JPS5846475A - Pattern recording device - Google Patents

Abstract

PURPOSE:To record and display a pattern, obtained by a television camera, through a simple device, by extracting a synchronizing signals from the pattern, and coding it into a binary signal and then finding and storing X and Y coordinates of a rising and a falling point. CONSTITUTION:A horizontal synchronizing signal H and a vertical synchronizing signal V are separated at part 2 from a pattern obtained by a television camera 1, and then inputted to counters 3, 5, and 6. The counter 3 is reset by the vertical synchronizing signal V to count an Y-coordinate value (y). The counters 5 and 6 count clock pulses from a reference signal oscillator 4, and are reset by the horizontal synchronizing sigal H to count X-coordinate values x1 and x2. A level detector 7 codes the output of the camera 1 into a binary signal and a differentiating circuit 8 detects its rise and fall to output a pulse P. An I/O port 9 calculates inputs y, x1, x2, and P to find coordinates xp and yp of a level variation point successively, and then stores them in a memory 10. A CPU20 performs display 20a and printing 20b at need. Thus, patterns are recorded easily.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for recording figures as data in an IkXY coordinate system.

Various image devices have been put into practical use as means for recording figures, but since most of these devices directly record images as electrical signals, the recording devices are expensive (5 points).

The present invention provides a graphic recording device which reduces the recording memory capacity Mkw by mainly sampling the outline of the graphic and recording this point as YXY coordinates.

The graphic recording device of the present invention will be explained below.

FIG. 1 shows an embodiment of the present invention as a block diagram of a circuit for recording graphics, in which 1 is a TV camera, 2 is a synchronization separation circuit for extracting a synchronization signal from the output of the TV camera 1, and 3 is a block diagram of a circuit for recording graphics. Reset by vertical sync pulse and horizontal sync pulse′? 4 is a reference signal oscillator; 5 and 6 count the clock pulses of the reference signal oscillator 4, and are reset by the horizontal synchronizing pulse. a 30th power counter; 7 a level detector for extracting the outline of a figure from the image signal of the TV camera 1; 8 a differential circuit;
8 is the 11th 2nd . and I10 port which outputs the count value of the third counter 3°5.6 to the memory, 10 is the memory, 20 is the CPU coupled to the memory 101C,
Display device 20a if necessary.

A printer 20b and a keyboard 20c are connected.

Continuing, the recording operation in the block diagram is explained in the TV in Figure 2.
This will be explained with reference to the screen and the waveform diagram in FIG.

First, assume that a figure F is captured on the TV screen K in FIG. The upper left corner of the screen S is set as the origin O of the XY coordinates, with the horizontal direction being the VX axis and the vertical direction being the Y axis.

The waveform obtained during the whistle-th horizontal period of TV camera 1 is:
It can be indicated by YK in FIG. This horizontal synchronizing pulse H, of Y, is extracted by the synchronizing separation circuit 2, and is counted by the first counter 3 as the MKth pulse. Further, the horizontal synchronization pulse 11. is supplied as a VC reset signal to the 20th counter 51 and the third counter 6, and after these counters 5 and 6 are reset by the horizontal synchronizing pulse H8, they count the clock pulse CK-& of the reference signal oscillator 4.

On the other hand, the level detector 7 detects the point Y indicating the outline of the figure F from the above-mentioned Y*'rH, and the point Y at the level.

The differential circuit 8 generates a rising edge pulse P and a falling edge pulse P1 at the change points Y, Y, , FC of the signal Dl.

I10 boat 9 is the rising edge pulse P.

K, so the first counter 3. Since the count value of the second counter 5 is inputted in the memo 1J101c, the Y-axis coordinate YK where the first counter 3 is counting at the outline point Y of the figure F.
Then, the X-axis coordinate X1 counted by the 20th counter 5 can be recorded.

Similarly, the falling edge pulses P and K cause the count value of the first counter 3 and the count value of the third counter 6 to be
The coordinates of the outline point Y2 are recorded in the memory 10 as 'Yx+X1).

Next 1c, when the horizontal scanning of the T'V camera 1 moves to the +1st horizontal scan, the first counter 3 counts the +1st horizontal synchronizing pulse)[g++', and sets Y*++ as the Y-axis coordinate. In addition to showing the second. 30th counter 5. and 6 is IIg
After being reset by the horizontal synchronizing pulse of ++, the clock signal CKY is counted. When there is an output pulse from the above-mentioned differentiating circuit 8 that detects the outline of the figure F, at that point the 110 boats 9 are set to the first . Second. The count value l of the third counter 3, 5.6 is input to the memory 10.

Below, figure FIC images are taken one after another by TV camera 1.
The XY coordinates for each horizontal period are stored in memory 10K (xI
It is input in the form of (l, yn).

The data of the figure F stored in the memory 101C is sent to the CPU 2.
0 to display @ 20 a or printer 20
In addition to being able to output bK, graphic analysis can be performed using the keyboard 20cK.

In addition, by adjusting the detection level of the level detector 7, complex figures with gradations can be classified into double line shapes, and XY
It can be stored in memory l+10 as coordinate data,
For color screens, the information can also be stored separately for each color area.

Since the device VIJ can be set for each screen using the vertical synchronization pulse, analysis of changing figures using the memory to ICRAM can be performed continuously with 1cPtJK.
It can also be used as an external shape discrimination and sorting device.

As explained above, the graphic recording device of the present invention
Since it took 5K to store the figure data as XY coordinates in the memory every horizontal scanning period of the camera, it is possible to
This method has the advantage that data in the Y coordinate system can be obtained and the processing speed can be improved.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the graphic recording times M'& of this invention.
FIG. 2 is an explanatory diagram of the TV screen, and FIG. 3 is a waveform diagram. In the figure, 1 is a TV camera, 2 is a synchronous separation circuit, 3°5.6
is a counter, 4 is a reference signal oscillator, T is a level detector,
8 indicates a differential circuit, and 10 indicates a memo IJY.

Claims (1)

[Claims] A TV camera for photographing a figure; a first counter that counts the horizontal synchronization signal of the TV camera and is reset by the vertical synchronization signal; and a level detector that binarizes the image signal of the TV camera at an appropriate level. , an edge pulse generator for extracting the change point of the output signal of the level detector, and a second edge pulse generator for counting reference signal pulses and being reset by a horizontal synchronizing pulse.
．． and a 30th counter, the first . Second. and a third counter output memory pressure.