JPH09198791A - Video signal processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system capable of easily processing the compressed video data of a digital VTR by an personal computer. SOLUTION: In this video signal recording device 10A, the compressed video data to be recorded in a magnetic tape 8 is taken out from a blocking processing section 4, and the blocked data is recorded in an external memory card 11 through a digital output section 9. In order to input this video data into a personal computer placed at the other place, the external memory card 11 is removed, and connected to a digital input section 12. This data is converted into video data from the blocked data by an operation processor 13, and displayed on a picture display device 14. Thus the compressed data of a digital VTR can be shared through the external memory card 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multimedia type video signal processing device capable of sharing compressed video data with a personal computer.

[0002]

2. Description of the Related Art In a home-use digital VTR, a video signal is digitized and highly efficient coded (hereinafter, simply referred to as compression) in order to reduce the consumption of tape and enable long-time video recording. To reduce the amount of data. For example, in a commercially available home-use digital VTR, the information amount of a video signal is compressed to about 1/5, and the compressed data amount is about 10 per frame.
It is 0 kByte.

On the other hand, in recent years, the performance of a personal computer (hereinafter referred to as a personal computer) has been greatly improved and the image data can be easily handled by improving the performance of a microprocessor and increasing the capacity of a memory, a hard disk, etc. by high density recording. It's starting to happen. As a result, it is desired that a personal computer and a digital VTR can be directly connected and video data can be shared.

By the way, when the video data of the VTR is to be taken into the personal computer, generally, the video signal is taken out from the video terminal of the VTR, A / D-converted by the video capture board of the personal computer, and compression processing is performed on the board. .
However, in the case of a digital VTR, already compressed video data exists in the VTR device, so a digital interface for extracting this may be provided and connected to a personal computer with a cable.

However, the digital interface of the VTR is only a digital interface mounted on a commercial VTR used at a broadcasting station, and it is technically and costly difficult to use it for home use. Therefore, if the serial port RS-232C, which is standardly installed in a personal computer, is also installed in the digital VTR as a digital interface of the digital VTR, the video data can be shared.

[0006]

However, in the above-mentioned data transmission or transfer by RS-232C, a cable must be connected between two devices each time. In addition, if the cable that is the transmission line becomes long, measures must be taken against noise errors that occur during transmission. Also, the transmission rate of RS-232C is at most several tens of kb.
Since it is as low as ps, it is difficult to transmit a large amount of video data in terms of transmission time.

Further, in terms of transmission time, it can be greatly improved by using a standard bus of a personal computer, so-called ISA or PCI bus, but in this case, it is necessary to remove the exterior panel and insert a dedicated card, which is convenient. It can be said that there is a big problem in terms of.

The present invention has been made in view of the above conventional problems, and an object of the present invention is to realize a video signal processing apparatus capable of easily sharing video data with a personal computer. .

[0009]

In order to solve the above-mentioned problems, the invention according to claim 1 is to provide a compressed data generating means for compressing a video signal to obtain compressed data, and the compressed data in a recording medium. In a video signal processing device having recording means for recording, digital data output means for taking out the compressed data of the compressed data generating means to the outside and recording the compressed data on a removable non-volatile external recording medium is provided. It is characterized by that.

The invention according to claim 2 is a compressed data generating means for compressing a video signal to obtain compressed data.
In a video signal processing device having a recording means for recording the compressed data on a recording medium, an arithmetic processing means for converting the compressed data of the compressed data generating means according to a desired transmission protocol, and the arithmetic processing means for converting the compressed data. It is characterized in that a digital data output means for taking out the compressed data to the outside and recording the compressed data on a removable non-volatile external recording medium is provided.

With such a configuration, in the video signal processing device, the internal compressed video data is recorded in the external removable external recording medium, the external recording medium is removed as necessary, and the same is connected to the personal computer having the same interface. By doing so, image processing can be performed reliably and easily on the personal computer.

