The HDTV Camera - Fighting the Resolution/Noise Battle
|Author(s):||Ulrich H. Reimers|
|Publisher:||Society of Motion Picture and Television Engineers|
|Publication Date:||1 February 1983|
|Conference Location:||San Francisco, CA, USA|
|Conference Date:||4 February 1983|
|Page(s):||32 - 43|
During the development of any component for a future-oriented HOTV system the question arises: to what extent can this type of apparatus be implemented using components currently available on the market, and in which areas is technological progress a prerequisite for a successful future-oriented development. The most vital components in the construction of a colour camera for HDTV systems are - under this aspect - without doubt the camera lens and the pick-up tube. This article describes the resolution performance which can be achieved today using these components. A very important characteristic of the HOTV - as indeed of any other camera - is its sensitivity and its light requirement on location; these parameters are both directly related to the signal-to-noise ratio in the camera signal. The signal-to-noise ratio in a HOTV image and its subjective evaluation by the viewer are two of the numerous parameters in HDTV systems which so far remain largely unresearched. This article will therefore attempt to demonstrate which signal-to-noise ratios are feasible in a HDTV camera at the present time, and to which extent these values can be regarded as satisfactory. Tests of noise visibility in HOTV images, which include practical experiments, support these theses.