JP2694944B2 - Video signal recording system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Background of the invention>   Videotape including recording and / or playback unit
Many different recording methods are used in the device
Are known, but each videotape has one
It is designed to be used only in. That
The tape recorded on one device to another device
Is not possible, so between devices with different recording methods
Are not compatible. If you need high quality performance
Would consume large amounts of tape and require complex signal processing circuits.
You must use the required recording format.
This becomes a load in a portable recording device. However
To promote the compactness of portable recording devices
Reduces tape consumption and reduces the number of circuits
And simplifying the recording format reduces performance.
The result occurs.   Digital TV system ranking (layer: Ha
It was proposed to use using this method
Achieves the high quality performance required for studio equipment.
Higher data rate equipment is used to
Lower data in order to get compact in a bull device
A rate device is used. TV signal Y, I, Q
Speaking of such ranking for ingredients, high
For devices with high data rates, add the above components 4: 2:
Sampling at a ratio of 2 to lower data rate equipment
The above ingredients were sampled in a ratio of 2: 2: 1 respectively.
To run. For example, the method I'm currently thinking about is level 4
Using a sampling frequency of 13.5MHz equivalent to
2 and 1 are 6.75MHz and 3.375 respectively
Represents a frequency of MHz. According to such ranking
Larger between studio recorders and portable recorders
Flexibility, but with high data rate
Storage format and individual recording formats for low data rate devices.
The tape recorded on one device cannot be recorded on the other device directly.
It is easily exchangeable in that it cannot be regenerated.
I can't do it. A recording format of a certain method
In order to convert to other format recording format, there is
Recorded information sampled by level rank is played back,
Converted to another level of rank, re-recorded, and
Must be sent via the studio. <Outline of the invention>   The invention for video tape recording and reproducing apparatus of the invention
In a dual recording format, the tape has multiple longitudinal sections.
Segmented vertically into a
Assigned to the tracks whose star information is recorded in fractional resolution.
Have been. This may result in different data rates or recording
Use the Omatto as a recording device for studios and portable recording.
It can be used according to various characteristics of a device such as a recording device.
Can be. <Description of the preferred embodiment>   A preferred embodiment of the present invention will be described below with reference to the drawings.
Will be explained.   In digital video tape recording and playback equipment,
The recorded information is usually the information that should be displayed during the raster.
Each screen (that is, the TV
Field or frame)
You. It is more compact and more portable in portable devices.
In order to emphasize quality in the studio equipment,
Multiplexed for digital video tape recording and playback equipment
The recording format is applied. This multiple recording
-For mats, the tape is longitudinally divided into several longitudinal segments.
Each segment is divided into multiple longitudinal directions
Quotient divided by the number of tape segments (tape segment
Fraction fractional pixel solution
It is assigned to record all raster information in resolution.
You. Initially, the video is pixilated at some predetermined frequency.
Digitized in pixels (pixels or samples). this
These pixels are either composite or component video information
Related. Each pixel is through a Transuser
Sent to one specific track in the longitudinal segment
You. Such a track is used for each track along the tape running direction.
Sometimes it is placed in the
In some cases, they are placed in a direction that crosses the direction at an angle.
You.   A preferred embodiment of the multiple recording format according to the present invention.
An example is shown in FIG. This is video Y, I
And the Q component is recorded. In Figure 1, an example
For example, longitudinal tracks 8 and 9 including voice and que
According to the fixed transducer head 310 of FIG.
Then, the tape 5 is scanned. 1 Lath for Y, I, Q components
As shown in Fig. 2, it is 4: 2: 2 for each scan line.
Sampled at the normal ratio of. In addition, tape 5
Is just divided into two longitudinal segments 6 and 7
All raster information is displayed in half length resolution in each longitudinal direction.
Recorded in the loop segment. Therefore, two
Y track, 1 I track, and 1 Q track
Are located in the four track sections of each longitudinal segment.
Have been. And each of these tracks is a helical
The pattern is scanned across the running direction of the tape. No.
As shown in Fig. 3, each track in the 4 track category is
Raster driven by motor 312 and drive 314
Each different trans-user Y on Sukiana 300₁, Y_Two, Y_Three, Y
_Four, I₁, I_Two, Q₁, Q_TwoAre simultaneously scanned. tape
Is a drive machine that includes a capstan 316 of known construction to those skilled in the art.
Is sent across the surface of the head wheel 300
You. In Fig. 3, the transducer is located under tape 5.
So they are shown as discontinuous or dotted lines
Should be, but for the sake of clarity the figure is small
It is shown as a continuous line. In Figure 3, the taper of about 270 °
The winding state is shown. However, substantially
Any winding, including 360 ° omega (Ω) winding
Corners can be used. In addition, each 4 track categories
Is a field or field known to those skilled in the art.
Information about the rame can be included. Video information
Track Y for all raster scan lines₁Is Y pixel
Tracks 1, 5, 9, 13 etc., including track Y_TwoIs the Y pixel
Track Y including 2, 6, 10, 14 etc._ThreeIs Y pixel 3,
Track Y including 7, 11, 15 etc._FourIs Y pixel 4, 8,
Track I, including 12 and 16 etc.₁Are I pixels 1, 3, 5,
Track 7 including 7 etc._TwoIs I pixel 2, 4, 6, 8 etc.
