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Discussion Starter · #1 ·
Just received this in the mail, thought you might be interested.


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Ultra-high-definition, wide-screen system with 4000 scanning lines

For future broadcasts conveying a strong sensation of reality


This ultra-high-definition image system will be part of a future medium that

will convey a heightened sensation of reality to a viewer. The screen itself

will have a level of definition equivalent to that of gravure printing. The

experimental camera and display system, the first of its kind, has four

times the scanning lines of the ordinary Hi-Vision (HDTV) system (approx.

4,000 lines). We are using it to obtain fundamental data for the future

broadcasting system.


Features:

- The system uses a CCD imaging device and an LC (liquid crystal) panel

display device, both of which have 8 million pixels. They use a four-panel

color system in which two devices generate the color green.

- The video format has four times the scanning lines of standard HDTV, and

is intended for progressive scanning. The effective use of HDTV technology

has reduced the burden of hardware development. For example, the prototype

uses the HD-SDI (Serial Digital Interface) scheme for inter-apparatus

transmissions.

- Combining the large, ultra-high-definition screen with a 3-D multi-speaker

audio system further enhances the sensation of reality.


Specifications for the prototype system

Imaging system

- Imaging device : four 8-million pixel CCDs (R, G1, G2, B: G1, G2

diagonally pixel offset)

- Frame frequency : 60-Hz progressive scanning

- Lens : 2.5-inch monofocal lens, f = 50mm, F =1.4

Display system

- Imaging device : four 8-million pixel LC panels (R, G1, G2, B: G1, G2

diagonally pixel offset)

- Display size: 4 m x 7 m (diagonal approx. 320-inch)

- Display scheme : Front projection type, optical output approx. 5000 lm

Other

- Transmission signal : HD SDI signal 16 systems

- Audio system : 3-D audio with 21 loudspeakers (including 2 bass

speakers)

- Framememory : Approx. 30-second video image recording capability

- Convergence adjustment device : RB geometric distortion corrections


Copyright 2002 NHK (Japan Broadcasting Corporation) All rights reserved
 
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