The Measurement of Field-Time and Line-Time Waveform Distortions in NTSC TV Facilities
Hans Joachim Schmid · IEEE Transactions on Broadcasting · 1973
The concept of field-time and line-time waveform distortion (LD and LD) permits us to express in numbers the subjective quality of large details in a TV picture. The measuring methods for both FD and LD are presented together with examples of typical TV facilities. Also presented are special measuring methods for facilities that have very small FD and/or LD.