JPH11275602A - Transmission method, and output device and receiving device and recording medium thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transmission method of the TV signals which can discriminate the colorimetry by adding the identification information of a color representation expression in a vertical blanking period, i.e., a flyback period of the vertical scan of the TV signals. SOLUTION: The colorimetry identification information given from a vertical blanking period addition part 5 of TV signals is added to the TV signal, which are sent from a signal source 1 and shown in a color based on the prescribed colorimetry in a vertical blanking period. The TV signals to which the colorimetry information has been added are broadcast via a broadcast part 2. A receiver 3 receives those TV signals sent from the part 2, and a VBI discrimination part 6 separates the colorimetry information added in the vertical blanking period of TV signals and discriminates the colorimetry. A display 4 restores the TV signals into image signals, in response to the colorimetry sent from the part 6 and shows these image signals on a display screen.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for transmitting a television signal, a transmitter, a receiver, and a recording medium.

[0002]

2. Description of the Related Art Conventionally, a television signal has a so-called NTSC (national tsc) format in which the number of scanning lines in one frame is 525 and the number of fields displayed in one second is 60.
elevision system comitee) system is adopted as a standard system in Japan.

In the NTSC system, colorimetry, which is a color expression, is represented by, for example, RGB signals for luminance signals.
Is defined as Y = 0.30R + 0.59G + 0.11B.

On the other hand, high definition television (High Defin
As a so-called high-definition television (HDTV) system, a so-called 1125/60 standard is provided in which 1125 scanning lines display 60 fields per second.

In the HDTV system, colorimetry is defined as, for example, Y = 0.21R + 0.72G + 0.07B for a luminance signal.

As described above, the coefficients of the equation for obtaining the luminance signal from the three primary color signals are different between the NTSC television signal and the high-vision television signal. In general, the colorimetry, which is a color expression, is different between a television system having 525 scanning lines such as NTSC and a high-vision system.

[0007] Here, the colorimetry refers to various parameters such as a color expression formula specified for correct color reproduction in a color television system.

Therefore, when a television signal of a system of 525 scanning lines and a television signal of a high-vision system are input to a television receiver by a component signal composed of three primary color signals or luminance signals of RGB and two color difference signals. Even if horizontal synchronization and vertical synchronization are achieved, different colors are displayed for the same image.

Here, the color expression when the television signal is received by a receiver corresponding to a colorimetry different from the colorimetry of the television signal will be specifically described with reference to FIG.

The broadcasting unit 102 broadcasts a colorimetric A television signal from the signal source 101. Receiver 10
3 receives a television signal of colorimetry A from the broadcasting unit 102. The display 104 displays the receiver 10
3 is converted into an image signal such as an RGB signal in accordance with the color expression of the colorimetry A, and the image signal is displayed on a display screen.

The broadcasting unit 112 broadcasts the colorimetric B television signal from the signal source 111. Receiver 11
3 receives the colorimetric A television signal from the broadcasting unit 112. The display 114 displays the receiver 11
3 is converted into an image signal according to the color expression of the colorimetry B, and the image signal is displayed on a display screen.

If the colorimetry of the television signal does not match the colorimetry of the display for converting the television signal into an image signal, a normal color image may not be displayed.

For example, when the television signal of colorimetry B from the broadcasting unit 112 is received by the receiver 103, the television signal is restored to an image signal on the display 104 in accordance with the color expression of the colorimetry A. .

In this case, since the colorimetry A and the colorimetry B have different color representations, the color representation of the television signal of the colorimetry B restored by the colorimetry A in the receiver 103 is transmitted from the signal source 111 to the broadcasting circuit 112. It will be different from the given source image signal.

[0015]

The above-mentioned NT
Since the television signal wave and the horizontal frequency of the Hi-Vision signal are different from those of the SC system, it was possible to determine the horizontal frequency.

However, for example, the so-called 525p (progre
ssive) television signals are difficult to distinguish from high-vision television signals at the horizontal frequency.

Further, other signal formats such as 720p may appear in the future. For this reason, it is necessary to distinguish colorimetry between different signaling methods.

Further, even if the same signal format is used, two
It is also possible to have different types. This is especially true when converting high-definition video to 525p format.
This occurs when the HDTV colorimetry is used as it is in the 525 system.

