JPH07107397A - Television receiver, recorder and reproducer - Google Patents

Abstract

PURPOSE:To reduce the burden of a user at the time of connecting a television receiver and multi-system VTR. CONSTITUTION:Single system TV 100 and multi-system VTR 200 are connected by a cable 300. An ID output circuit 106 provides ID showing the standard system of the output color video signal SVa of a tuner part 101 for the ID detection circuit 206 of VTR 200. The ID detection circuit 206 automatically sets a deck part 201 to be in a state corresponding to the standard system of the signal SVa. The signal SVa can be recorded by setting the deck part 201 to be in a recording state. Besides, the ID detection circuit 206 automatically sets the standard system of the output color video signal SVo' of a converter 203 to be coincident with the standard system of the signal SVa, consequently, to correspond to TV 100 (monitor part 105). VTR 200 is set to be in a reproducing state and the switch 102 of TV 100 is connected to a side (b) so as to display an image by the signal SVo' on a monitor part 105.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver, a recording device and a reproducing device which constitute a video system.

[0002]

2. Description of the Related Art There are many standard systems for color video signals, such as the NTSC system, the PAL system, and the SECAM system, and television receivers, VTRs, etc. adapted to the respective standard systems are commercially available. Also, as VTR soft tapes, several types of soft tapes are available depending on the standard method of the recorded color video signal. A multi-method VTR has been released for recording and reproducing these tapes. And
As a multi-system VTR, there is a multi-system VTR with a built-in converter that can convert the standard system during reproduction and output a color video signal of an arbitrary standard system.

[0003]

When the above-described multi-system VTR with built-in converter is connected to a television receiver, the VTR is output so that the standard system color video signal suitable for the television receiver is output. Had to set up a converter on the side. This setting is done manually, which is very troublesome for the user.

In the case of a multi-system VTR without a tuner, for example, a color video signal from a tuner of a television receiver is recorded, but it is necessary to set the VTR side according to the standard system of this color video signal. was there. This setting is also done manually, which is very annoying to the user.

Therefore, the present invention reduces the burden on the user when connecting the television receiver and the multi-system VTR.

[0006]

According to a first aspect of the present invention, there is provided a tuner section for obtaining a single standard type color video signal, and a monitor section for displaying an image based on the color video signal output from the tuner section. The television receiver has an index signal output means for outputting an index signal indicating the single standard system.

According to a second aspect of the present invention, there is provided a tuner section for obtaining a color video signal, a system discriminating means for discriminating a standard system of the color video signal outputted from the tuner section, and a standard system discriminated by the system discriminating means. In a television receiver having a monitor section for displaying an image by a color video signal output from a tuner section, the index for outputting an index signal indicating a standard system discriminated by the system discriminating means. A signal output means is provided.

According to a third aspect of the present invention, in a television receiver having a monitor section for displaying an image based on a single standard type color video signal supplied to an input terminal, an index signal indicating the single standard system is provided. Is provided with index signal output means.

According to a fourth aspect of the present invention, there is provided system discriminating means for discriminating the standard system of the color video signal supplied to the input terminal.
In a television receiver having a monitor unit for switching the state according to the standard system discriminated by the system discriminating means and displaying an image by a color video signal supplied to an input terminal, an index signal of a specific code is output. The index signal output means is provided.

According to a fifth aspect of the present invention, in a recording device having a deck section capable of recording a plurality of standard type color video signals, an index for detecting an index signal indicating the standard method of the color video signals supplied to the deck section. A signal detection means is provided, and the state of the deck section is switched according to the detection output of the index signal detection means.

According to a sixth aspect of the present invention, there is provided a standard reproduction apparatus having a deck section for outputting a color video signal of a predetermined standard system and a converter for converting the standard system of the color video signal output from the deck section. When the index signal detected by the index signal detecting means indicates the standard method, the standard of the color video signal output from the converter according to the detection output is provided. It controls the method.

According to a seventh aspect of the present invention, there is provided a standard reproduction apparatus having a deck section for outputting a color video signal of a predetermined standard system and a converter for converting the standard system of the color video signal output from the deck section. When the index signal detected by the index signal detecting means is an index signal of a specific code, the converter performs method conversion according to the detection output. There is no such thing.

[0013]

According to the first aspect of the invention, when the multi-system VTR is connected to the television receiver to record the color video signal output from the tuner section, the VTR detects the index signal and outputs the detected signal. Therefore, it is possible to automatically set the recording system so as to match the standard system of the color video signal.

According to the second aspect of the invention, when the multi-system VTR is connected to the television receiver (multi-system TV) and the color video signal output from the tuner section is recorded, the VTR side detects the index signal. However, it is possible to automatically set the recording system according to the standard method of the color video signal by the detection output.

According to the third aspect of the invention, when the multi-system VTR is connected to the television receiver and the monitor section displays an image of the reproduced color video signal output from the multi-system VTR, the index signal is displayed on the VTR side. It becomes possible to automatically set the standard system of the output color video signal by the detection output so as to match the television receiver.

