DE2847389A1 - Screen of VDU with fields subdivided in 7 by 9 matrix - reduces storage needs and has two stores for symbol addresses of rows for interrogation generator - Google Patents

Screen of VDU with fields subdivided in 7 by 9 matrix - reduces storage needs and has two stores for symbol addresses of rows for interrogation generator

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Publication number
DE2847389A1
DE2847389A1 DE19782847389 DE2847389A DE2847389A1 DE 2847389 A1 DE2847389 A1 DE 2847389A1 DE 19782847389 DE19782847389 DE 19782847389 DE 2847389 A DE2847389 A DE 2847389A DE 2847389 A1 DE2847389 A1 DE 2847389A1
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DE
Germany
Prior art keywords
character
addresses
fields
rows
symbol
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19782847389
Other languages
German (de)
Inventor
Manfred Ing Grad Hornung
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Training Center GmbH and Co KG
Original Assignee
Hartmann and Braun AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hartmann and Braun AG filed Critical Hartmann and Braun AG
Priority to DE19782847389 priority Critical patent/DE2847389A1/en
Publication of DE2847389A1 publication Critical patent/DE2847389A1/en
Withdrawn legal-status Critical Current

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Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G1/00Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
    • G09G1/02Storage circuits
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/22Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of characters or indicia using display control signals derived from coded signals representing the characters or indicia, e.g. with a character-code memory
    • G09G5/24Generation of individual character patterns

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

A symbols display system in a visual display unit has the screen divided into separate symbols fields. Each field is subdivided into a seven by nine dot matrix. This reduces the storage capacity required. The address of a symbol is transmitted to two stores, one of which contains the first seven addresses of symbols in the rows for all symbol fields. The second store contains the other rows of all the symbol fields. The two stores are interrogated by symbol addresses and symbol row addresses. The stores are connected in parallel to a symbols generator which supplies the symbols addresses. The row addresses of the symbol control the first store and the second store transmit the rows of all symbols at a common data output.

Description

Die Erfindung betrifft ein Verfahren zur Darstellung vonThe invention relates to a method for displaying

Zeichen mit einem Datensichtgerät, dessen Bildschirm in einzelne Zeichenfelder unterteilt ist, von denen jedes vorzugsweise 7 x 9 matrixförmig angeordnete Bildpunkte enthält.Characters with a data display device, whose screen is divided into individual character fields is subdivided, each of which is preferably 7 x 9 pixels arranged in the form of a matrix contains.

Bei der Darstellung von Symbolen und Zeichen ist es zur Reduzierung des Speicherbedarfs bekannt, (z.B. DT-OS 24 12 885) den Bildschirm in Zeichenfelder zu unterteilen, von denen jedes einzeln adressierbar ist. Jedes dieser Zeichenfelder enthält wiederum eine Vielzahl von Bildpunkten, die ihrerseits zu Zeilen und Spalten zusammengefaßt sind. Ublicherweise besteht ein derartiges Zeichenfeld aus sieben Spalten und neun Zeilen, so daß sich ein 7 x 9-Bildpunktmatrix ergibt.When displaying symbols and signs, it is used to reduce the memory requirement is known (e.g. DT-OS 24 12 885) the screen in character fields to subdivide, each of which is individually addressable. Each of these character fields in turn contains a large number of pixels, which in turn form rows and columns are summarized. Such a character field usually consists of seven Columns and nine rows, so that there is a 7 x 9 pixel matrix.

Bei 7 x 9-Zeichenfeldern ist zur Speicherung der einzelnen Zeichenzeilen ein Speicher mit einer Kapazität von 16 x 7 Bit erforderlich, von dessen 16 Speicherplätzen allerdings nur 9 ausgenutzt werden. Ist zur Adressierung des Zeichengenerators ein 8-Bit Bildwiederholungsspeicher eingesetzt, so sind im Zeichengenerator 256 x 16 = 4096 Worte zum Betrieb der Anlage erforderlich.In the case of 7 x 9 character fields, the individual character lines are stored a memory with a capacity of 16 x 7 bits is required, of which 16 memory locations however, only 9 are exploited. Is on for addressing the character generator 8-bit image repetition memory is used, the character generator has 256 x 16 = 4096 words required to operate the system.