In such a case, conventionally, colorimetry of the television signal could not be identified.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and is directed to a transmitting apparatus for transmitting a television signal capable of determining colorimetry, a receiving apparatus for determining the colorimetry of a received television signal, and a colorimeter. It is an object of the present invention to provide a recording medium on which a distinguishable television signal is recorded.

[0021]

In order to solve the above-mentioned problem, a transmission method according to the present invention uses a three-color signal obtained by synchronously scanning a moving image horizontally and vertically in a predetermined color expression. In a transmission method for transmitting a television signal obtained by synthesizing an image signal including a converted luminance signal and a color difference signal and a synchronization signal for scanning the image signal, a vertical blanking period, which is a blanking period of the vertical scanning of the television signal, is provided. The identification information of the color expression is added to the line erasing period.

A transmitting apparatus according to the present invention comprises: an image signal including a luminance signal and a color difference signal obtained by converting a three primary color signal obtained by synchronously scanning a moving image horizontally and vertically by a predetermined color expression;
In a transmitting apparatus for transmitting a television signal obtained by combining a synchronizing signal of the image signal with a synchronizing signal, the identification information of the color expression is added to a vertical blanking period which is a blanking period of the vertical scanning of the television signal. Identification information adding means,
Transmitting means for transmitting the television signal to which the identification information is added by the identification information adding means.

The receiving apparatus according to the present invention comprises: an image signal including a luminance signal and a color difference signal obtained by converting a three primary color signal obtained by horizontally and vertically synchronously scanning a moving image by a predetermined color expression;
A receiving apparatus for receiving a television signal to which identification information of the color expression is added during a retrace period of a vertical scan of a television signal obtained by synthesizing the television signal with a synchronization signal of the image signal. And identification information separating means for separating the identification information of the color expression from the vertical blanking period of the television signal from the receiving means.

According to the recording medium of the present invention, an image signal including a luminance signal and a color difference signal obtained by converting three primary color signals obtained by synchronously scanning a moving image horizontally and vertically by a predetermined color expression formula;
A television signal obtained by synthesizing a synchronizing signal for scanning the image signal with a television signal to which identification information of the above expression is added during a retrace period of vertical scanning of the television signal. It is.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a transmission method, a transmission device, a reception device, and a recording medium according to the present invention will be described.
This will be described with reference to the drawings.

As an embodiment of the present invention, a broadcasting and receiving system for broadcasting a television signal to which colorimetric identification information, which is a color expression, is added and receiving the broadcasted television signal will be described with reference to FIG. This will be described with reference to FIG.

In the case of an analog system using a normal television signal, broadcasting and reception of the television signal are performed as follows.
This is performed as indicated by A in FIG.

That is, for a television signal represented by color in a predetermined colorimetry from the signal source 1, a vertical blanking interval (vertical blank interleave period) of the television signal is applied.
val; VBI) The colorimetry identification information from the addition unit 5 is added to the vertical blanking period, and the television signal to which the colorimetry information is added is broadcast by the broadcasting unit 2.

The receiver 3 receives the television signal to which the colorimetric identification information has been added from the broadcasting unit 2,
The BI determiner 6 separates the colorimetry information added during the vertical blanking period of the television signal to determine the colorimetry, and the display 4 restores the television signal to an image signal according to the colorimetry from the VBI determiner 6. And display it on the display screen.

The display 4 decodes the television signal from the receiver 3 into an image signal by colorimetry in which the image signal is converted into a television signal by the signal source 1, so that the color representation of the original image signal can be obtained.

When transmitting a digitized television signal, the state is as shown in FIG. 1B.

That is, colorimetry data 15 is added to a television signal represented by color in a predetermined colorimetry from a signal source 11, and the television signal to which the colorimetry data 15 is added is converted to a digital broadcasting unit 12. Is digitized and broadcast.

[0033] The receiver 13 receives the digital broadcast from the digital broadcast section 12 and uses it as a television signal. At this time, the colorimetry data is separated, and the colorimetry identification information is added during the vertical blanking period of the television signal.

The VBI discrimination section 16 discriminates the colorimetry by separating the colorimetry identification information added during the vertical blanking period of the television signal from the receiver 13, and the display 4 displays the colorimetry from the VBI discrimination section 16. , The television signal is restored to an image signal and displayed on the display screen.

Also in this case, as in a normal broadcast shown in FIG. 1A, the display 14 displays the television signal from the receiver 13 by colorimetry in which the image signal is converted into the television signal by the signal source 11. Is converted into an image signal, so that the color representation of the original image signal can be obtained.

