JPH0879699A - Magnetic recording and reproducing device of high quality picture element picture - Google Patents

Abstract

PURPOSE: To magnetically record a high quality picture element picture even at the time of the drum of a small diameter by making a single picture sent from a storage means correspond to plural tracks of a recording medium and controlling a storage to read it out by dividing then by single track of the recording medium one by one. CONSTITUTION: A buffer memory 3 temporarily stores image information. A memory for display 4 reads the stored contents in the buffer memory 3 to store. A magnetic recording and reproducing processing part 11 reads all the picture elements of image information corresponding to a single image stored in the memory for display 4 and besides, this reading is executed by equally dividing all the picture elements so as to magnetically record the picture by dividing a single picture into the plural tracks of the conventional standard of a magnetic tape being the recording medium. On the other hand, after storing information for the plural tracks corresponding to a single picture in the memory for display 4, the pictures of high picture quality for the portion of the plural tracks are assembled as a single picture through a display processing part 15 and displayed on a display monitor part 14.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to magnetic recording of high pixel screens.
The present invention relates to a reproducing apparatus, and is particularly useful when it is used for recording / reproducing image information having a higher number of pixels than an image corresponding to an NTSC television signal.

[0002]

2. Description of the Related Art Signals used in conventional general-purpose home VTRs, video cameras, etc. conform to NTSC television signals and have 525 scanning lines.

[0003]

In the prior art as described above, the image quality is determined based on the number of scanning lines.
That is, even if an image pickup device having a larger number of pixels than the conventional one is used, improvement in image quality cannot be expected so far unless the overall specifications of the recording system are changed.

On the other hand, in recent years, there has been a strong demand for magnetically recording a screen having a higher image quality than a reproduction screen of television broadcasting. For example, in a video tape recorder (VTR), when trying to magnetically record a high pixel screen of 1024 vertical and horizontal, for example, a TV system with 525 scanning lines cannot record, and the recently developed scanning line is 1125.
Book of high definition television (HDTV) systems are needed.

However, the HDTV system is bulky and costs too much. Further, if the number of scanning lines is 1125 or more, it cannot be recorded even in HDTV.

Considering recording using a rotary drum such as a VTR, 8.06 MHz is required to obtain a resolution of 1024 dots with a horizontal scanning line of 1H = 15.75 KHz. In order to secure the band of 8.06 MHz, the recording wavelength is 0.7 μm and the frequency of the carrier is 10 MHz in FM recording.
If set to z, a relative speed of 7 m / sec is required.

On the other hand, one vertical scanning period (1V) is 1/15
In order to perform seamless recording as (sec), half-rotation is 1/15 (sec) with the two-head drum, so the drum rotation speed is 450 rpm. Therefore, the diameter of the drum in this case is 29.5 cm, which is too large to be put to practical use.

In view of the above-mentioned prior art, it is an object of the present invention to provide a magnetic recording / reproducing apparatus for a high pixel screen capable of magnetically recording a high pixel screen even with a small diameter drum.

[0009]

[Means for Solving the Problems] First to achieve the above object
According to another aspect of the present invention, a high-pixel image information is temporarily stored, a storage means for reading the image information and sending it to a magnetic recording system, and a magnetic recording for magnetically recording the image information sent by the storage means on a recording medium. System and 1 sent by the storage means
It is characterized by having a screen corresponding to a plurality of tracks of the recording medium, and having a control means for controlling the storage means so as to read out by dividing into one track of the recording medium.

A second aspect of the present invention is a high pixel screen reproducing apparatus in which image information corresponding to one screen is magnetically recorded by dividing the recording medium into a plurality of tracks, and an image recorded on the recording medium. A magnetic reproduction system that magnetically reproduces information,
Storage means for temporarily storing image information which is an output signal of the magnetic reproduction system, and image information for a plurality of tracks stored in the storage means are assembled into one screen so that the display means displays the screen. And a control means for controlling the storage means.

[0011]

According to the first aspect of the invention, the high pixel image information is divided into a plurality of tracks on the recording medium and recorded.

According to the second aspect of the invention, the image information divided and recorded on a plurality of tracks can be assembled as one piece of high-quality image information, so that one screen of high quality can be reproduced on the display means. it can.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings. In the present embodiment, a magnetic recording / reproducing apparatus for a high pixel screen is realized by an integrated video camera having a recording / reproducing system having the same specifications as the case of recording / reproducing a video signal according to the NTSC system.

As shown in FIG. 1, the image pickup device 1 takes an image of a normal NTSC system integrated video camera for converting an image formed through an optical system 2 such as a lens into image information which is an electric signal. It is an image pickup device having a higher number of pixels than the number of pixels of the device (CCD). The storage means comprises a buffer memory 3 and a display memory 4. The buffer memory 3 temporarily stores image information obtained by converting the output signal of the image pickup device 1 into a digital signal by the A / D converter 6 based on the synchronization signal generated by the synchronization signal generator 5. . Display memory 4
Is A / based on the sync signal generated by the sync signal generator 5.
The contents stored in the buffer memory 3 are read and stored in synchronization with the digitization of image information in the D converter 6.

