JP3392785B2 - Display device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for displaying characters, figures, symbols and the like in dots. 2. Description of the Related Art In recent years, a plurality of light emitting diode lamps have been arranged to form a dot matrix display, and a dot matrix display has been commercialized. Such a display device is disclosed in, for example, JP-A-61-28689. In this display device, a plurality of documents are usually stored in a storage device such as a RAM, and when one document has been displayed, the next document is displayed. [0004] Therefore, in order to repeatedly display a specific document, it is necessary for the user to operate a switch or the like for designating the display document after the display of the document is completed, and to instruct the display of the document again. [0005] As a method for automatically displaying a document repeatedly without manual operation by a user, a field for designating the number of times of display in a format of document data stored in a storage device has been proposed. It is possible to provide. However, in this method, since the format is changed, it is necessary to change not only the program of the display device but also the program of the device for inputting a document to the storage device, which is not preferable. In view of the above, the display device of the present invention determines the number of times a document is repeatedly displayed in response to a specific character, and when the specific character is detected in the document name, specifies the specific character. The display is controlled based on the number of times the document corresponding to the character is repeatedly displayed. An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a block diagram of a display device according to the present invention.
A dot matrix type display having 128 dots (16 × 16 dots, 8 characters) has a driver 2 for driving the display 1. Reference numeral 3 denotes a CPU for controlling each circuit according to a program stored in a program memory 4 composed of a ROM. 5 is a data memory composed of a RAM, 6
Is a code memory composed of a RAM for storing display data created by a document data input device or the like, for example, is configured in a card format, and is detachable from a display device. As shown in FIG. 2, the code memory 6 has a control area and an area in which up to five documents can be stored. The control area includes the number of stored documents, the start address of the area where each document is stored, and each document. Data size (number of bytes)
Is stored. The document area stores a document name area (8 double-byte characters), a line terminator code, data for each line, and a text terminator code. The data for each line is a character code of 8 double-byte characters. And a line terminator code. Reference numeral 7 denotes a font memory including a ROM for storing full-width dot data for the character code. The character code is converted into corresponding font data and supplied to the driver 2. 8 is I /
Document selection switches S1 to S5 are connected to the O port. The document selection switch is a switch for selecting a document to be displayed from the documents 1 to 5. Next, FIG. 3 shows a flowchart of a main part program written in the program memory 4, and the operation will be described based on the flowchart. First, when the display device is powered on, C
The PU 3 reads the number of documents from the code memory 6 and sets the number in the register N, and sets “1” in the register n (S1, S2). Then, the document selection switch S for the document n
n, here, it is determined whether or not the document selection switch S1 is set to ON (S3). Document selection switch S1
Is ON, the CPU 3 reads out the document name of the document 1 from the code memory 6, and displays “time display” and “{yz}”.
It is determined whether or not (yz is a number) is included in the document name (S4-6). If "time display" is included, for example, the character "currently XX hours XX minutes" is displayed regardless of the contents of the document 1 (S17). Of course, the CPU 3
The current time is displayed using the internal clock. This display is continued until the document selection switch S1 of the document 1 is turned off. The document selection switch S
If it is detected that 1 has been turned off, step S13
Then, 1 is added to the register n. If the value of the register n is equal to or smaller than N, the process shifts to step S-3 described above (S14). When the character of {10} is detected in step S6, the CPU 3 sets "1" to "1".
"0" is set in the register M, and 1 is set in the register m (S7, 8). Then, the CPU 3 sequentially reads out the character codes of the document 1 from the code memory 6 and performs display processing. This display process is described in, for example,
It is well known as shown in 112290 and will not be described in further detail here. When the display of the document 1 is completed, 1 is added to the register m, and it is determined whether or not the document selection switch S1 of the document 1 is set to OFF (S11). If the document selection switch S1 remains ON, and if the value of the register m is equal to or smaller than M, the process returns to step S9 to repeat the display process of the document 1 (S12). That is, the document selection switch S1 is set to O
Unless set to FF, the display of document 1 is repeated ten times. When the document selection switch S1 is set to OFF or when the display of the document 1 is repeated ten times, the process proceeds to step S13 described above (S11,
12). In step S6, if {xy} (xy is a number) is not included in the document name, the CPU 3 repeatedly performs display processing of the document 1 until the document selection switch S1 is turned off. When turned off, the process moves to step S13 (S15, 1
6). Steps S13 and S14 are processes for determining whether all the documents (five documents) in the code memory 6 have been displayed. If all the documents have not been displayed, the next document is displayed. The processing is performed so that the processing returns to the display processing of the document 1 when all the documents are displayed. As is apparent from the flowchart of FIG. 3, a normal document is included in the document name.
Although the number of repetitions is controlled by xy}, display processing is continued for "time display" even if {xy} is included until the document selection switch is turned off. This is because the time display needs to be continuously displayed. If all the document selection switches S1 to S5 are OFF, no display processing is performed on all documents. For example, if only the document selection switch S1 is ON, only the document 1 is displayed. become. The display device of the present invention determines the number of times a document is repeatedly displayed according to a specific character, and when a specific character is detected in a document name, the number of times the document corresponding to the specific character is repeatedly displayed. Since the display is controlled based on the display, the number of display repetitions can be set only by changing the program on the display device side.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a display device of the present invention. FIG. 2 is an explanatory diagram of a code memory. FIG. 3 is a flowchart of a main part program written in a program memory of the display device of the present invention. [Description of Signs] 1 Display 2 Driver 3 CPU 4 Program memory 6 Code memory

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G09G 5/00-5/40 G09G 3/20 G09G 3/32

Claims (1)

(57) [Claims] [Claim 1] A display for performing dot matrix display,
Driving means for driving the display, storage means for storing a document name and character data of the document corresponding to the document name, and reading out the character data of the document stored in the storage means; A control unit that supplies the document to the specified character, the control unit determines the number of times the document is repeatedly displayed according to the specific character, and when the specific character is detected in the document name, repeats the document corresponding to the specific character. A display device that performs display control based on the number of times of display.