US 3,939,458 A · Method for the tabulator-like illustration of symbols

Abstract

A method and apparatus for effecting the display of symbols, in tabulated form, on the screen of a data-video device, utilizing a data source, an image repetition store and a symbol generator, in which data is fed by the data source identifying the area of the screen in which a tabulator mark is to be depicted, with the symbol generator releasing signals operative to effect the desired display of the tabulator mark. Control may be effected by means of control words from the data source for "tabulator set", "tabulator cancel", and "tabulator advance", as well as for cancellation of tabulator marks of a line, or cancellation of all symbols with the exception of tabulator marks. A writing mark may be employed in connection with the designation and display of a tabulator mark, and the tabulator marks may be disposed in areas with or without the display of symbols therewith. The invention is particularly adapted to applications involving the so-called "rolling-page method" of display.

Claims13

Dependent claims

I. inserting a writing mark word from the data source in the image repetition store and displaying a writing mark corresponding to the writing mark word upon the picture screen,
Ii. inserting an order word tabulator set from the data source in the form of a tabulator word, into that cell of the image repetition store in which the previously inserted writing mark word was stored,
Iii. continuously supplying data from the picture repetition store to the symbol generator whereby the latter provides symbols and a tabulator mark corresponding to the tabulator word, to the picture screen for display thereon,
Iv. feeding an order word tabulator advance from the data source, and with utilization of a decoded ascertaining the location in the image repetition store of the next tabulator mark, and thereafter displaying a writing mark in the corresponding column so ascertained.

1 more element

In a circuit arrangement for selectively depicting symbols in tabulated arrangement upon the picture screen of a data-video device, utilizing tabulator marks visually displayed on such picture screen, the combination of a data source, a continuously operating image repetition store, a symbol generator, means in the data source for storing data by means of which designation may be effected of an area of the screen in which a tubular mark is to be displayed, a register in which is received data from the data source and from which data may be supplied to the image repetition store, counting means operatively connected to said image repetition store for counting lines and columns of the picture screen, representing the addresses of the storage point of the image repetition store, further counting means in which the counting results are adjustable, and means for effecting a comparison between the counting results of said first mentioned counting means and said adjustable counting means, operative over a gate, upon the existence of coinciding counting results to release an address signal for effecting entry of the corresponding tabulator word into the image repetition store, from which display of the tabulator mark may be effected.

A method for the display of symbols, in tabulated form, on the screen of a data-video device whereby symbol words, corresponding to the symbols, are released by a data source, and display of the symbols effected by utilization of an image repetition store and a symbol generator, in which the symbols are shifted upwardly, line-by-line, in accordance with the rolling-page method, with new symbols being written into the last line of the picture screen, comprising the steps of:

I. inserting a writing mark word, from the data source, in the image repetition store and displaying a writing mark corresponding to the writing mark word upon the picture screen,
Ii. inserting an order word tabulator set from the data source, in the form of a tabulator word, into that cell of the image repetition store in which the previously inserted writing mark word was stored,
Iii. continuously supplying data from the picture repetition store to the symbol generator, whereby the latter provides symbols, and a tabulator mark corresponding to the tabulator word, displaying such tabulator mark in the last line as well as in the first line of the picture screen,
Iv. storing, shortly before the transfer of the symbols into the next higher line, the then existing tabulator values into those locations corresponding to the then second line,
V. displaying all symbols of the second through the last line in the respective next line thereabove,
Vi. feeding an order word tabulator advance from the data source, and with utilization of a decoder, ascertaining the location, in the image repetition store of the next tabulator mark, and thereafter displaying a writing mark in the corresponding column so ascertained.

3 more elements

Dependencies are inferred from the claim text.

Method for the tabulator-like illustration of symbols

Life of this patent

Method for the tabulator-like illustration of symbols

Life of this patent

Abstract

Claims13