JPS5928911B2 - How to output dot patterns - Google Patents

Description

[Detailed Description of the Invention] This relates to a method for inputting dot patterns of characters and figures and displaying them on a cathode ray tube, etc. In particular, it is possible to use a dot pattern with a predetermined number of dots or less, and in addition, it is possible to input dot patterns of characters and figures. This invention relates to a dot pattern output method that enables output whose size does not change depending on the difference in the number of dots.

When a dot pattern of characters or figures is input and displayed on a device using a cathode ray tube or the like, if the number of dots constituting the dot pattern is different from the predetermined number of dots for the device, the display cannot be output.

Therefore, the only way is to create and use a new dot pattern so that the dot pattern is edited with the predetermined number of dots that match the device. However, on the other hand, devices do not use a uniform number of dots, and the number of dots varies widely depending on the device.As a user, even if the dot pattern is the same character or figure, if the dot configuration is different, each dot pattern It means preparing. Therefore, the number of dot patterns to be prepared is enormous, resulting in high costs and management problems. An object of the present invention is to eliminate the above-mentioned problems.In a device that inputs a dot pattern of characters or figures and outputs it for display on a cathode ray tube or the like, the number of dots constituting the input dot pattern is set by the device. If the predetermined number of dots is different from the predetermined number of dots, the difference between this predetermined number of dots and the number of dots of the input dot pattern is added to the dot pattern as a virtual dot in the pattern buffer circuit at the time of input. output of a dot pattern, which is characterized in that the dot pattern is stored in a pattern buffer, and upon output, the enlargement rate of the dot pattern is determined using the added virtual dots, and the dot pattern is enlarged and displayed so that it can be displayed with a predetermined number of dots. This is accomplished by a method.

The present invention will be described in detail below with reference to the accompanying drawings.

1 to 3 are explanatory diagrams according to the present invention, and FIG. 1 is an explanation of virtual dots. When the dot pattern area shown in figure A is composed of X dots and Y dots, when the output control circuit is used to control the output with a dot pattern of X1 dots and Y1 dots. , the white dot that does not appear even if output is virtual dot 1, and the virtual dot A corresponding to X dot and Y dot is X1 dot and Y1 dot, respectively.
By adding an r sor port, the dot difference ratio 2. Ding. ,
By adding Y dot in an analog manner, X1, Vk
The dot configuration is ゞ' K Yl, and the outputs X2 and Y2 shown in Figure B are obtained. X2 and Y2 have different dot configurations from X and Y, but the outputs are the same size. be able to.

FIG. 2 shows a block diagram of the process up to the output of the dot pattern.

When inputting the dot pattern a to the pattern buffer circuit 2, the virtual dot control circuit 6 adds virtual dots and stores the dot pattern in the pattern buffer circuit 2. The stored dot pattern is controlled through the output control circuit 3, and then the enlargement control circuit 4 analogically enlarges the signal dot ratio from the virtual dot control circuit 6, thereby eliminating the difference in size due to the difference in dot patterns. The display is output to the cathode ray tube while being controlled to avoid this. Next, the contents of the enlargement control circuit 4 are
As shown in the figure. The DA conversion circuit 4a is a circuit that generates a voltage proportional to the specified character size, and its output is given as a reference input to the multiplication type DA conversion circuit 4c through the correction circuit 4b. Control is performed so that the output of one step becomes the output e necessary for deflection between one dot of the dot pattern. The dot coordinates are multiplied by e in a multiplication type DA conversion circuit 4c to produce a deflection signal. As a result, when the device uses a pattern of X dots in the X direction and Y dots in the y direction, e-X,
It can have an output range of e-Y. When using a dot pattern with virtual dots added to this device, the actual number of dots displayed is X1 dot in the X direction and Y in the Y direction.
Since only one dot is included, the output range of the deflection signal is e-Xl, e-Y1, which is insufficient to output the specified character or graphic size, so switch S of the correction circuit 4b is switched and the output range of the deflection signal is e-Xl, e-Y1. Multiply D by connecting to R2 from
The same output range can be obtained by correcting the reference input of the multiplication type DA conversion circuit 4c so that the output of one step of the A conversion circuit 4c satisfies e'.

As explained above, in the present invention, by adding virtual dots 1, which could only be used in the conventional dot pattern that is the same as the dot configuration used in the device,
It can be used with dot patterns having different dot configurations used by the device, and by providing a correction circuit 4b during output, the size of characters and figures can be changed by correcting virtual dots. It is possible to output without

[Brief explanation of the drawing]

1 to 3 are explanatory diagrams according to the present invention.

Claims (1)

[Claims] 1. In a device that inputs a dot pattern of characters or figures and displays it on a cathode ray operator, etc., the number of dots that make up the input dot pattern is different from the predetermined number of dots set by the device. If not, the pattern buffer circuit stores the difference between this predetermined number of dots and the number of dots in the input dot pattern as a virtual dot, adds it to the dot pattern and stores it in the pattern buffer, and outputs the added virtual dot. A method for outputting a dot pattern, characterized in that the magnification rate of the dot pattern is determined based on the dots, and the dot pattern is expanded and displayed so that it can be displayed with a predetermined number of dots.