JPS6081987A - Picture memory device - Google Patents

Abstract

PURPOSE:To enable to apply to various input TV systems by simple constitution by using an IC memory as an address section of a picture memory in a control section that makes memory action indication of input picture signal and conversion display action indication, and letting it have address conversion function. CONSTITUTION:Various TV picture input signals are supplied to a picture memory device 1 through an input cable 2 and stored in an IC memory section 4 through an A/D converter 3. Picture information stored in the memory section 4 is outputted to an output cable 8 through a D/A conversion section 5. A control section 7 is linked with an external switch 6 and performs memory action indication of input picture signal and conversion display action indication of stored signal. An IC memory is used in the memory address section 17 in the control section, and divided into blocks by combination of up and down inversion signal lines discrimination lines 18 of input TV signals. Address input of in each block is executed from an address counter section 9. Thus, two kinds of TV systems can be dealt with by only the address section 17, and up and down inversion function can also be included.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an image storage device that uses a C memory element and has a storage function for various TV systems and a conversion function such as vertically flipping an image. .

[Prior art]

A conventional device of this type is shown in FIG. (
1) is an image storage device. (2) is the input cable, (
3) is an analog/digital converter, (4) is a part of IC memory, (5) is a digital/analog converter, (6) r/
″i.

The input and output cables (2) and (8) are connected to external equipment (eg, TV camera, monitor). Further, in the control section (7), the center of control of the IC memory part (4) is configured as shown in FIG. (9) is address 9922 ~ part, (4o) # by Kakunku element
Vertical inversion transformation ai1 by g x -on*-PK
m, (11) counterstop instruction section using Fi gate element, (12) memory timing generation section, (
13) is the memory address selection section, (14) Ii basic clock signal line, (15) is the vertical inversion signal line from the external switch, (16) h 7' is the converted image signal m〒 water next The operation will be explained. Input cable (2
) The signal input to the analog/digital converter (
In step 3), it is converted into a digital signal based on the synchronization signal from the control unit (7), and stored in a part of the IC memory (4).

Inside the control unit (7), a part of the address counter (9) is counted up by the basic clock (14), and this signal drives the memory timing generation unit (12) and memory address selection unit (13). The input video signal is stored in the IC memory part (4).

As input TV signal for example 525 T/60 HZ and 6
Let us consider a case in which it is necessary to support two methods of 25 trees and 150 Hz. Since the effective area of the image is different between the two methods, the count numbers of the part of the address counter (9) are different. It also becomes the stop counter element M of the counter stop instruction section (11). For this reason, in conventional devices, this block was manufactured separately according to the input TV method, and the corresponding image information stored in the IC memory part (4) was transferred to the digital-to-analog converter (5) and the control unit ( The synchronization value (8) from 7) is output to a display device such as a monitor. When the signal (15) for vertically inverting the image comes from the external switch (6), addressing of the part of the IC memory (4) must be performed from the opposite direction, so the signal of part of the address counter (9) is by the vertical inversion conversion function unit (1o),
The signal is inverted and input into the IC memory element (4).

Since conventional image storage devices are configured as described above, separate internal devices (
This method had drawbacks such as having to manufacture a board (substrate), being expensive, not being able to respond instantaneously to different input signals, and having a complicated memory address section.

[Summary of the invention]

This invention was developed in order to eliminate the drawbacks of the conventional ones as described above, and by implementing the memory address section in the control section with an IC memory element, it can be easily and inexpensively manufactured without deteriorating the performance. It is an object of the present invention to provide an image storage device that can instantly support various TV systems with the same device, and that can easily add an image conversion function in the future.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. Third
In the figure, (9) is a part of the address counter by a counter element, (12) is a memory timing generator, (13) is a memory address selector, (14) is a basic clock signal line, and (15) is a The vertical inversion signal line from the external switch, (16) is the digitized image signal line, (17) is the memory address section by IC memory,
('18) is the input TV signal system identification line from the external switch, and (4) is a part of the ld C memory.

In this invention, the overall configuration is the same as before.
As shown in the figure. The operation of the control section (7) therein will be explained with reference to FIG. The memory address section (17) using the C memory can be said to have the address conversion function of the address counter section (9) in the sense that the contents of the memory operate as the address of the image memory (4). When adapting to two types of input TV signal systems and performing the vertical inversion function in each signal system, the memory and address section (17) connect the vertical inversion signal line (15) and the input TV signal system identification line ( 18) can be divided into four blocks. Address input in each block is performed from the address counter part (9).

The contents of the memory (17) at the specified address are stored in the order of 625, 624, .
When 60H2 is not inverted, the order is 1, 2.3, ...525)
If the counter stop signal is also written in advance so that it can be obtained as a memory output, the memory address section (17) can handle two types of It is compatible with the T-matrix system, and can also be used with the vertical inversion function section (10) and counter stop instruction section (10) shown in Figure 2.
A simple address section that includes 1) is constructed.

The parts other than the control section (7) are the same as the conventional device.

In the above embodiment, only vertical inversion was explained as the conversion function of the image storage device, but this memory
If you use the addressing method, a fixed 1 in the screen
A similar effect can be expected when adding a new conversion function, such as the enlarged display of the /4 portion with a simple configuration.

[Effects of the Invention] As described above, according to the present invention, since the memory address section of the image memory is constituted by an IC memory element, it becomes a simple circuit that can be applied to various input TV systems, and the device can be made at low cost. Further, there is an effect that an image recording device can be obtained that can easily accommodate the addition of an image conversion function in the future.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the entire image storage device, FIG. 2 is a block diagram of a conventional memory address section, and FIG. 3 is a block diagram of a memory address section according to an embodiment of the present invention. (1)...Image storage device, (2)...Input cable, (3)...Analog-to-digital converter, (4)...
・Part of IC memory, (5)...Digital-to-analog conversion section, (6)...External switch, (7)...Control section,
(8)...Output cable, (9)...Address'.
Part of Kakunta, (12)...Memory timing generation section, (13) Memory address selection section, (14)...
Basic clock signal line, (15)...vertical inversion signal line,
(16)...Image signal line, (17)...Memory address section, (18)...Input TV signal system identification line Note that the same reference numerals in the drawings indicate the same or equivalent parts. Agent Masuo Oiwa Figure 1 Figure 2 Procedural amendment (voluntary) 29 Name of the invention Image storage device 3, person making the amendment Relationship to the case Patent applicant address 2-3 Sara-chome, Marunouchi, Chiyoda-ku, Tokyo Name
(601) Mitsubishi Electric Co., Ltd. Representative Katayuni 8 Department 4, Agent 5, Subject of amendment + 11 Detailed explanation of the invention in the specification column 6 Contents of the amendment (IXIJI specifications are corrected as follows.

Claims (1)

[Claims] An analog-to-digital conversion unit that converts various TV image input signals into digital signals; a control unit that, in conjunction with an external switch, instructs storage operations for input image signals and instructions for converting and displaying already stored signals; A part of the IC memory that is activated by a signal from the control unit and stores and reproduces the digital image signal output from the analog-to-digital conversion unit, and converts the digital image signal reproduced and output from the IC memory unit into an analog signal. What is claimed is: 1. An image storage device comprising a digital-to-analog converter for outputting data, characterized in that an IC memory is used as the address section 2 of the image memory in the control section and has an address conversion function.