JP2608213B2 - Video signal processing system and its processing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates generally to apparatus and means for processing video signals organized into chromaticity and luminance signals, in particular video signals generally processed on videotape recorders. The separation channel in a videotape recorder relates to the fact that it is used to record chromaticity signals on magnetic tape.

[0002]

As is well known, the spectrum of a luminance (and synchronized) television signal consists of a DC component and a harmonic component of the horizontal scanning frequency, each component of the harmonic being a vertical component. It has clusters around the harmonic components of each of the components separated into scan ratios. Chromaticity information is generally transmitted in the spectral gap between these components. In an NTSC system, for example, two components of a chromaticity signal, a dynamic phase (I) and a quadrature (Q) signal, are each quadrature-modulated on a subcarrier, and the frequency of the subcarrier (3.579545MHz) is the generated color. The degree bands are selected to be separated by a spectral gap between the luminance spectra. In this way, the composite signal comprises interleaved luminance and chromaticity signals. The frequencies of the sub-carriers cause horizontal, vertical and temporal interleaving to minimize mutual interference generated from crosstalk between the luma and chromaticity signals.

[0003] In order to record on a magnetic tape in the same typical recording system as a video cassette recorder (VCR'S) used at home for recording television signals, a frequency which is a composite television signal is recorded. It is known to change a chromaticity signal previously located in the upper region of the spectral band to a spectral band below the luminance signal. Such modulation or down-conversion is commonly known in the recording art as a "color under" recording system. The moving image (I) and quadrature (Q) components of the chrominance signal in a color under system are also typically processed at other carrier frequencies that have evolved the chrominance signal (C) to display the scene.

[0004]

The well-known VHS system utilized in various VCRs, for example, did not provide the necessary horizontal resolution, so that, for example, properly received and processed broadcast television. The image quality is degraded as compared with the signal. The goal of television engineers was to find a way to transmit more information on a given bandwidth channel for an extended period of time. The ratio of frames and lines is progressively chosen by the standard, whereby bandwidth limitation typically causes a reduction in horizontal resolution. For example, the typical limited bandwidth of VHS systems, which is about 2.0 to 2.5 MHz, produces an image of inadequate horizontal resolution. Various techniques are well known for recording full bandwidth signals on media of the same limited bandwidth as magnetic tape. In this way, the August 1 invented by the inventor outside Controlle under the name of "improved video signal recording system".
U.S. Patent Application Serial No. 07 / 569,029, filed as No. 7,1990, and used for reference, and commonly assigned, shows such a system. Additionally, various prior patent applications and publications are discussed in Serial No. 07 / 569,029 of the aforementioned patent invented by other inventors outside of Strolle. For example, the same system disclosed in U.S. Pat. No. 4,834,463, published on Faraudja on May 16, 1989, requires format modification, and the tape recorded by that system is Causes undesired artifacts or defects in the video when played on VHS machines that are not standard-corrected.

It will be appreciated here that the spectrum of the chromaticity signal exhibits a spectral gap when it is used as a color under format.
In this way, the name “Color channel encoded with the auxiliary signal” was used as a reference for the Control.
Commonly assigned pending US patent application Ser. No. 07 / 531,070, invented by another inventor outside of e, discloses an apparatus for providing auxiliary signals in a method, such as digital automatic signals or motion signals. Are modulated on a phase alternating carrier which is then added to the modulated chromatic carrier and processed in the chromatic channel for recording on magnetic tape.

[0006]

SUMMARY OF THE INVENTION The present invention provides a predetermined luminance signal.
With a predetermined carrier modulated to the signal and chromaticity information
Signal processing for generating a predetermined television signal
In the system, the color of the television signal
First spectrum including a predetermined area around the carrier
A first filter means for selecting the Le region, the Terebiji
Termination of the first spectrum and low frequency of the
An intermediate region of the third spectral region that includes the spectrum
A second filter for selecting a second spectral region encompassing the region.
Filter means, and said third one of said television signals.
A third filter means for selecting the spectral region, the
FM for FM-modulating the signal selected by the third filter means
Modulating means and a signal modulated by the FM modulating means
A high-pass filter means for selecting a high-pass component from the
The second spectrum selected by the second filter means
A first signal for converting a signal in the region into the first spectral region;
Selected by the frequency converter and the first filter means
And the frequency converted by the first frequency converter.
A first adder for adding the received signal and the first adder
The signals added by the converter into the third spectral domain
Second frequency converter, and the high-pass filter means
And the second frequency converter
And a second adder for adding the frequency-converted signal.
It is characterized by doing .