In a fourth aspect of the present invention, when a multi-system VTR is connected to the television receiver (multi-system TV) and an image based on the reproduced color video signal output from the multi-system VTR is displayed on the monitor section, It is possible to detect the index signal on the VTR side and prevent the conversion process of the standard method in the converter from the detection output,
It is possible to avoid signal deterioration due to system conversion.

In a fifth aspect of the present invention, when a television receiver is connected to the recording device and a color video signal output from the tuner of the television receiver is recorded, the deck unit is adapted so as to conform to the standard system of the color video signal. It is possible to automatically set the recording system of.

In a sixth aspect of the present invention, when a television receiver is connected to the reproducing device and an image based on the reproduced color video signal is displayed on the monitor section, the standard system of the reproduced color video signal is the television receiver. It is possible to set automatically to suit.

In a seventh aspect of the present invention, when a television receiver (multi-type TV) is connected to the reproducing apparatus and an image based on the reproduced color video signal is displayed on the monitor section, standard converter conversion processing is performed by the converter. Is not performed, it is possible to avoid signal deterioration due to system conversion.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The first embodiment of the present invention will be described below with reference to FIG.
Examples will be described. This example is a television receiver (single system T) compatible with a single standard system (either NTSC system, PAL system, or SECAM system in this example).
V) 100 and multi-method VTR 200 with cable 30
It is an example of a video system configured by connecting with 0.

First, the single system TV 100 will be described. 101 is a single standard type composite color video signal SV
This is a tuner unit that outputs a. This tuner unit 10
The color video signal SVa output from the No. 1 is supplied to the fixed terminal on the a side of the changeover switch 102 and the line-out terminal 103.

Further, the color video signal supplied to the line-in terminal 104 is supplied to the fixed terminal on the b side of the changeover switch 102. The changeover switch 102 is supplied with a changeover control signal SW according to an operation by a user's key operation unit (not shown), and controls the changeover. The color video signal output from the changeover switch 102 is the monitor unit 1.
It is supplied to 05. The monitor unit 105 includes a brightness / color processing circuit, a deflection circuit, a picture tube, and the like, and displays an image by a color video signal.

Numeral 106 is an index signal output circuit (ID output circuit). From the ID output circuit 106, the standard system of the color video signal SVa described above, that is, T
An index signal ID indicating the standard method that is suitable for V100 (monitor unit 105) is output, and this index signal ID is supplied to the index output terminal 107. For example, the index signal ID is a 3-bit code,
It is set to "000" for the NTSC system, "010" for the PAL system, and "011" for the SECAM system.

Next, the multi-method VTR 200 will be described. 201 is a plurality of standard methods (in this example, NTSC
System, PAL system, SECAM system color video signal)
This is a deck section that can record and reproduce. The color video signal supplied to the line-in terminal 202 is supplied to the deck section 201 as a recording signal. The color video signal SVo reproduced by the deck unit 201 is supplied to a converter 203 for converting the standard system, and the color video signal SVo ′ output from the converter 203 is supplied to a line-out terminal 204.

The index signal ID supplied to the index input terminal 205 is an index signal detection circuit (ID detection circuit) 206 having a microcomputer.
Is supplied to. The ID detection circuit 206 detects the index signal ID, controls the state of the recording system of the deck unit 201 during recording according to the standard method indicated by the index signal ID, and outputs the color video signal SVo output from the converter 203 during reproduction. Control the standard method of '.

FIG. 2 shows an example of the configuration of the recording signal processing system of the deck section 201. In the figure, the input color video signal SVi is transmitted through the n-side, p-side, and s-side of the changeover switch 11 to a luminance signal / color signal separation circuit (hereinafter, referred to as "Y / C").
12N, 12P, 12S. The Y / C separation circuits 12N, 12P, and 12S are for separating the luminance signal Y and the color signal C from the NTSC system, PAL system, and SECAM system color video signals, respectively. The changeover switch 11 uses the standard system of the input color video signal SVi as NTSC system, PAL system, and SEC.
In the case of the AM system, it is switched to the n side, the p side, and the s side, respectively.

Luminance signals Y output from the Y / C separation circuits 12N, 12P, 12S are output to the changeover switch 13 respectively.
Are supplied to the fixed terminals on the n-side, the p-side, and the s-side. Similar to the changeover switch 11, the changeover switch 13 also has an n-side, a p-side, and a n-side when the standard system of the input color video signal SVi is the NTSC system, the PAL system, or the SECAM system, respectively.
Switched to the s side.

The luminance signal Y output from the change-over switch 13 is emphasized in the high frequency range by the pre-emphasis circuit 14 and then F
It is supplied to the M modulator 15 and FM-modulated. 16N is a volume for adjusting the carrier frequency when the standard system of the input color video signal SVi is the NTSC system, and the signal obtained at the mover is n of the changeover switch 17.
It is supplied to the FM modulator 15 via the side.