According to a third aspect of the present invention, there is provided reproducing means for reproducing the compressed data of the video signal from the recording medium, and video signal decoding means for expanding the compressed data obtained by the reproducing means to decode the video signal. In a video signal processing device having the above, a digital data input means for reading the compressed data from a detachable external recording medium on which the compressed data of the video signal is recorded and supplying it to the video signal decoding means is provided. Is.

According to a fourth aspect of the present invention, there is provided reproducing means for reproducing the compressed data of the video signal from the recording medium, and video signal decoding means for expanding the compressed data obtained by the reproducing means to decode the video signal. In a video signal processing device having: a digital data input means for reading the compressed data from a detachable external recording medium on which the compressed data of the video signal is recorded; and the compressed data obtained by the digital data input means as desired. Arithmetic processing means for converting data according to a transmission protocol.

With such a configuration, the data processed by the image processing on the personal computer is recorded on the external recording medium according to the data format of the video signal processing device, and the recording medium is connected to the video signal processing device, so that it can be easily performed. The video processed externally can be reproduced.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) A video signal processing apparatus according to a first embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram showing the configuration of a video signal processing device according to this embodiment. The video signal processing device in this embodiment is a video signal recording device 10A that generates video data, a personal computer 15 that captures and displays video data, and an external recording medium for exchanging video data between these devices. It is configured by the external memory card 11.

The video signal recording device 10A includes a video signal input terminal 1, an A / D converter 2, a video signal compression unit 3, a block processing unit 4, a formatter 5, a recording amplifier 6, a recording head 7, and a magnetic tape 8. Is a digital VTR having
A digital output unit 9 is further provided in this VTR. The external memory cards 11 and 11 ′ are non-volatile memories that store video data, and use, for example, flash memories. The personal computer 15 is a signal processing device having a digital input unit 12, an arithmetic processing device 13, and an image display device 14. Here, the video signal compressing section 3 and the blocking processing section 4 constitute a compressed data generating means, and the formatter 5, recording amplifier 6 and recording head 7 constitute a recording means.

In such a configuration, when an analog video signal is input from the input terminal 1, the A / D converter 2 converts the video signal into a digital video signal. Then, the video signal compression unit 3 performs a data compression process on the digital video signal and supplies it to the block processing unit 4. The blocking processing unit 4 blocks the compressed data in a data arrangement as shown in FIG.

The data arrangement in FIG. 5 is HD Digital VCR Con.
"Specifications of Consumer-Use Dig" issued by ference
It is a part of the contents described in "ital VCRs using 6.3mm magnetic tape", and in the embodiments of the present invention, all the blocked data are based on this specification. One data block in FIG. (DIF block)
Is composed of 80 bytes. The data unit called 1 sector shown in FIG. 5 is composed of 150 DIF blocks, and
One frame is composed of 0 sectors. Therefore, the data size of one frame is 120 kbytes including additional information other than video.

As shown in the figure, the first block of the 150 DIF blocks is a header block H0 called a header section. The two blocks following this are subcode blocks SC0 and SC1. The three blocks that follow are video auxiliary blocks VA0-VA2. In the subsequent blocks, one audio block A and 15 video blocks V are alternately repeated.

Data of this format is normally input to the formatter 5 of FIG. 1 and converted into a signal suitable for recording. The recording code converted here is recorded on the magnetic tape 8 via the recording amplifier 6 and the recording head 7. On the other hand, the output end of the blocking processing unit 4 is also connected to the digital output unit 9 so that the blocked compressed video data is taken out to the outside.

In the present embodiment, the configuration of the digital output section 8 which is the digital data output means is in a format conforming to the PC card standard which is standardly installed in recent notebook personal computers and the like. PC card standard is P in the US
It is also called the CMCIA standard, JEIDA standard in Japan, and has a 68-pin connector. The compressed video data of a required frame still image is taken out through the digital output unit 9, and the compressed video data and the memory control signal are written in the external memory card 11 conforming to the PC card standard.

In this embodiment, as shown in FIG. 5, one frame of compressed data is composed of a video signal and other additional information, and its data size is 120 k as described above.
Bytes. Therefore, for example, if an 8 Mbyte flash memory card is used, 64 still images can be written.