[0007]

[0008]

[0009]

[0010]

[0011]

[0012]

[0013]

[0014]

[0015]

FIG. 1 is a block diagram illustrating a preferred embodiment of the present invention. Video signal source 10
Is coupled to the A / D converter 12 to convert the analog format to digital format to provide the composite video signal. The output of the converter 12 that has converted the analog to digital is the low- pass filter 1
4 inputs. Luminance processor 16 receives the filtered luminance signal and is coupled to low-pass filter 14 for processing. The luminance processor 16 is connected to an input of a converter 18 which converts a digital format into an analog format, an output of the D / A converter 18 is connected to an FM modulator 19, and an output signal of the FM modulator 19 is high. The regions are filtered and applied to the input of signal adder 20. The output of converter 12 for converting analog to digital is coupled to the inputs of first and second bandpass filters 22 and 24, respectively. The output of filter 24 is coupled to a first input of modulator 26. The other input of modulator 26 is modulator 3
It is connected to the output of 0. The two inputs of modulator 30 are coupled to a signal source having a frequency that is ½ times the field frequency of each and a signal source having a frequency that is n times the horizontal line frequency. Many values can be substituted for n. However, a value adapted to the exemplary embodiment shown here is n = 400.
It is. For a value of n = 400, the modulation frequency is approximately 6.
3 MHz. This is 2.7 MHz (2.25 / 2 +
The signal in the detailed area of the middle band concentrated at the point of 3.15 / 2) transitions to the signal of the detailed area of the high band concentrated at the point of 3.6 MHz (3.15 / 2 + 4.05 / 2). Has the effect of being able to.

[0016] thereon, 400FH is 10 times of the carrier following chromaticity 40Fh. The 40 fH carrier allows the two frequencies to interlock, thereby eliminating and reducing primarily unwanted beat frequencies. Adder 32
The other input is coupled to the output of bandpass filter 32.
The output of summer 32 is coupled to a first input of modulator 34. The other input of modulator 34 is coupled to the output of bandpass filter 36, and the input of bandpass filter 36 is coupled to the output of modulator 38. Bandpass filter 3
4 separates the 4.21 MHz carrier signal as the output of the modulator 38, and supplies the 4.21 MHz carrier signal to the input of the modulator 34. The output of the analog to digital converter 12 is also coupled to a sync separator 40, the output of which is coupled to the burst sync input of a chromatic carrier oscillator 42. The output of the chromaticity carrier oscillator 42 is connected to the input of the modulator 38. The other input of modulator 38 is provided on a phase 629 KHz carrier which meshes with the input video signal. This 629KH
The z carrier signal is derived from a 629 KHz oscillator 44 controlled by horizontal synchronization derived from the video input signal. The output of the 629 KHz oscillator 44 is coupled to the input of the modulator 38 in the manner of a phase shifter 46. The phase shifter 46 is controlled by a recorder induced 1/2 field rate (30 Hz) switching signal to distinguish the two recorded tracks on the magnetic tape.

In this way, the modulation result value of the modulator 34 is the chromaticity signal [taken from the output of the pass filter 22].
And a luminance component modulated onto a (3.58 ± 4.21) MHz carrier. The 629 KHz side band is selected from the output of the modulator 34 by a low pass filter 48 connected to the modulator 34 in the manner of a digital to analog converter 50. Low-pass filter 4
The output of the 8 while providing a color under signal is coupled to the other input of the adder 2 0 described above. The output of the adder 20 is connected to a recording circuit 52.