16C is an input color video signal SVi
Is a volume for carrier frequency adjustment when the standard system of is a PAL system and a SECAM system,
The signal obtained by the mover is supplied to the FM modulator 15 via the fixed terminal on the c side of the changeover switch 17.

The changeover switch 17 is connected to the n side when the standard system of the input color video signal SVi is the NTSC system, and is connected to the c side when the standard system of the input color video signal SVi is the PAL system and the SECAM system. In the FM modulator 15, when the standard system of the input color video signal SVi is the NTSC system,
Sync chip 3.4MHz, white peak 4.4
FM modulated to MHz and PA standard
In the L system and the SECAM system, FM modulation is performed so that the sync chip has a frequency of 3.8 MHz and the white peak has a frequency of 4.8 MHz. The modulated luminance signal YFM output from the FM modulator 15 is supplied to the adder 18.

The color signals C output from the Y / C separation circuits 12N and 12P are n of the changeover switch 19, respectively.
Side and p-side fixed terminals. This changeover switch 1
9 is the standard system of the input color video signal SVi is NTSC
In the system and the PAL system, switching is made to the n side and the p side, respectively. The color signal C output from the change-over switch 19 is supplied to the frequency converter 20 and low-frequency conversion processing is performed.

Reference numeral 21N is a crystal oscillator having the same oscillation frequency as the NTSC color subcarrier frequency (3.58 MHz), and is connected to the frequency converter 20 through the n side of the changeover switches 22 and 23. Reference numeral 21P is a crystal oscillator having the same oscillation frequency as the PAL color subcarrier frequency (4.43 MHz), and is connected to the frequency converter 20 via the p side of the changeover switches 22 and 23. Changeover switch 22, 23
Is the input color video signal SV as in the changeover switch 19.
When the standard system of i is NTSC system or PAL system,
Switching to the n side and the p side, respectively. As a result, the low-frequency conversion color subcarrier frequency is 62 when the NTSC system is used.
9 kHz, and 627 kHz in the PAL system.

The low frequency conversion color signal CL output from the frequency converter 20 is supplied to the phase shift circuits 25N and 25P via the n side and the p side of the changeover switch 24. Similar to the changeover switch 19, the changeover switch 24 is changed over to the n side and the p side, respectively, when the standard system of the input color video signal SVi is the NTSC system or the PAL system. The phase shift circuit 25N is for NTSC system, and the phase shift circuit 25P is for PAL system. In these phase shift circuits 25N and 25P, as is well known, a phase shift process is performed so that crosstalk components from adjacent tracks can be removed by using a comb filter in a reproducing system (for example, PS color system).

The low-frequency conversion color signal CL that has been subjected to the phase shift processing by the phase shift circuits 25N and 25P is supplied to the a side of the changeover switch 27 via the n side and the p side of the changeover switch 26, respectively. When the standard system of the input color video signal SVi is the NTSC system or the PAL system, the changeover switch 26 is switched to the n side and the p side, respectively.

Further, the color signal C output from the Y / C separation circuit 12S for the SECAM system is supplied to the frequency divider 28 and is divided into 1/4. The frequency-divided color signal CD output from the frequency divider 28 is connected to the b side of the changeover switch 27.
The changeover switch 27 is connected to the a side when the standard system of the input color video signal SVi is the NTSC system and the PAL system, and is connected to the b side when the standard system is the SECAM system. As a result, from the changeover switch 27, the standard system of the input color video signal SVi is NTSC system and PA.
In the case of the L system, the low-frequency conversion color signal C having low-frequency conversion color subcarrier frequencies of 629 kHz and 627 kHz, respectively.
On the other hand, when the SECAM system is used, the divided color signal CD is obtained.

The output signal of the changeover switch 27 is the adder 18
Is supplied to. In the adder 18, the input color video signal S
When the Vi standard system is the NTSC system or the PAL system, the low-frequency conversion color signal CL is added to the FM modulated luminance signal YFM to form a recorded video signal, and when the SECAM system is used, the FM modulated luminance signal YFM is divided. The recorded video signal is formed by adding the peripheral color signals CD. This recording video signal is supplied to the rotary magnetic head 30 via the recording amplifier 29 and is sequentially recorded on the inclined tracks of the magnetic tape 31.

FIG. 3 shows an example of the structure of the reproduction signal processing system of the deck section 201. In the figure, a video signal reproduced from the magnetic tape 31 by the rotary magnetic head 30 is amplified by a reproducing amplifier 41, and then a side of a changeover switch 42,
It is supplied to the equalizer circuits 43A and 43B via the b side. The change-over switch 42 is connected to the side a when the reproduced video signal is related to the NTSC system and the PAL system, and is connected to the side b when the reproduced video signal is related to the SECAM system. The equalizer circuit 43A is for the NTSC system and the PAL system, and has a trap function for the low-frequency conversion color signal CL in addition to a characteristic compensation function for electromagnetic conversion characteristics and the like. Further, the equalizer circuit 43B is for the SECAM system, and in addition to the characteristic compensation function, it also has the divided color signal CD.
It has a trap function.