Including track Q₁Includes Q pixels 1, 3, 5, 7, etc.
Mi, Truck Q_TwoIncludes Q pixels 2, 4, 6, 8, etc.
With this recording format, compactness and portability
In the case of a recording unit for studios where bandability is not so important
Is the video information on both longitudinal segments of the tape
Is recorded in all resolutions, and compactness and portability are important.
For portable recording units, video information is
At half resolution on only one longitudinal segment of the
Can be recorded.   1/2 resolution on separate longitudinal tape segments
In order to record video information in the Y, I, Q components are the first
Configure in many ways other than those described above for figures
be able to. For example, only for odd-numbered raster scan lines
Related video information is one longitudinal tape segment
On the other hand, while the
Video information is recorded on the other longitudinal tape segment.
Will be recorded. Also related only to odd fields
Video information recorded on one longitudinal tape segment
On the other hand, the bidet associated only with the even field
Information is recorded on the other longitudinal tape segment
You. In addition, "Interleaved recording frames for digital video
Omatto (Interleaved Recording Format for Digit
al Video) ”, patented on July 12, 1983.
Invention shown in U.S. Pat. No. 4,393,414
The concept is that each of the different longitudinal tape segments of FIG.
Interface shown in FIG. 1 of the above-mentioned US patent.
Record each of the Reve-Checkerboard pixel patterns
To utilize with the concept of the invention.
Can be.   As described earlier with reference to Figure 3, on the rotary scanner.
Is the Y that forms the helical pattern in Fig. 1.₁, Y_Two, Y_Three,
Y_Four, I₁, I_Two, Q₁And Q_TwoTran for each of the tracks
It is easy to understand that there are
Like. The Y, I and Q component pixels are
Fig. 4 shows the configuration for leading to each of the above transducers.
Is shown in The specific recording format selected is
Any number of tots assigned to each of the Y, I and Q components
Since it is possible to have a rack, this configuration is shown in FIG.
2: 2 record format, limited number of different tracks
Both general conditions that are not described are described.
The pixel of each signal component has Q, I and Y components, respectively.
To the individual switches 10, 12 and 14 relating to.
Switches 10, 12, 14 are shown as mechanical switches
However, the equivalent electronic switch is actually used.
Will be easily understood. Each switch is assigned to its signal component.
A number of outputs equal to the number of format tracks applied.
It has a force input position. Each from switch 10, 12, 14
The output is recorded through one of the transducers shown in Fig. 3.
The track on the recording medium is guided in a known manner. Switch
Input positions of 10, 12, and 14 are modular counter 1 respectively
Individually controlled by output counts of 6, 18, and 20.
Each modulo counter 16, 18 and 20 has
Assigned to the signal component of switch 10, 12 or 14
Has a number of count outputs equal to the number of format tracks
And also requires the properties of the particular format selected
Has a programmable start count output when
You. In the recording format of Fig. 1, the Q and I components are
4 track segments of each longitudinal tape segment
Only one track of each
The module counters 16 and 18 are
A flip-flop can be used in the construction.
Each module counter 16, 18, 20 has its switch 10,
Pixel rate of the signal component 12 or 14 is related
Driven by the clock. As an example, rank "4"
A clock representing the frequency (13.5 MHz) corresponding to the level of
The clock 22 is directly connected to this to drive the module counter 20.
Supplied directly. Clock 22 is divided by 2 units (you can divide by 2
Nit) 24, module 16 and module counter
To generate the level "2" frequency needed to drive
You. Module counter 20 is programmable start counting type
It is of the formula. Horizontal synchronization signal is each module counter
It is fed to the starting counting inputs of 16, 18, 20 and thereby each
A raster scan line record starts at the first Y pixel in the line.
Be started. Each switch 10, 12 or 14 has its own
Separate for each count output of the Yuro counter 16, 18 or 20
Set to the track position of the
And Q component pixels are individual longitudinal tape segments
Guided by those directed tracks inside. Specific notes
A recording format for reproducing the materialized form of the format.
The etching configuration essentially records its format.
Is the reverse of the specific switching configuration chosen for
Therefore, such a switching structure for reproduction simplifies the figure.
Not shown to do. As a result,
Playback switching configuration is tape compared to itching configuration
.Truck and module counter to transceiver
Each of the Y, I and Q component pixels supplied via the
A separate switch for receiving each
Each switch is controlled to reconstruct a bad playback signal.
Of course, the module counter is similar to that shown in FIG.
The horizontal sync signal and clocking configuration in various ways.
It may be driven.   Of course, the playback unit of the device is
Either resolution or 1/2 resolution memory format
It is also possible to reproduce video information as a display signal from
Wear. The playback unit is in reverse order. The reverse function of the recording unit.
For a person skilled in the art,
It is clear that the format is fine. Follow
The playback unit in the playback unit is a tape.
All bidets from the truck in the longitudinal segment of
E Pick up information, process it in a well-known manner, and display it.
Pull out the indicator signal. According to the present invention, the reproduction unit
One longitudinal segment of tape in the same way
Can play a half-resolution format from
You. In this case, the image obtained from the display signal is
Even if the quality is not good for most studios, examples
For example, ENG (Electronic News Gathering)
Satisfied with the use of edit). However,
In the concept of Tal video ranking, for example, US patents
Interpolation techniques such as those shown in No. 4,041,453
Using well known error compensation or concealment techniques such as
A low quality signal is converted to a high quality signal.
