The Effects of Analog Filtering on the Picture Quality of Component Digital Television Systems

SMPTE Journal ◽  
1981 ◽  
Vol 90 (10) ◽  
pp. 949-955 ◽  
Author(s):  
Glenn A. Reitmeier
Keyword(s):  
Digital Television ◽  
Picture Quality

Picture Quality Judgments in a Digital Television System

1974 ◽  
Vol 16 (2) ◽  
pp. 139-145 ◽  
Author(s):  
Stanley M. Soliday ◽  
James A. Gardner
Keyword(s):  
Response Surface ◽  
Communication Systems ◽  
Digital Communication ◽  
Sampling Frequency ◽  
Digital Television ◽  
Code Length ◽  
Picture Quality ◽  
Television System ◽  
Digital Communication Systems

Digital communication systems distort their signals as a consequence of the digitization process. The distortions are related to the code length and sampling frequency of the system. The present study assessed viewers' responses to these variables by using simulated digital television. To do this, 24 subjects rated the quality of pictures distorted by several combinations of the variables. A response surface generated from the ratings showed that the ratings were affected by both variables, but most profoundly by code length. Interpretation of the surface's contours from the perspective of system costs revealed that costs should be considered solely from the standpoint of code length.

a-Si TFT Technologies for AM-LCDS

1994 ◽  
Vol 345 ◽  
Author(s):  
Nobuki Ibaraki
Keyword(s):  
Implantation Technique ◽  
Picture Quality ◽  
Large Area ◽  
Aperture Ratio ◽  
Large Size ◽  
Ion Doping ◽  
Doping Technique ◽  
Future Technologies ◽  
Improved Characteristics

AbstractA technical trend for a-Si TFTs is their application to large-size, high-pixel density AMLCDs such as XGA, EWS, and HDTV. In order to realize these LCDs, the TFT device characteristics must be improved. Future technologies, which will be necessary to fabricate TFTs with improved characteristics are as follows,(1) Fully self-aligned TFT technology: A SA-TFT structure reduces the feedthrough voltage caused by parasitic capacitance due to gate/source overlap. This results in an improved picture quality and a higher aperture ratio. Fabrication of such a structure would require ion doping technology.(2) Ion doping technology: This non-mass-separated implantation technique has large area doping capability and much higher doping speed compared to conventional ion implantation technique. The major problems with the ion doping technique is the implantation of unwanted species which deteriorate the quality of source/drain and channel regions of TFTs.

Objective Measurement of Compressed Digital Television Picture Quality

SMPTE Journal ◽  
1998 ◽  
Vol 107 (6) ◽  
pp. 348-352 ◽  
Author(s):  
Ichiro Yuyama ◽  
Yukihiro Nishida ◽  
Eisuke Nakasu
Keyword(s):  
Objective Measurement ◽  
Digital Television ◽  
Picture Quality

New Concepts and Picture Quality of a 35mm Curved-Screen Shopping Center Theater

1967 ◽  
Vol 76 (9) ◽  
pp. 909-911 ◽  
Author(s):  
Glenn Berggren ◽  
Kenneth R. Leonard
Keyword(s):  
Shopping Center ◽  
Picture Quality ◽  
New Concepts

Measuring ATM video quality of service using an objective picture quality model

1999 ◽  
Author(s):  
Jiuhuai Lu ◽  
Mainak Chatterjee ◽  
Mayer D. Schwartz ◽  
Mihir K. Ravel ◽  
Wilfried M. Osberger
Keyword(s):  
Quality Of Service ◽  
Video Quality ◽  
Picture Quality ◽  
Quality Model

Prediction of Color Television Picture Quality

1977 ◽  
Vol 21 (5) ◽  
pp. 401-405
Author(s):  
Charles P. Greening
Keyword(s):  
Point Of View ◽  
Picture Quality ◽  
Television System ◽  
Fundamental Limitations ◽  
Home Entertainment ◽  
Physical Measurements ◽  
Image Characteristics ◽  
Machine Interface ◽  
Color Television

The nature of the man/machine interface in the color television system as used for home entertainment is explored and described. The problem of predicting picture quality is examined from the point of view of the receiver designer/manufacturer. The relevance of existing performance data, perference data, and physical measurements of image characteristics to the picture quality question is examined. Existing models and part-models are described, and the characteristics of a more complete, but hypothetical model are outlined. Fundamental limitations in the predictability of picture quality are described. These limitations arise in large part from the fact that many important factors in picture quality, such as quality of the broadcast signal, viewing conditions, and personal preferences are not controllable by the receiver manufacturer.

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