JPH07327189A - Video information recording tape and its recording and reproducing device - Google Patents

Abstract

PURPOSE:To reproduce and output a video information signal to be selected as a video image desired of making a hard copy on a tape efficiently. CONSTITUTION:A selected video signal such as a track number being address information with respect to a tape position and date and time stored in a sub code area 3 of a 5th frame (F5) or the like is recorded on a tape header 4 on a tape 1. The recording is implemented by reproducing the tape 1, controlling a 1st switch 17 every time a video image whose print is desired appears, reading data from a sub code corresponding to the video image, storing the data tentatively in a memory 16, and writing a content in the memory 16 to the tape header 4 after the tape is rewound by the operation of a 2nd switch 18 after the end of selection. In the case of reproduction, the selected video image is sequentially reproduced according to the address information of the tape header 4 and printed out by a video printer or the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention makes it easy to selectively extract each video information signal recorded on a tape, such as a hard copy (print) of the extracted video information signal. The present invention relates to a tape on which information is recorded so that processing can be performed collectively and a recording / reproducing apparatus for the tape.

[0002]

2. Description of the Related Art In recent years, movie cameras (hereinafter simply referred to as "movies") that can easily capture moving images and still images have become widespread, and the signal recording system has been further advanced from the conventional analog recording system to improve the image quality. A digital recording method was proposed,
Development towards commercialization is also in progress. This type of movie records video information and audio information on a magnetic tape housed in a cassette via a magnetic head. In the digital recording system, further, as information related to video / audio, for example, whether it is a moving image. Information such as a still image identification code, recorded date / time, shooting conditions, text data, etc. is recorded at the same time. This magnetic tape (hereinafter, simply abbreviated as a tape) is read by a reproducing device and reproduced as a visible image on a CRT or the like. There is a demand for a hard copy of each frame of the reproduced moving image or still image that is liked by a video printer or the like. Even with this hard copy method, the print time is as long as 60 to 80 seconds per sheet, so each time a playback image that you want to print appears, that image signal is output to the video printer and a hard copy (hereinafter referred to as print The counter, time code, etc. indicating the location where the image to be printed is recorded is stored in the memory such as the microcomputer as the address of the image one after another, and after tape playback, it is collected based on the stored address. It is required to be able to print all at once. However, the method of storing addresses in a memory such as the microcomputer described above and performing batch printing has a problem that the contents of the memory are lost when the power is turned off. In addition, JP-A-4-312
In 084, it is stated that the print marker is recorded on a part of the recording track at the same time as the video signal.
In this method, if the batch printing is performed later by relying on the print marker, even an undesired image will be printed. Further, there is a problem that it is not possible even if it is desired to perform a batch print including an image for which a print marker is not recorded.

In order to solve this problem, in a tape of a digital recording system, in an area for recording information corresponding to a video signal (hereinafter referred to as a subcode area or simply abbreviated as a subcode), images to be collectively printed later at the time of reproduction are provided. A method of additionally recording print marker information each time it appears has been considered and studied. When you want to print all at once, the image playback device performs a subcode search from the beginning of the tape, plays back the specified video signal each time the print marker information in the subcode is detected, and outputs that video signal. Printing is performed by a printer or the like.

A conventional example of a tape on which a print marker of this type is recorded and a recording / reproducing apparatus for recording / reproducing the print marker will be described below with reference to FIGS. 4 and 5.

FIG. 4 shows a schematic diagram of a conventional tape format. In FIG. 4, 101 is a schematic diagram of a tape in which video and audio are recorded in a digital recording format. The left side of the figure is the beginning of the tape, and the divided area 2 is recorded with digitized video and audio for each frame. The divided area 3 is information (subcode data) relating to each video / audio, for example, TAG code such as index, time code, track number,
This is a subcode area in which an identification code for a moving image or a still image, recorded date / time, shooting condition, text data, etc. is recorded.

In the video signal recorded on the tape 101, for example, the fifth frame (F5), the ninth frame (F9), and the fourteenth frame (F
14) and the reproduction video of the 18th frame (F18) are collectively and automatically printed, the corresponding subcode 3
A print marker is recorded in addition to the subcode data described above in the (subcode area indicated by the diagonal lines above each video / audio track 2 in the figure).

Usually, the data of subcode 3 is recorded at the same time as the video and audio, but the print marker for batch automatic printing is additionally recorded in subcode 3 later while watching the reproduced video.