You. Therefore, a quality display suitable for most studios
When extracting the signal, 1/2 the resolution of the video information is processed.
In addition to the concealment device,
Re-ranking transcoders as part of
It can be installed in a raw unit. Rank like this
Another method of attachment transcoder is issued in October 1981.
“A Simple Fami” on pages 956-959 of the SMPTE Journal.
ly of Digital Filters For A Binary Hierarchy (binary
The name of a simple digital filter for a hierarchy "
In the paper by John P. Rossi
It is shown.   Using the portable unit, one of the tapes in Fig. 1
On one longitudinal segment, which is arranged facing one side
Recording video information at only 1/2 the resolution of the tape
The other longitudinal segment arranged facing the other side
Is left blank. Adequate tape and decks
The function of the portable recording unit
Blank of tape deck to enhance the physical characteristics
Partly in another preferred embodiment of the invention shown in FIG.
Will record video information at half the resolution. Tape
While running over its entire length, the tape in this example
Each longitudinal segment of the recording or playback of
And the longitudinal section is placed facing one side of the tape.
The tape after it has been recorded or replayed
Is "flipped" and placed facing the other side of the tape
Record video information in the longitudinal segment
Then play. Therefore, each longitudinal segment of FIG.
The trucks running the tapes run the tapes in different directions.
You. However, tape decks are a further
As in other embodiments, each of its longitudinal segments
When recording video information and then playing video information
It is rewound between and when it
The track in the opposite segment runs the tape in the same direction.
You. Furthermore, for the sake of explanation, the recording format of FIG.
The component video information is shown, with half the resolution of the composite video.
Deo information may be recorded in substantially the same format
Is played.   As shown in FIG. 5, the recording format of the present invention is
Since the example relates only to partial raster resolution,
The number of transcoders on the canna
A device of the recording and playback system that only works with mats.
Can be reduced. An example of such a device is
Tabble recording unit and electronic news editing (ENG) tele
There is a vision recording device, and in such a device the fifth
Scanana for recording or playing the format in the figure
Is shown in FIG. Recording or playback mode
During each period, to each of the trans-users on Sukiana,
Or Y, I and Q components from each of the transducers
In order to derive the minute pixel, the scan described earlier in connection with FIG.
An itching configuration can also be used.   Only a little in the multiple recording format of Figs. 1 and 5.
Contains only two longitudinal tape segments
But within the basic concept of the invention, more
Such segments can also be included in other formats. each
Another way on skiana to pull out the seed formate
You can also arrange the transducers with. Also,
Different information for each format like this
Can be arranged by the law. Within the scope of this invention
Some examples of other formats are shown in FIGS. 7 and 8.
I have. In the figure, only one possible tape is wound on the scan
The array of trans-users on the scan
Shown against Ohmat. In the format of Figure 7C,
Tandem Transducer pair A, B and C, D
Placed in one position around the scanana as shown in Figure 7A.
These are about half of their length as shown in Figure 7B.
Axial separated by a distance equal to the length of the minute. Each tan
Dem vs Trans Transducer skies over 346 °
Longitudinal tape segment that wraps around Yana
The trucks inside are separated. With each rotation of Sukiyana
About each tandem transducer pair
Track A placed in the tape segment and
Longitudinal track segment with B, and other
Track C located in longitudinal tape segment
And longitudinal track segment tiger with D
Scan the desk. In the format of Figure 8C, the tandem trans
Sujuusa vs. AB and C, D are the first on the perimeter of Scyana
Are located in the tandem transge
User pairs E, F and G, H are first as shown in Figure 8A.
Placed in a second position on the circumference of the scanana 180 ° from
Is placed. Tandem Tran, as shown in Figure 8B.
Sujuusa vs A and B are tandem transjusa
About half the axial length of C and D in the axial direction of the scanner
Located distant from each other, while the Tandem Trang
Sujuusa vs E and F are tandem transjusa
About 1/2 of the axial length of G and H in the axial direction of the scanner
It's just a distance away. Tandem Transgyu
The source pairs E and F should be shown as dotted lines, but they are small
Therefore, the figure is shown by a solid line for easy understanding. each
Tandem vs Transgyusa skies over 180 °
Two longitudinal segments on the tape around the Yana
Track each. As shown in Figure 8C, each skier
Tandem transformer during the first 180 ° of Na's rotation
Deuser AB is first a lower longitudinal tape segment
Scan the trucks A and B, then the tandem tiger
The source CD is the upper longitudinal tape segment.
Scan tracks C and D. Next, the rotation of each scan
During the later 180 ° period, the tandem transfuser EF
The tracks E and F of the lower longitudinal tape segment
Scan, then tandem Transducer GH up
Scan tracks G, H on the longitudinal tape segment
I do.   The recording format of the present invention is a recording apparatus shown in FIG.
Ordinary recording and / or playback devices such as the playback device shown in FIG.
It can also be used for playback devices. These devices
Can both have any desired number of channels
Yes, but for the sake of explanation, there are two truck channels 1
Take 2 and 2.   In the recording device shown in FIG. 9, the video signal is digitized.
