Resources Contact Us Home
Process of analysis of the convergence of a cathode-ray tube with three ganged guns and a device forming a pick-up allowing implementation of this process

Image Number 2 for United States Patent #4364079.

A process of analysis of convergence along two orthogonal components of the three guns in a color television tube with ganged guns involves, for example, placing an analysis slit 20 in front of the screen of the cathode-ray tube in order to observe at least three luminophore columns 15 of different colors in full width, of causing a luminous line of a single color to pass by, turning on only the corresponding gun in front of said slit, and of measuring the current in the deviator of the cathode-ray tube for which the maximum light intensity is observed through the slit, and of beginning these operations again for each of the three colors, the measured values making it possible to deduce the convergence gaps of the beams at the placement of the slit. The invention allows automatic convergence correction of the cathode-ray tube.

  Recently Added Patents
Systems and methods for implementing multi-application tabs and tab sets
Inter-carrier communications for multimedia-message delivery
Door-activated entry light fixture
Keyswitch controller
Methods of establishing virtual circuits and of providing a virtual private network service through a shared network, and provider edge device for such network
Flavonoid dimers and methods of making and using such
Reovirus for the treatment of cellular proliferative disorders
  Randomly Featured Patents
Method for manufacturing a light emitting device
Low fat spread
Method for calibrating at least two video cameras relatively to each other for stereoscopic filming and device therefor
Printing and packaging system and identifying an item of printed matter
Sagnac-type fiber-optic gyroscope with auxiliary fiber coil
Multiple bladder flood control system
Cable management system
Production of maleic anhydride and catalysts therefor
Photocatalyst-induced reduction of semivolatile organic chemicals absorbed in solid materials
Shield structure for electronic circuit parts