JPH01286682A - Recording and reproducing system - Google Patents

Abstract

PURPOSE:To obtain a reproduced picture without the sense of incompatibility by inserting a graphic code including picture information as a sub-code, recording it to a recording medium and mixing a signal in accordance with the graphic code into a video format signal at the time of performance. CONSTITUTION:A composite disk 20 is composed of a CD area into which a sub-code including picture information is inserted is recorded and a video area into which a video format signal and a signal into which a sub-code including the picture information are inserted are inserted. A reading signal from the disk 20 is supplied to a video format signal demodulating processing circuit 30 and a coding information signal demodulating processing circuit 31 and the signal supplied to the circuit 31 is stored into a picture memory device 55. When a stationary picture reproducing command is generated during the reproduction of the video area, the output from the circuit 30 is supplied to a video switch 33. Here, when a TCT instruction is decoded, the mixing ratio of the output of the device 55 in the switch 33 and the output from the circuit 30 is controlled by the output of a TCT 66. Consequently, the reproduced picture abundant in the change and without the sence of incompatibility can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a method for recording and reproducing image information on a recording medium such as a video disc or a digital audio disc.

BACKGROUND ART A method has been proposed for recording and reproducing image information as a subcode on a digital audio disk having an outer diameter of about 12 cm, which is generally called a compact disk (hereinafter abbreviated as CD). The subcode is formed of 8 bits, and the bit groups forming this subcode are P, Q, R,
S%T, U, V.

It is divided into 8 channels of W. In the method of recording and reproducing image information as a subcode, as shown in Figure 27, the data corresponding to the image information is formed by 6 bits of channels R-W of the 8 bits forming the subcode to form one symbol. 98 symbols are treated as one block. Two of these 98 symbols are used as synchronization signals, and 24 symbols obtained by dividing the remaining 96 symbols into four are the minimum unit of data [pack (
Pack)] and constitutes one image processing command.

The first symbol of these 24 symbols (hereinafter referred to as symbol O) indicates the mode. Symbol 1 following symbol 0 indicating this mode is an instruction (IN5TRUCTION) indicating the type of instruction. Symbol 3 and symbol 4 following the instruction are parity Q, which is an error correction code. Each symbol from symbol 4 to symbol 19 following parity Q forms a data field and includes color information and the like. Each symbol from symbol 20 to symbol 23 following the data field is parity P, which is an error correction code for protecting the information in the pack.

Modes include zero mode, line gelafix mode,
There are four types of modes: TV graphics mode and user mode. The zero mode is a mode for when, for example, no operation is to be performed on the display screen, that is, when it is desired to leave the image as it is, and all data in the pack is 0.

The line gala fix mode is a mode in which a liquid crystal display or the like is installed on the front of the player to display song descriptions, etc., and as shown in Fig. 24 [pixels]
A horizontally long screen is constructed. Note that a pixel refers to the smallest pixel that can be displayed, and is divided into 6 pixels in the horizontal (CoLUMN) direction and 1 pixel in the vertical (ROM) direction.
Normally, image processing is performed for each screen constituent unit called a FONT, which is divided into two pixels.

The number of fonts that can be displayed in this line galley fix mode is 48 in the horizontal direction and 2 in the vertical direction, which is called a screen area. Then, for the scrolling function, an image is created by a memory having an address corresponding to each pixel on the screen of 50 [font] horizontally x 4 [font] vertically, which is obtained by adding one font to the top, bottom, left and right of the outside of the screen area. Subcodes are formed to perform the processing. Note that the area outside the screen area is called a border.

The TV graphics mode is a mode for displaying images on the TV screen, and as shown in FIG.
A screen of 8 [pixels] x 192 [pixels] vertically is constructed. The number of fonts that can be displayed in this TV graphics mode is 48 in the horizontal direction and 16 in the vertical direction. Also, in this TV graphics mode, there is an address corresponding to each pixel on the screen of 50 [font] horizontally x 18 [font] vertically, which is obtained by adding one font to the top, bottom, left and right of the outside of the screen area. A sub-image is formed to perform image processing using memory.

Examples of image processing instructions include instructions to fill the entire screen with a certain color, instructions to draw a picture using two different colors for one font on the screen, and instructions to move the entire screen vertically or horizontally. .

Of the 8 bits forming the subcode, the channel Q bit contains time information corresponding to the track length from the beginning of the program area of the CD to a predetermined location of each information data recorded, and indicates the recording position. It forms address time data that can be used as position data. Further, the bits of channel P form data including inter-song information.

As described above, in the method of recording and reproducing image information as a subcode, the time required to display one font on the screen is approximately 3.3/1000 seconds, and the resulting image is 48X
It takes about 2.5 seconds to display 16 characters. For this reason,
It is not possible to record or play back images that involve movement, and
Since the maximum number of colors that can be used within a screen is 16, the conventional method has the disadvantage that the resulting reproduced image is monotonous.

Therefore, if you try to obtain a reproduced image with a rich variety by mixing a signal corresponding to the image information recorded as this subcode with a separately generated video format signal, If there is no relationship between the video format signals, the resulting reproduced image will look strange, so it is necessary to manually match the timing of starting the generation of the video format signal with the signal corresponding to the image information recorded as a subcode. It has not been easy to obtain reproduced images that are rich in variation and do not give an unnatural feeling.