The FM-modulated luminance signal YFM output from the equalizer circuits 43A and 43B is the a side of the changeover switch 44,
It is supplied to the FM demodulator 45 via the b side. Similar to the changeover switch 42, the changeover switch 44 is connected to the side a when the reproduced video signal is related to the NTSC system and the PAL system, and is connected to the side b when the reproduced video signal is related to the SECAM system. The FM-modulated luminance signal YFM output from the changeover switch 44 is supplied to the FM demodulator 45 and demodulated, and the luminance signal Y output from the FM demodulator 45 is supplied to the adder 47 via the de-emphasis circuit 46. To be done.

The reproduction video signal amplified by the reproduction amplifier 41 is supplied to the low pass filter 48. When the reproduced video signal is of the NTSC system or PAL system, the low frequency conversion color signal CL is extracted, and when it is of the SECAM system, the divided color signal CD is extracted. The output signal of the low-pass filter 48 is the changeover switch 4
It is supplied to the frequency converter 50 via the a side of 9. The change-over switch 49 is connected to the a side when the reproduced video signal is related to the NTSC system and the PAL system, and S
When it is related to the ECAM system, it is connected to the b side.

Reference numeral 51N is a crystal oscillator having the same oscillation frequency as the NTSC color subcarrier frequency (3.58 MHz), and is connected to the frequency converter 50 via the n side of the changeover switches 52 and 53. Reference numeral 51P is a crystal oscillator having the same oscillation frequency as the PAL color subcarrier frequency (4.43 MHz), and is connected to the frequency converter 50 via the p side of the changeover switches 52 and 53. Changeover switch 52, 53
Is similar to the changeover switch 49, the reproduced video signal is NTS.
When it is related to the C method and the PAL method, n
Side, p side is switched. As a result, the frequency converter 50 outputs the color signal C having a color subcarrier frequency of 3.58 MHz when the reproduced video signal is in the NTSC system, and the color signal C in the PAL system. A color signal C having a carrier frequency of 4.43 MHz is output.

Color signal C output from the frequency converter 50
Is supplied to the phase shift circuits 55N and 55P via the n side and the p side of the changeover switch 54. The changeover switch 54 is
When the reproduced video signal is related to the NTSC system and the PAL system, it is switched to the n side and the p side, respectively. The phase shift circuit 55N is for the NTSC system, and the phase shift circuit 55P is for the PAL system. In these phase shift circuits 55N and 55P, the phases shifted by the phase shift circuits 25N and 25P of the recording system are restored as described above.

The color signal C whose phase is restored by the phase shift circuits 55N and 55P is passed through the n-side and p-side of the changeover switches 56 and 57, respectively, to the comb filters 58N and 58P for removing the crosstalk component from the adjacent track. Supplied. The comb filter 58N is for the NTSC system, and is configured using a delay circuit having a delay time of one horizontal period (1H) as is well known. The comb filter 58P is for the PAL system, and as is well known, it has two horizontal periods (2H).
It is configured using a delay circuit having a delay time of.
The changeover switches 56 and 57 output the reproduced video signal to NT.
When it is related to the SC system and the PAL system, it is switched to the n side and the p side, respectively.

The color signals C of the NTSC system and the PAL system, in which the crosstalk components from the adjacent tracks are removed by the comb filters 58N and 58P, are changed over by the changeover switch 5 respectively.
It is supplied to the a side of the changeover switch 60 via the n side and the p side of 9. Similarly to the selector switch 57, the selector switch 59 is switched to the n-side and the p-side, respectively, when the reproduced video signal is related to the NTSC system and the PAL system.

Further, the frequency-divided color signal CD obtained on the b side of the changeover switch 49 is multiplied by 4 by the multiplication circuit 61. The SECAM type color signal C output from the multiplication circuit 61 is supplied to a fixed terminal on the b side of the changeover switch 60. The changeover switch 60 uses the NTSC system and PA for the reproduced video signal.
When it is related to the L system, it is connected to the a side, and the SEC
When it is related to the AM system, it is connected to the b side. As a result, the changeover switch 60 outputs the color signal C of each system when the reproduced video signal is of the NTSC system, the PAL system, or the SECAM system.
The color signal C output from the changeover switch 60 is added to the adder 47.
To the luminance signal Y, and an output color video signal SVout is obtained from the adder 47.

Returning to FIG. 1, the terminals 103 of the TV 100,
104 and 107 are V with the cable 300, respectively.
Connected to terminals 202, 204, 205 of TR200.

In the above configuration, the index signal ID indicating the standard method of the color video signal SVa output from the tuner section 101 of the TV 100 is the ID output circuit 106.
From the VTR 200 via the terminals 107 and 205.
Is supplied to the ID detection circuit 206 of the
The selector switches of the recording signal processing system (see FIG. 2) of the deck unit 201 are automatically switched to a state corresponding to the standard system of the color video signal SVa by 06. Therefore, the color video signal SVa output from the tuner unit 101 of the TV 100 can be satisfactorily recorded by setting the deck unit 201 in the recording state without the user manually setting the state of the deck unit 201 of the VTR 200. it can.

