004 the United States has conducted such technological
changing. In 2006 FCC has transformed the National television Broadcast signals into HDTV digital signal, and will fully stop to broadcast the analog signals in 2009.
Hdtv technology
High-definition television (or HDTV) refers to video having resolution substantially higher than traditional television systems (standard-definition TV, or SDTV, or SD). HDTV has one or two million pixels per frame, roughly five times that of SD.
It is a way of broadcasting the signals digitally
Includes clearer pictures, superior sound quality, progressive scanning and a wider viewing screen. For people looking to set up the ultimate home theater system, a widescreen television set is the number one choice.
A brief idea about lcd & DLP
LCD uses liquid crystals, one for each pixel, on glass panels. Light passes through these LCD panels on the way to the lens and is modulated by the liquid crystals as it passes. Thus it is a "transmissive" technology.
On the other hand, DLP (DIGITAL LIGHT PROCESSING) uses tiny mirrors, one for each pixel, to reflect light. DLP modulates the image by tilting the mirrors either into or away from the lens path. It is therefore a "reflective" technology.
Layered approach
A liquid crystal on silicon (LCOS) display utilizes a silicon chip as a substrate and utilizes a standard CMOS process to form pixel cell matrices, integrated drivers, and other electronic devices on the silicon chip.
The LCOS display is thus an array of pixels, including hundreds or thousands of individual pixels. LCOS displays use polarized lenses to control the transmission of light, known as light modulation, to individual pixels within the pixel array.
The electrodes embedded in the glass or plastic layers allow an electric field to be applied across the liquid crystal material. The liquid crystal thus acts as a dynamic polarizing medium.