Y, I and Q components are described in US Pat. No. 4,393,414
Pixels constructed according to the configuration of FIG. 10 described in
-Supplied to each input of the formater 20.   Formatter 20 Y clock is 13.5MHz
However, the I and Q clocks are 6.75 MHz. In description
For each input of the formatter 20, an 8-bit parallel format
Ivy is used. Hardware structure shown in FIG.
4 tigers led to each longitudinal tape segment
Y, I and Y in a recording device with a Tsuk Channel
Pixel formater with each input for each of the Q and Q components
Acts as a data. However, the recording device of FIG.
The Y component supplied to one input and the Y component supplied to the other input.
Have only two inputs with both I and Q components
You should understand that. In such a device,
The multiplex circuit in the cell formatter is necessary.
Gives the ace ace standard. Pixel Formatter 20
Predetermined Y and / or I and / or Q pixels
Tape run in each track channel
It is distributed to the inspection format 22. 13.5MHz at input
Clock, horizontal and vertical sync, vertical field partial
No. V / 5 or V / 6 (in the 525 television system)
5 rotations / field, and 625 TV channels
Adapted to 6 turns / field respectively
Data) at the output) and output
Rate (11.8MHz) clock for each tape scan format 22
Supplied, the formatter 22 is a digital video
Appropriate “Blank” for recorder / recorder control and synchronization information.
Convert video rate to tape data rate with "" left
It works like that. For convenience of explanation, all such
The control signal is supplied only to the track channel 2
, But these signals are
It should be understood that it is also supplied to Nell 1. Skilled person
Video data rate (11.8MH
z) Clock is video information rate + digital sync rate + parite
A horizontal and vertical sync redundancy (reset
Dandange) is then removed. Pixel combination
Is incorrect from the scan format 22 in each track channel.
Difference detection and correction (EDAC) / Parity insertion unit 24
Supplied, this unit 24 will not
Computer redundancy to fix or detect
And thus explain some of the VDTR overheads.
I do. Pixel combination is EDAC / Parity insertion unit 2
Supplied to control passing 4. Then each
In the track channel, the combination of pixels is EDAC /
Send from Parity insertion unit to Fratta Buffer 26
The buffer 26 is associated with the recorded video information.
The time axis error (TBE) in the structure of the recording device
Adjust or correct. As is well known to those skilled in the art,
・ Buffer 26 has enough memory to fit TBE
Contains. This memory is synchronized with the input video
The data rate (11.8MHz) clock that controls the input
Mechanical ratio (11.8MH)
z) and the clock. Then the pixel combination
The parallel format of the
Converted to mats. This converter 28 controls its input.
The mechanical rate clock supplied directly to control
X8 unit as recording rate clock to control force
And a clock supplied via 29. Pixel set
The preamble and sync insertion unit is converted from the converter 28.
Supplied to the Nit 30. This preamble and sync insert
Input unit 30 starts scanning information and blocks per line.
Set up both of the digital syncs that occupy some number of
Works like Pixel combinations are preambles and
Recorded to control passage through the sync insert unit 30
Rate clock is supplied. Pixel union of each channel
Set the track from the preamble and sync unit 30
This Truck Jiang sent to the Channel Coda 32
Nell Coder 32 is the tape recording code that should be used.
Accordingly, organize (organize) raw digital information.
It works like that. Information is Track Channel Co
A recording rate clock to control what is sent through the DA 32
Is supplied. Then this information in each channel is
From the coder 32 through the normal recording amplifier 34
It is supplied to the sensor switching unit 36. This trans
The switching unit 36 has a rotating head in the tape transporter 38.
A position signal is supplied from the eel. Some transges
User (scan only tracks A, E, C, G in Figure 8C)
The same as the four tandem transducer pairs in Figure 8B.
Like four single transducers in the same position
Tape) is placed on the head wheel and tape
The head wheel in the transporter 38 is rotated around an appropriate angle and sent.
Placed on a headwheel to guide information to the tape
Have been. Servo reference signal is timing unit 40
Is supplied to the transfer device 38. Timing unit 40
Provides video sync signal and head wheel position signal
All clock signals, sync signals and
A vertical field partial signal is provided.   As mentioned above, the playback device reverses the reverse function of the recording device.
It is done in order. Therefore, with the playback device in FIG.
Moves around the head wheel in the tape transfer device 50.
The recorded information on the tape is recorded on the head wheel
Several trans-users installed (recording device of Fig. 9
(4 pieces same as in the above)
Will be Transducer switching unit 52 uses this information
A playback amplifier 54 in the track channels 1 and 2
Distribute to. The position signal is switched from the head wheel to the unit.
To 52. Each amplifier 54 is a track channel
Extracts raw digital information from the information inside, and
Trats that act to generate the desired mechanical ratio clock
Supply to Ku Channel Decoder 56. Each track
Raw digital information in the channel (serial format still
(In the form of a box) is supplied to the pre-angle and coaxial extractor 58.
Scanning start information and digital synchronization information supplied here
Are removed. Information is passed through the preamble and sync extractor.
Supplied by a mechanical rate clock to control the sending of information
Is done. For each channel, the converter 60 has a serial bit
Receives the low and sends the serial format to 8 bit parallel format.
Convert to a combination of MAT pixels. Clock rate clock
Is fed directly to the converter 60 and also divided by 8 units 61
After that, it is supplied as a reproduction rate (11.8MHz) clock. each
The combination of pixels in the channel is converted by converter 60.