In operation, the low-pass filter 14 selects a signal representing the region of the synthesized video signal frequency spectrum as shown in the graph region of 2.24 MHz or less in FIG. In the embodiment, the band pass filter 1 is ideal.
In the pass band of 4, the -6 dB point is 2.24 MHz as much as possible.
Is selected to be located at. However, since analog transmission systems in practice already tend to reduce these band edges, it is desirable to select these bandwidths somewhat wider so that no reduction occurs at the band edges. This spectral region of the composite video signal is combined with another signal, and the spectral region of this signal is described again, from about 3.4 MHz , the highest level of synchronization, for recording on the next tape. It is processed in the same manner up to a frequency modulated signal with variations up to about 4.4 MHz for the highest white level. The second and third regions of the composite video signal spectrum are selected by bandpass filters 24 and 22 as shown in the graph of FIG. The low frequency (−6 dB) point of the band pass filter 24 should be 2.2 so that it coincides with the low frequency point of the low pass filter 14.
It is set to 4 MHz, and its high frequency (-6 dB) point is 3.
It is set to 15 MHz. The low-frequency (-6 dB) point of the band-pass filter 22 corresponds to the high-frequency (-
6 dB) is set to 3.15 MHz to coincide with the point. This causes the intermediate frequency spectral region in the entire pass band to be passed by the band pass filter 24 and the highest frequency spectrum to be passed by the band pass filter 22, so that the entire pass band passed by the low pass filter 14 is The first tends to exhibit a reasonably flat response with the low frequency spectral region of the composite video signal with a standard luminance signal. The chromaticity subcarrier is 3.58 MH by the band-pass filter 22.
Since it is located at z, most of the chromaticity signals are passed through, for example, a maximum high frequency filter, a band pass filter 22.

The upper spectral region passed by the filter 22 indicates the detail and chromaticity of the "high band" image.
The intermediate region passed by the filter 24 is the "middle band"
It corresponds to the degree of detail of the video. The bottom region of the spectrum shown in Figure 2 is usually recorded. Since the upper spectral region is present in any case, no additional modulation is required. However, it is not useful given the absence of the mid-band region. According to the invention, the mid-band region corresponds to the normal band of the filter 24 and is changed in frequency and spectrally interleaved with the chrominance signal.

In this manner, the output signal of the band-pass filter 24 is changed into the same band as the chromaticity signal by being modulated by the modulator 26 by the chromaticity sub-carrier and other sub-carriers, so that the chromaticity sub-carrier is changed. In, the sub-carriers alternate phase from field to field, but not line to line. The chrominance signal and the changed luminance signal are referred to herein as augmented chrominance signals.
The output signal of the band-pass filter 22 is added to the reinforced adder 3.
At 2, it is matched with the output of the multiplier 26. In this way, on the one hand, the chrominance information signal having the associated luminance signal of the chrominance information signal, for example the enhanced chrominance signal, and on the other hand the luminance signal applied from the band-pass filter 24 are the same Occupying a frequency band, they can each be reproduced due to differences in their respective carriers. The enhanced chromaticity signal then has a frequency of 6
It is processed in a well-known manner to be recorded on tape with a subcarrier that is 29 KHz. Such processing steps include the output of the synchronizing chromaticity subcarrier oscillator modulated by the modulator 38 with the synchronized 629 KHz signal and the bandpass filtering result output to select the 4.21 MHz sideband. Performed by Such a leveled signal is then used by modulator 34 to modulate the output signal of adder 32 to produce a modulation multiplication value. Such a signal then becomes a low-pass filter applied to the adder 20 that generated the output for recording in the recording area 52 and is combined with the processed luminance signal.

Table 1 analytically shows many fields and lines in the time domain.

In Table 1, C is the chromaticity, L1 is the luminance from the bandpass filter 22, and L2 is the luminance from the bandpass filter 24.

[0023]

[Table 1]

From Table 1, it is clear that the signals L1 and L2 do not change phase from line to line from the same field. However, the L2 signal is phase reversed from field to field. On the other hand, in the same field and on a predetermined line, all chromaticity signals whose phases alternate from line to line alternate in the second field.

FIG. 3 illustrates a block diagram for a preferred embodiment of a playback arrangement for playing back recordings made in accordance with the present invention. The reproduced luminance signal YPB is converted into a digital format by a converter 300 that converts analog into digital. The output signal of the converter 300 that has converted the analog to digital is added to the adder 30.
2 is applied. The reinforced chromaticity reproduction signal CPB having a frequency of 3.58 MHz is converted into a digital format by a converter 304 which converts analog into a digital format. The output signal of the converter 304, which has converted analog into digital, is comb-shaped filtered by a line comb filter having a 1H delay 306 and an adder 308. The comb-filtered output is converted to an analog chromaticity signal by a converter 310 that converts digital to analog. The augmented chrominance signal is also a comb filtered by a field comb filter having a 1H delay 306 plus a 262H delay 312 and an adder 314. The output of summer 314 is filtered by bandpass filter 316, which has substantially the same passband as bandpass filter 22 of FIG. The output of bandpass filter 22 is applied to the input of adder 318. The enhanced chrominance signal is also comb filtered by a field comb filter with a 262H delay 312 and a field comb with a subtractor 320. Subtractor 320
Is applied to the input of a bandpass filter 322 having substantially the same passband as the bandpass filter 24 of FIG. The output of bandpass filter 322 is not line-to-line alternating, but is modulated by modulator 324 with field-to-field alternating carriers. The carrier has a modulator 326 having a modulator having a signal corresponding to ½ of a field frequency at a first input, a signal to which nfH is applied at a second input, and an output connected to an input of a modulator 326. Derived from. The other input of the modulator 324 is the bandpass filter 32.
2 outputs.