Der vorliegenden Erfindung lag die Aufgabe zugrunde, insbesondere für Datensichtanlagen mit einem 7 x 9-Bildpunktraster ein einfaches Verfahren zur Reduzierung der erforderlichen Speicherkapazität zu schaffen.The present invention was based on the object, in particular for data display systems with a 7 x 9 pixel grid a simple method for Reduction of the required storage capacity to create.

Erfindungsgemäß ist diese Aufgabe dadurch gelöst, daß eine Zeichenadresse zwei Speichern zugeführt wird, daß in dem ersten Speicher die Zeilen 0 ... 7 aller Zeichenfelder abgelegt sind, daß der zweite Speicher die weiteren Zeilen aller Zeichenfelder beinhaltet und daß beide Speicher durch Zeichenadressen und Zeichenzeilenadressen abgefragt werden.According to the invention, this object is achieved in that a character address two memories is supplied that in the first memory the lines 0 ... 7 of all Character fields are stored that the second memory the other lines of all character fields and that both memories by character addresses and character line addresses be queried.

Das Verfahren ist nachfolgend anhand eines in Fig. 1 und Fig. 2 der Zeichnung dargestellten Ausführungsbeispiels näher erläutert.The method is shown below with reference to one of FIGS. 1 and 2 of FIG Drawing illustrated embodiment explained in more detail.

Es zeigen: Fig. 1 zwei Zeichenfelder, Fig. 2 ein Blockschaltbild.They show: FIG. 1 two character fields, FIG. 2 a block diagram.

In Fig. 1 sind mit ZA Zeichenadressen, mit ZZA Zeichenzeilenadressen und mit ZF 7 x 9-Zeichenfelder bezeichnet. Jedes Zeichenfeld ZF besteht aus neun Zeilen, von denen jede sieben Bildpunkte BP umfaßt. Soll beispielsweise das obere Zeichenfeld ZF mit der Zeichenadresse ZA = 0 auf einen Bildschirm dargestellt werden, so gelangt ein entsprechender Befehl ZA an zwei in Fig. 2 mit Sl und S2 bezeichnete Speicher. Im Speicher S1 sind auf 256 Speicherplätzen jeweils acht Codewörter gespeichert, die durch den Befehl ZZA (2 ... 22) ausgegeben werden. Der Speicher S1 muß daher über eine Kapazität von 256 x 8 = 2048 Worten bzw. 2 K-Worte verfügen. Mit Hilfe des Speichers S1 werden also die Zeilen ... 7 des Zeichenfeldes ZF dargestellt.In Fig. 1, ZA indicates character addresses, ZZA indicates character line addresses and labeled ZF 7 x 9 character fields. Each character field ZF consists of nine Lines each of which comprises seven pixels BP. For example, should the upper Character field ZF with the character address ZA = 0 can be displayed on a screen, so a corresponding command ZA arrives at two designated in FIG. 2 with S1 and S2 Storage. Eight code words are stored in 256 memory locations in memory S1, which are output by the command ZZA (2 ... 22). The memory S1 must therefore have a capacity of 256 x 8 = 2048 words or 2 K words. With help of In memory S1, the lines ... 7 of the character field ZF are displayed.

Neben dem Speicher S1 wird durch die Zeichenadresse ZA ein zweiter Speicher S2 adressiert, in dem auf 256 Speicherplätzen jeweils die neunte Zeile des adressierten Zeichenfeldes ZF gespeichert ist. Die Kapazität des Speichers S2 umfaßt daher 256 x 1 = 256 Worte bzw. 1/4 K-Worte.In addition to the memory S1, a second one is created by the character address ZA Addressed memory S2, in which the ninth line in each case on 256 memory locations of the addressed character field ZF is stored. The capacity of the memory S2 therefore comprises 256 x 1 = 256 words or 1/4 K words.