Next, the operation of the recording device when recording the print marker will be described. Figure 5 shows tape 1 at that time
10 is a flowchart showing the movement of 01. First, the tape 101 is reproduced, and when a reproduced image to be printed appears, the time code in the subcode 3 corresponding to the image is stored in the memory of the microcomputer which temporarily controls the system, and the tape 101
To the still state. In subcode area 3,
The time code, date / time, and track number are preferentially arranged so that they can be read accurately in slow / still as well as in normal playback, but other data can only be read correctly during normal playback. ing. For this reason, the next step is an operation of reading the content of the subcode data that has already been recorded when the print marker is recorded and temporarily saving it. The tape 101 is rewound from the still state in the reverse direction by a distance that stabilizes the running of the tape 101 at the reading point, and after passing through the still state, the tape 101 runs at the normal speed in the forward direction.
When the time code position previously stored in the memory is reached, the entire contents of the subcode area are read and stored in the memory of the microcomputer. The next step is an operation for additionally recording the print marker. First, the tape 101 is rewound in the reverse direction to a distance where the traveling of the tape 101 can be stabilized at the writing point, and after passing through the still state, the tape 101 is traveling in the forward direction at the normal speed. . When the writing point, that is, the track position where the video signal to be printed is recorded, is changed to subcode data obtained by adding a print marker to the previously stored contents, and the corresponding subcode area is rewritten. This series of operations is repeated every time an image to be printed appears, and the tape 101 shown in FIG. 4 is created.

When batch automatic printing is performed, the tape 101 is played back by a playback device connected to a video printer or the like, and when a print marker is present in the subcode area 3, the tape 101 is stopped and the corresponding video signal is stopped. The still picture is reproduced and output to the video printer.
In still playback with the digital recording method, the video signal captured in the image memory in the normal playback state is repeatedly output, so the trajectory of the playback head and the track trajectory during still playback differ from those of the conventional analog recording method. There is no noise generated by. Therefore, a still image with the same high image quality as in normal reproduction can be obtained in still reproduction.

[0010]

However, the system including the tape on which the print marker is recorded and the recording / reproducing apparatus has the following problems. (1) The recording of the print marker is performed for each reproduced image, and the writing time is, as shown in FIG. 5, the operation time t for saving the already recorded subcode data.
1 and print marker writing operation time t2 are required. This time actually takes about 7 to 8 seconds because the mechanism operates to change the tape running direction. The fact that this time is required for each image for which the print marker is to be recorded is very troublesome as the number of images increases, and a system with poor usability is provided. (2) Considering the case where the print marker is to be erased in reverse, such as after the printing is completed, the user cannot immediately recognize the marked position, and one tape is played back to the end to print mark position. You can understand it only after reading all. Further, even if the mark position is known, in order to erase each while keeping other subcode data stored, perform the same operation as the recording shown in FIG. 5 for each image for which the print marker is to be erased. become. Therefore, erasing the print marker is a very time-consuming and inconvenient system. (3) When performing batch printing, even if the marked video exists only near the beginning of the tape, it is necessary to play back to the end of the tape. The longer the tape, the more time and power is wasted. It is a system that does.

In order to solve the above problems, the present invention has an object to provide a system capable of efficiently reproducing a selected video signal on a tape and efficiently canceling the selection. And

[0012]

In order to achieve the above-mentioned object, a first aspect of the present invention is a tape on which at least a video information signal is recorded, in which a selected area of the video information signal of the selected video information signal is recorded. It is a video information recording tape in which address information regarding a tape position of a field or a frame is collectively recorded.

A second aspect of the present invention is a means for reproducing a tape on which a video information signal is recorded, and a reproduction for deciding whether or not the reproduced video of each video information signal is selectively reproduced later and outputted when the tape is reproduced. Video selection means, storage means for storing address information relating to the tape position where the video information signal selected by the reproduction video selection means is recorded, and recording for recording the contents of the storage means or a part thereof in a predetermined area of the tape It is a recording device having means.

According to a third aspect of the present invention, each tape is moved / stopped based on address information relating to the tape position of each selected video information signal recorded in a predetermined area of the tape on which the video information signal is recorded. It is a reproducing device having a reproduction output means for reproducing and outputting an information signal.

[0015]

With the above-described structure, the present invention collectively writes the address information relating to the tape position of the selected video information signal in a predetermined area of the tape, and at the time of reproduction, simply refers to the information written in the predetermined area. It is possible to identify the selected video information signal.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings.

FIG. 1A is a schematic diagram of a tape recorded in a format according to the first embodiment of the present invention. 1 is a tape, 2 and 3 are video and audio recorded in the same format as the conventional example. An area and a subcode area, and 4 is a tape header in which address information of each selected video signal on the tape is recorded. FIG. 2 shows an example of address information recorded in the tape header 4. Each data is stored in a data pack unit consisting of 5 bytes as shown in the figure, and each data pack (hereinafter simply referred to as a pack). 1 byte at the beginning of the pack is assigned to a header indicating the data content of the pack. In this embodiment, as the address information of each selected video signal, the head track number (Tr) recorded in the sub code area 3 is recorded.
k No) and date / time are used. The track number is represented by a 24-bit binary code and is pack 5
In addition, the date is expressed in BCD code for both the day and the month, and is in pack 6,
The time is also represented by a BCD code like the date and stored in the pack 6 as shown in FIG. These three packs are prepared for each selected video signal.

