IEICE TRANSACTIONS on transactions
Analog Bandwidth Compression of HDTV Signals--TAT--
Summary :
The TAT system is an efficient analog bandwidth compression scheme for the HDTV. It compresses the bandwidth by reducing the pixels selectively from the non-detailed portions of the picture. The bandwidth can be reduced to half or less, while keeping high resolution in the detailed portions. In this paper, the basic concept, key techniques and some recent results of the TAT system are presented. First, it must be emphasized that the TAT system is a hybrid system of fixed subsampling and variable subsampling. The basic pixels obtained by the fixed subsampling transmit the basic structure of the picture. The additional pixels obtained by the variable subsampling transmit the details of the picture necessary for the HDTV. The concept of complementary subsampling is proposed and a restoration scheme of the removed high frequency component of the subsampled pixels is derived. Applying the concept to the TAT system, simultaneous transmission of an HDTV picture and an aliasing-free subsampled picture compatible with the current TV becomes possible. An efficient mode decision algorithm which determines the location of the additional pixels is developed. Time-varying fluctuation and partial degradation of resolution were observed in pictures having rich details. They are suppressed by introducing the control of mode transition and the interframe interpolation mode into the mode decision.
- Publication
- IEICE TRANSACTIONS on transactions Vol.E73-E No.5 pp.621-629
- Publication Date
- 1990/05/25
- Publicized
- Online ISSN
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- Type of Manuscript
- Special Section INVITED PAPER (Special Issue on Information Theory and Its Applications)
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Masayuki TANIMOTO, "Analog Bandwidth Compression of HDTV Signals--TAT--" in IEICE TRANSACTIONS on transactions,
vol. E73-E, no. 5, pp. 621-629, May 1990, doi: .
Abstract: The TAT system is an efficient analog bandwidth compression scheme for the HDTV. It compresses the bandwidth by reducing the pixels selectively from the non-detailed portions of the picture. The bandwidth can be reduced to half or less, while keeping high resolution in the detailed portions. In this paper, the basic concept, key techniques and some recent results of the TAT system are presented. First, it must be emphasized that the TAT system is a hybrid system of fixed subsampling and variable subsampling. The basic pixels obtained by the fixed subsampling transmit the basic structure of the picture. The additional pixels obtained by the variable subsampling transmit the details of the picture necessary for the HDTV. The concept of complementary subsampling is proposed and a restoration scheme of the removed high frequency component of the subsampled pixels is derived. Applying the concept to the TAT system, simultaneous transmission of an HDTV picture and an aliasing-free subsampled picture compatible with the current TV becomes possible. An efficient mode decision algorithm which determines the location of the additional pixels is developed. Time-varying fluctuation and partial degradation of resolution were observed in pictures having rich details. They are suppressed by introducing the control of mode transition and the interframe interpolation mode into the mode decision.
URL: https://global.ieice.org/en_transactions/transactions/10.1587/e73-e_5_621/_p
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@ARTICLE{e73-e_5_621,
author={Masayuki TANIMOTO, },
journal={IEICE TRANSACTIONS on transactions},
title={Analog Bandwidth Compression of HDTV Signals--TAT--},
year={1990},
volume={E73-E},
number={5},
pages={621-629},
abstract={The TAT system is an efficient analog bandwidth compression scheme for the HDTV. It compresses the bandwidth by reducing the pixels selectively from the non-detailed portions of the picture. The bandwidth can be reduced to half or less, while keeping high resolution in the detailed portions. In this paper, the basic concept, key techniques and some recent results of the TAT system are presented. First, it must be emphasized that the TAT system is a hybrid system of fixed subsampling and variable subsampling. The basic pixels obtained by the fixed subsampling transmit the basic structure of the picture. The additional pixels obtained by the variable subsampling transmit the details of the picture necessary for the HDTV. The concept of complementary subsampling is proposed and a restoration scheme of the removed high frequency component of the subsampled pixels is derived. Applying the concept to the TAT system, simultaneous transmission of an HDTV picture and an aliasing-free subsampled picture compatible with the current TV becomes possible. An efficient mode decision algorithm which determines the location of the additional pixels is developed. Time-varying fluctuation and partial degradation of resolution were observed in pictures having rich details. They are suppressed by introducing the control of mode transition and the interframe interpolation mode into the mode decision.},
keywords={},
doi={},
ISSN={},
month={May},}
Copy
TY - JOUR
TI - Analog Bandwidth Compression of HDTV Signals--TAT--
T2 - IEICE TRANSACTIONS on transactions
SP - 621
EP - 629
AU - Masayuki TANIMOTO
PY - 1990
DO -
JO - IEICE TRANSACTIONS on transactions
SN -
VL - E73-E
IS - 5
JA - IEICE TRANSACTIONS on transactions
Y1 - May 1990
AB - The TAT system is an efficient analog bandwidth compression scheme for the HDTV. It compresses the bandwidth by reducing the pixels selectively from the non-detailed portions of the picture. The bandwidth can be reduced to half or less, while keeping high resolution in the detailed portions. In this paper, the basic concept, key techniques and some recent results of the TAT system are presented. First, it must be emphasized that the TAT system is a hybrid system of fixed subsampling and variable subsampling. The basic pixels obtained by the fixed subsampling transmit the basic structure of the picture. The additional pixels obtained by the variable subsampling transmit the details of the picture necessary for the HDTV. The concept of complementary subsampling is proposed and a restoration scheme of the removed high frequency component of the subsampled pixels is derived. Applying the concept to the TAT system, simultaneous transmission of an HDTV picture and an aliasing-free subsampled picture compatible with the current TV becomes possible. An efficient mode decision algorithm which determines the location of the additional pixels is developed. Time-varying fluctuation and partial degradation of resolution were observed in pictures having rich details. They are suppressed by introducing the control of mode transition and the interframe interpolation mode into the mode decision.
ER -
English