Summary of the Invention The present invention has been made in view of the above points, and includes:
An object of the present invention is to provide a recording and reproducing method capable of obtaining reproduced images on a package that are rich in variation and do not give a sense of discomfort.

The recording and reproducing method according to the present invention inserts a graphic code containing image information in addition to a video format signal and a coded information signal as a subcode of the coded information signal and records it on a recording medium. It is characterized by mixing a signal according to the code into a video format signal.

EXAMPLES Hereinafter, examples of the present invention will be described in detail with reference to FIGS. 1 to 26.

First, as shown in FIG. f
+ (GRAPHIC8MODE WITHMOTIO
Set the code to be inserted as symbol 0 to specify NPICTURE).

The screen configuration in graphics mode with motion picture is the same as that in TV graphics mode, and includes a load transparency control φ table (LOAD TRAN) configured as shown in Figure 2.
There is an instruction called SPARENCY C0NTR0L TABLE). This load transparency control table instruction is an instruction that specifies the mode of each pixel on the screen.

There are three modes specified by this command: transparent mode, mixed mode, and non-transparent mode. In these three types of modes, the mixing ratio of the video format signal obtained by the subcode and the video format signal multiplexed and recorded together with the coded information signal including this subcode is set to a different value.

Each bit of channel RW of each symbol from symbol 4 to symbol 8 and channel R1S of symbol 9 is each bit designated by each color registered as color number 0 to color number 15. Codes TCB-0 to TCB-15 specifying the mode for pixels
is formed. Figure 3 shows these codes TCB-0~
The correspondence between the bit pattern of TCB-15 and each mode and the mixing ratio in each mode are shown.

In addition, 1 from the empty number “Om” to the empty number “15”
The 6 colors are Load Color Lookup Table Color 0 to Color 15 in TV graphics mode (
LOAD CLUT C0LOURO~C0LOUR1
5) Set by command. The load color lookup table Color 0 to Color 15 has a configuration as shown in FIG. 4, and the contents of the color lookup table indicate the color of the preset color number or the foreground/background color number. This is an instruction to set. It is necessary to specify 16 colors in total, but the colors are RG
Since each B has 4 bits, two symbols are required to set one color, and only eight colors can be set in one back. For this reason, this command is divided into two commands that respectively designate the first eight colors and the latter eight colors.

The instruction code for the first eight colors, Color 0 to Color 7, is '30', and the instruction code for the latter half, Color 8 to Color 15, is 'at'. The color combination for each color number is red:
Color is represented by 4 bits of channels R-U of even symbols assigned to one number, and green is represented by 2 bits of channels v and W following even-numbered symbols channels R to U, and channel R% of the next odd-numbered symbol. It is represented by 2 bits of S, a total of 4 bits, and the blue color is represented by the following channel T-
It is represented by 4 bits of W. Therefore, there are 2' (-16) gray scales for each color, and since they are RGBB colors, it is possible to mix 16' (-4096) colors. Note that the gray scale "oooo" corresponds to the darkest state, and the gray scale "1111°" corresponds to the brightest state.

Also, write font foreground/background (WRIT
E PONT PORE GROUND/BACKGROUND
The UND) instruction has a configuration as shown in FIG. 5, and is an instruction to write the font data of symbols 8 to 19 at the row address defined by symbol 6 and the column φ address defined by symbol 7. It is. For pixels with font data “02”, “color 〇”
(COLORO)" is specified as the background color. For a pixel with 1° font data, "Color 1 (COLOR)" is specified as the background color.
The color with the first color number determined by "OR1)" is designated as the foreground Φ color. At this time, nine sub-picture channels can be designated by the four bits of channels R and S of symbol 4 and symbol 5. A maximum of 16 image channels can be specified. By specifying these image channels, 16 types of images can be recorded and the user using the disk can select the desired image channel and play it back. can.

FIG. 6 shows a composite disc on which a digital audio signal as a coded information signal into which a subcode containing image information is inserted as described above is recorded. In the figure, a composite disc 20 has a first area (hereinafter referred to as CD area) 20a on the inner circumference side in which a digital audio signal into which a subcode including image information is inserted is recorded, and a first area 20a on the inner circumferential side (hereinafter referred to as a CD area), and an FM-modulated video area. It has a second area (hereinafter referred to as a video area) 20b in which a format signal and a digital audio signal into which a subcode including image information is inserted are recorded in a superimposed manner. Video format signals contain higher frequency components than PCM signals,
When recording signals to the video area 20b, the CD area 20a
It is necessary to make the rotational speed of the disc higher than when recording to the CD area, and as a result, when playing back, the rotational speed of the disc in the video area 20b is higher than that in the CD area 20g. Must. The rotational speed is several hundred rps in the CD area 20a, whereas in the video area 20b, the rotation speed is extremely high, reaching over 2,000 rps at the innermost periphery of the area and over 1,000 rps at the outermost periphery. Becomes speed.

A lead-in area is provided at the beginning of each of the CD area 20a and the video area 20b, and each lead-in area contains an index code related to the recorded content of each area, for example, each small part constituting each area. A first and second index code group configured corresponding to each area is recorded by repeating an index code indicating the start and end time, etc. of the audio lead-in area.
Type information indicating whether the disc is a composite disc is also included.