An important point of the video signal processing apparatus of this embodiment is that the external memory card 11 in which the compressed video data is written in this way can be easily removed.
Therefore, the external memory card 11 in which desired video data is recorded can be connected to a device having a PC card standard interface, such as a notebook personal computer located at a place temporally and spatially separated. The external memory card 11 ′ thus moved offline is connected to the digital input unit 12 provided in the personal computer 15. The data from the digital input unit 12 is read out and controlled by the internal arithmetic processing unit 13. Then, the pre-installed software decompresses the compressed video data to restore the original video signal. This video signal is displayed as a still image on the image display device 14.

As described above, the compressed video data can be easily shared between the VTR and the personal computer by simply storing the compressed video data in the portable external memory card 11 and connecting the data to a device such as a personal computer. be able to.
Further, an advantage of this embodiment is that a data error due to the conventional connection of a cable or the like is unlikely to occur.

(Second Embodiment) Next, a video signal processing apparatus according to a second embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a block diagram showing the configuration of the video signal processing device in the present embodiment. The same parts as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. Here, the video signal processing device is a video signal recording device 10B that generates video data, a personal computer 15 that captures and displays video data, and an external storage medium that is an external recording medium for exchanging video data between these devices. The device 17 is used.

The present embodiment differs from the first embodiment in that an arithmetic processing unit 16 is added to the video signal recording apparatus 10B and that an external storage device 17 is used instead of the external memory card. is there. Since the normal operation of the digital VTR is the same as that of the first embodiment, its explanation is omitted.

In FIG. 2, when the compressed video data output from the block processing unit 4 is provided to the personal computer 15, the compressed video data is sent to the digital output unit 9 through the arithmetic processing unit 16. Here, the arithmetic processing unit 16 is added in order to output the compressed video data to the digital output unit 9 according to a certain transmission protocol, and corresponds to a block for executing various driver software in a personal computer. Also in the present embodiment, the digital output section 9 is configured in a format conforming to the PC card standard. Therefore, the external storage device 17 is set to P
It uses a C card standard SCSI interface hard disk. Therefore, in the arithmetic processing unit 16, the SCSI
Outputs compressed video data with a protocol according to the interface. In this case, since the recording capacity of the hard disk, which is the external storage device 17, has reached several hundred times that of the memory card described above, it is possible to record a moving image.

As another transmission interface described above,
Parallel transmission protocols such as IDE, which are often used for hard disk interfaces, and IEEE
It goes without saying that the 1394 standard serial transmission can be used. As the external storage device 17, an optical disk or a magneto-optical disk can be used in the same manner as a hard disk. Needless to say, similarly to the first embodiment, the external storage device 17 can be temporarily removed and connected to another personal computer to share compressed video data.

(Third Embodiment) Next, a video signal processing apparatus according to a third embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a block diagram showing the configuration of the video signal processing device in this embodiment. The video signal processing device here is a video signal reproducing device 28 for reproducing video data.
A, the external memory card 11 in which video data is recorded.

The video signal reproducing device 28A includes the magnetic tape 1
8, a reproduction head 19, a reproduction amplifier 20, a deformatter 21, a switch 22, a deblocking processing unit 23, a video signal expansion unit 24, a D / A converter 25, a video signal output terminal 26, and a digital input unit 27. It consists of. Here, the reproducing head 19, the reproducing amplifier 20, and the deformatter 21 constitute a reproducing means, and the deblocking processing section 23, the video signal expanding section 24 and the D / A converter 25 constitute a video signal decoding means.

In the video signal reproducing apparatus 28A having such a structure, when the normal reproducing operation is performed, the video signal recorded on the magnetic tape 18 is reproduced by the reproducing head 1.
Play at 9. The reproduction amplifier 20 amplifies the reproduction signal to a level sufficient for signal processing. Next, the deformatter 21 demodulates the recording code and converts it into block-compressed video data. The switch 22 switches between inputting this block data and inputting block data from the external memory card 11 ′, and supplies it to the deblocking processing unit 23. The deblocking processing unit 23 extracts compressed video data from the input block data. Then, the video signal expansion unit 24 expands the compressed video data to restore the original video data. The D / A converter 25 converts the digital video data into an analog video signal, and outputs the output terminal 26.
Output to an external video monitor via.

