Method and apparatus for generating moving objects on a video display screen
US4112422A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1976 |
| Grant date | Sep 5, 1978 |
| Priority date | — |
| Expiry date | Dec 13, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63F2300/203
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A method and apparatus for generating moving objects for a video game display. Common apparatus including a microprocessor with RAM provides vertical motion for all objects and separate horizontal position counting hardware horizontal motion for each object. The microprocessor operating on a horizontal line pair basis drives a parallel to serial converter which stores one eight bit line portion of the object to be displayed which in turn is connected to a shift register. When the converted data is read out to the video display by action of the appropriate horizontal position hardware, it is recirculated to provide a repeat on the next horizontal line of the identical data. An effective one line moving resolution is obtained by utilizing another shift register for a one line delay by means of a switch which is set by a latch driven by the microprocessor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.