Circuit arrangement for scanning the character elements of characters at arbitrarily determinable points, in particular for the correction of teletypewriter characters
US4209662A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 1978 |
| Grant date | Jun 24, 1980 |
| Priority date | — |
| Expiry date | Oct 2, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03006
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A circuit arrangement for scanning the character elements of characters, respectively occurring within a prescribed duration, at arbitrarily determinable points, in particular for the correction of teletypewriter characters by means of scanning the individual character elements with the aid of scanning pulses output by an impulse generator, the scanning pulses being fed to a scanning circuit together with the individual character elements, provides that in the impulse generator a pulse-controlled multi-stage register is provided whose output side is connected to its input side by way of an adder circuit. The adder provides that the code words contained in the register can respectively be altered by a prescribed value with every pulse actuation. A memory, in the form of a programmable read only memory, is provided and has its input side connected to the output of the register, or of the adder circuit, and contains stored controlled signals in specified fixed storage locations which can be actuated by the code words of the register, or of the adder circuit. With the actuation of the respective storage locations, beginning after the start of a character has been determined, the contro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.