DE2025130C3 - Arrangement for displaying characters and pictorial representations on the screen of a cathode ray tubes - Google Patents

Description

ft 1 574723) to display for the in register37

the number of lines a, f to the view die Hinget, with, 3

Control signals over the lines 21 for the counter 20. The counter 20 serves primarily to count characters from the keyboard 23 into the register 22 and continuously to advance the position of the memory to be viewed -sen Hin in the register 22 stored signal is ^g f, m eeeieneten time from the control circuit 24 in ^g the frame buffer 25 via leads. the Sldiicdeiholspeicher 25 consists dargestdlten embodiment of five _circulation? e.chern 26 to m Sri the ümlaufspeichem 26 is up to 30 is "the first instance to UHraschall-Laufzcitspeichcr. SL as for use in Telefonvermntlungen

55 respectively, ^ or Ruckwar ^ti gen sign

15 na s. D.e

Lines 60 mn dem
brazen signals to z%

Äem associated _{and set} registers sLhlpositionsknordi-59 are also available via the

33 _connect , from wel- ^ " _VoreinsU ."

* _{new line}

old. Along with which via the Le.-fl

^^ f "" ξ ^ ρΐΐοη, which are p rtnigpn via d the ^BK J ^le J ⁿⁱ Ä ^p _rtnigpn , e. ⁵ f questioning Sf status of the counter 58 ^ "" ¹ JBf-Analog-Umsctzer 61, 62 over and 59 au ^ e ftgjjj l _nordnu ng is thereby

2-

Sd of the tough! 33 and the counter 20 is in a. Comparison circuit 34 compared u.jd with sighted a mark pulse to the control switch -. ,, n., 24 abaeeeben, whereby a new character m dTn'LaufzSeicher 25 can be written. The characters saved in the runtime memory 25 (Bildw.ederholspei-?) Are sent to the image generator 35 in the image format id Der ^In

^ uf

^{Koaxialuhcl 63 6}

ge. _M procedure for

^^ screen of a cathode ray n α _open i _egun gsschrift 1574 723) composed of ftcraden lines. he

_d ^ displacement einer'schreibstelle, the _{Flag with} by de ^ "ieo S HNET is * g to Mart. ^ _S üind of

is changed in each, ^

Sequence of D.ffe-4 ° Z represented as binary signals s is displayed. One bit of this indicates. if he the brand to pay.

Address, a general koo

or a special character. 1P

Repeat generator 36 output characters is _{directly conditioned}

he circuit arrangement according to the earthing y. _K oordinatenregister (Zahier) 5 "

P. all output of the saved .Pjfferenzkoo £ 5e

^ zTh e.59 takes over and from it dieg

First of all, the time can be changed at constant voltage, and secondly, the reset voltage is changed at constant time depending on the position of the start and destination coordinates. The duration of the reset pulse at constant voltage does not depend linearly on the respective reset path. This method is possible in principle, but is poorly implemented precisely because of the non-linearity); half it is proposed to change the reset voltage constant time, since there is a linear relationship between reset voltage U u < reset path.

1 sheet of drawings

Claims (1)

full utilization of the lines can be the Claim: "Unused memory locations not otherwise ge be used. This will make the existing Arrangement for displaying characters Storage capacity of a display device not fully used. and pictorial representations on the screen 3 uses. On this disadvantage of the known devices a cathode ray tube or the like, in which next will be discussed in more detail later. In a group cinema Display device and a signal source, e.g. B. control system for data display stations can be unstatur or computers, means for implementing the specific requirements of the central facility and digital Signals in the beam movement in front are staggered in time from several cathode ends are, which are used essentially from image repetition io beam display parts. With these Storage. Character generator and digital-to-analog arrangements can, however, be assigned to converters exist, and in which by means of the th texts not on the identical image area, Digital-to-analog converter upstream counter z. B. displayed in the upper part of the data display device (Register) the signals used to deflect the beam. in the sense of a combination of the characters »5 The invention is based on the object of creating a straight line in a vertical, horizontal arrangement with which the electron beam can be generated in an oblique direction, so that it can be controlled in each case, for example . B. at characterized in that the X- (58) end of the text before the end of the line from each or y-coordinate register (59) is followed by a regi-coordinate in a, inter alia, by the ster (1. 2), the when recognizing 20 storage medium predetermined constant time possible z. B. End condition for writing in a borrowed exactly in a target coordinate z. B. At the beginning of the line the position of the X- (58) or the V-Coordi- next line can be steered. The invention adopts natenregisters (59) and from this it is preferably based on an already proposed reset, which is based on the difference in the X arrangement (German Auslegeschrift 1 574 723) or Y coordinate of the target point and the mo- 35 in which the Writing characters according to the stylus corresponds to the writing point and that the process in difference coordinates on the register screen (1, 2) is followed by a digital-analog wall, an emergency television picture tube with an electrical ler (3, 4), via which the beam Deflection system takes place. deflection in the horizontal direction, d. H. According to the invention, this object is thereby achieved Λ 'direction or in the vertical direction, ie in 30, triggers the fact that the X or y coordinate register is influenced in each case in the V direction with the aim of being connected downstream in a register which, when one of the possible coordinates is differentiated for all, is recognized z. B. End condition for writing in a renzen predetermined constant time the beam line takes over the status of the coordinate register to steer to the target point. and from this forms the reset value that the difference 35 rence of the X or y coordinate of the handle and corresponds to the current writing position and that a digital-to-analog converter is connected downstream of the register. via which the beam deflection in The invention relates to an arrangement in the horizontal direction, ie in the A 'direction or in a vertical direction, ie in the ^ direction, for the display of characters and images, with positions on the screen of a cathode ray - the target, in a for all possible coordinate tube. B. keyboard or computer, with-beam to steer to the target point,
tel to convert the digital signals into the beam The advantages achieved by the invention exist movement are present, which is essentially 45 in particular that, since the electron beam from image repetition memory, character generator and from every writing position by control characters Digital-to-analog converters exist, and control the memory in every other Schrcibstelle by means of which the digital-to-analog converters can be connected upstream, in the case of a single data display device, depending on the graded Counters (registers) the signals for deflecting the required number of writing positions for many formats the size of the jet in the sense of a composition that can be reduced in this way to the storage volume, or Characters consisting of straight lines in vertical, horizontal lines - a limited number for group control right and oblique direction can be generated. from writing to many lines of the screen In many use cases for such data can be distributed. This invention has further Viewing devices. e.g. programming, creation of the advantage of a better utilization of the memory tables or in the information service it happens that the 55 capacity of the data display device is enabled. To the that the available line length is not user allowed to change the number of characters per line is filled in completely with characters. With a rigid and thus with a given total number of characters the line-line memory organization, d. H. to determine the constant number of liters on the display device itself. the Number of characters per line, it is known that in this case there is additional effort in a data display device len the memory for the rest of the line with spaces 60 very little. When resetting the write beam on len to be filled out and therefore not to be used to the full. the beginning of the next line from any Assuming an average utilization of the position of the previous line, for example, this results in 50 ° u of the line length is about 50 °, a deviation that is smaller than the line width Memory space is lost. In such devices with the beam and which do not stare at the quality of the image Circulating storage media can be influenced, for example. in alphanumeric line-by-line recording. The invention is illustrated below with reference to the drawing the writing mode and the memory circulation are explained. The figure shows a block diagram in some cases be rigidly coupled, d. H. even if the arrangement is not already proposed (German