It will be supplied to the rata buffer 62. Fratta Bathua
62 is a reproduction device related to the video information that is being reproduced.
Adjust and correct all time axis errors (TBE) in the mechanism
You. This is due to the playback rate (11.8MHz) clock.
Video data rate by introducing a combination of
(11.8MHz) Clock output
You. Also, the difference signal from the time comparator 64 is
It is supplied to each of the far 62. Added to adjusting TBE
By the way, Fratta Bathua 62 is between Track and Channel.
Adjust any timing or mechanical error caused by
Responsive to the above difference signal as a programmable delay device
You. Sync signal from each pre-angle and sync extractor 58
Is fed to the time comparator 64, which picks up the difference signal.
Used for. Of the pixels in each track channel
The combination is from the flatter buffer 62 to the EDAC unit 66.
Be paid. The EDAC unit 66 rectifies and detects correctable errors.
It operates to announce the possible error. ED
Controls sending pixel combinations through AC Unit 66
A clock of data rate is provided to do this. Each trat
The combination of pixels in the Q channel is from EDAC66.
Scan Deformer, or Tape Scan Defometer 68
To another passage, for example by using an additional bit
Sent with a detectable error flag that is passed through
You. The defometer 68 uses an overhead "blank"
Eliminate and convert tape rate to video rate. In the input
Data rate clock, horizontal and vertical sync signals, vertical
Yield partial signal V / 5 or V / 6, and 1 at output
A control signal including a 3.5MHz clock is provided to each differential amplifier 68.
Supplied. Picks from Def Omata in each channel
Cell combination is detectable again sent through another passage
Supplied to the Pixel Def Omata 70 with a capable flag
It is. The Def Omata 70 is controlled by a 13.5MHz clock.
Of pixels from both Truck Channels
Works to collect combinations, and also Y, I and Q pics
The cell is passed through individual error concealment means 72 for individual video output.
Send to force. For this, for example for composite pixel recording
U.S. Pat. No. 4,376,455.
That is available for recording composite pixels
It is done using the techniques shown. Def Omata
Detectable error flags between 70 and each hiding means 72
Is sent through another passage, and the 13.5MHz clock
Controls the advance of pixels through each concealment means 72.
The servo reference signal is transferred from the timing unit 74 to the tape.
Sent to the transmitter 50, and the mechanical rate clock and track
Reproduction rate extracted from the channel decoder 56 (11.8MH
z) Clocks, sync signals and feedbacks except clocks
Field partial signal is also vertical sync and head wheel position.
It is derived from the timing unit 74 to which the signal is supplied.
You. The Pixel Def Omata 70 is installed in the recording device of FIG.
The same hardware as the Pixel Formatter 20
The switch in it is a large number of inputs from Def Omata 68.
Connected with single output, led to power and video output
I have.   Fig. 11 shows progressive scanning television signals on a magnetic tape.
Shows a multi-segment recording format for recording
ing. The format is a progressive scanning television signal.
Non-interlaced video lines 1, 2, 3 ... n in each frame
, A and B before recording in different longitudinal segments
Separated into interlaced fields. Temporally adjacent
A non-interlaced video line recording sequence
By reversing each frame, you can
The signal is interlaced in each longitudinal segment.
The recorded television signal with the
To be converted. Have this interlaced field
The TV signal is the original non-interlaced TV signal.
Image scene (picture scene) included in the
The whole image, i.e. full area, top and bottom, left and
And right. Accordingly, each longitudinal segment of FIG.
In the recorded interlaced television signal,
Reams are recorded in adjacent helical tracks.
Two interlaced fields A and B recorded
Become. In this case, Field A is non-interlaced
Extracted from the first frame of the revision signal,
Field B is subtracted from the second neighboring frame that is temporally adjacent.
Will be issued. For example, field A is odd numbered lines 1, 3,
5 ... n ... 593, 595 ... (where n is an odd number)
Yield B is an even numbered line 2, 4, 6, ... N + 1, ... 594, 5
Including 96 ... Recorded pics in each longitudinal segment
Cell resolution is, for example, the pixel resolution of the original image scene
It is a fraction of 1/2 or less.   Figure 12 is constructed according to the format shown in Figure 11.
Used to record or play recorded magnetic tape
A recording / reproducing apparatus that implements the features of the present invention
Indicates 120. For example, in the recording operation mode,
Source video signal V_PSIs supplied to the terminal 130. Video
Issue V_PSGenerated by a progressive scan camera device in the usual way
Image at a frame repetition rate of 50 frames per second, for example.
Emit 625 non-interlaced video lines per image frame
Let it live. Therefore, non-interlaced video signal V_PSof
The total number of video lines per frame is PAL video
Equal to the total number of video lines in a frame of lines. However
While video signal V_PSIs non-interlaced, so
Frame rate f_VIs twice that of the PAL system, and the linear rate is
Is 2f_HAnd this is also twice the linear rate of the PAL system.   Video signal V_PSIs in analog or digital form
, Either black and white signals or color signals
It can be either, if there is a color signal there is a composite format
It may be in any form. Furthermore, the video signal V
_PSIs a component form,
Its component is a single chamfer as in the MAC format.
Which is time-multiplexed with the channel, or
Can be component forms in separate channels,
Separate transformers for each longitudinal segment.
The juicer is similar to the structure of the skyana shown in Fig. 3.