In operation, a line comb filter with 1H delay 306 and adder 308 removes the luminance component from the chromaticity channel. In this way, the playback system of FIG. 3 remains compatible with existing VHS players. 26. Field comb filter with 1H delay 306 plus 262H delay 312 and adder 314;
The field comb filter having the 2H delay 312 and the adder 320 corresponds to the bandpass filters 24 and 2 of FIG.
2 separates each spectral region of the luminance signal when first separated by 2. After being filtered by bandpass filters 316 and 322, the two signals are summed.
Signal and then signal YPD and signal Y
It produces a combined bandwidth signal that is substantially larger than the bandwidth of the PB. In addition, compatibility is provided for existing machines and tapes. In operation, bandpass filters 316 and 322 are possible, rather than their respective filters 22 and 24, to remove unwanted components introduced near the boundaries of the filter bands in the analog region of the signal path. It is arranged to have a slightly narrower bandwidth.

FIG. 4 shows an embodiment for coping with a recording area according to the present invention. Elements in the embodiment of FIG. 4 that are similar to elements in the embodiment of FIG. 1 are identically illustrated as referred to in the two figures. In the embodiment of FIG.
Low pass filter 1 to be processed as in
4 and bandpasses 22 and 24. The composite signal is also applied to separator 40 as before. The output signal of bandpass filter 22 is also processed by a motion adaptation circuit. The operation of this circuit will now be briefly described.
The operation of this circuit is "completed video signal recording system"
The operation described in the above-identified patent application invented by the inventor of the name Strolle et al. Is fundamentally similar in principle and is mentioned to explain the motion adaptation circuit referred to in this more detail. The output signal of bandpass filter 22 is thus also applied to a line comb filter with 1H delay 23 and adder 25, and is subtracted from the undelayed signal applied directly to the other inputs of adder 25. The output of adder 25 and the directly connected output of bandpass filter 22 are applied to the respective signal inputs of soft switch 370. Soft switch 37 selects one or the other of the signals applied to its signal input and is responsive to the level of the control signal applied to its control input to provide the selected signal to its output. .

The output of the A / D converter 12 is also applied to a motion signal induction circuit having a high pass filter 27, and the output of the motion signal induction circuit is applied to the input of a horizontal high pass filter 29. The subtractor 31 is connected between the input and output of the horizontal high-pass filter 29 to induce a predetermined difference signal between the input and output signals. The difference signal is applied to an amplitude detector 33, and the output of the amplitude detector is a signal spreader 3
5 is applied. The output of the signal spreader 35 is applied to the control input of the soft switch 37.

Briefly, the amplitude detector 33 provides a digital output which indicates when motion is present when the motion detector is detected in the image being processed. The signal spreader 35 changes the signal to spread. A detailed description of such a principle can be found in the above-mentioned patent application invented by another inventor outside Controlle and the patent application invented by an inventor outside KO under the name "control signal" used here for reference. It is disclosed in serial number 07 / 531,057.

Soft switch 37 thus responds to the signal at its control input provided by signal spreader 35 to change the ratio of the two signals present at that signal input. If the value of the control signal is zero or almost zero, it cannot indicate motion or a low level of motion, and the soft switch 37 causes the complete output signal of the bandpass filter 22, that is, a high band fine region. The added chromaticity output signal is generated. If the value of the control signal corresponds to the high level of the motion, then the soft switch 37 generates the full output of the adder 25, which is a chromaticity signal having a filtered high band fine area.
The presence of motion causes crosstalk between the signals of the two luminance sub-regions transmitted, whereby the mid-band sub-region signals are transmitted during the motion. Line comb filters will separate the luminance signal or reduce the vertical resolution. In this manner, the line comb filter signal is desirably utilized when motion is present. At the intermediate value of the motion signal, the output signal of the soft switch 37 contains a proportion of each of its input signals. A detailed description of other operations for the soft switch 37 is provided in the above-mentioned patent application invented by the inventors other than Strolle, entitled "Improved Video Signal Recording System".