By the way, when recording is made on the tape 1 where signal discontinuities (unrecorded portions) are formed, the continuity of track numbers is not guaranteed and the same track number may exist on a plurality of tapes 1. Therefore, it becomes impossible to uniquely select the video signal. Therefore, in the present invention,
In addition to the track number as the address information, the date and time are used to improve the accuracy of identifying the selected video signal.

In this embodiment, the track number is used to reduce the number of bits of the data stored in the tape header 4, but the same purpose can be achieved by using a known time code. It is also possible to introduce the concept of a frame number that indicates the number of frames of the video signal from the tape head position, but this is considered to be included in the time code that counts the number of frames.

Next, a recording / reproducing apparatus for recording and reproducing the above-mentioned address information on the tape header 4 according to the second and third inventions will be described with reference to FIGS. 1 (b) and 3.

FIG. 1 (b) is a block diagram of an embodiment of the recording / reproducing apparatus of the present invention, in which 8 is a processing for converting an input video signal from analog to digital and further for adding compression / error correction code. A recording signal processing circuit for applying the data, 15 is a microcomputer for processing data to be recorded in the subcode area 3 and the tape header 4, 9 is output from the recording signal processing circuit 8 and subcode data output from the microcomputer 15 to the tape 1. A modulation circuit for converting into a data string to be recorded, 10 is a recording / amplifying circuit for applying a current to the magnetic head 11 according to the output of the modulation circuit 9, 11 is a magnetic head for reading and writing signals on the tape 1, and 12 is a tape. A reproduction amplifier circuit for amplifying the reproduction signal on 1 to a sufficient level capable of signal processing, and 13 for the output signal of the reproduction amplifier circuit 12 to be read by the reproduction signal processing circuit 14 and the microcomputer 15. Demodulation circuit for demodulating the that data sequence, 1
4 is a reproduction signal processing circuit which corrects or corrects an error generated in the video information signal obtained from the demodulation circuit 13 and then expands the compressed data, and further outputs as an analog video signal, 16 is a selected video A memory for storing address information of signals, 17 is a first switch for selecting a video signal, 18 is a second switch for giving a trigger for recording the contents of the memory 16 in the tape header 4, and 19 is a command from the microcomputer 15. It is a tape running control circuit for controlling the running mode of the tape 1. FIG. 3 is a memory map diagram of the address information stored in the memory 16, and the address information is stored in the order in which the video signal is selected in the ascending order of the addresses of the memory 16.

Now, in the video signal recorded on the tape 1 as shown in FIG.
Description will be made assuming that the reproduced images of the frame (F5), the ninth frame (F9), the fourteenth frame (F14), and the eighteenth frame (F18) are selected for, for example, batch automatic printing.

The tape 1 is controlled by the tape running control circuit 19.
When the video signal (F5) of the fifth frame to be printed appears, the tape running control circuit 19 is controlled by the user to perform still playback of the video. Next, when the first switch 17 is operated, the microcomputer 15 reads the track number, the date (month / day) / time (hour / minute) from the sub-code data reproduced through the reproduction / amplification circuit 12 and the demodulation circuit 13, and FIG. The data is stored in the memory 16 as shown in FIG. The top 8 of the F5 track numbers are in the address [0000] of the memory 16.
Bits, the middle (medium) 8 bits are stored in the address [0001], and the lower 8 bits are stored in the address [0002].
Next, the month data is stored at addresses [0003] and [0004], and the day data is stored at addresses [0005] [0006].
At the addresses [0007] and [0008], hour data, [00
Minute data is stored in each of addresses 09] [000A]. When this operation ends, the tape running control circuit 1
9, the tape 1 is run, and when the video signal (F9) of the ninth frame to be printed next appears, the same operation as described above is repeated, and the contents of the memory 16 are updated as shown in FIG. When the operation described above is repeated and selection of the video signals on the tape 1 is completed and the second switch 18 is operated, the microcomputer 15 causes the tape running control circuit 19 to operate.
After the tape 1 is rewound to the head position via the, the tape 1 is run at a steady speed in the forward direction from the head position. at the same time,
Address information of each selected video signal is sequentially read out from the memory 16, the data is reformatted into the pack format of FIG. 2, and the tape header area on the tape 1 is passed through the modulation circuit 9, the recording amplification circuit 10 and the head 11. To record.

Next, the operation of the reproducing apparatus for reproducing the tape 1 recorded by the recording apparatus as described above and outputting the selected video signal corresponding to the address information recorded in the tape header 4 will be described.

