Method and apparatus for storage and accessing of characters, and electronic printer employing same
US4555763A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 1982 |
| Grant date | Nov 26, 1985 |
| Priority date | — |
| Expiry date | Jul 1, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2215/0068
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Electronic printer apparatus in which the intensity of the beam of a cathode-ray tube is controlled during successive beam sweeps to display and project onto a rotating electrostatically-charged surface an image of successive slices through a row of characters to be printed, the latent line images thus formed being then converted to a toner image for subsequent transfer to a page of paper. Digital information bits organized in bytes and representing slices through each character are stored in respective areas of a permanent memory storage device. The appropriate slices of the characters are accessed in response to character-representing input signals, and are read out serially to control the beam intensity during each sweep and thus display, along the sweep, the desired slice through the row of characters. The stored bits for each character slice are organized into various integral numbers of x-bit and y-bit bytes, preferably 8-bit and 6-bit bytes, the number of bytes of each type for each character slice depending on the bit width of the corresponding character cell; there are no extra or left-over bits beyond these included in the two types of bytes. The so-stored bytes of differ…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.