1. History and Future of Broadcast Technologies at NHK
Kenji Nagai
General Managing Director
Executive Director-General of Engineering
Japan Broadcasting Corporation
December 7, 2009 1 1

2. Purpose of NHK -The Broadcast Act-
Article 7 (Purpose)
The purpose of NHK is to conduct the domestic broadcasting of, or to entrust the broadcasting of, enriched and high quality broadcast programs for the public welfare in such a manner that the broadcasting may be received all over Japan, to conduct business necessary for the improvement and development of broadcasting and the reception thereof, and to conduct international broadcasting and NHK’s international broadcast programming operations.
Article 9 (Business)
(5) NHK shall make arrangements to ensure that either medium frequency broadcasting or very high frequency broadcasting and television broadcasting can be received all over Japan.
(1) NHK shall conduct the following business for the accomplishment of the purpose mentioned in Article 7:
(iii) To conduct research and investigation necessary for the improvement and development of broadcasting and the reception thereof, 2 2

3. Progress of Broadcast Technology in Japan
Terrestrial Digital Broadcasting
Digital Sound Broadcasting
Satellite Digital Broadcasting
２００６
B-SAT/LMCSS 提供
２００３
HDTV Broadcasting (8 hours/day)
２０００
One-Seg Service
１９９５
１９９１
Experimental Satellite Broadcasting
１９８９
Start of R&D on Super Hi-Vision
１９８６
１９８４
Start of R&D on Satellite Broadcasting
Experimental HDTV Broadcasting (1 hour/day)
１９６９
１９６６
Educational Television Broadcasting
１９６４
Start of R&D on Terrestrial Digital Broadcasting
Television Broadcasting
１９５９
FM Broadcasting
１９５３
Radio Broadcasting
Start of R&D on HDTV
１９３１
１９３０
Radio2
１９２５
Foundation of NHK STRL 3 3

4. R&D on Television System -Past and Future-
TV-lines
3D TV based on Spatial Imaging Technology
1995
2025
Super Hi-Vision (UHDTV)
R&D
Start of Service
4320
1964
2000
Hi-Vision (HDTV)
1080
R&D
Start of Service
1954(NTSC)
625/525
SDTV
1967(PAL)
Baird (UK)
R&D
Takayanagi (Japan)
1920
1960
1980
2000
2020 4 4

5. Super Hi-Vision System
Super Hi-Vision has extremely high spatial resolution, 33 million pixels per frame, and it can provide viewers with stunning images. Various parameters other than spatial resolution is under investigation now.
The wide visual angle of 100 degrees provides viewers with an immersive feeling.
The purpose of Super Hi-Vision to home is to provide a totally new viewing experience to enjoy wide and extremely high resolution images from any viewing distance.
7680
4320
Viewing distance : 0.75 x Picture height
Viewing angle : 100 degrees

6. International Collaboration on Super Hi-Vision
IBC 2008 (Amsterdam)
NAB 2009 (Las Vegas)
Received “Special Award” for the world’s first international transmission of Super Hi-Vision signal
Received “Technology Innovation Award” for development of new media technologies 6 6

7. 3D TV based on Spatial Imaging -Integral Method-
Business interests in Stereoscopic 3D television system are increasing in various industries worldwide. However, discrepancy between the convergence point and the focal point causes visual fatigue.
Spatial imaging system does not cause visual fatigue nor requires special glasses, because an object is reconstructed as a spatial image (light field).
Upper Viewpoint
Right Viewpoint
Left Viewpoint
Lower Viewpoint
Display Device
Object reconstructed as a spatial image
Reconstruction of light
Viewer
Image’s appearance changes as the viewer’s position moves
Integral 3D Imaging System 7 7 7