JPS5930383A - Picture data filing device - Google Patents

Abstract

PURPOSE:To attain sufficiently the file function without deteriorating the picture quality, by filing a data collected from a body to be inspected to a video tape recorder via an interface section with computer control. CONSTITUTION:The data collected from a body to be inspected at a CT scanning device 1 is controlled with a computer 2 and stored temporarily on a disc 3 and given to an interface section INT while being monitored with a CRT4. This data is subject to PCM modulation at an input picture interface section 5, converted into a video signal SVD at a picture converting section 11 and recorded on a track of a video tape recorder VTR9. A picture indexing tag formed with the computer 2 is converted into a video signal at a retrieval tag section 7 and controls the mechanism of the VTR9 at a mechanism control section 8. Thus, the filing is attained sufficiently without being attended with the deterioration of picture quality.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an apparatus for filing image data that has been subjected to image reconstruction, for example, by a computer.

[Background technology and its problems]

For example, in the field of medical equipment, scan data obtained by a CT rack (computed tomography system) is reconstructed by a computer and processed for diagnosis. were recorded and stored on magnetic tapes that were easily connected to computers (also called filing).

However, since magnetic tape is relatively expensive, there has been a problem in that the cost of the entire CT apparatus increases. On the other hand, although image data filing devices using optical means such as X-ray film or I-Laroid cameras are inexpensive, they lack changes in gradation, color tone, and shading compared to the dynamic range of both CT images. There was a problem in that the image quality deteriorated and the filing function could not be fully demonstrated.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an image data filing device that is inexpensive and can fully perform the filing function without degrading image quality.

[Summary of the invention]

In order to achieve the above object, the present invention provides an apparatus for filing image data subjected to image reconstruction by a computer, which includes a video tape recorder for recording and holding the image data, and is controlled by the computer.
An image conversion section that mutually converts image data and video signals, a search tag conversion section that converts image index tags created by a computer into video signals, and a mechanical control section that controls the mechanism of the video tape recorder. The device is characterized in that it is provided with an interface section.

[Embodiments of the invention]

The present invention will be specifically explained below with reference to Examples.

FIG. 1 is a block diagram showing one embodiment of the present invention. 1
2 is a CT scanning device that collects data from the subject; 2 is a CT scanning device that performs image reconstruction based on the data obtained from t1; This is a computer that controls the output or performs searches by using tags as image indexes, which will be described in detail later. 3 is a disk for temporarily storing both CT images, and 4 is a computer that performs searches. This is a CRT as a monitor. Numeral 9 is a video tape recorder (hereinafter abbreviated as VTR), and data is exchanged with the computer 2 via an interface unit INT.

The interface unit INT includes an input image data ink-face unit 5 that converts 07 image data into a video signal;
An output image data interface section 6 that takes in images recorded on the VTR 9, an audio interface section 7 that converts the image index (tag) created by the computer 2 into an audio signal, and a control signal for sending the VTR 9, etc. It is composed of a mechanical control interface section 8 for inputting and outputting.

The input image data interface section 5 includes a timing memory 5A, a vertical synchronization i4 integrity generation circuit 5B, and a CRC.
It is composed of a correction code generation circuit 5C, a video modulation circuit 5D, and a modulation clock generator 5E. The modulation clock is created based on the output of the oscillator (X, 'rat) osc.

The output image data interface unit 6 includes a timing memo υ (FiF'.) 6A, an error correction circuit 6B, a demodulation synchronization separation circuit 6C1, a demodulation clock generator 6D, and a video amplifier 6E. The demodulated clock is generated based on the output of oscillator O8C.

The above interface units 5 and 6 are collectively referred to as an image conversion unit 11.

The audio interface section 7 has a timing l10.
7A, a tone burst modulation/demodulation circuit 7B, and an audio amplifier 7C, it converts the tag (tag, code) as a search index created by the calculator 2 into an audio signal and outputs it. There is. In this sense, it is called a search tag conversion section.