Assigned to each of the Y, I and Q component signals in the configuration
You. If the video signal V_PSAre separate channel component forms
In the case of, the processing stage shown in Fig. 12 is duplicated with each component channel.
Made.   In the recording mode of the recording / reproducing apparatus 120 shown in FIG.
/ Play switch RP₁And RP_TwoArm of each recording terminal R
In contact. Non-interlaced video signal V_PSHa sui
It is supplied to the terminal 128 via the switch.   FIG. 13 (A) is the same as that relating to the odd line number n in FIG.
A non-interline starting with any video line number n that is the same line number.
Race video signal V_PSSequence of video line numbers for
Is shown. Video signal V_PSIs non-interlaced
And the duration of a given video line is 1 / 2f_HIt is.   Non-interlaced video signal V_PSIs the clock shown in Figure 12.
Signal 2f_H, CK is clocked in the manner of Modulo 3 by CK
Single pole, 3-throw switch S₁Is supplied to the pole (movable arm) of
You. In this case, 2f_H, CK clock rate is 2f_Hbe equivalent to.
FIG. 13 (A) shows a video signal V generated at the terminal 128._PSThe bidet
Based on the number of lines, Modulo 3 Switch S₁Arm of
A_rShows the connection position and duration of the. Therefore, for example
For example, when video line n appears on terminal 128, arm A_rIs terminal D
₁And video line n + 1 appears at terminal 128,
Arm A_rIs terminal D_TwoAnd the video line n + 2 to terminal 128
When it appears, Arm A_rIs terminal D_ThreeContact with. This contact
-Chins reiterates based on Mojiro 3.   Contact D₁To D_ThreeIs memory M₁To M_ThreeAttached to each first end of
Each memory to a predetermined desired pixel resolution
Therefore, it has a memory capacity to store the line equivalent of pixels.
ing. Memory M₁To M_ThreeThe other end of
Arm A_p, And arm A connected to pole Q_q2 poles including
Itchi S_TwoEach contact C₁To C_ThreeIs joined to. Switch
S_TwoArm is supplied by timing unit 122
Clock signal f_H, In the form of Modulo 3 by CK
Rotate counterclockwise.   Double pole, double throw switch S_ThreeSwitch S_TwoIs connected to the pole P of
R pole R and switch S_TwoWith a pole S connected to the pole Q of
You. Switch S_ThreeThe arm of the clock f_VNon-according to CK
Interlaced video signal V_PSAt the frame rate of
Circulate between the contact position shown by the line and the contact position shown by the dotted line.
You. Thus, for example, a non-interlaced video signal V_PS
During the period when the video line of frame 1 of
S_ThreeArm is in the contact position shown by the solid line and
In arm 2, the arm is in the contact position shown by its dotted line.
Therefore, during frame 1, switch S_ThreeContact terminal B₁
Video signal V generated at₁Switch S_TwoOccurs at pole P of
Video signal V_PEqual to the contact terminal B_TwoVideo signal that occurs in
Issue V_TwoSwitch S_TwoVideo signal V generated at pole Q of_qEqual to
No. In the opposite position, during the next frame 2 the same
Maintain a relationship.   Memory M₁To M_ThreeAs first-in first-out (FIFO) memory
It is configured. Each memory has a specific internal memory read
/ Input / output operation based on write clocking configuration
Can pass signals in either direction with respect to
You. For example, each memory has a memory coupled to each end of each delay line.
Readout function and writing by means of the ruplexer steering stage
Two that can be operated like a ping-pong with the built-in function
Of parallel delay lines. Recording mode of the device shown in FIG.
Then, each terminal D₁To D_ThreeMemory M bound to₁To M_ThreeEdge of
Part acts as a signal input and each terminal C₁To C_ThreeIs bound to
The other end of the memory serves as a memory output.   Memory M₁To M_ThreeTo write signal samples to
MING UNIT 122 is a memory M₁Write to clock WR₁,
Supply CK, memory M_TwoWrite to clock WR_TwoSupply CK
And memory M_ThreeWrite to clock WR_Three, CK supply. Me
Mori M₁To M_ThreeTo read the signal sample from
Memory Unit 122 is a memory M₁Read to clock R₁, CK
Supply the memory M_TwoRead to clock R_Two, CK,
Memory M_ThreeRead to clock R_Three, CK supply. Terminal 128
Non-interlaced video signal V_PSIs a recording operation
In mode, supplied to the timing unit 122,
Non-interlaced generation of write and read clocks
Video signal V_PSVideo lines 1, 2, 3 ... n ... Sequences
2f_H, CK signal, f_H, CK signal, and f_V,
The frequency and phase of the CK signal can be changed to non-interlaced video signals.
Issue V_PSSame as the horizontal and vertical blanking periods associated with
Make it happen.   Figures 13 (C) to (E) show non-interlaced video signals.
Issue V_PSMemory M as a function of video frequency in₁To M_Threeof
It shows the contents. Video signal V_PSLine n of terminal 128 and
Contact D₁Switch S in₁Arm A_r, Then line n
Is memory M₁Is written to. Arm A_rIs the contact terminal D_Twoand
D_ThreeOf the next two non-interlaced lines
Meanwhile, line n is memory M₁I am staying at. Video signal V_PSof
When line n + 1 appears at terminal 128, arm A_rIs the contact end
Child D_TwoAnd the line n + 1 depends on each of its write clocks.
