|4389637||Digital to analog converter|
A digital to analog converter utilizes a digital missing pulse detector as a time interval measuring means in which the detector includes a programmable counter, the count of which is set to correspond with the digital number or word to be converted. Cloc...
|4321623||Auxiliary television signal system|
Auxiliary signals suitable for conveying additional audio signals for stereophonic television broadcasts, bilingual sound, and the like, are transmitted in the form of modulated bursts of such auxiliary signal placed on the front porch of the composite vi...
|4238769||Vertical synchronization circuit for television receivers|
An improved vertical synchronization system for a television receiver provides both good noise immunity and improved interlace. This is achieved by employing two parallel vertical synchronization circuits between the synchronizing signal input of the vert...