The output of soft switch 37 is then added to the output of bandpass filter 24 by adder 32. Processing then continues in the embodiment of FIG.

FIG. 5 illustrates an embodiment of the invention for reproducing a signal to be recorded using the embodiment of FIG. 4 or recorded in the conventional manner. Elements that are the same or similar to the elements in the embodiment of FIG. 3 are referred to in the two figures as being the same for reference. The motion control signal in the embodiment of FIG. 5 comprises a motion detector 402 coupled to receive the input luminance signal and comprises a signal spreader 4.
04 is induced in an array providing a motion signal. The signal spreader 404 in turn provides motion control signals. The adder 400 uses the same method as the adder 308 for 1H.
A filter is provided to provide the input signal to the soft switch 406. In this manner, the input of the bandpass filter 322 may be the entire output signal of the adder 400 and the adder 320, or the area of each output signal is at the level of the control signal by the control signal of the soft switch 406. Then, the input of the bandpass filter 322 may be a part of each output signal. The control switch 408 is disposed on a path connecting the output of the adder 314 to the band pass filter 316. Since the output of adder 314 is at the level of the control signal at the control input of control switch 408, the output of adder 314 is applied or not applied to the input of bandpass filter 316. The motion control signal provided by signal separator 404 is applied to the control inputs of each of soft switch 406 and control switch 408. Thus, while the image area is still continuing, the control switch 408 sets the gate to O
Once in the N state, the output of adder 314 is applied to bandpass filter 316, and the output thus encompasses a horizontal detailed area. When motion is sensed, the detailed domain signal provided by summer 314 is not used. In addition, when the motion goes high, the output of soft switch 406 is the output signal of adder 400 and corresponds to the output signal of the line comb filter; in the absence of motion, the output is the output of adder 320 at 263.
This corresponds to the output of the H-field comb filter.

[0033]

In the chromaticity channel, the line comb filter removes the luminance signal from the band-pass filter 22 and removes the luminance signal from the band-pass filter 24, so that the compatibility with the existing recording / reproducing system is maintained. Will be understood.

2. The present invention continuously modulates the chromaticity signal . Although embodiments have been described that utilize signals in a fine area on a 58 MHz chromaticity carrier and a 629 KHz carrier, the present invention can easily be adapted to applications where the passband signal can be directly modulated on the 629 KHz carrier.

Furthermore, if the chrominance subcarrier is encoded as another phase relationship with a VHS system with the described background of the present embodiment, such as in PAL and beta formats, the present invention Can be applied by appropriately adjusting the phase of the subcarrier used.

In this embodiment, the carrier switching phase for switching from field to field is executed before modulation. Obviously, this could be the opposite.

[0037] These and other variations will be apparent to those skilled in the art and are within the scope and spirit of the invention, which is limited only by the appended claims.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment for recording according to the present invention.

FIG. 2 is a diagram showing a frequency response graph so that the present invention can be easily understood.

FIG. 3 is a block diagram of an embodiment for recording according to the present invention.

FIG. 4 is a block diagram of another embodiment for recording according to the present invention.

FIG. 5 is a diagram showing an embodiment for reproduction in a block diagram form according to the present invention.

[Explanation of symbols]

10 video signal source 12,300,304 A / D converter 14,48 low-pass filter 16 luminance processor 18,50,310,326 D / A converter 19 FM modulator 20,32,302,308,314,14 318, 320
Adders 21, 27, 29 High-pass filters 22, 24, 36, 316, 322 Band-pass filters 23 1H delay 26, 30, 38, 324 Modulator 33 Amplitude detector 35, 404 Signal spreader 40 Synchronization separator 42 Chromaticity Carrier Oscillator 44 629 KHz Oscillator 46 90 ° Phase Shifter 52 Recording Circuit 402 Motion Detector

Claims (14)

