JPH01295298A - Rotating angle graphic display instrument - Google Patents

Abstract

PURPOSE:To enable rotation graphic display at a high speed without having the burden of a CPU by reading out the graphics added with rotating angle information from an image memory means to a display device. CONSTITUTION:Image patterns are arithmetically processed in accordance with rotating angle information and the image rotating angle information is outputted from an image information processing part 1. The image information stored in the image memory means 3 by the image rotating angle information is read out as the rotating angle graphics corresponding to the image rotating angle information to the display device 4. The rotation angle graphic display instrument which graphically displays the rotation graphic display part easily at a high speed on a display screen 4 without having or increasing the burden of the CPU is thereby obtd.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention uses a display device (electronic display) such as a CR"l" or an LCD (liquid crystal display) to display a rotation angle graphic, for example, an aviation instrument. It relates to rotational angle figure display instruments that can be used as azimuth figure display instruments such as HS I (HORIZON181.s) 11A ON TNDICATOI (), and in particular, rotation angle figure display that can display rotational angle figures at high speed. It is related to a meter.In the following explanation, as an example of a rotation angle graphic display meter,
An azimuth figure display instrument that displays an azimuth figure will be explained as a specific example.

[Conventional technology] The conventional technology will be explained below with reference to the drawings.

FIG. 3 is a diagram for explaining the conventional technology.

In FIG. 3, a display device (for example, H3 for aviation instruments) consists of a plurality of display elements. The circular part β is a compass skirt part that indicates the direction, and displays the direction figure. This compass card part The figure of β is sequentially rotated T
i] It has become a skill (for example, 20
The display data is updated in steps 4082 to 4082). The display processing at this time is to use CP LJ (not shown here) to: (1) decompose all figures and characters into line data, perform rotation calculation processing on all the decomposed data, (2) or , prepare character data rotated by 1 to 2 degrees, select an appropriately tilted font, and display it.

1] Problems to be Solved by the Invention This conventional rotation angle graphic display instrument has the following problems.

■: The processing time of CP tJ is proportional to the number of data, which places a heavy burden on the CPU, making it impossible to perform complex image processing.

(2) It requires a large number of character fonts and a large amount of storage elements, such as read-only memory (ROM), and is less effective for arbitrary character strings than the old version.

The present invention has been made in view of these problems of the conventional technology, and its main purpose is to solve the problems of C.
To provide a rotating angle figure display instrument that displays a rotating figure on a display surface simply and at high speed without burdening or increasing P tJ.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides an instrument for displaying an angle of rotation that calculates an image pattern based on the angle of rotation and information from an image information processing section. The image rotation angle information ? is outputted by the rotation angle figure readout signal output means, and the image ff is stored in the image recording/hiding means based on this image rotation angle 1 information.
f-report the image 1. The rotation angle figure is read out on the display device as a rotation angle figure according to the Q1 rotation angle information.

[Example] Examples will be described with reference to the drawings.

In the following drawings, parts that overlap with those in FIG. 3 are given the same numbers, and their explanations will be omitted.

FIG. 1 is a block system diagram of an azimuth graphic display instrument which is a specific embodiment of the present invention, and FIG. 2 is provided for explanation of FIG. 1.
It is.

In FIGS. 1 and 2, 1 is an image information processing section. This image information processing section 1 has CO3 (Y), SIN (
Y), -CO8 (Y+456) and -3IN (Y+
45°) (where, Y is azimuth data, 1( is a constant (a constant value unique to the display device, here K - (2) I/2・I,
And let L be the number of pixels on one side of the display part)) angle SIN
, a storage unit 1a consisting of four storage devices (ROM) 1a1 to 1a, each storing CO3 values as a table;
An arithmetic processing unit 11 consisting of, for example, an addition/subtraction element, which reads values corresponding to azimuth information (yaw signal) Yam input from the outside from the storage unit 1a, performs arithmetic processing such as combination/addition, and outputs image azimuth information. Consisting of parts. This arithmetic processing unit 11 has, for example, a readout output of 5IN(Y), K, C
A first addition means 1b1 that adds the readout output of O8 (Y+45°) and the previous addition result value, and a first addition means 11) 1
A second circuit that adds the output from CO8(Y) and the readout output from CO8(Y).
-3I for the addition means 1b2 and the readout output of CO3(Y)
a third addition means 1b3 for adding the readout output of N(Y+45°) and the previous addition result value; and a fourth addition means 1b4 for adding the output of the third addition means 1b3 and the readout output of 5IN(Y). Based on. By doing this, the following example of the azimuth figure readout signal output means according to one word of Yaw is the value of the address counter N and the address counter M.
generates the value of At this time, the algorithm of the image information processing section 1 is as follows.