Memory M₁Is written to. Arm A_rAre sequentially contact terminals D_ThreeAnd
And D₁Note between the next two non-interlaced lines when
It remains in the middle. Video signal V_PSLine n + 2 is terminal 1
Arm A when appearing at 28_rIs the contact terminal D_ThreeAt line n
+2 is a memory M depending on each writing clock._ThreeWritten in
It is. Arm A_rAre sequentially contact terminals D₁And D_TwoWhen
Line n + 2 is the memory M between the next two non-interlaced lines_ThreeTo
It stays. Arm A_rIs the contact terminal D₁When
Tsuchi S₁Mojiro 3 cycling again.   Arm A_pAnd A_qSwitch S_TwoContact point C₁To C_ThreeTurning between
Memory M in relation to rolling₁To M_ThreeSignal stored in
Are sequentially read from the memory. Read rate from each memory
Is half the write rate, and the capacity of one line of memory is
As shown in FIGS. 13 (F) and (G), each arm A_pAnd
And A_qIs each contact terminal C₁To C_ThreeA period equal to 1 / f_H
Read in.   Memory M₁To M_Three13 (F) in synchronous reading of
Through (I), arm A_pIs the contact terminal C₁In
Arm A_qIs the contact terminal C_TwoMemory M₁Remember
Line n and memory M_TwoThe line n + 1 stored in
These are read by each read clock. Proper reading
Read the stored lines n and n + 1 in order to perform
Contact C to₁And C_TwoThe time in Fig. 13 (A)
Non-interlaced video signal V_PSLines n + 2 and n +
3 will occur while appearing at terminal 128 in sequence.
Periodization is performed.   Switch S_TwoIn the arm position in the next sequence of
Mu A_pIs the contact terminal C_ThreeLocated on Arm A_qIs the contact terminal C₁In
You. At this contact position, the stored line n + 2 is stored in the memory M_Three
The line n + 3 read from and stored in M₁Read from
You. Switch S_TwoThe contact position in the final sequence of
Arm A during the operation cycle of Yuro 3_pIs the contact terminal C_TwoIn
Arm A_qIs the contact terminal C_ThreeIt is in. That is why
The line n + 4 shown is the memory M_TwoLines read and stored from
n + 5 is memory M_ThreeRead from.   Switch S as described above₁Or S_ThreeAnd memory M₁To M_Three
As a result of the synchronous operation of the non-interlaced video signal V_PSIs
Two separated interlaced video signals V₁And V_Two
Is converted to Non-interlaced video signal V_PSThe frame
In frame 1, interlaced video signal V₁Of the frame
Interlaced, including odd numbered lines or field A
・ Video signal V_TwoIs an even numbered line, ie field B
including. Non-interlaced video signal V_PSFrame 2
For the switch S_ThreeThe arm of the
Interlaced video signal V when in contact position₁Is
Interlaced video signal, including Yield B video line
Issue V_TwoIncludes field A line.   Interlaced video signal V₁Is the recording / playback electronic circuit stage
Video signal V supplied to 126_TwoIs the recording / playback electronic circuit stage 1
27, both operating in record mode,
Source video signal V_i1And interlaced video signal V
_i2Occurs. Video signal V_i1And V_i2Each skiyan
・ Sukiyana equipment consisting of trans-users 123 and 124
Figure 11 shows each longitudinal segment of the magnetic tape.
Properly conditioned to be recorded at 1 and 2.   The structure of the scanning device 129 is shown in FIG.
Is similar in structure to the lower level transducer.
Y₁, Y_Three, I₁, Q₁Shows the trans-user 123 and the
The upper level transducer Y_Two, Y_Four,
I_Two, Q_TwoIs associated with transgenerator stage 124. Love
The angle at which the tape wraps around the Yana device 129 is about 360 °
Equivalent to the winding angle of, and the omega (Ω) winding shown in Fig. 3
Or with an alpha (α) winding configuration
It may be a full 360 ° wrap angle.   The timing element 122 and the scanner and cap of FIG.
Bidirectional control signals to and from the Stan Servo Control Stage 125
Distributed. This skiana and capstan sa
The servo control stage 125 is associated with the scanner device 129 in a conventional manner.
Key and head wheel control track pulse
Control recording and playback. The track is the 11th
Not shown in the figure. Also used in FIG.
Even though all the other voice tracks are omitted.
You.   Non-interlaced data recorded on the magnetic tape of Fig. 11
Video signal V_PSRecording / playback of Fig. 12 to play back
Device 120 is a switch RP₁And RP_TwoArm of each playback terminal P
It operates in playback mode by touching B. S
Transducer stages 123 and 124 of the CAN unit 129
The studs are each of their respective longitudinal segments 1 and 2
The signal during the recording track of the
Generate a signal that flows from device 129 to terminal 128. This signal
Flow is described when the recording / playback device is in recording mode.
It is essentially the opposite of the signal flow. Switch in playback mode
Tsuchi S₁Or S_ThreeAnd memory M₁To M_ThreeThe synchronized behavior of
Since it is substantially the same as the case of the recording mode described in
The description of the operation is omitted.   Transducer stages 123 and 124
Interleaves sensed from longitudinal segment tracks
Source video signal V_i1And V_i2Is combined, terminal 128
Reconstructed non-interlaced video signal V appearing at
_PSOf non-interlaced sequential video lines are generated. Control stage
Control tracks and / or keys supplied by
Timing unit 12 according to you track information
Synchronous oscillator that receives vertical and horizontal timing information from 2
The non-interlace generated at the terminal 128 by the living instrument 121.