(57) [Claims] 1. A video signal processing system for generating a predetermined television signal comprising a predetermined carrier modulated into a predetermined luminance signal and chromaticity information, wherein a portion of the television signal around the chromaticity carrier is present.
Selecting a first spectral region encompassing the predetermined region
1 filter means, the first spectrum of the television signal and
Third spectral region including low frequency end spectrum
Select a second spectral region encompassing the middle region of the range
Second filter means for controlling the third spectral region of the television signal
And a third filter means for selecting, and FM-modulates the signal selected by the third filter means.
FM modulation means, and a high frequency component from a signal modulated by the FM modulation means.
The high-pass filter means to be selected and the second space selected by the second filter means.
Convert the signal in the cuttle domain to the first spectral domain
A first frequency converter, a signal selected by the first filter means, and the signal
Add the signal whose frequency is converted by the frequency converter 1
A first adder that performs the processing and a signal that is added by the first adder to a third spectrum.
A second frequency converter for converting the signal to a torque domain, and a signal selected by the high-pass filter
Add the signal whose frequency has been converted by the second frequency converter.
Video <br/> signal processing system characterized by have a second adder for calculation. 2. A carrier signal for generating a predetermined carrier signal , wherein the second frequency converter alternates between the fields, but does not alternate between the lines.
2. A bidet according to claim 1, further comprising a generating means.
E signal processing system. Wherein the carrier signal is a signal der of the second spectrum <br/> Torr region signal is the second spectral range
That of claim 2, wherein that present in a given frequency to be converted into combined frequency of the important spectral
Video signal processing system. 4. The video signal processing system of claim 3 including means for processing the output signal for the recording. 5. A reproduction luminance signal and a reproduction chromaticity signal are processed.
A video signal processing system to select a first spectral region that includes the reproduced luminance signal.
A first filter means for selecting the first spectrum of the television signal;
Third spectral region including low frequency end spectrum
Select a second spectral region that covers the middle region of the range
Second filter means and a third filter means for selecting the third spectral region
And FM modulating the signal selected by the third filter means
FM modulation means, and a high frequency component from a signal modulated by the FM modulation means.
The high-pass filter means to be selected and the second space selected by the second filter means.
Transform a signal in a vector domain into the first spectral domain
A first frequency converter, a signal selected by the first filter means,
Add the signal whose frequency has been converted by one frequency converter
Alternate between the first adder and the field
Carrier signal that generates a carrier signal that does not alternate at in
Signal generating means and the signal added by the first adder to the carrier.
A second frequency conversion circuit for converting the frequency of the signal into a signal, and a signal selected by the high-pass filter means;
The signal frequency-converted by the second frequency converter is added.
A second adder for calculating, a recording means for recording the output signal of the second adder, a reproduction means for reproducing the signal recorded in the recording means, and a reproduction signal reproduced by the reproduction means. Of which, chromaticity signal
Is supplied to separate the chromaticity component from the chromaticity signal.
Comb-type filter means, and the chromaticity signal is supplied, and a luminance component is calculated from the chromaticity signal.
The field comb filter means for separating and the line comb filter according to the motion of the luminance signal.
Filter means or the output of the field comb filter means
The switch means for selecting either one and the signal selected by the switch means are set to a predetermined spectrum.
A third frequency to be converted to a frequency domain encompassing the torque domain
Conversion means, the output signal of the field comb filter means and the third
Third adder for adding the output signal of the frequency conversion means
And the output signal of the third adder and the reproduced luminance signal.
A fourth adder for calculating, and a fourth adder for restoring the output of the fourth adder to the original frequency.
A video signal processing system comprising frequency conversion means . 6. The predetermined limit video signal processing system for recording a predetermined bandwidth video signal on a medium bandwidth, and input terminal that will receive the broadband video signal, connected to said input terminal The wideband video signal
Of the first frequency band that includes the first luminance signal
A first filter means for selecting, and the wideband video signal connected to the input terminal.
Of the second frequency band that includes the second luminance signal
Second wideband video signal connected to the input terminal and a second filter means for selecting
A third frequency band including the third luminance signal
And FM modulation of the signal selected by the third filter.
FM modulation means, and a high frequency component from a signal modulated by the FM modulation means.
High-pass filter means to be selected, and the second frequency selected by the second filter means
A first for converting a signal of several bands into the first frequency band;
Frequency conversion means , the signal selected by the first filter means and the first signal
Pressurizing the frequency-converted signal by a frequency conversion hand stage
