JPS603697A - Scroll type display - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a scroll type display device, and is capable of reliably identifying whether there is undisplayed information.

2. Description of the Related Art Multi-digit displays such as one-line liquid crystal one-light emitting diode and fluorescent display tubes are widely used as data displays for electronic devices using microprocessors.

Incidentally, in electronic devices using such multi-digit displays, not only numerical data but also messages to the operator are often displayed. However, there is a limit to the number of character digits that can be displayed on a multi-digit display, and when displaying data or messages that exceed the number of digits on the display, it is necessary to divide the display into multiple digits or use operator operations. A so-called scroll display in which the display portion is moved is performed.

When performing such a scroll display, it is desirable that the operator can always identify whether the currently displayed display information is all the information that should be displayed or whether there is undisplayed information that should be displayed. Therefore, for example, separate displays are provided at both ends of the multi-digit display, and when there is undisplayed information, the display in the corresponding scroll direction is driven to light up.

However, according to such a conventional configuration, since the information is displayed separately from the display information of the multi-digit display, there is a risk that the information may be overlooked.

The present invention solves these conventional drawbacks, and in a scroll type display device configured to display displayed information by scrolling it sequentially, the present invention provides a scroll type display device configured to display displayed information by scrolling it sequentially. If there is display information, a symbol indicating a scrolling direction for displaying undisplayed information is displayed as part of the display information at the end of the display information that is currently being displayed. .

Hereinafter, a detailed explanation will be given using the drawings.

FIG. 1 is an explanatory diagram of the entire structure of an embodiment of the present invention, in which 1 is a display RAM, 2 is a display top pointer, 3 is a multi-digit display, and 4 is a scroll key.

The display RAM l has an m-digit data area. On the other hand, the multi-digit display 3 has a one-digit display area, and has a display RAM designated by the display head pointer 2.
One-digit data can be displayed from any arbitrary digit of l. The display head pointer 2 can be moved in any direction by operating the scroll keys 4. By sequentially moving the l1 display head pointer 2, m-digit display information stored in the display RAM l can be scrolled and displayed on the multi-digit display 3. And when I stand on these scroll displays,
If there is continuous undisplayed information in the currently displayed display information, a symbol indicating the scroll direction for displaying the undisplayed information is displayed as part of the displayed information at the end of the currently displayed display information. . In this embodiment, symbols indicating the scrolling direction are displayed at the first digit and the nth digit at both ends of the multi-digit display 3. Such switching between data display and scroll symbol display can be realized by using a known digital display drive circuit.

FIG. 2 is a configuration explanatory diagram showing an example of a display element constituting the multi-digit display 3, which is composed of 14 segments.

FIG. 3 is a detailed explanatory diagram of the present invention, using a multi-digit display in which 12 display elements (n=12) as shown in FIG. "K"M"g f'L
7'Cfi, y ff @115Iゝ1. (,) is an example of displaying a 12-digit □ message 'M/3507 READY'. In this case, no symbol indicating the scroll direction appears at either end of the display information being displayed, and the display information being displayed is the entire display information to be displayed.

(b) to (d) ld, % A An example of scrolling and displaying 26 English characters from # to 'z'' is shown. In the case of (b), 1A' is displayed on the left end, indicating that there is no display information to be displayed before 'A'', but 1j is displayed on the right end, indicating the scroll direction.
ThN" is displayed blinking, and the writing "r" after ' is displayed in 1.
51/ indicates that there is undisplayed information following the displayed information currently being displayed. In the case of (C), the symbol 1 that indicates the scroll direction is blinking on the left edge, indicating that there is undisplayed information that should be displayed before 'H'', and the scroll direction is also displayed on the right edge. The displayed symbol 11' is blinking, indicating that there is undisplayed information to be displayed after 1Q#. In the case of (d), the symbol whisper Δ〃 indicating the scrolling direction is blinking on the left end, indicating that there is undisplayed information that should be displayed before 1P', but the right end is '
2" is displayed, indicating that there is no undisplayed information after that.

According to such a configuration, if there is undisplayed information that is continuous with the currently displayed display information, a symbol indicating the scrolling direction for displaying the undisplayed information is displayed at the end of the currently displayed display information. Since these symbols can be displayed as part of the information, the operator will not overlook these symbols and can reliably read them by scrolling the entire displayed information.

Note that the symbol indicating the scroll direction is not limited to the one in the embodiment, and may be a symbol in another shape.

FIG. 4 is a flowchart showing an example of the flow of these series of scroll display operations. In the figure, P is the digit position of the display RAM l indicated by the display head pointer 2;
C is the number of data to be displayed, n is the number of digits of the multi-digit display 3, m
is the number of digits in the data area of display RAM l.

After the display processing routine and the scroll key processing routine are completed, it is first determined whether or not P indicates the start address of the display RAM l, and if it does not indicate the start address, the leftmost scroll direction symbol <, , and if the start address is indicated, it is determined whether c≦n without blinking the scroll direction symbol at the left end. If C≦n, the scroll direction symbol at the right end will be displayed all blinking and the operation will be completed, but C≦
In the case of n, the operation is completed without blinking the rightmost scroll direction symbol.On the other hand, if the leftmost scroll direction symbol 7 is blinking, P+n)c and P+n~m are established. If it is true, the scroll direction symbol at the right end is displayed blinking and the operation is completed, and if it is not established, the operation is completed without displaying the scroll direction symbol at the right end blinking.

In the above embodiment, a device for sequentially scrolling and displaying a one-line multi-digit display along the direction in which the digits are arranged has been described, but similar effects can be obtained with CRTs and other two-dimensional display devices. It will be done.

In the case of these two-dimensional display devices, the first line and the last line of the display screen may be assigned to scroll direction symbols, or the scroll direction symbols may be additionally displayed on the screen.

As described above, according to the present invention, a scroll type display device that can reliably identify the presence or absence of undisplayed information can be realized, and is suitable for display devices of various electronic devices.

[Brief explanation of the drawing]

FIG. 1 is a configuration explanatory diagram showing one embodiment of the present invention, FIG. 2 is a configuration explanatory diagram showing an example of a display element, FIG. 3 is an explanatory diagram of a display example, and FIG. 4 is an example of the flow of scroll display operation. It is a flowchart which shows. 1... Display RAM, 2... Display start pointer,
3...Multi-digit display, 4...Scroll key.

Claims (1)

[Claims] In a scroll type display device that is configured to display displayed information by scrolling it sequentially, if there is undisplayed information that is continuous to the displayed information being displayed on the display device, the scrolling direction for displaying the undisplayed information. 1. A scroll-type display device characterized in that a symbol instructing is displayed as part of the display information at the end of the display information being displayed.