Here, the outline of the colorimetry discriminating section will be described with reference to the block diagram shown in FIG. The colorimetry discriminating unit is provided, for example, in a television receiver that restores an image from a broadcasted television signal.

The input luminance signal is supplied to the clamp circuit 21.
, And sliced by the slicer 22 to be provided to the gate circuit 23.

The luminance signal is separated into a horizontal synchronizing signal and a vertical synchronizing signal by a synchronizing separation circuit 24. The horizontal synchronizing signal is supplied to an in-line timing generation circuit 25 and a line counter 26. 26
Given to.

The in-line timing generation circuit 25 generates a predetermined timing in the line and gives the timing to the gate circuit 23. The line counter 26
The number of lines is counted for each vertical synchronization period based on the horizontal synchronization signal and the vertical synchronization signal from the synchronization separation circuit 24, and the result of this count is provided to the gate circuit 23.

The gate circuit 23 performs a gate process on the basis of the luminance signal which has been subjected to a predetermined process given from the slicer, the timing signal from the in-line timing generation circuit 25, and the count number from the line counter, and The colorimetric data is extracted and supplied to the color matrix switching circuit 27.

The color matrix switching circuit 27 operates according to the colorimetric data supplied from the gate circuit 23.
On the basis of the color expression of the colorimetry, the input luminance signal and two color difference signals are restored to RGB three primary color image signals.

As described above, the receiver measures the line position and timing from the synchronization signal and extracts the identification information.
Then, the colorimetric information is extracted from the identification information, and the calculated values of the color signal, the luminance signal processing circuit, and the RGB matrix circuit 27 are switched or set to a predetermined value. Thereby, a correct color expression is realized.

Next, a specific example of carrying colorimetry identification information in the vertical blanking period of a television signal will be described with reference to FIG.

In the vertical blanking period of the 525p television signal, a plurality of lines from the 525th line to the 6th line are followed by a vertical synchronization period from the 7th line to the 12th line. Then, following the vertical synchronization period, the vertical blanking period continues from the 13th line to the 44th line.

In the television signal of the 525p system, the identification information of the colorimetry is the fourth information in the vertical blanking period.
It is located on one line. This 41st line corresponds to the 29th line following the vertical synchronization period.

On the other hand, the vertical blanking synchronization period of the 1125i television signal is from line 1121 to line 40 as indicated by B in FIG. In the 1125i television signal, the colorimetry identification information is located on the 35th line of the vertical blanking period. Here, “i” of the 1125i system is
This indicates that the system is an interlace system.

525p television signal and 11
In the television signal of the 25i system, the position of the identification information of the colorimetry is a common position from the start point of the synchronization pulse in the vertical synchronization period of the vertical blanking period.

For this reason, even from television signals of different systems, identification information of colorimetry can be easily obtained by detecting the position of the television signal from the fulcrum in the vertical synchronization period of the vertical blanking period. it can. In addition,
The waveform of the identification information is also common as described later.

As described above, identification information for identifying colorimetry is placed in the vertical blanking period of a television signal. For example, it can be used commonly for 525p and 1125i, that is, for the 525p 41st line and the 1125i Hi-Vision 35th line.

Next, a specific waveform of the identification information added during the vertical blanking period of the television signal will be described with reference to FIG.

When the television signal is in the 525p format, the identification information is added to the 41st line in the vertical synchronization blanking period shown by A in FIG.

That is, 31.7 from the fall of the falling pulse to the fall of the next falling pulse.
In the 41st line of 5 μs, 22 periods of 5.778 μs to 0.963 μs in width continue from the falling of the falling pulse.

The third to 21st periods of the 22 periods correspond to the 20-bit bit string of the identification information, and each pulse becomes the reference level or the high level according to the content of the identification information. These 22 periods end 21.2 μs after the start of the first pulse. The first period corresponds to a reference pulse.

When the television signal is in the 1125i format, the identification information is added to the 35th line in the vertical blanking period B shown in FIG.

That is, 29.6 from the falling of the falling pulse to the falling of the next falling pulse.
In the 3 μs line, 5.778 μs after the falling of the falling pulse, or 5.18 from the rising of 0.593 μs after the falling of the falling pulse.
After 5 μs, 22 periods of 1-bit width of 0.963 μs continue.