FIG. 7 shows a disc player for reproducing information recorded on the composite disc as described above. In FIG. 7, disk 2
0 is rotationally driven by a spindle motor 21, and its recorded information is read by an optical pickup 22.

The pickup 22 includes an optical system including a laser diode, an objective lens, a photodetector, etc., and a focus actuator that drives the objective lens in the optical axis direction with respect to the information recording surface of the disk 20.
A tracking actuator and the like are built in to bias the beam spot (information detection point) emitted from the recording track 2 in the radial direction of the disk. The pickup 22 is mounted on a slider 23 that is movable in the radial direction of the disk, and the slider 23 is linearly driven by a transmission mechanism 25 that uses a slider motor 24 as a drive source and is composed of a combination of a rack and a pinion, for example.

A read RF (high frequency) signal output from the pickup 22 is supplied to a video format signal demodulation processing circuit 30 and a coded information signal demodulation processing circuit 31 via an RF amplifier 26.

The video format signal demodulation processing circuit 30 includes, for example, R
It has a demodulation circuit that demodulates the F-fold signal and converts it into a video format signal, and a memory that stores the demodulated video format signal after digitizing it, and the video format signal output from the demodulation circuit and the video format signal read out from the memory. The configuration is such that one of the video format signals is selectively output in response to a switching command from the system controller 32. The video format signal output from this video format signal demodulation processing circuit 30 is supplied to a video switch 33. The video format signal demodulation processing circuit 30 also receives a horizontal synchronization signal and a vertical synchronization signal V from the demodulation/video format signal.
A separation circuit is provided for separating and extracting the horizontal and vertical synchronizing signals V and the control data C, and the separated horizontal and vertical synchronizing signals V and the control data C are supplied to each section such as the system controller 32.

On the other hand, the coded information signal demodulation processing circuit 31 is provided with a selection switch 35 that is switched depending on the area to be reproduced (CD area and video area) during reproduction of the composite disc. sometimes a
When the video area is played back, it is on the b side, and the switching is performed in response to a switching command issued from the system controller 32. In the case of a composite disc, the rotation speed of the disc is extremely different between the CD area and the video area, and the PCM audio signal is e.g.
lt to Fourteen Modulation
) signal, and in the video domain, if the digital signal is directly superimposed on the FM-modulated video signal during recording, the EFM signal will have a negative effect on the low-frequency components of the FM video signal, so the modulation degree is are equivalent, but the EFM signal is recorded with the signal level suppressed by several tens of degrees compared to the video carrier. Therefore, the same EFM signal has different frequency characteristics and amplitude when playing back the CD area and when playing the video area. Therefore, by switching the signal processing system of the reproduced EFM signal between the CD area and the video area, the demodulation system can be changed. The aim is to share the information.

That is, when reproducing the CD area, the reproduced RF signal is EF
The EFM signal has its frequency characteristics compensated by an equalizer circuit 36 having predetermined equalizing characteristics, and is further amplified by an amplifier 37 with a predetermined gain. On the other hand, in the case of video area playback, FM is included in the playback RF signal.
Only the EFM signal included with the video signal is extracted by an EFM extraction circuit 38 consisting of an LPF or the like, and the frequency characteristics are compensated by an equalizer circuit 39 which has equalizing characteristics different from those of the equalizer circuit 36. By being amplified by the amplifier 40 having a gain, it is output as an EFM signal with frequency characteristics and amplitude equivalent to those during CD region reproduction.

Incidentally, when playing back a compact disc, the selection switch 35 is always in the state where the a side is selected.

The reproduced EFM signal selected by the selection switch 35 is EFM
The signal is supplied to the demodulation circuit 42. The EFMli adjustment circuit 42 is
The configuration is such that the reproduced EFM signal is demodulated to obtain PCM data, that is, digital data and subcodes including, for example, time-division multiplexed left and right channel audio information. Digital data including audio information output from the EFM demodulation circuit 42 is supplied to a deinterleaving/interpolation circuit 43. Day interleave
The interpolation circuit 43 cooperates with the RAM 44 to restore the digital data whose order has been rearranged by interleaving performed at the time of recording, and sends it to the error correction circuit 45, and the error correction circuit 45 outputs an uncorrectable signal. The error correction circuit 45 is configured to interpolate error data in the output data by an average value interpolation method or the like. The error correction circuit 45 is a CI RC (Cross Interle
ave Reed Sol.

The circuit is configured to perform error correction according to the error correction circuit 43 (son code) and supply the digital data to the deinterleaving/error correction circuit 43, and also to simultaneously supply an uncorrectable signal to the deinterleaving/error correction circuit 43 when correction is impossible. There is.

The output data of the de-interleaving interpolation circuit 43 is
A (digital to analog) conversion circuit 46 is supplied. The D/A conversion circuit 46 has a demultiplexer that separates digital data including time-division multiplexed left and right channel audio information from each other, so that both left and right channel audio signals are reproduced. After unnecessary components are removed from the reproduced audio signals of both the left and right channels by LPFs (low pass filters) 47 and 48, they are sent to the audio output terminal O via amplifiers 49 and 50.
UT+,0 is supplied to UT2.

On the other hand, of the subcodes output from the EFM demodulation circuit 42, 2 bits of channels P and Q are supplied to the system controller 32, and 6 bits of channels R-W are supplied to the deinterleaving/error correction circuit 52. .

