Automatic writing systems and methods therefor

Details Automatic writing systems and methods therefor Automatic writing systems and methods therefor

G - Physics

06

F

354/229

G06F 7/00 (2006.01) B41J 5/42 (2006.01)

Patent

CA 1052911

ABSTRACT OF THE DISCLOSURE- Automatic writing systems and method therefor are provided in accordance with the teachings of the present invention wherein, according to a preferred embodiment, a central processor and a plurality of peripherals including at least a keyboard, a printer unit, a buffer and a transport station for recording data on a record media are each connected to a common data bus, a common status bus, and a common instruction word bus. Alphanumeric character data, format data, and function data may be entered from the keyboard and the presence of such data is indicated to the central processor on the common status bus. Upon receipt of a data presence condition, program control is initiated by the central processor calculated to achieve the designated function or functions with the alphanumeric or format data presented. The program control of each peripheral by the central processor is carried out on the common instruction word bus while the degree of completion of the co?mand issued to a peripheral is indicated to the central processor on the common status bus. Data is conveyed among the peripherals and the central processor through the common data bus for example, in a record mode, alphanumeric data entered at the keyboard is placed on the common data bus and entered on a per character basis into the central processor. Thereafter such data is again placed on the common data bug and applied on a per character basis to the printer and buffer under program control. When a line of characters has been entered into the buffer, the contents of the buffer are recorded, again under program control, and each character to be recorded is first loaded into the central processor and there- after applied to the transport station for recording purposes. Conversely, in a playback mode, a line of characters is read from the record media and loaded into the buffer. Thereafter, each character loaded is applied to the printer unit, under program control, with the transfer of each character taking place through and under the control of the central processor. This manner of asynchronous operation in data translation between a plurality of peripherals and a central processor enables a multitude of editing, revision, control and manipulation steps to be accomplished in the central processor, under program control, while allowing the overall automatic writing system to be highly flexible in operation and readily expandable. - 2 -

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