The third to 22nd periods of the 22 periods correspond to the 20-bit bit string of the identification information, and each period is at the reference level or the high level in accordance with the content of the identification information. These 22 periods are 2 from the first period.
It ends after 1.2 μs. The first period corresponds to a reference pulse.

As described above, digital data of 22 bits including the reference bit corresponding to the reference pulse is transmitted. Then, using this 22-bit digital data, for example, the signal format is determined by the first 4 bits of the 20 bits from the third period to the 22nd period, and the colorimetry is determined by the next 2 bits. A specific example of the bit assignment will be described later.

As described above, since the identification information uses a common waveform, calorimetric information and the like from different types of television signals can be easily obtained.

Next, a first specific example of colorimetry discrimination and other bit assignment of identification information will be described with reference to FIG.

In the first specific example of the bit assignment, as indicated by A in 5, the identification information is described in a bit string composed of 20 bits.

That is, the LSB (least
format identification information is added to the first to fourth bits which are the first 4 bits from the siginificant bit), and colorimetry identification information is added to the 5th and 6th bits which are the following 2 bits. .

Specifically, as shown by B in FIG. 5, the identification information for colorimetry discrimination is the fifth bit, the sixth bit,
When the bit is “0,0”, the 525 system such as NTSC is used. When the bit is “0,1”, the high definition is used.
And "1, 1" represent undefined.

Next, a second specific example of the bit assignment will be described with reference to FIG.

In the second embodiment of the bit assignment,
As shown by A in FIG. 6, the identification information is described in a bit string composed of 20 bits.

That is, the first two bits from the LSB of this bit string, the first bit and the second bit, are aspect ratio information, the 12th bit from the third bit to the fourteenth bit are other data transmission bits, and the fifteenth bit. Bit to second
5 bits up to 0 bits are CRCC (cyclic redundanc).
y check code).

Here, the aspect ratio is the aspect ratio of the frame, which is 3: 4 in the NTSC system and 16: 9 in the high vision system. CRCC is an error detection code that uses the remainder of the generator polynomial to detect code errors.

The other bits for data transmission from the third bit to the fourteenth bit are, as shown in B in FIG. 6, four bits from the third bit to the sixth bit, a header indicating the contents of the last eight bits. The eight bits from the seventh bit to the fourteenth bit are used for data.

Specifically, the contents of the header are as shown in FIG.
It becomes as shown in. That is, the header, which is a bit string from the third bit to the sixth bit, is copyright information when "0000", a recording date when "0001", a recording time when "0010", and "0011"
Corresponds to the software length and remaining amount, "0100" corresponds to the signal format, and "0101" corresponds to the colorimetry.

When the header is "0101", the data is colorimetric. In this case, the data bits from the seventh bit to the fourteenth bit are “00000000”
Is undefined at the time of, and 5 at "0000001".
25 series, "0000010" indicates Hi-Vision, and "0000011" and subsequent indicate undefined.

Next, a third specific example of the identification information will be described with reference to FIG.

In the third specific example of the identification information, as shown in FIG. 7A, the first bit and the second bit of the 20-bit bit sequence are the same as in the second specific example of the identification information described above. Are used for aspect ratio information, the 3rd to 14th bits are used for other data transmission bits, and the 15th to 20th bits are used for CRCC.

However, as shown by B in FIG. 7, the third to fourteenth bits are used as a header indicating the contents of the last eight bits, but the seventh to tenth bits are in a signal format. The difference is that the eleventh and twelfth bits are assigned to colorimetry. The 13th and 14th bits are undefined.

The contents of the header from the third bit to the sixth bit are the same as in the second specific example of the identification information described above, as shown at A in FIG. 7, and therefore the description is omitted.

The bit sequence from the 7th bit to the 10th bit is undefined when the signal format is “0000”, 525i when “0001”, 525p when “0010”, 720i when “0011”,
"0101" corresponds to 1125i, and "0110" corresponds to 1125p.

The eleventh bit and the twelfth bit are 52 bits such as NTSC when "00" is set for colorimetry.
5 system, "01" corresponds to HDTV, and "10" and "11" correspond to undefined.

Next, a fourth specific example of the identification information will be described with reference to FIG.

In the fourth specific example of the identification information, FIG.
As shown in A in the figure, the contents assigned to the seventh to fourteenth bits are different from those of the third specific example of the identification information described above.

