High definition television system
Номер патента: CA1178369A
Опубликовано: 20-11-1984
Автор(ы): Michel Favreau
Принадлежит: Thomson CSF SA
Опубликовано: 20-11-1984
Автор(ы): Michel Favreau
Принадлежит: Thomson CSF SA
Реферат: ABSTRACT OF THE DISCLOSURE The present invention relates to a television system using a pickup tube performing an oscillatory scan. On reception the picture restoration device uses a receiving tube which performs a linear restoration, but with a line frequency which is double the scan frequency. In addition, the signal supplied for the pickup tube is processed on reception by two separate processing channels. The two channels respectively supply first and second aignals respectively corresponding to the low part and the high part of the receiving tube input signal spectrum. This input signal is then reconstituted by means of an analog mixer. This leads to a much better definition than that obtained with existing television systems.
Technique for providing compatibility between high- definition and conventional color television
Номер патента: CA1215773A. Автор: Barin G. Haskell. Владелец: Western Electric Co Inc. Дата публикации: 1986-12-23.