■■■ H-H+〇l → At this time, the loop of ■ is for every 1 crotch (~10H1IZ) The loop of ■ is for every horizontal sweep (~21KHz) The loop of ■ is 1
The power interpretation that needs to be executed every double-sided sweep (~40H2) is 1 addition to M and N counters, 1 addition to M and N counters, 1 multiplication, and 1 addition to M and N counters.
CO32 operations are added, especially in ■, 1 can be determined by a constant, so SIN.

All CO8 can be stored in a separate ROM, and all discrepancies can be stored in a ROM.
A compass card rotation display signal can be obtained by only adding. 2 is a clock signal (synchronization signal) which inputs the image orientation information from the arithmetic processing section 1b.

By inputting the image basic clock) CK, the image storage means 3
The image information corresponding to the image displayed on the display surface 4 of the display device stored in is stored in the image storage means 3 as an azimuth figure corresponding to the image azimuth information, in other words, a figure including the rotation angle J information. The azimuth figure readout signal output means is composed of address counters M and N, for example, and outputs a signal to be read out to a display device. Here, the M and N values are controlled so that the M and N counters are incremented or decremented every one clock corresponding to one pixel. As a result, the image storage means 3 stores the image information to be displayed on the display device based on the signals from the address counters M and N.
Output as .

That is, in this FIG. 1, the direction information yam=O°
The display surface 4 of the display device when all the image Ih information corresponding to the image displayed on the display device stored in the image storage means 3 at the time is horizontally scanned and read out (represented by symbol S) Indicates the display state of the azimuth figure. Moreover, FIG. 2 shows the display when all the image information corresponding to the image displayed on the display device stored in the image storage means 3 is obliquely scanned and read out when the azimuth information Ya 1I7 = 30°. This shows the azimuth figure display state on the display surface 4 of the device. In FIG. 2, the azimuth figure display state has clearly been rotated by 30 degrees. At this time, symbols of songs that do not require rotation are displayed separately and overlappingly.

[One Example] The present invention is not limited to the configuration shown in FIG. 1. For example, since the image pattern extraction operation of the image information processing section in FIG. Calculation takes related to COS are sequentially calculated by the CPU, and the azimuth figure reading signal means is driven according to the calculation results to read and scan the image storage means according to the image azimuth information and output it to the display device. However, in this case, the computing power of the CPU will be considerably large. However, as before, everything is CP
Compared to methods that depend on U, this method allows for considerably more leeway in the CPU's capacity. Further, the display device is not limited to the above-mentioned CRT, and it goes without saying that a conventionally known device such as an LCD may be used.

Historically, since the above-mentioned azimuth figure is also a rotational angle figure, it goes without saying that the present invention is applicable to instruments that require a rotational display of a wide range of general figures. In short,
It is good to be able to cut out a portion (the size of a display such as a CRT) and display it in the location of or in the direction of a large painting @ROM>.

[Effects of the Invention] Since the present invention is configured as described above, it produces the following effects.

(1) Even if the rotation angle (azimuth) figure is quite precise and complex, it can be easily processed and displayed at high speed.

■: In the case of Fig. 1, the burden on the CPU is significantly reduced, so the functions of the necessary C1''U can be used for other tasks.

[Brief explanation of the drawing]

FIG. 1 is a block system diagram of an azimuth graphic display instrument which is a specific embodiment of the present invention, FIG. 2 is a diagram for explaining FIG. 1,
FIG. 3 is a diagram for explaining the conventional technology. DESCRIPTION OF SYMBOLS 1... Image information processing part, 2... Orientation figure read-out signal output means, 3... Image storage means, 4... Display surface.

Claims (1)

[Claims] an image information processing unit that performs arithmetic processing on a predetermined image pattern based on rotation angle information input from the outside and outputs image rotation angle information; and an image storage unit that stores image information corresponding to the image displayed on the display device. and a rotation angle figure readout which inputs the image rotation angle information from the image information processing section and outputs a signal for reading out the image information stored in the image storage means as a rotation angle figure according to the image rotation angle information. A rotation angle graphic display instrument comprising: signal output means;