That is, the third to seventh bits constitute a header indicating the contents of the last eight bits, while the seventh and eighth bits have standard white color, and the ninth and first bits have
Gamma corresponds to the 0 bit, and a luminance equation corresponds to the 11th and 12th bits. The 13th and 14th bits are undefined.

Here, the standard white is white as a standard in color expression, the gamma is the non-linearity of the light-to-light conversion of the color CRT, and the luminance equation is an equation that gives luminance from the three primary color signals of RGB. Say.

Specifically, as shown in B in FIG. 8, the seventh and eighth bits of the standard white are “00”.
D65 when "01", D60 when "01"
When it is “10”, D70 corresponds to each.
When the seventh bit and the eighth bit are "11", it is undefined.

The gamma corresponds to 0.45 when the ninth and tenth bits are "00", 0.47 when "01", and 0.43 when "10". . If the ninth and tenth bits are “1”
When it is 1 ", it is undefined.

As the luminance equation, the ninth bit and the tenth bit
When the bit is “00”, 0.30R + 0.59G + 0.11B, and when the bit is “01”, 1.21R + 0.72G + 0.07B. It is undefined when the ninth and tenth bits are “10” and “11”.

In the third and fourth specific examples, the aspect ratio information is transmitted by the first two bits, and the subsequent 12 bits transmit 16 types of data in a time-division manner. That is, a total of 16 types of information are distinguished by a 4-bit header, and data according to the header is to be transmitted by subsequent 8 bits. For example, if colorimetry information is defined in 0101 of this header, colorimetric information can be transmitted in 8 bits.

Next, the recording medium will be described. This recording medium is obtained by synchronously scanning a moving image horizontally and vertically.
A television signal obtained by synthesizing an image signal including a luminance signal and a color difference signal obtained by converting a primary color signal by a predetermined color expression, and a synchronizing signal for scanning the image signal. A television signal to which the identification information of the above expression is added during the flyback period is recorded.

As a recording medium, for example, a CD-ROM
And a magneto-optical disk such as an MO, a so-called multimedia communication line.

As described above, the colorimetry, which is a color expression, is different between the 525 system such as NTSC and Hi-Vision. The distinction for this is made by the VBI signal. For example, new signal formats such as 525p can take any colorimetry,
It can be used for identification at that time.

Note that the identification information added to the television signal is not limited to the format described above.

As the information of the colorimetry, if it is already defined, information of a bit for distinguishing the information may be used, but each parameter of the colorimetry can be transmitted individually.

Also, together with information indicating other signal formats,
It can be sent as one header data.

Further, in the above description, the identification information is added to the position based on the synchronization pulse of the vertical synchronization signal in the blanking period of the television signal, but the present invention is not limited to this. The identification information can be added, for example, to a position based on the start point of the blanking period of the television signal.

[0091]

As described above, according to the present invention, since colorimetry is identified by colorimetry identification information of a common format added to a predetermined position of a television signal, even in a television signal of the same signal format, The color signal can be transmitted by a plurality of colorimetry. Therefore, mutual conversion between television signals having different colorimetry becomes possible.

Further, according to the present invention, since the identification information for identifying the colorimetry is added to the television signal, the side receiving this television signal is automatically set to the correct colorimetry. Therefore, it is possible to prevent a disadvantage caused by an incorrect setting or connection.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating transmission of colorimetry information.

FIG. 2 is a block diagram illustrating a configuration of a colorimetry determining unit of the receiver.

FIG. 3 is a time chart showing a position where identification information is inserted into a television signal.

FIG. 4 is a time chart showing a common VBI waveform.

FIG. 5 is a first bit assignment for colorimetry discrimination.
It is a figure showing the example of.

FIG. 6 shows a second bit assignment for colorimetry discrimination.
It is a figure showing the example of.

FIG. 7 shows a third bit assignment for colorimetry discrimination.
It is a figure showing the example of.

FIG. 8 shows a fourth bit assignment for colorimetry discrimination.
It is a figure showing the example of.

FIG. 9 is a diagram showing inconveniences due to differences in colorimetry.