An index signal ID indicating the standard system of the color video signal SVa output from the tuner unit 101 of the TV 100, that is, the standard system corresponding to the TV 100 (monitor unit 105) is output from the ID output circuit 106 to the terminal 107 and the terminal. I of VTR 206 through 205
The standard system of the color video signal SVo ′ supplied to the D detection circuit 206 and output from the converter 203 of the VTR 200 is automatically set. Therefore, the user does not manually set the standard method of the color video signal SVo ′ output from the converter 203, but brings the VTR 200 into the reproduction state and the changeover switch 102 of the TV 100.
Is connected to the b side, an image by the reproduced color video signal SVo output from the deck unit 201 is displayed on the monitor unit 10.
Good display is possible with 5.

Next, a second embodiment of the present invention will be described with reference to FIG. In this example, a television receiver (multi-system TV) 400 and a multi-system VTR 200 compatible with a plurality of standard systems (three systems of NTSC system, PAL system, and SECAM system in this example) and a multi-system VTR 200 are connected by a cable 3.
This is an example of a video system configured by connecting with 00.

First, the TV 400 will be described. 40
Reference numeral 1 denotes a tuner section that outputs a plurality of standard type color video signals SVa. The color video signal SVb output from the tuner unit 401 is supplied to the fixed terminal on the a side of the changeover switch 402 and the line-out terminal 40.
3 is supplied.

The color video signal supplied to the line-in terminal 404 is supplied to the fixed terminal on the b side of the changeover switch 402. The changeover switch 402 has a changeover control signal S corresponding to an operation by a user's key operation unit (not shown).
W is supplied and its switching is controlled. The color video signal output from the changeover switch 402 is monitored by the monitor unit 40.
5 is supplied. The monitor unit 405 is a luminance / color processing circuit,
It is provided with a deflection circuit, a picture tube, etc., and displays an image by a color television signal. The monitor unit 405 corresponds to three systems of NTSC system, PAL system, and SECAM system, and the state is switched by the discrimination output of the system discrimination circuit described later.

FIG. 5 shows the configuration of the signal processing system of the monitor unit 405. (In the figure, input color video signal)
SVi is supplied to the Y / C separation circuits 72N, 72P and 72S via the n side, the p side and the s side of the changeover switch 71, respectively. The Y / C separation circuits 72N, 72P, and 72S are for separating the luminance signal Y and the color signal C from the NTSC system, PAL system, and SECAM system color video signals, respectively. The changeover switch 71 uses the standard system of the input color video signal SVi as NTSC system, PAL system, and S system.
In the case of the ECAM system, it is switched to the n side, the p side, and the s side, respectively.

The luminance signals Y output from the Y / C separation circuits 72N, 72P and 72S are output to the changeover switch 73, respectively.
Are supplied to the fixed terminals on the n-side, the p-side, and the s-side. Like the changeover switch 71, the changeover switch 73 also has an n-side, a p-side, and a n-side when the standard system of the input color video signal SVi is the NTSC system, the PAL system, or the SECAM system, respectively.
Switched to the s side.

The luminance signal Y output from the changeover switch 73 is supplied to the sync separation circuit 74, and the horizontal separation signal HD is output from the sync separation circuit 74. The horizontal sync signal HD output from the sync separation circuit 74 is divided by the frequency dividers 76A and 76 via the a side and the b side of the changeover switch 75.
Supplied to B. The changeover switch 75 is connected to the a side when the standard system of the input color video signal SVi is the NTSC system, and is connected to the b side when the standard system of the input color video signal SVi is the PAL system and the SECAM system.

The frequency division ratio of the frequency divider 76A is 1 / 262.5, and the standard method of the input color video signal SVi is NTSC.
In the case of the system, the frequency divider 76A outputs the NTSC system vertical synchronizing signal VD (60 Hz). Also,
The frequency division ratio of the frequency divider 76B is 1 / 312.5, and the standard system of the input color video signal SVi is the PAL system or SE.
When the CAM system is used, PAL is applied from the frequency divider 76B.
And SECAM vertical sync signal VD (50H
z) is output.

The vertical synchronizing signal VD output from the frequency dividers 76A and 76B is output via the a side and the b side of the changeover switch 77. The changeover switch 77 is similar to the changeover switch 75 in that the standard method of the input color video signal SVi is NTSC.
If it is the system, it is connected to the a side, and the PAL system and S
In the case of the ECAM system, it is connected to the b side.

Thus, when the standard system of the input color video signal SVi is the NTSC system, the PAL system or the SECAM system, the synchronizing signals HD and VD corresponding to the respective systems are provided.
Is output. The synchronization signals HD and VD are supplied to the deflection system and the like as reference synchronization signals for use.