The operation panel 7 is provided with operation switches for selecting various functions of the integrated video camera, that is, a recording switch for selecting a recording mode and a reproduction switch for selecting a reproduction mode. Yes,
A mode signal indicating the mode selected by each operation switch is sent to the system controller 8.

The system controller 8 is responsible for overall control of the integrated video camera. That is, the system controller 8 controls the buffer memory 3 and the display memory 4 as well as the magnetic recording / reproducing system.

More specifically, all of the pixels of the image information corresponding to one image stored in the display memory 4 are read out, and in this reading, the one image is a recording medium. All pixels are equally divided so that magnetic recording is performed by dividing the magnetic tape into a plurality of tracks of the existing standard.

The magnetic recording / reproducing system 9 is not different from the existing one, and the magnetic recording / reproducing mechanical deck 10, the magnetic recording / reproducing processing section 11, the recording / reproducing servo section 12 and D are used.
The A / A / D conversion unit 13 is provided.

The magnetic recording / reproducing mechanical deck 10 comprises a rotary drum to which a magnetic head is attached, a tape drive system such as a capstan roll, a mechanism portion for ejecting and loading a magnetic tape, and the like, which drives a rotary drum motor and the like. The unit is controlled by the recording / reproducing servo unit 12 so as to operate in a predetermined manner.

The magnetic recording / reproducing processing unit 11 is D / A / A /
The analog signal output from the D conversion unit 13 is FM-modulated and supplied to the magnetic head, and at the same time, F read by the magnetic head is read.
This is a part that performs predetermined signal processing such as demodulating the M signal.

The display monitor section 14 is a section for reproducing the image information read by the magnetic head as a screen. That is, the image information that has been reproduced by the magnetic recording / reproduction processing unit 11 and demodulated as an analog signal is D / A / A / D.
The digital signal is converted by the conversion unit 13 and stored in the display memory 4, but after the information for a plurality of tracks corresponding to one screen is stored in the display memory 4, the plurality of tracks are transmitted via the display processing unit 15. A high-quality screen for one minute is assembled and displayed on the display monitor unit 14 as one screen.

In this case, the reproduced image can be printed out by the printing device 16 or transmitted by the transmission device 17.

The system controller 8 also controls the display memory 4 during reproduction as described above.

In the above embodiment, when the recording mode is selected by operating the recording switch of the operation panel 7, the image information stored in the display memory 4 corresponding to the number of pixels of the image pickup device 1 is divided into a plurality of tracks. Will be recorded.

FIG. 2 is an explanatory view conceptually showing the recording signal at this time. As shown in the figure, this example is a case of dividing into 8 tracks, and as shown in FIG. 3, 128 scanning lines are allocated per track, and 1 scanning is performed with 1024 scanning lines.
This is a case of forming a screen.

Thus, at the time of reproduction, information recorded separately on a plurality of tracks is assembled to reproduce a high quality screen.

Although the above embodiment is realized by an integrated video camera, it is not limited to this. Just as there are no special restrictions on the source of high pixel image information,
The high pixel image information is temporarily stored in the storage means, divided into a plurality of pieces, and one track is magnetically recorded for each divided image information, and at the time of reproduction, one piece of image information of a plurality of tracks is assembled. Anything can be used as long as it is adapted to reproduce the screen.

[0028]

As described above in detail with reference to the embodiments, according to the present invention, the image information corresponding to one screen is divided into a plurality of pieces, which are allocated to a plurality of tracks of the recording medium and recorded. Therefore, high-quality image information can be magnetically recorded / reproduced by a small-diameter drum, that is, a small-sized device.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is an explanatory view conceptually showing a recording signal in the above embodiment.

FIG. 3 is an explanatory view conceptually showing a recording screen in the above embodiment.

[Explanation of symbols]

 1 image sensor 3 buffer memory 4 display memory 7 operation panel 8 system controller 9 magnetic recording / reproducing system

Claims (2)

[Claims] 1. A storage means for temporarily storing high-pixel image information, reading the image information and sending it to a magnetic recording system, and a magnetic means for magnetically recording the image information sent by the storage means on a recording medium. Control for controlling a recording system and one screen sent by the storage means so as to correspond to a plurality of tracks of the recording medium, and to control the storage means so that the recording medium is divided into one track and read. And a magnetic recording device for a high pixel screen. 2. A reproducing apparatus for a high pixel screen when image information corresponding to one screen is magnetically recorded by dividing the recording medium into a plurality of tracks, and a magnetic field for magnetically reproducing the image information recorded on the recording medium. A reproducing system, storage means for temporarily storing image information which is an output signal of the magnetic reproducing system, and image information for a plurality of tracks stored in the storage means
A magnetic reproducing apparatus for a high-pixel screen, comprising: a control means for controlling the storage means so that the display means displays the screen after being assembled on a single screen.