On the other hand, the external memory card 11 'is an external memory card in which compressed video data is recorded by the video signal processing device of the first embodiment. The operation when this is connected to the digital input section 27 will be described below. In addition, also in the present embodiment, as in the first embodiment, the format of the digital input unit 27 is based on the PC card standard.

The switch 22 is switched to a digital input section 27 which is a digital data input means, and memory control and address signals are sent to the external memory card 11 'through the digital input section 27. Then, the contents of 11 'of the external memory card are read out in the recorded order. At this time, the compressed video data is input to the deblocking processing unit 23, and the video signal is output from the output terminal 26 through the same signal processing as described above.

With such a configuration and operation, not only can the external memory card described in the first embodiment be used by being connected to a personal computer, but it can also be connected to a video signal processing device having a reproducing function. Further, after the image is processed on the personal computer, the compressed video data compressed by the same process by the software is recorded in the external memory card, and this external memory card can be connected to the video signal reproducing device 28A to watch the video. Needless to say. Thus, by using the video signal processing devices of the first and third embodiments in combination, the memory card can be used freely and easily between the digital VTR and the personal computer. Therefore, when considering the future development of multimedia, its merits are enormous.

(Fourth Embodiment) Next, a video signal processing apparatus according to a fourth embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a block diagram showing the configuration of the video signal processing device in this embodiment. The video signal processing device here is a video signal reproducing device 28 for reproducing video data.
B, an external storage device 17 'storing video data.

As in the third embodiment, the video signal reproducing device 28B includes a magnetic tape 18, a reproducing head 19, a reproducing amplifier 20, a deformatter 21, a switch 22, a deblocking processing section 23, a video signal expanding section 24, D. / A converter 2
5, a video signal output terminal 26 and a digital input section 27, and in addition to this, an arithmetic processing unit 29 is provided. Also, unlike the third embodiment, the external memory card 1
An external storage device 17 'is connected instead of 1'.

Since the normal operation of the video signal reproducing device 28B as a digital VTR is the same as that of the third embodiment, it will be omitted. In the present embodiment, either the external storage device 17 'in which the compressed video data is recorded in the second embodiment or the external storage device 17' in which the video data image-processed in the same format on the personal computer is recorded. Are connected. In this case, from the video signal reproducing device 28B,
A transmission protocol for reading data is created by the arithmetic processing unit 29, and the video data of the external storage device 17 ′ is taken in via the digital input unit 27. The deblocking processing unit 23 decodes the block data input via the switch 22 and supplies the compressed video data to the video signal expansion unit 24.
After that, the video signal expansion unit 24 expands the compressed video data and gives it to the D / A converter 25. The D / A converter 25 converts the digital video signal into an analog video signal, and outputs the output terminal 2
It outputs to the external video monitor via 6.

With such a configuration and operation, not only can the external storage device (hard disk) recording the compressed video data in the second embodiment be connected to the personal computer, but it can also be connected to the video signal processing device having a reproducing function. it can.
Therefore, by using the video signal processing devices of the second and fourth embodiments in combination, a digital VTR can be obtained.
It becomes possible to share the hard disk freely and easily between PC and PC. And considering the future development of multimedia, its merit is very large.

Further, by incorporating an arithmetic processing unit in the video signal processing unit and changing a software program for controlling the arithmetic processing unit, a PC card compatible with various transmission protocols other than the hard disk having the SCSI interface described above. Compatible equipment, eg RS
It is also possible to support a 232C compatible modem card, a TCP / IP compatible Ethernet card, and the like.

Further, in the present embodiment, the configuration in which the compressed data is shared by using the external memory card or the hard disk as the recording medium has been described, but the method of directly connecting the video signal processing device and the personal computer may be used. In this case, when viewed from the personal computer, the video signal processing device is treated as one peripheral device like a printer.