In the deinterleaving/error correction circuit 52, deinterleaving of 6 bits of channels R-W and error correction using parities Q and P are performed. Output data of the deinterleaving/error correction circuit 52 is supplied to a mode/instruction decoder 53.

The mode/instruction φ decoder 53 decodes the mode specified by the 3 bits of channel RT of symbol 0 of each pack and the mode specified by the item represented by 3 bits of channels U to W, and the mode of symbol 1 of each pack. The structure is such that the instruction represented by 6 bits of channels R-W is decoded and signals indicating the mode and instruction are supplied to each section.

Further, the output data of the deinterleaving/error correction circuit 52 is supplied to an image memory device 55.

The image memory device 55 has 16 RAMs 56a to 56p, which have addresses corresponding to all pixels on a screen of 50 fonts horizontally and 18 fonts vertically, and each address can store 4-bit data, and a mode/ Depending on the mode and type of instruction indicated by the output of the instruction decoder 53, data indicating the color number of each pixel of each image channel in the output data of the deinterleaving/error correction circuit 52 is detected and the corresponding address of the RAM 56a to 56p is detected. Write horizontal and vertical synchronization signals to R by v
It consists of a memory control circuit 57 that sequentially reads out, in a predetermined order, one storage content corresponding to an image channel designated by data d corresponding to a key operation of an operation unit 60 among the AMs 56a to 56p.

The data output from this image memory device 55 is supplied to a color φ look up table (hereinafter referred to as CLUT) 58. The CLUT 58 controls the deinterleaving/error correction circuit 52 depending on the mode and instruction type indicated by the output of the mode/instruction decoder 53.
Load/CLUTφ color 0 to color 7 command and load/CLUT color 8 to color 1 of the output data of
5 command, holds color data corresponding to each color number, and selects and outputs the color data of the color number indicated by the data read from the image memory device 55 from among the held color data. It becomes.

The output data of this CLUT 58 consists of three pieces of data each representing the level of each color signal of R%G and B with 4 bits. R, G, output from CLU758
Three pieces of data representing the level of each B color signal are supplied to D/A conversion circuits 61, 62, and 63 and converted into analog signals. These D/A conversion circuits 61 to 63
The output of is supplied to an analog video conversion circuit 65.

The analog video conversion circuit 65 obtains a luminance signal and two color difference signals from the outputs of the D/A conversion circuits 61 to 63, for example, and parallel modulates two color subcarriers having a phase difference of 90 degrees with the two color difference signals. The obtained signals are added together to obtain a carrier color signal, and this carrier color signal is added and synthesized with the luminance signal, and a synchronization signal is added to generate the NTSC signal.
It is configured to form a video signal of the system. This analog video conversion circuit 65 converts the D/A conversion circuit 61 into
The outputs of 63 to 63 are converted into video signals and sent out.

Further, the output data of the deinterleaving/error correction circuit 52 is also supplied to a transparency φ control table (hereinafter referred to as TCT) 66. TCT6
6 is a load TC of the output data of the deinterleaving/error correction circuit 52 depending on the mode and instruction type indicated by the output of the mode/instruction decoder 53.
Transparency φ control bits TCB-0 to TCB- corresponding to each color number by detecting the T command
15, and one of the held TCB-0 to TCB-15 corresponding to the color number indicated by the data read from the image memory device 55 is selected and output.

The output of this TCT 66 is supplied to the video switch 33 as a control signal. The video switch 33 has a TCT
In addition to the output of 66, a video format signal obtained from the subcode and output from analog video conversion circuit 65 and a video format signal output from video format signal demodulation processing circuit 30 are supplied.

In the video switch 33, the video format signal obtained from the subcode is directly supplied to the fixed contact X of the changeover switch 68, and simultaneously supplied to the fixed contact y via the resistor R1. The fixed contact 2 of the changeover switch 68 has an open end.

The changeover switch 68 switches the movable contact U to one of the fixed contacts X5Ys2 according to the control signal output from the TCT66.
It is configured to selectively output a signal supplied to one of the fixed contacts X5YsZ by contacting the fixed contacts X5YsZ. Further, the video format signal output from the video format signal demodulation processing circuit 30 is directly supplied to the fixed contact 2 of the changeover switch 69, and at the same time is supplied to the fixed contact y via the resistor R2. The fixed contact X of the changeover switch 69 has an open end. The changeover switch 69, like the changeover switch 68, is configured to bring the movable contact U into contact with one of the fixed contacts x and ySz in response to a control signal. The movable contacts U of these changeover switches 68 and 69 are connected to each other.

A resistor R3 is connected between the common connection point J of these movable contacts U and the ground.
is connected. A signal obtained by mixing the video signal obtained from the subcode and the video format signal output from the video format signal demodulation processing circuit 30 is derived from this common connection point J. When the movable contact U of the changeover switch 68, 69 contacts the fixed contact X, the mixing ratio of the video format signal obtained from the subcode becomes 100%, and when the movable contact U contacts the fixed contact 2, the mixing ratio becomes 0.
%. Also, when the movable contact U contacts the fixed contact y, the resistance R is set so that the mixing ratio becomes M (M is 20 to 80%).
1, the value of R2 is set.

The signal derived to the common connection point J is connected to the video output terminal 0UT.
3.

