A Hierarchical HDTV Coding System Using A DPCM-PCM Approach

T. C. Chen; Kou-Hu Tzou; P. E. Fleischer

doi:10.1117/12.969029

25 October 1988 A Hierarchical HDTV Coding System Using A DPCM-PCM Approach

T. C. Chen, Kou-Hu Tzou, P. E. Fleischer

Proceedings Volume 1001, Visual Communications and Image Processing '88: Third in a Series; (1988) https://doi.org/10.1117/12.969029
Event: Visual Communications and Image Processing III, 1988, Cambridge, MA, United States

Abstract

A compatible high-definition television (HDTV) coding system is described in this paper. This scheme allows the HDTV signal to be transmitted at a channel rate of 135 Mbps while an extended-quality television (EQTV) signal is encoded into a 45 Mbps subchannel. Three major coding strategies are used to achieve this goal: first, a hierarchical one stage pyramid coding structure is adopted to separate the HDTV signal into two paths; second, a DPCM scheme with run-length coding and a novel modified quantization scheme is used to compress the first path into a 45 Mbps stream for EQTV; and third, a simple PCM scheme is used to compress the second residual path into a 90 Mbps stream. At the receiver, the first path alone is used to reconstruct the EQTV signal, or the two paths are combined to generate the HDTV signal. This scheme has the advantages of relatively low hardware complexity since the minimum number of channels are used (for a complementary approach) and, since it is implementable with concurrent processing, no scan conversion buffers are required. Also, the proposed pyramid structure incorporates a feedback loop for the coding of the complementary high-definition residual signal. The system design details are investigated and computer simulation results are presented. Both the HDTV and EQTV reconstructed picture quality were found to be very good.

Citation Download Citation

T. C. Chen, Kou-Hu Tzou, and P. E. Fleischer "A Hierarchical HDTV Coding System Using A DPCM-PCM Approach", Proc. SPIE 1001, Visual Communications and Image Processing '88: Third in a Series, (25 October 1988); https://doi.org/10.1117/12.969029

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available