The color signals C output from the Y / C separation circuits 72N and 72P are n of the changeover switch 78, respectively.
Side and p-side fixed terminals. This changeover switch 7
8 is the standard system of the input color video signal SVi is NTSC
In the system and the PAL system, switching is made to the n side and the p side, respectively. The color signal C output from the changeover switch 78 is supplied to the decoder (color demodulation circuit) 79.

Reference numeral 80N is a crystal oscillator having the same oscillation frequency as the NTSC color subcarrier frequency (3.58 MHz), and the decoder 7 is provided via the n side of the changeover switches 81 and 82.
9 is connected. 80P is a crystal oscillator having the same oscillation frequency as the color subcarrier frequency (4.43 MHz) of the PAL system, and is connected to the decoder 79 via the p side of the changeover switches 81 and 82. Similar to the selector switch 78, the selector switches 81 and 82 are respectively n when the standard system of the input color video signal SVi is the NTSC system or the PAL system.
Side, p side is switched.

In the decoder 79, although not shown, synchronous detection is performed by the demodulation axes of 0 ° and 90 ° of the reference subcarrier (3.58 MHz in the NTSC system, 4.43 MHz in the PAL system), and the blue difference signal B is obtained. -Y and the red color difference signal R-Y are obtained. The red color difference signal RY output from the decoder 79 is directly supplied to the fixed terminal on the a side of the changeover switch 83, and is also supplied to the fixed terminal on the a ′ side of the changeover switch 83 via the inverter 84. Further, the blue color difference signal BY output from the decoder 79 is supplied to the a side of the changeover switch 85.

The color signal C output from the Y / C separation circuit 72S is supplied to the decoder (color demodulation circuit) 86. The decoder 86 is for the SECAM system and has an FM demodulator as is well known. This decoder 86
The red color difference signal R-Y output from the output is supplied to the fixed terminal on the b side of the changeover switch 83, and the blue color difference signal BY is supplied to the fixed terminal on the b side of the changeover switch 85.

The changeover switch 83 is connected to the a side when the standard system of the input color video signal SVi is the NTSC system, and is connected to the b side when the SECAM system is used. In the case of the PAL system, each line is connected to the a side and the a'side. This is because in the PAL system, the color subcarrier of the red color difference signal R-Y is phase-inverted line by line as is well known, and the red color difference signal R-Y needs to be phase inverted line by line. Is. As a result, the red color difference signal RY is obtained from the changeover switch 83 regardless of the standard method of the input color video signal SVi.

The selector switch 85 is connected to the a side when the standard system of the input color video signal SVi is the NTSC system and the PAL system, and is connected to the b side when the SECAM system is used. As a result, the blue color difference signal BY is obtained from the changeover switch 85 regardless of the standard method of the input color video signal SVi.

Although not shown, the luminance signal Y and the color difference signals RY and BY output as described above are converted into three primary color signals R, G, and B by, for example, a matrix circuit. An image based on the input color video signal SVi is displayed on the picture tube by using R, G and B.

Returning to FIG. 4, the color video signal SVb output from the tuner unit 401 is the a of the changeover switch 406.
Side fixed terminal. The color video signal supplied to the line-in terminal 404 is supplied to the fixed terminal on the b side of the changeover switch 406. This changeover switch 40
6, a changeover control signal SW is supplied to the changeover switch 40.
When 2 is connected to the a side and the b side, they are connected to the a side and the b side, respectively.

The color video signal output from the changeover switch 406 is supplied to the system discrimination circuit 407. In the system discriminating circuit 407, the NTSC system, P
The AL system and the SECAM system are discriminated. For example, when the field frequency is 60 Hz, the NTSC system is used, and when the field frequency is 50 Hz, the PAL system or SECAM is used.
It is a method. When the field frequency is 50 Hz and there is a color burst, the PAL system is used, and when there is no color burst, the SECAM system is used.

The discrimination signal output from the system discrimination circuit 407 is supplied to the monitor section 405, and the discrimination signal controls the connection of the changeover switch of the signal processing system (see FIG. 5) of the monitor section 405. . Further, the discrimination signal output from the system discrimination circuit 407 is supplied to the index signal output circuit (ID output circuit) 408. The switching control signal SW is supplied to the ID output circuit 408.

When the changeover switches 402 and 406 are connected to the side a, the index signal I indicating the standard system discriminated by the system discriminating circuit 407 is output from the ID output circuit 408.
D is output. For example, the index signal is composed of a 3-bit code, and is "000" in the NTSC system,
It is set to "010" in the PAL system and "011" in the SECAM system. On the other hand, the changeover switches 402, 4
When 06 is connected to the b side, the ID output circuit 408 outputs an index signal of a specific code, for example, “111”. The index signal ID output from the ID output circuit 408 is the index output terminal 409.
Is supplied to.

The multi-method VTR 200 is constructed in the same manner as in the example of FIG. 1, and the terminals 403, 404, 409 of the TV 400 are used.
Are respectively connected to the terminals 202, 204, 205 of the VTR 200 by the cable 300.

