JPH0553554A - Processing circuit for still picture - Google Patents

Abstract

PURPOSE:To obtain the processing circuit which makes a full-color display without any increase in memory capacity as to a circuit having a memory stored with characters for editing and displaying and figure information. CONSTITUTION:A color setting register 30 where the colors of characters and figure data are set is provided in a still picture system and a selector switches the data in the color setting register 30 and data in an image memory 15 according to whether or not there are data in a character and figure memory 17. When character and figure data C appear at the time of an on-screen display of characters and figures on image data, a 1st selector 31 switches the image data to figure color setting data A, which are outputted as on-screen display data D. The color setting register 30 can be stored with many pieces of setting information and is usable for the full-color display. Then when the image data and character and figure data are edited, a 2nd selector 32 puts data E from the image memory 15 and data F from the character and figure memory 17 together.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a still image processing circuit capable of full-color processing of character and graphic information input by a still image input device without increasing the memory capacity.

[0002]

2. Description of the Related Art Conventionally, in a still image system, character and graphic data to be edited into image data is provided with a dedicated character generator inside or outside the still image system, and the character and graphic generated by this character generator are provided. Data is transferred to and stored in the memory for characters and graphics in the still image system. Further, the image data is stored in the image memory inside the still image system.

In a device that handles such digitized image information and character and graphic information, characters and graphics such as edit and on-screen images are in full color (for example, if R, G, and B are each 8 bits). (16.77 million colors)
On the other hand, in order to save the memory capacity, the colors that can be edited and displayed have been determined such that R, G, and B are each 8 bits in 1 bit.

[0004]

As described above, in order to save the memory capacity, it is decided that the number of colors that can be edited and displayed is extremely small, such as 8 colors for each bit of R, G, and B. , I couldn't edit or display enough colors. If full color is used, the capacity of the character and graphic memory becomes too large, which is extremely expensive.

An object of the present invention is to provide a memory having a memory for storing characters for editing and display and graphic information, which can handle full color without increasing the memory capacity.

[0006]

SUMMARY OF THE INVENTION According to the present invention, input digital image data and character and graphic data are stored in an image memory and a character and graphic memory in a still image system, respectively. In a still image system in which data is output as digital data or converted into analog, the characters are displayed in the still image system.
A color setting register for setting the color of graphic data is provided, and a selector is provided for switching the data of the color setting register and the data of the image memory depending on the presence or absence of the data of the character and graphic memory. This is a processing circuit for a still image.

[0007]

When displaying characters and graphics on the image data on screen, the image data B from the image memory and the characters and graphics color setting data A from the color setting register are sent to the first selector. At the same time, the character / graphic data C from the character / graphic memory is sent to the first selector as a select signal for displaying or not displaying the character / graphic, and controls the switching between A and B. That is, when C is 1 (when a character or graphic appears), the first selector switches from B to A, and the character or graphic is output from the first selector as data D for on-screen display.
This data D is displayed on the monitor TV.

If the color setting register is composed of R, G, and B bits, 16 bits from the color setting signal input terminal.
The setting information of 770,000 colors can be stored in the color setting register via the CPU, and this color setting data is sent to the first selector as the signal A, so that it is possible to support full color.

Next, when editing the image data and the character and graphic data, the data E from the image memory and the data F from the character and graphic memory are combined by the second selector. At this time, the user can arbitrarily set the color setting of characters and figures.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 10 is a still image system, and this still image system 1
A still image input device 11 and a recording / reproducing device 12 are connected to the input side of 0 through an interface 14, and
A monitor TV 13 is connected to the output side.

An image memory 15 and a character / graphics memory 17 are connected to the interface 14 via a second selector 32. The image memory 15 and the character / graphics memory 17 are connected via a first selector 31. It is coupled to the D / A conversion circuit 18. In addition, this D / A conversion circuit 18
Are coupled to the monitor TV 13 via a buffer amplifier 19.

A CPU 20 such as a GSP (graphics system processor) and a controller performs memory control and the like, and a color for inputting a color setting operation signal of character and graphic data is input to the input side of the CPU 20. The setting signal input terminal 33 is connected. Further, on the output side of the CPU 20, a color setting register 30 for setting the color of character and graphic data is provided.
And the color setting register 30 is connected to the first
It is coupled to the selector 31 and the second selector 32.

In the above structure, data is input from the still image input device 11 such as a film scanner, an image scanner, a still image camera or the like. When this data is image data, the still image input device 11
Are digitized to 6 to 10 bits, for example, 8 bits, input through the interface 14, and stored in the image memory 15.

When the data is character and graphic data, the character and graphic data (1 bit) generated by a dedicated character generator is digitized and input by the still image input device 11 like the image data. It is transferred to and stored in the character / graphic memory 17 in the system.

Here, when displaying characters and figures on the screen in the image data, the image data B from the image memory 15 and the characters and figure color setting data A from the color setting register 30 are the first selectors. Sent to 31. At the same time, the character / graphic data C from the character / graphic memory 17 is sent to the first selector 31 as a select signal for displaying or non-displaying the character / graphic, and controls switching between A and B. That is, when C is 1 (when a character or graphic appears), the first selector 31 switches from B to A, and the character or graphic is output from the first selector 31 as the on-screen display data D. .. This data D is displayed on the monitor TV 13 via the D / A conversion circuit 18 and the buffer amplifier 19.

The color setting register 30 includes R, G,
B If each has 8 bits, color setting signal input terminal 3
The setting information of about 16.77 million colors from 3 can be stored in the color setting register 30 via the CPU 20, and the color setting data becomes the signal A and the first selector 31.
Have been sent to and are therefore available in full color.

Next, when the image data and the character / graphic data are edited, the data E from the image memory 15 and the character / graphic memory 17 are operated by the second selector 32.
And the data F from At this time, the user can arbitrarily set the color setting of characters and figures.

[0018]

As described above, according to the present invention, the input digital image data and the character and graphic data are stored in the image memory and the character and graphic memory in the still image system, respectively. In the still image system that outputs the data of the digital form as it is, or is converted into an analog form and output, in the still image system, characters,
Since a color setting register for setting the color of the graphic data is provided and a selector is provided for switching the data of the color setting register and the data of the image memory depending on the presence or absence of the data of the character and graphic memory, Characters and figures can be written in the image data, and full-color characters and figures can be edited and displayed on-screen even if there is no memory capacity for the characters and figures corresponding to full color.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a still image processing circuit according to the present invention.

[Explanation of symbols]

10 ... Still image system, 11 ... Still image input device, 12
... recording / reproducing device, 13 ... monitor TV, 14 ... interface, 15 ... image memory, 17 ... character, graphic memory,
18 ... D / A conversion circuit, 19 ... Buffer amplifier, 20 ...
CPU, 30 ... Color setting register, 31 ... First selector, 32 ... Second selector, 33 ... Color setting signal input terminal.

Claims (2)

[Claims] 1. Input digital image data and character and graphic data are respectively stored in an image memory and a character and graphic memory in a still image system, and the data in the image memory is digital or analog. In a still image system adapted to be converted into and output to, a color setting register for setting the color of character and graphic data is provided in the still image system, and the data of the color setting register and the data of the image memory are provided. A still image processing circuit, comprising a selector that switches depending on whether or not there is data in the character / graphic memory. 2. The selector comprises, separately and independently, a first selector for on-screen display and a second selector for editing image data, characters and graphic data. 1. A still image processing circuit according to 1.