Near the movement path of the pickup 22 in the disk radial direction, a detection signal is generated by detecting that the beam spot emitted from the pickup 22 has arrived at a position corresponding to the vicinity of the boundary between the CD area and the video area on the composite disk. A position detector 70 is provided. By generating this detection signal, it is possible to detect that the pickup 22 has reached the video area. As the position detector 70, one having a well-known configuration such as an optical sensor can be used. A detection signal output from the position detector 70 is supplied to the system controller 32.

The system controller 32 is composed of a microcombiator including a processor, ROM (read only memory), RAM, and the like.

This system controller 32 has a horizontal synchronization signal h1.
Vertical synchronization signal V and control data c, EFM demodulation circuit 42
Each bit of channels P and Q in the subcode output from the
Disc designation information indicating whether the disc is a disc or a composite disc, mode designation information indicating whether the playback area during playback of the composite disc is only a CD area, only a video area, or a double-headed area, etc. are supplied. In this system controller 32,
The processor processes the input signal according to a program stored in advance in the ROM, and controls each part of the video format signal demodulation processing circuit 30, the selection switch 35. It controls various parts such as a drive circuit (not shown) that drives the spindle motor 21, a drive circuit 71 that drives the slider motor, and a display section 72.

FIG. 8 is a block diagram showing a specific circuit example of the video format signal demodulation processing circuit 30, in which the RF multiplied signal from the RF amplifier 26 is demodulated into a video signal by the demodulation circuit 75,
Thereafter, it is supplied to a time base correction circuit 76 and a separation circuit 77. The separation circuit 77 includes the video format signal. The horizontal synchronization signal, vertical synchronization signal V and control data C are separated and extracted. The time axis correction circuit 76 includes, for example,
CCD (Charge Coupled Device
), etc., and is configured to perform time axis correction by changing the delay amount of the element in accordance with a control signal from the time axis control circuit 78. The time axis control circuit 78 includes a crystal oscillator (VCX) that oscillates in synchronization with, for example, the horizontal synchronization signal separated and extracted by the separation circuit 77.
O) It is configured to output a control signal according to the phase difference between the oscillation output of 79 and its frequency divided output, and the horizontal synchronization signal and color burst signal in the video signal that has passed through the time axis correction circuit 76. Regarding the specific configuration, see Japanese Patent Application Laid-open No. 1986.
-102182, etc.

The time axis corrected video signal is applied to the selection switch 80 and is also applied to the LPF C (low pass filter) 81.
via an A/D (analog/digital) converter 82
supplied to In the A/D converter 82, the video signal is sampled at a predetermined period, and the obtained sample values are sequentially converted into digital data. This A/D
The output data of the converter 82 is supplied to a video memory 83 consisting of a RAM (Random Access Memory) or the like.

As the video memory 83, one having a storage capacity capable of storing at least one field's worth of video information is used. Address control and mode control of this video memory 83 are performed by a memory control circuit 84. The memory control circuit 84 sequentially reads the data written in each address of the video memory 83 using the clock from the reference clock generation circuit 85 and controls the data of the video memory 83 in response to the write enable signal W output from the system controller 32. The configuration is such that control is performed to rewrite the contents of each address. The data read from the video memory 83 is D/A (digital/analog)
The signal is converted into an analog signal by the converter 86, and is applied to the selection switch 80 via the LPF 87. Selection switch 8
0 is normally located on the a side and selectively outputs the video format signal directly supplied from the time axis correction circuit 76, and switches to the b side in response to a switching command from the system controller 32, thereby controlling the video memory 83. selectively outputs the video format signal that has passed.

The operation of the processor in the system controller 32 in the above configuration will be explained with reference to the flowchart in FIG.

It is assumed that the composite disc has already been set at the playback position, and in this state, when a start command is issued from the operation unit 60, the processor sends a drive command to the motor drive circuit 71 to drive the slider motor 24. The pickup 22 is moved to the innermost position of the disk (step 31). When a detection switch (not shown) detects that the pickup 22 has reached the innermost circumference position, the processor focuses the pickup 22 and then reads the index code recorded in the audio lead-in area on the innermost circumference of the disc. Information is read (step S2), and then, based on this read information, it is determined whether or not the set disc is a composite disc (step S3). If it is a compact disc, the mode directly shifts to the CD play mode (step S4), and the playback operation continues unless there is a command such as program selection. Note that since the playback operation in the CD play mode is well known, the explanation will be omitted here.

If it is determined in step S3 that the disc is a composite disc, the processor immediately accelerates the spindle motor 21 toward the maximum prescribed rotational speed in the video area (step S5), and simultaneously drives the slider motor 24 to rotate at high speed to pick up the disc. 22 is moved toward the outer circumference of the disk at high speed (step 86). Thereafter, when it is detected by the detection signal from the position detector 70 that the pickup 22 has arrived at the video area (step S), the processor starts playing the video area (step S
8). During playback of this video area, the processor stores at least one field (or one frame) of predetermined video information obtained from the disk into the video memory 8.
control to write to 3. This video information to be written may be the first information in the video area, and may also be specified in advance by addressing, for example, by operating keys on the operation unit 60.