In each of the embodiments, only the case of the PC card standard as the format of the digital input / output section has been described.
It goes without saying that the same effect can be obtained with a digital interface similar to this. Also, as digital data that can be handled, in addition to compressed video data,
It is obvious that the additional information data such as voice data and text data can be freely handled without limitation.

[0042]

As described above, by using the video signal processing device of the present invention in various combinations, it is possible to easily and reliably share compressed video data of a home digital VTR and personal computer data. You can Further, since it is not necessary to directly connect the digital VTR and the personal computer by using a cable and various kinds of video data can be exchanged with each other, the video signal processing device suitable for the multimedia age can be obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a video signal processing device according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a video signal processing device according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a video signal processing device according to a third embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of a video signal processing device according to a fourth embodiment of the present invention.

FIG. 5 is a block layout diagram of compressed data used in each embodiment of the present invention.

[Explanation of symbols]

 1 Input Terminal 2 A / D Converter 3 Video Signal Compressing Section 4 Blocking Processing Section 5 Formatter 6 Recording Amplifier 7 Recording Head 8, 18 Magnetic Tape 9 Digital Output Section 10A, 10B Video Signal Recording Device 11, 11 'External Memory Card 12, 27 Digital input unit 13, 29 Arithmetic processing device 14 Image display device 15 Personal computer 16 Arithmetic processing device 17, 17 'External storage device 19 Reproducing head 20 Reproducing amplifier 21 Deformer 22 Switch 23 Deblocking processing unit 24 Video signal expansion Part 25 D / A converter 26 Output terminal 28A, 28B Video signal reproducing device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshinori Kitamura 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (12)

[Claims] 1. A video signal processing apparatus comprising: a compressed data generation unit that compresses a video signal to obtain compressed data; and a recording unit that records the compressed data on a recording medium. A video signal processing device, comprising: digital data output means for taking out data to the outside and recording the compressed data on a detachable and non-volatile external recording medium. 2. A video signal processing apparatus comprising: a compressed data generating unit that compresses a video signal to obtain compressed data; and a recording unit that records the compressed data on a recording medium. Arithmetic processing means for converting the compressed data into data according to a desired transmission protocol, and digital data for taking out the compressed data converted by the arithmetic processing means to the outside and recording the compressed data in a removable non-volatile external recording medium. A video signal processing device comprising an output means. 3. A video signal processing device comprising: a reproducing means for reproducing compressed data of a video signal from a recording medium; and a video signal decoding means for expanding the compressed data obtained by the reproducing means to decode the video signal. A video signal processing device comprising: digital data input means for reading the compressed data from a removable external recording medium on which compressed data of the video signal is recorded and supplying the compressed data to the video signal decoding means. 4. A video signal processing device comprising: a reproducing means for reproducing compressed data of a video signal from a recording medium; and a video signal decoding means for expanding the compressed data obtained by the reproducing means to decode the video signal. A digital data input unit for reading the compressed data from a detachable external recording medium on which compressed data of a video signal is recorded; and an operation for converting the compressed data obtained by the digital data input unit according to a desired transmission protocol. A video signal processing device comprising: a processing means. 5. The video signal processing apparatus according to claim 1, wherein the digital data output means uses a PC card standard. 6. The video signal processing apparatus according to claim 3, wherein the digital data input means uses a PC card standard. 7. The video signal processing device according to claim 1, wherein the external recording medium is a non-volatile semiconductor memory. 8. The external recording medium is a hard disk, according to claim 2 or 4.
The video signal processing device according to the above. 9. The video signal processing device according to claim 2, wherein the external recording medium is an optical disc. 10. The video signal processing device according to claim 2, wherein the arithmetic processing device uses SCSI as a transmission protocol. 11. The video signal processing device according to claim 1, wherein the external recording medium records compressed data of a still image. 12. The external recording medium is for recording together compressed data of a video signal and auxiliary data accompanying the video signal, according to claim 1. Video signal processing device.