In the above configuration, the changeover switches 402 and 406 of the TV 400 are connected to the a side, and the tuner section 40
The color video signal SVb output from the monitor unit 40
Consider a case where the color video signal SVb is recorded on the deck section 201 of the VTR 200 while being supplied to the No. 5 to display an image.

In this case, since the color video signal SVb is supplied to the system discriminating circuit 407 via the side a of the changeover switch 406, the system discriminating circuit 407 obtains a discriminating signal indicating the standard system of the color video signal SVb. . This discrimination signal is supplied to the monitor unit 405 to switch the signal processing system as described above, so that the color video signal S
An image is satisfactorily displayed on the picture tube of the monitor unit 405 regardless of the standard method of Vb.

Further, the discrimination signal output from the system discrimination circuit 407 is supplied to the ID output circuit 408, and the index signal ID indicating the standard system of the color video signal SVb.
From the ID output circuit 408 to terminals 409 and 205
Is supplied to the ID detection circuit 206 of the VTR 206, and the ID detection circuit 206 causes the changeover switches of the recording signal processing system (see FIG. 2) of the deck unit 201 to be in a state corresponding to the standard system of the color video signal SVa. It can be switched automatically. Therefore, the color video signal SVa output from the tuner unit 401 of the TV 400 can be satisfactorily recorded by setting the deck unit 201 in the recording state without manually setting the state of the deck unit 201 of the VTR 200.

Next, the changeover switch 402 of the TV 400,
Consider a case where 406 is connected to the b side and the color video signal SVo ′ obtained at the line-out terminal 204 of the VTR 200 is supplied to the monitor unit 405 to display an image.

In this case, since the color video signal SVo 'is supplied to the system discriminating circuit 407 through the side b of the changeover switch 406, the system discriminating circuit 407 outputs a discriminating signal indicating the standard system of the color video signal SVo'. can get. Since this discrimination signal is supplied to the monitor unit 405 to switch the signal processing system as described above, the monitor unit 40 can be used regardless of the standard system of the color video signal SVo '.
An image is satisfactorily displayed on the picture tube No. 5.

In this case, the index signal of a specific code is output from the ID output circuit 408, and the index signal ID is supplied to the ID detection circuit 206 via the terminals 409 and 205. The converter 203 does not perform system conversion processing,
The color video signal SVo output from the deck unit 201 is directly output to the terminal 204 as the color video signal SVo ′. As a result, the converter 203 does not perform the format conversion processing, so that signal deterioration due to the format conversion processing can be prevented and the image quality can be improved.

In the above embodiment, the standard system of the color video signal is NTSC system, PAL system, SECA.
Although an example in which there are three M systems has been shown, in addition to these three systems, the present invention includes 4.43 NTSC system, PAL-M system,
Needless to say, the present invention can be similarly applied to a video system including a multi-system TV and a multi-system VTR that can deal with the PAL-N system and the like.

In this case, NTSC system, PAL system, S
The ECAM system, 4.43 NTSC system, PAL-M system, and PAL-N system are distinguished by using, for example, the field frequency (Hz), the presence or absence of color burst, the color subcarrier frequency (chroma frequency), and the color burst phase. This is performed according to the flowchart of FIG.

That is, in step ST1, it is determined whether the field frequency is 50 Hz or 60 Hz. When the frequency is 50 Hz, the process proceeds to step ST2 and 60
If it is Hz, the process proceeds to step ST4.

In step ST2, it is determined whether or not there is a color burst. SECA when there is no color burst
Determined as M method. If there is a color burst, the process proceeds to step ST3 and it is determined whether the chroma frequency is 3.58 MHz or 4.43 MHz. 3.58 MH
If it is z, it is determined to be the N-PAL system, while 4.43 is used.
When it is MHz, the PAL system is determined.

In step ST4, the chroma frequency is 3.
It is determined whether it is 58 MHz or 4.43 MHz. When it is 4.43 MHz, it is determined to be 4.43 NTSC system. If it is 3.58 MHz, step ST
In step 5, it is determined whether the color burst phase is 0 ° or 90 °. When it is 0 °, it is determined to be the NTSC system, and when it is 90 °, it is determined to be the M-PAL system.

FIG. 7 shows the NTSC system, the PAL system,
An example of a 3-bit code index signal ID corresponding to the SECAM system, 4.43 NTSC system, PAL-M system, and PAL-N system is shown. NTSC system is "000", 4.43 NTSC system is "001", PA
L method is "010", SECAM method is "011", P
The AL-M method is "100", and the PAL-N method is "10".
It is set to 1 ”. Here, the code “110” is not used and the code “111” is the specific code.

[0081]

According to the invention of claim 1, when a multi-system VTR is connected to the television receiver to record a color video signal output from the tuner section, the VTR side detects an index signal, The detection output can automatically set the recording system so as to match the standard system of the color video signal, and the user can avoid the trouble of manual setting.