A first adding means for calculation, a signal added by said first adding means third frequency
A second frequency conversion means for converting the signal into several bands, a signal selected by the high-pass filter means,
A more frequency-converted signal to the second frequency converting means
Second addition means and the second feature and to ruby Deo signal processing system that includes a recording means for recording an output signal of the adding means for adding. 7. The portable terminal connected to the input terminal,
Detects motion from the band video signal and expands the motion.
A wideband video signal connected to the input terminal and a motion spread signal generator for generating a scattered signal.
A line-comb filter for separating the chromaticity component from the input signal, and the wideband video signal connected to the input terminal.
Field comb filter for separating a luminance component from the line comb filter , the line comb filter and the field comb filter
Output of the motion spread signal generator
According to the line comb filter or the field comb
7. A video signal processing system according to claim 6, further comprising a soft switch means for outputting one of the outputs of the filter . 8. When the motion is not detected, the soft switch means transmits a predetermined signal from the first band-pass filter means. When the motion is detected, the soft switch means uses a 1H comb filter. The predetermined signal is transmitted by the
8. The video signal processing system according to 7 . 9. The video signal processing system according to claim 8, wherein the second frequency converting means converts the frequency into a frequency alternating between fields by engaging with a predetermined horizontal sweep rate. 10. A video signal includes a predetermined luminance signal component is recorded on the medium of limited bandwidth, ruby to play folded chromaticity component includes a luminance signal component <br In the video signal processing system, the chromaticity signal is supplied and has respective inputs coupled to the source of a predetermined reproduction signal to separate the chromaticity components.
That 1 and H line comb filter, a full Iru <br/> de comb filter you separate the folded luminance signal component, is connected to the line comb filter, the line comb off
Separate the spectral region of the luminance signal from the output of the filter
A first filter connected to the field comb filter;
The spectral range of the luminance signal from the output of the comb filter
It has a second filter means for separation and a predetermined frequency that meshes with the horizontal sweep rate.
A predetermined carrier signal alternated in the field
And a carrier signal generating means for generating an output signal of the second filter.
Converting to the frequency of the carrier signal generated by the means
Modulating means, and an output signal of the modulating means connected to the output of the modulating means.
A first addition for adding a signal to the output signal of the first filter
Means for adding the output signal of the first adding means and the luminance signal
A video signal processing system , comprising: a second adding means . 11. A motion is detected from the luminance signal.
Motion spread signal that generates a motion spread signal
Generating means, the field comb filter and the first filter.
Provided between the field comb filter and the first
And a transmission switch for controlling connection with the filter of the first and second filters, wherein the mode generated by the motion spread signal generating means is provided.
If the spread signal is a motion sensitive signal,
The soft switch is an output signal of the line comb filter.
To the second filter and no significant motion
If the soft switch is the field comb fill
The output signal of the controller is transmitted to the second filter, and if no motion is detected, the transmission switch turns on.
Between the field comb filter and the first filter
Disconnecting, not transmitting the signal, and motion
Is detected, the transmission switch is connected to the field comb
A connection state is established between the filter and the first filter,
The signal transmission is enabled.
Video signal processing system. 12. Modulation to predetermined luminance signal and chromaticity information
A predetermined television signal having a predetermined predetermined carrier.
The and have you in the video signal processing system for generating issue, at the periphery of the above chromaticity career out of the television signal
Selecting a first spectral region encompassing the predetermined region
1 and the first spectrum of the television signal and
Third spectral region including low frequency termination spectrum
Select a second spectral region that covers the middle region of the range
And a third spectral region of the television signal.
And a fourth step of FM-modulating the signal selected in the third step.
Step, and selecting a high frequency component from the signal modulated in the fourth step
And a fifth step of selecting the second spectral region selected in the third step.
Sixth step of converting a signal into the first spectral region
The signal selected in the first step and the signal selected in the seventh step.
A seventh step of adding the signal having undergone the wave number conversion, and a third spectral domain by adding the signal added in the seventh step.
An eighth step of converting the signal into a frequency band, and the signal selected in the fifth step and the frequency in the eighth step.
A ninth step of adding the signal subjected to the wave number conversion.
A processing method for a video signal processing system , comprising: 13. The eighth step is performed in the seventh step by a predetermined carrier signal which alternates between the fields but does not alternate between the lines.
Processing <br/> method for a video signal processing system of claim 12, wherein converting the signal into a third spectral region. 14. The video signal according to claim 13 , further comprising a tenth step of recording the output signal.
No. processing method of the signal processing system .