When it is detected in step S9 that the playback of the video area has ended, the processor decelerates the spindle motor 21 toward the maximum prescribed rotational speed in the CD area (step 510), and simultaneously drives the slider motor 24 to rotate at high speed to pick up the data. 22 is moved at high speed to the innermost position of the disk (step 511). When it is detected that the pickup 22 has reached the innermost circumferential position of the disk based on the detection output of the aforementioned detection switch (not shown) (step 512), the processor starts the reproduction operation of the CD area (step 813). At the same time, the processor switches the selection switch 80 in the video format signal demodulation processing circuit 30 to the b side, selects the video information written in the video memory 83 during playback of the video area, outputs the video, and outputs the video information during playback of the CD area. Play still images. When it is detected that the playback of the CD area has ended by reading the audio readout information (step 514), if there is no particular operation command, the processor drives the slider motor 24 to return the pickup 22 to the home position. (step 515)
), the disc is further ejected by a loading mechanism (not shown), and the series of playback operations is completed.

Further, when a still image playback command is issued from the operation unit 60 during execution of the routine or main routine as shown in the flowchart of FIG. judge. If it is determined in step S20 that the video area is not being played back, the processor resumes execution of the routine that was being executed immediately before proceeding to step S20. When it is determined in step S20 that the video area is being played back, the processor sends out the write enable signal W for one field (or one frame) period using the vertical synchronization signal V, and The video information for one frame is written into the video memory 83 (step 521). Next, the processor switches the selection switch 80 to the b side (step 522) and resumes execution of the routine that was being executed immediately before proceeding to step 320.

After the recorded information in the video area of the composite disc is reproduced in steps 81 to S9 in the above operation, the recorded information in the CD area is reproduced in steps 810 to S14. When a still image playback command is issued during playback of a video area, one field (or one frame) worth of video information is written into the video memory 83 in steps S20 to S22, and the video signal read out from the video memory 83. is selectively output from the selection switch 80, and the still image is reproduced.

Even if a still image playback command is not issued during playback of the video area, the video signal written in the video memory 83 during playback of the video area is selectively output from the selection switch 80 and the still image is played back when the CD area is played back. will be done.

Now, while the video area is being played, the mode/instruction war decoder 53 loads, CLUT, and color.
When the color 7 instruction and load/CLUT/color 8 to color 15 instructions are decoded, 409 is stored in CLUT58.
Color data for 16 designated colors out of 6 colors is held.

Thereafter, 16 channels of image data are stored in the RAMs 56a to 56p in the image memory device 55 by decoding the light, font, foreground/background commands, etc. When one of the 16 channels of image data is designated by data corresponding to a key operation on the operation unit 60, the image data of the designated channel is sequentially output from the image memory device 55 and supplied to the CLU 758. Then, the color data of the color number indicated by the image data is output from the CLU 75g. A video format signal based on this color data is output from the analog video conversion circuit 65 and supplied to the video switch 33.

Here, when the load TCT instruction is decoded, the TCT
66 with transparency corresponding to each color number.
Control bits TCB-0 to TCB-15 are retained. And the retained TCB-0 to TCB-15
One of them corresponding to the color number indicated by the data read from the image memory device 55 is selectively T.
The signal is output from the CT 66, and the mixing ratio in the video switch 33 is specified by the output of the TCT 66.

Then, the mixing ratio of the video format signal output from the analog video conversion circuit 65 and the video format signal output from the video format signal demodulation processing circuit 30 is controlled on a pixel-by-pixel basis. As a result, as shown in FIG. 11, for example, the mixing ratio of the video format signal output from the video format signal demodulation processing circuit 30 corresponding to each pixel outside the area of image A is set to 100%, and each of the pixels within the area is set to 100%. The mixing ratio of the part corresponding to the pixel is set to 0%, and the mixing ratio of the part corresponding to each pixel outside the area of image B by the video format signal output from the analog video conversion circuit 65 is set to 0%, and the mixing ratio of the part corresponding to the area is set to 0%. The mixing ratio of the part corresponding to each pixel in is 100%.
By setting , it is possible to form image C, which is obtained by combining a portion of image A outside the area and a portion of image B inside the area.

Therefore, as shown in FIGS. 12(A) to 12(C), subtitles, musical scores, and scene descriptions are added to moving images obtained from video format signals recorded in the video area or still images obtained from the video memory 83 using subcodes. This means that sentences etc. can be inserted.

In this way, by sequentially processing the signals read from the disk 20, it is possible to superimpose images based on subcodes related to each other on a moving image obtained from a video format signal recorded with FM modulation. A reproduced image that is rich in color and does not give an unnatural feeling can be easily obtained.

Furthermore, when an image obtained by the subcode is inserted into a still image obtained by the video memory 83, since the recorded information on the disk 20 is continuously read, the image obtained by the subcode is sequentially read along with the audio in the recording order. It will be played back and there will be no discomfort.

In addition, by inserting data corresponding to characters in each language into each image channel, subtitles in multiple languages can be recorded on a single disc, and the desired language can be selected by key operation on the operation unit 60. This means that subtitles can be selectively displayed, which has the advantage of eliminating the need to create master discs for each country.

FIG. 13 is a diagram showing another embodiment of the present invention, and in this embodiment, in addition to the four types of modes of the conventional method: zero mode, line graphics mode, TV graphics mode, and user mode. EXTEMPID・
Line Gela Fix Mode and Extempid-T
A code is set to be inserted as symbol 0 to specify the V graphics mode.