According to the second aspect of the invention, when the multi-system VTR is connected to the television receiver (multi-system TV) and the color video signal output from the tuner section is recorded, the VTR side outputs the index signal. The recording system can be automatically detected and the recording system can be automatically set by the detected output so as to match the standard method of the color video signal, and the user can avoid the trouble of manual setting.

According to the third aspect of the present invention, when a multi-system VTR is connected to this television receiver and an image based on the reproduced color video signal output from the multi-system VTR is displayed on the monitor section, the index is set on the VTR side. By detecting the signal, the standard method of the output color video signal can be automatically set by the detection output so as to match the television receiver, and the user can avoid the trouble of manual setting.

According to the invention of claim 4, when a multi-system VTR is connected to this television receiver (multi-system TV) and an image by a reproduced color video signal outputted from the multi-system VTR is displayed on the monitor section. , The VTR side can detect the index signal, and the conversion output of the standard system in the converter can be prevented from being detected by the detected output, so that the signal deterioration due to the system conversion can be avoided and the image quality can be improved.

According to the fifth aspect of the present invention, when a television receiver is connected to the recording device and a color video signal output from the tuner section is recorded, the deck is adjusted so as to conform to the standard system of the color video signal. The recording system of the unit can be automatically set, and the user can avoid the trouble of manual setting.

According to the sixth aspect of the present invention, when a television receiver is connected to the reproducing apparatus and an image based on the reproduced color video signal is displayed on the monitor section, the standard system for the reproduced color video signal is the television receiver. It can be set automatically to suit the machine, and the user can avoid the hassle of manual setting.

According to the invention of claim 7, when a television receiver (multi-system TV) is connected to the reproducing apparatus and an image based on the reproduced color video signal is displayed on the monitor section thereof, the converter converts the standard system. Since no processing is performed, it is possible to avoid signal deterioration due to system conversion and improve image quality.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a first embodiment of the present invention.

FIG. 2 is a configuration diagram showing an example of a recording signal processing system of a deck section.

FIG. 3 is a configuration diagram showing an example of a reproduction signal processing system of a deck section.

FIG. 4 is a configuration diagram showing a second embodiment of the present invention.

FIG. 5 is a configuration diagram showing an example of a signal processing system of a monitor unit.

FIG. 6 is a flowchart showing a flow of system determination.

FIG. 7 is a diagram showing an example of an index signal ID.

[Explanation of symbols]

100 television receiver (single system TV) 101, 401 tuner section 102, 402, 406 changeover switch 103, 204, 403 line-out terminal 104, 202, 404 line-in terminal 105, 405 monitor section 106, 408 index signal output Circuit (ID output circuit) 107,409 Index output terminal 200 Multi system VTR 201 Deck section 203 Converter 205 Index input terminal 206 Index signal detection circuit (ID detection circuit) 300 Cable 400 Television receiver (multi system TV) 407 System discrimination circuit

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Minoru Yahiro Minoru 1-21-1 Ikenohata, Taito-ku, Tokyo Inside Aiwa Co., Ltd.

Claims (7)

[Claims] 1. A television receiver having a tuner section for obtaining a color video signal of a single standard system, and a monitor section for displaying an image based on the color video signal output from the tuner section. A television receiver comprising index signal output means for outputting an index signal indicating a standard system. 2. A tuner section for obtaining color video signals of a plurality of standard systems, a system discriminating means for discriminating a standard system of color video signals output from the tuner section, and a standard system discriminated by the system discriminating means. In a television receiver having a monitor section for displaying an image of a color video signal output from the tuner section, the index signal indicating the standard system discriminated by the system discriminating means. A television receiver comprising an index signal output means for outputting. 3. A television receiver having a monitor section for displaying an image based on a single standard type color video signal supplied to an input terminal, wherein an index signal for outputting an index signal indicating the single standard system. A television receiver comprising output means. 4. A system discriminating means for discriminating a standard system of a color video signal supplied to an input terminal, and a state switched according to the standard system discriminated by the system discriminating means and being supplied to the input terminal. A television receiver having a monitor unit for displaying an image based on a color video signal, comprising index signal output means for outputting an index signal of a specific code. 5. A recording apparatus having a deck section capable of recording color video signals of a plurality of standard systems, comprising index signal detecting means for detecting an index signal indicating the standard system of color video signals supplied to the deck section. A recording apparatus comprising: the state of the deck section switched according to the detection output of the index signal detecting means. 6. A reproducing apparatus having a deck section for outputting a color video signal of a predetermined standard system, and a converter for converting the standard system of the color video signal output from the deck section, an index indicating the standard system, etc. When the index signal detected by the index signal detecting means indicates the standard method, the standard method of the color video signal output from the converter is controlled according to the detection output. A reproducing device characterized by: 7. A reproducing device having a deck section for outputting a color video signal of a predetermined standard system and a converter for converting the standard system of the color video signal output from the deck section, an index indicating the standard system or the like. When the index signal detected by the index signal detection means is an index signal of a specific code, the converter does not perform system conversion according to the detection output. Characterizing playback device.