The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 22, 1985
Filed:
Mar. 13, 1984
John R Welk, Addison, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A preconverged color display station is disclosed which is compatible with a computer controlled control unit that provides electrical convergence control signals. Compatibility is obtained by causing the control unit to transmit the electrical convergence signals to the screen storage memory RAM (random access memory) which normally stores information defining the character and character attributes to be visually provided by the display station CRT screen. The stored convergence signals are read back to the control unit from the screen RAM. After all of the convergence signals have been received by the display station and prior to the transmission of character and character attribute information signals to the screen RAM, the contents of the screen RAM is erased. Subsequently, the contents of the screen RAM, which now contains character display information signals, is read out and utilized to define a visual display on a CRT. During the time that the screen RAM contains electrical convergence signals, the video of the CRT is blanked. Selection of any of at least three basic colors is provided by the color display station whether or not electrical convergence control signals are provided thereto and whether or not a monochrome or multicolor control unit is coupled thereto.