The mechanical control interface '1B (sometimes referred to as the single K (5) mechanical control section) is composed of the mechanical control l108A, and is designed to generate control signals to control forwarding, fast forwarding, rewinding, etc. of the VTR9. There is.

Incidentally, the computer 2 is attached with a console for man-machine interaction.

Next, the operation of the device will be explained with reference to the waveform diagram in FIG.

The reconstructed 07 image data is stored on disk 3,
Retained temporarily. If you want to store it on videotape,
The operator specifies the target image on the CRT 4. In response, the computer 2 determines the position of the input data on the disk and the output position on the video tape, and outputs the 07 image data to the interface section INT. The input image data is subjected to PCM modulation (
) base code modulation) and convert it into a video signal SvD, V
Record on the track of TR9. The image data from the computer 2 is also input to the timing memory 6A of the output image data interface unit 6, and is used to determine the timing for inserting horizontal and vertical synchronization signals into the continuous digital signal. It is now possible to Also, vertical synchronization A? The IJT generation circuit 5B and the CRC correction code generation circuit 5C generate CT signals for later error correction.
It is used to generate signals to be added to image data. Digital data is NRZ or N to gray level.
The signal is modulated using the RZ i method, and then combined with various synchronizing signals by the video modulation circuit 5D, output as a video signal SVD as shown in FIG. 2, and recorded on the VTR 9.

In the waveform diagram of FIG. 2, Stt indicates a horizontal synchronization signal, IH indicates one horizontal period, SD indicates a data synchronization signal, DA indicates a data portion, W indicates a white level, and B indicates a black level. Furthermore, the search tag output from the computer 2 is input to the timing l107A of the audio interface section 7, converted into an audio signal by the tone burst modulation/demodulation circuit 7B, and amplified by the audio amplifier 7C, and outputted as an audio signal SOD to the audio signal of the VTR 9. The image data is input to the circuit and recorded on the audio track portion of the videotape in correspondence with the recording of the image data.

In contrast to the above case, in order to obtain the image data recorded in the VTRQ, the operator only has to set the videotape and then specify the desired image tag from the CRT 4.

That is, according to a command from the computer 2, a synchronization signal and a data signal are separated by a demodulation synchronization separation circuit 6CK via a video amplifier 6E in the output image interface section 6, and an error correction circuit 6B performs error correction on the data. It is loaded into the computer 2 via the timing memo IJ 6A, loaded onto the disk 3 along with the search tag, and CR
This is done by displaying it on T4.

The present invention is not limited to the embodiments described above, and various modifications are possible. In the above embodiment, the apparatus was described for storing image data obtained by a CT scanning device, but it can also be applied to storing image data obtained by digital radiography. That is, as shown in FIG. 3, an image conversion section 11, a search tag conversion section 7,
It is also possible to insert and connect an interface section INT constituted by a mechanical control section 8 between the digital radiography apparatus 10 and the VTR 9, and perform filing in the same manner as in the previous embodiment.

〔Effect of the invention〕

According to the present invention as detailed above, it is possible to provide an image data filing device that uses video tape as a filing medium, is inexpensive, does not cause deterioration in image quality, and can fully demonstrate its filing function. can do.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the invention, FIG. 2 is a data waveform diagram for explaining the operation of the invention, and FIG. 3 is a block diagram showing another embodiment of the invention. 1...CT scan device, 2...computer, 7...
Search tag conversion section, 8... Mechanical control section, 9...
-Video tape recorder, 10...Digital radiography, 11...Image conversion unit. Representative patent attorney Kensuke Chika (and 1 other person) (9)

Claims (1)

[Claims] In an apparatus that performs image data reconstructed by a computer, a video tape recorder is provided to record and hold the image data, and the video tape recorder is controlled by the computer. An interface section is provided that includes an image conversion section that performs conversion, a search tag conversion section that converts an image index tag created by a computer into a video signal, and a mechanical control section that controls the mechanism of the video tape recorder. Image data 7 Eyring device 0 characterized by