Beide Speicher S1, S2 zusammen haben also eine Kapazität von 2304 Worten bzw. 2 1/4 K-Worten. Im Vergleich zu bekannten Verfahren, bei denen noch 4096 Speicherplätze erforderlich waren, wird bei dem beschriebenen Verfahren der Speicherbedarf nahezu auf die Hälfte reduziert, was zu einer erheblichen Kosteneinsparung führt.Both memories S1, S2 together therefore have a capacity of 2304 Words or 2 1/4 K words. Compared to known methods where still 4096 memory locations were required, the Storage requirements reduced by almost half, resulting in significant cost savings leads.

Da bei der Ausübung des Verfahrens kein zusätzlicher Steuerungsaufwand entsteht, ist es ohne weiteres in allen bestehenden Datensichtanlagen anwendbar. Das beschriebene Verfahren bietet die gleichen Vorteile, wenn die darzustellenden Zeichen über mehr als neun Zeilen verfügen.Since there is no additional control effort when performing the procedure arises, it can easily be used in all existing data display systems. The method described offers the same advantages if the one to be represented Characters have more than nine lines.

Claims (2)

Verfahren zur Dastellung von Zeichen mit einem Datensichtgerät Ansprüche: Verfahren zur Darstellung von Zeichen mit einem Datensichtgerät, dessen Bildschirm in einzelne Zeichenfelder unterteilt ist, von denen jedes vorzugsweise 7 x 9 matrixformig angeordnete Bildpunkte enthält, dadurch gekennzeichnet, daß eine Zeichenadresse zwei Speichern zugeführt wird, daß in dem ersten Speicher die Zeilen 0 ... 7 aller Zeichenfelder abgelegt sind, daß der zweite Speicher die weiteren Zeilen aller Zeichenfelder beinhaltet und daß beide Speicher durch Zeichenadressen und Zeichenzeilenadressen abgefragt werden.Method for displaying characters with a data display device Claims: Method for displaying characters with a data display device whose screen is divided into individual character fields, each of which is preferably 7 x 9 matrix-shaped contains arranged pixels, characterized in that a character address two memories is supplied that in the first memory the lines 0 ... 7 of all Character fields are stored that the second memory the other lines of all character fields and that both memories by character addresses and character line addresses be queried. 2. Schaltungsanordnung zur Ausübung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß zwei Speicher (S1, S2) parallelzu einem Zeichengenerator zusammengeschaltet sind, daß den Speichern (S1, S2) Zeichenadressen (ZA) zugeführt sind, daß Zeichenzeilenadressen (ZZA) der Zeilen 0 ... 7 den ersten Speicher (S1) ansteuern und daß der zweite Speicher (S2) die weiteren Zeilen aller Zeichen an einen gemeinsamen Datenausgang abgibt.2. Circuit arrangement for performing the method according to claim 1, characterized in that two memories (S1, S2) are parallel to a character generator are interconnected that the memories (S1, S2) character addresses (ZA) supplied are that character line addresses (ZZA) of lines 0 ... 7 the first memory (S1) control and that the second memory (S2) the other lines of all characters provides a common data output.
DE19782847389 1978-11-02 1978-11-02 Screen of VDU with fields subdivided in 7 by 9 matrix - reduces storage needs and has two stores for symbol addresses of rows for interrogation generator Withdrawn DE2847389A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782847389 DE2847389A1 (en) 1978-11-02 1978-11-02 Screen of VDU with fields subdivided in 7 by 9 matrix - reduces storage needs and has two stores for symbol addresses of rows for interrogation generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782847389 DE2847389A1 (en) 1978-11-02 1978-11-02 Screen of VDU with fields subdivided in 7 by 9 matrix - reduces storage needs and has two stores for symbol addresses of rows for interrogation generator

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DE2847389A1 true DE2847389A1 (en) 1980-05-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056081A1 (en) * 1980-12-23 1982-07-21 Siemens Aktiengesellschaft Method and device for reducing the required memory of sequences of binary signals describing characters or graphical patterns in character generators

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056081A1 (en) * 1980-12-23 1982-07-21 Siemens Aktiengesellschaft Method and device for reducing the required memory of sequences of binary signals describing characters or graphical patterns in character generators

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