The screen configuration in the expanded line gelatin fix mode is the same as that in the line gala fix mode, and the screen configuration as shown in FIG.
T TRANSPARENT C0NTR0L WOR
There are an instruction called D) and an instruction called Light Font as shown in FIG. The set TCW command sets each bit of TCW represented by a total of 8 bits of channels T to W of symbols 4 and 5.
y corresponds to each color number indicating 8 colors in the line gel fix mode, and the value of each bit bo-b determines the mixing ratio at the pixel designated by the corresponding color number between 0% and 100%. This is an instruction to set to one of the values. Also, the light font command is
Similar to the light font command in line graphics mode, font data is written to the specified location in the image memory, and at the same time two color numbers each represented by the 3 bits of channels U-W of symbols 4 and 5 are specified. This is an instruction to set the mixing ratio in each pixel to either 0% or 100% depending on the value of each bit T Os T I of channel T of symbols 4 and 5.

The screen configuration in extemped TV graphics mode is the same as that in TV graphics mode,
The command called set TCW and the first command as shown in FIG.
There is an instruction called preset φ memory as shown in FIG. The set TCW command in Extemporized TV graphics mode sets TCW represented by a total of 16 bits of channels T-W of symbol 4 to symbol 7.
Each bit b O"'-b Is of CW corresponds to each color number indicating 16 colors in TV graphics mode, and the corresponding color number is specified by the value of each bit bo"""bls. This is an instruction to set the mixing ratio at 0% or 100%. The preset memory instruction also sets the mixing ratio in the pixel set to the color numbered one represented by the four bits of channels T to W of symbol 4 to 0% and 0% according to the value of bit T of channel R of symbol 4. 10
This is an instruction to set the value to one of 0%.

The image information recorded as a subcode using the recording format as described above is stored in the TCT6 in the apparatus shown in FIG.
6 can be processed by using a set TCW command, a write φ font command, and a preset memory command to hold data indicating the mixing ratio in correspondence with each color number.

In the above embodiment, the number of bits of the instruction code representing the mixing ratio at each position on the two-dimensional screen formed by the video format signal is 1 or 2, but the number of bits of the instruction code is 1 or 2. Any value may be used as long as it does not exceed the number of bits of the data field.

The above describes the case where a graphic code containing image information and an instruction code representing a mixing ratio at each position on a two-dimensional screen formed by a video format signal are inserted as subcodes of a coded information signal and recorded on a recording medium. As explained above, the following describes the case where a graphic code containing image information and an instruction code specifying an area on a two-dimensional screen formed by a video format signal are inserted as subcodes of a coded information signal and recorded on a recording medium. explain.

First, there is a conventional method similar to the method shown in FIG.

Zero mode, Linegela fix mode in Eq.
A code is set to be inserted as symbol 0 in order to specify the 4N class mode of the TV graphics mode and the user mode as well as the expanded line galley fix mode and the expanded TV graphics mode.

The screen configuration in the extemporized line gelafix mode is the same as the line gelafix mode, with a set window (S) configured as shown in Figure 18.
There is an instruction called ET WINDOW). The set-window command in the line graphic mode is a command to set a rectangular area called a "window" at the position on the screen specified by the 4 bits of channel T-W of symbol 4. In line graphic mode, the screen area is vertical (row).
Since there are only two fonts in one direction, the entire screen area is set as a window, and only the vertical position of the window on the CRT display screen is specified, as shown by diagonal lines in FIG. Further, the mixing ratio is specified by two bits of channels R and S forming symbol 4.

The screen configuration in extemped TV graphics mode is the same as that in TV graphics mode,
A command called a set window with a configuration as shown in FIG. 20, a preset window in TV graphics mode,
There is an instruction with the structure shown in FIG. 21, which is a modified version of the instruction called "PRBSET MEMORY", and an instruction with the structure shown in FIG. 22, which is a modified version of the instruction called "PRESET BORDER".

The set window command in extemped TV graphics mode is symbol 6 and symbol 7.
This is a command to set a rectangular area called "Window 1" defined by the position on the screen specified by and the positions specified by symbols 8 and 9. Point (s, The position of the vertical blade s) in the y direction is expressed as a row (ROIf) by 5 bits of channel S-W of symbol 6, and the position of the point (S, S
) in the horizontal direction is determined by the 6 bits of R-W of the symbol column (COLUMN).
). Further, the vertical position y of the point (e, e) corresponding to the lower right corner of the window is determined by the 5 bits of S-W of symbol 8.
), and the position of the point (e, e) in the horizontal blade y direction is represented by a column (COLUMN) by six bits R-W of symbol 9. This set・
A window as shown by diagonal lines in FIG. 23 is set on the display screen by the window command.

Furthermore, the display within the set window is obtained by mixing the video format signal obtained based on the subcode and the video format signal that has been subjected to FM modulation and multiplexed recording together with the digital signal including this subcode. The mixing ratio is specified as one of 0%, 30%, 70%, and 100% by the 2 bits of channels R and S of symbol 4.

Preset memory commands in Extemporized TV Graphics mode, like commands in TV Graphics mode, are specified by the color number 110 specified by the 4 bits of channel T-W forming symbol 4.
1 of 16 colors from II to color number "15"
Channel R that specifies the color of all fonts in memory and the mixing ratio in the window to form symbol 4.
This is an instruction to set the value indicated by the two bits of S and S.