In a mode in which a video signal selected according to the contents of the tape header 4 is output, the microcomputer 15 reproduces the tape 1 from the beginning via the tape running control circuit 19, contrary to the recording operation. The contents written in the header 4 are used for the head 11, the reproduction amplification circuit 12, and the demodulation circuit 13.
All are read out through the memory and each address information is stored in the memory 16. When this storing operation is completed, the microcomputer 15 fast-forwards the tape 1 through the tape running control circuit 19 to the first target address position according to the address information of the memory 16, and when it reaches the target position, shifts to the still operation and the selected image. Still playback is performed. At this time, the reproduced video signal is output to the video printer or the like connected through the head 11, the reproduction amplification circuit 12, the demodulation circuit 13, and the reproduction signal processing circuit 14. After the elapse of the print time in the video printer, the microcomputer 15 operates the tape running control circuit 19 to move to the next target address position and repeats the same operation as above. By repeating such operation,
The selected video signals recorded on the tape header 4 are sequentially and automatically output.

As described above, according to this embodiment, the following effects can be obtained. (1) Since the video signals to be output (printed) later are selected and the addresses (print markers) of those video signals are collectively recorded at the head position of the tape, the marker recording time can be significantly shortened compared to the conventional case. (2) To erase the address of the selected video signal, or to rewrite the address information of one part, only the tape header needs to be operated. When erasing or rewriting the marker, rewriting the subcode or the entire tape roll Since it does not involve the operation of reproducing, the time can be greatly shortened compared to the conventional case. (3) It is possible to refer to the address of the selected video signal in one tape winding simply by reproducing the tape header. (4) When outputting only selected images such as batch printing,
It is not always necessary to play to the end of the tape.

By the way, in the present embodiment, the images desired to be collectively printed are selected and the address information thereof is recorded on the tape header. However, as another application of the present invention, the images recorded on the tape are selectively image-communicated. Of course, it can also be used when it is desired to send it through the device.

[0028]

As is apparent from the above description, the address information relating to the tape position of the selected video information signal is collectively written in a predetermined area of the tape, and the information written in the predetermined area is referred to during reproduction. As a result, it is possible to provide a system capable of efficiently reproducing and outputting the selected video signal on the tape, and also capable of efficiently canceling the selection, so that the effect is great.

[Brief description of drawings]

FIG. 1A is a schematic diagram of a tape format in an embodiment of the present invention. FIG. 1B is a block diagram of an embodiment of a recording / reproducing apparatus of the present invention.

FIG. 2 is a data array diagram of a tape header portion in the embodiment.

FIG. 3 is an explanatory view showing contents of a memory in the embodiment.

FIG. 4 is a schematic diagram of a conventional tape format.

FIG. 5 is a flowchart showing the operation of a conventional recording device.

[Explanation of symbols]

 1 tape 2 video / audio area 3 subcode area 4 tape header 5 data pack 6 data pack 7 data pack 15 microcomputer 16 memory 17 first switch 18 second switch

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Internal reference number FI Technical indication location H04N 5/7826 5/91 9/79 H04N 9/79 H 8224-5D G11B 27/28 A

Claims (10)

[Claims] 1. A tape on which at least a video information signal is recorded, wherein address information relating to a tape position of a field or frame of each selected video information signal is collectively recorded in a predetermined area of the tape. Video information recording tape characterized by. 2. The video information recording tape according to claim 1, wherein the selected field or frame of each video signal is a field or frame of a video information signal to be hard copied (printed). 3. The video information recording tape according to claim 1, wherein address information regarding a tape position of a field or frame of each selected video information is recorded at a substantially head position of the tape. 4. A means for reproducing a tape on which a video information signal is recorded, and a reproduction video selecting means for deciding whether or not the reproduction video of each video information signal is selectively reproduced later and outputted. Storage means for storing address information relating to the tape position where the video information signal selected by the reproduction video selection means is recorded, and recording means for recording the contents of the storage means or a part thereof in a predetermined area of the tape A recording device characterized by having. 5. The recording apparatus according to claim 4, wherein each video information signal selected by the reproduction video selection means is a video information signal to be hard-copied (printed) later. 6. The recording apparatus according to claim 4, wherein the storage means stores the time code recorded on the tape as the address information regarding the tape position. 7. The recording apparatus according to claim 4, wherein the storage means stores a track number indicating the number of recording tracks from the beginning of the tape recorded on the tape as address information regarding the tape position. . 8. The recording apparatus according to claim 4, wherein the storage means stores the date / time information and the time code or the track number recorded on the tape as the address information regarding the tape position. 9. The video information signal is recorded on a predetermined area of the tape on which the video information signal is recorded, and the tape is moved / stopped based on the address information about the tape position of each selected video information signal. A reproducing apparatus having a reproducing output means for reproducing and outputting. 10. The reproducing apparatus according to claim 9, wherein each of the selected video signals is a video signal to be hard copied (printed).