Vertical and horizontal sync components are inserted in the video signal. This
Including all horizontal and vertical sync information
Reconstructed non-interlaced video signal V_PSIs recorded
/ Generated on signal line 130 by regenerator 120. This place
Signal line 130, the signal line 130 has both longitudinal segments in FIG.
/ And output signal lines from two recorded tracks and
Become.   In order to play the recorded magnetic tape shown in FIG.
When using the table unit, for example,
One longitudinal segment, such as hand segment 1
A scanning device that can scan only trucks
A record / playback device may also be used. Portable re
The scanning device shown in Fig. 6 is used for the scanning device in the raw unit.
Skiana Transji, similar to Yana Transjiusa
Play only one longitudinal segment in the user
Fewer transducers than you need to
It is used. The playback unit is the interlace shown in Fig. 12.
・ Video signal V₁Emits an interlaced video signal such as
Live. This signal is fed directly to the sync generator for sync information.
Information is inserted, and an interlaced playback television signal is generated.
Is done. The interlaced playback television signal is the 11th
All tracks in both segments of the magnetic tape
Recorded non-interlace represented by the sum of the
.Representing the entire area of the image scene contained in the video signal
Includes interlaced video lines.   Therefore, this playback unit remembers the field.
Sequential scanning TV projector without using a large amount of memory
Interlaced Scanning Television from Jon Format
The advantage of being able to instantly convert to format
I have it. In return, the vertical resolution is
Half the pixel resolution of non-interlaced video signals
Therefore, one of the longitudinal segment of the magnetic tape in Fig. 11 is
Interlaced bidet obtained when playing only
The resolution of the signal becomes coarse.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing an embodiment of a multiple recording format according to the principle of the present invention, and FIG. 2 is a track of each longitudinal segment of a magnetic tape having the multiple recording format shown in FIG. FIG. 4 shows a sequence of Y, I and Q samples to be recorded in FIG. 3, FIG. 3 schematically shows a scanning device used for scanning a track by the multiple recording format shown in FIG. The figure shows Y, I, Q for each of the transducers in FIG.
FIG. 5 schematically shows an arrangement for deriving component pixels, FIG. 5 shows a multiple recording format according to the features of the invention adapted for use in a portable tape unit, and FIG. 6 shows the invention. Figure 7 schematically shows an array of transducers on a portable unit scanner adapted for use with a multi-record format according to the features of Figure 7A, and Figure 7A scans the track with a multi-record format shown in Figure 7C. Fig. 7B is a diagram showing the winding state of the tape in the case, Fig. 7B is a diagram showing the position of the transducer on the scanner when scanning the track by the multiple recording format shown in Fig. 7C, and Fig. 7C is the multiple recording format. Fig. 8A shows a track, and Fig. 8A shows a table for scanning a track by the multiple recording format shown in Fig. 8C. FIG. 8B is a diagram showing the winding state of the recording medium, FIG. 8B is a diagram showing the position of the transducer on the scanner when scanning the track by the multiple recording format shown in FIG. 8C, and FIG. 8C is another format by the multiple recording format. Figures 9 and 10 show a record and playback pixel enhancement device adapted for use with the record format of Figures 1, 5, 7C and 8C, respectively. FIG. 11 is a diagram showing another embodiment of the multiple recording format according to the features of the present invention, and FIG. 12 is a recording / reproducing system capable of recording and reproducing a television signal in accordance with the recording format shown in FIG. The device is shown in block diagram form, and FIGS. 13A to 13I are timing diagrams useful in explaining the operation of the device of FIG. 123,124 …… Transducer, 130 …… Input terminal,
_{S 1, S 2, S 3} ...... guiding means, 122 ...... control unit, 128 ...... line synchronization information appears terminals.

Claims (1)

(57) [Claims] In a system for recording a video signal on magnetic tape, the first transducer stage is arranged to record information on a plurality of helical tracks contained in a first tape segment of the two longitudinal tape segments. A plurality of longitudinal tape segments included in a second tape segment of the two longitudinal tape segments; a first transducer stage longitudinally dividing a width of the magnetic tape; A second transducer stage arranged to record information on a helical track of the input signal; an input terminal for receiving a video signal having a continuous video line for providing information about the scanned scene; Controlled in response to every other of the successive video lines Of information to the first transducer stage and
A video signal recording system, comprising: information supplying means for supplying information from the line sandwiched between every other of the continuous video lines to the second transducer stage. 2. The system of claim 1, wherein the continuous video line received at the input terminal is:
A non-interlaced video line of successive frames of a progressive scan television signal, wherein the information supply means comprises an odd line of every other frame of the progressive scan television signal and an odd line of every other frame of the progressive scan television signal. The even lines of the sandwiched frames are recorded on the first tape segment, and the even lines of the alternate frames and the odd lines of the frames sandwiched between the alternate frames are recorded. Are recorded on the second tape segment, so that the information obtained from one of the two tape segments is used for interlaced display of the scene, while the other of the two tape segments is recorded. The information obtained from Video signal recording system, which comprises using for the has been progressively scanned display.