[Explanation of symbols]

2 Broadcasting section, 4 receiving section, 5 VBI adding section, 6 V
BI discriminator, 24 sync separation circuit, 23 gate circuit,
27 color matrix switching circuit

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[Procedure amendment]

[Submission date] May 26, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Name of invention

[Correction method] Change

[Correction contents]

Patent application title: TRANSMISSION METHOD, OUTPUT DEVICE, RECEIVER, AND RECORDING MEDIUM

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 3

[Correction method] Change

[Correction contents]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] Claim 4

[Correction method] Change

[Correction contents]

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0001

[Correction method] Change

[Correction contents]

[0001]

The present invention relates to a method for transmitting a television signal, an output device, a receiving device, and a recording medium.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction contents]

In this case, since the colorimetry A and the colorimetry B have different color representations, the color representation of the television signal of the colorimetry B restored by the colorimetry A in the receiver 103 is transmitted from the signal source 111 to the broadcasting circuit 112. It is different from the given original image signal.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction contents]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has an output device for outputting a television signal capable of determining colorimetry, a receiving device for determining colorimetry of a received television signal, and a colorimeter. It is an object of the present invention to provide a recording medium on which a distinguishable television signal is recorded.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0022

[Correction method] Change

[Correction contents]

An output device according to the present invention comprises: an image signal including a luminance signal and a color difference signal obtained by converting three primary color signals obtained by synchronously scanning a moving image horizontally and vertically by a predetermined color expression;
An output device for outputting a television signal synthesized with a synchronization signal for scanning the image signal, wherein the identification information of the color expression is added to a vertical blanking period which is a blanking period of the vertical scanning of the television signal. Identification information adding means,
Output means for outputting a television signal to which identification information has been added by the identification information adding means.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0025

[Correction method] Change

[Correction contents]

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a transmission method, an output device, a receiving device, and a recording medium according to the present invention will be described.
This will be described with reference to the drawings.

Claims (9)

[Claims] An image signal including a luminance signal and a color difference signal obtained by converting a three primary color signal obtained by synchronously scanning a moving image horizontally and vertically by a predetermined color expression, and a synchronous signal for scanning the image signal A transmission method for transmitting a television signal obtained by combining the color expression formula with the color expression expression identification information during a vertical blanking period, which is a vertical scanning blanking period of the television signal. . 2. The apparatus according to claim 1, wherein the identification information is added to a common position of a fixed number of lines based on a vertical synchronization pulse in a vertical blanking period of the television signal, and uses a common waveform. 2. The transmission method according to 1. 3. An image signal including a luminance signal and a color difference signal obtained by converting three primary color signals obtained by synchronously scanning a moving image horizontally and vertically by a predetermined color expression, and a synchronization signal for scanning the image signal. A transmitting apparatus for transmitting a television signal obtained by combining the above-mentioned formulas, wherein identification information adding means for adding the identification information of the color expression to a vertical blanking period, which is a blanking period of vertical scanning of the television signal, A transmitting unit for transmitting a television signal to which the identification information is added by the identification information adding unit. 4. The identification information added to the television signal by the identification information adding means is added to a common position of a fixed number of lines with respect to a vertical synchronization pulse in a vertical blanking period of the television signal. The transmitting apparatus according to claim 3, wherein a common waveform is used. 5. An image signal including a luminance signal and a color difference signal obtained by converting three primary color signals obtained by synchronously scanning a moving image horizontally and vertically by a predetermined color expression, and a synchronous signal for scanning the image signal. And a receiving device for receiving the television signal to which the identification information of the color expression is added during a vertical scanning retrace period of the television signal obtained by combining Receiving means for separating identification information of a color expression formula from a vertical blanking period of a television signal from the means. 6. The identification information separated from the television signal by the identification information separation means is added to a common position of a fixed number of lines with respect to a vertical synchronization pulse in a vertical blanking period of the television signal. The receiving device according to claim 5, wherein a common waveform is used. 7. The apparatus according to claim 5, further comprising color reproducing means for reproducing three primary color signals from a luminance signal and a color difference signal of a television signal in accordance with a color expression formula based on the identification information from said identification information separating means. Receiver. 8. An image signal including a luminance signal and a color difference signal obtained by converting three primary color signals obtained by synchronously scanning a moving image horizontally and vertically by a predetermined color expression, and a synchronization signal for scanning the image signal. And a television signal in which the identification information of the above expression is added during a retrace period of vertical scanning of the television signal. 9. The method according to claim 8, wherein the identification information is added to a common position of a fixed number of lines based on a vertical synchronization pulse in a vertical blanking period of the television signal, and uses a common waveform. Item 10. The recording medium according to Item 8.