Similarly to the command in the TV graphics mode, the preset border command in extemped TV graphics mode sets all font colors of the border part in memory to the 4th channel T-W that forms symbol 4. Color number “0” specified by bit
This command specifies one of the 16 colors from '15' to color number '15' and sets the mixing ratio in the window to the value indicated by the 2 bits of channels R and S forming symbol 4. be.

FIG. 24 shows a disc player for playing a composite disc as shown in FIG. 6 in which a digital audio signal as a coded information signal into which a sub-code containing image information has been inserted is recorded. In FIG. 24, a disk 20, a spindle motor 21, a pickup 22,
Slider 23, slider motor 24, transmission mechanism 25, R
F amplifier 26, video format signal demodulation processing circuit 3
0, coded information signal demodulation processing circuit 31, system controller 32, video switch 33, operation section 60, position detector 70, motor drive circuit 71, display section 72,
Connected in the same way as the device shown in the figure.

However, in the coded information signal demodulation processing circuit 31 in this example, the TCT 66 is removed from the configuration of FIG. 7, and the output data of the deinterleaving/error correction circuit 52 is also supplied to the window attribute memory device 90. The window attribute memory device 90 is 50 fonts wide x
A RAM 91 has addresses corresponding to all fonts on the 18-font screen and each address can store 2-bit data, and a RAM 91 that stores data according to the mode and type of instruction indicated by the output of the mode/instruction decoder 53. Data indicating the window position and data indicating the mixing ratio among the data output from the interleaving/error correction circuit 52 are detected, and the address corresponding to the font in the window of the RAM 91 is filled with data indicating the detected mixing ratio. , write data corresponding to the mixing ratio of the video format signal of 0% obtained by the subcode to the address corresponding to the font outside the window, and use the horizontal and vertical synchronization signals to change the memory contents of the RAM 91 to a predetermined value using v. It consists of a memory control circuit 92 that sequentially reads data in sequence. The output data of this window attribute memory device 90 is supplied to a switch control circuit 93. The switch control circuit 93 is configured to supply the video switch 33 with a control signal according to the mixing ratio of each font indicated by the output data of the window attribute memory device 90.

Further, in the video switch 33, the video format signal obtained from the subcode is directly supplied to the fixed contact V of the changeover switch 95, and at the same time is supplied to the fixed contact XsY via resistors R4 and R5. Changeover switch 95
The fixed contact 2 has an open end. Changeover switch 9
5, the movable contact t is switched to one of the fixed contacts u, x, y, and z by a control signal output from the switch control circuit 93.
The fixed contacts uSx, y, and z are brought into contact with each other to selectively output a signal supplied to one of the fixed contacts uSx, y, and z.

Further, the video format signal from the video format signal demodulation processing circuit 30 is directly supplied to the fixed contact 2 of the changeover switch 96, and at the same time is supplied to the fixed contact YsX via the resistors R8s and R7. The fixed contact U of the changeover switch 96 has an open end. The changeover switch 96 is
Similar to the changeover switch 95, the movable contact t is
is configured to make contact with one of fixed contacts u, x, y, and z. The movable contacts t of these changeover switches 95 and 96 are connected to each other.

A resistor R8 is connected between the common connection point J of these movable contacts t and the ground.
is connected. A signal obtained by mixing the video format signal obtained from the subcode and the video format signal from the video format signal demodulation processing circuit 30 is derived from this common connection point J. Changeover switch 95.9
When the movable contact t of No. 6 contacts the fixed contact U, the mixing ratio of the video format signal obtained by the subcode is 10.
When the movable contact t contacts the fixed contact 2, the mixing ratio becomes 0%. Also, the resistance R is set such that when the movable contact t contacts the fixed contact X, the mixing ratio becomes 70%, and when the movable contact t contacts the fixed contact y, the mixing ratio becomes 30%.
Values from 4 to R7 are set. The signal led out to the common connection point J is supplied to the video output terminal 0UT3.

Even in the above configuration, the mode /
Load C by instruction decoder 53
LUT/color 〇~color 7 command and load/CLUT
・When color 8 to color 15 instructions are decoded, CL
The UT 58 holds color data for designated 16 colors out of 4096 colors.

Thereafter, 16 channels of image data are stored in the RAMs 56a to 56p in the image memory device 55 by decoding the light, font, foreground/background commands, etc. When one of the 16 channels of image data is specified by data d corresponding to a key operation on the operation unit 60, the image data of the specified channel is sequentially output from the image memory device 55 and supplied to the CLUT 58. Then, the color data of the color number 1 indicated by the image data is stored in CLUT5B.
is output from. A video signal based on this color data is output from the analog video conversion circuit 65 and supplied to the video switch 33.

Now, when the window set instruction is decoded,
In the window attribute memory device 90, data indicating the mixing ratio of video format signals of 0% is written to the address corresponding to the font outside the window specified by the window set command of the RAM 91 according to the subcode, and corresponds to the font inside the window. Data indicating the mixing ratio specified by the window set instruction is written to the address. R of this window attribute memory 90
The data read from AM91 is sent to the video switch 33.
The mixing ratio of the video format signal supplied to the analog video conversion circuit 65 and the video format signal output from the video format signal demodulation processing circuit 30 is controlled on a font-by-font basis. It works.

Above, we have explained the case where a composite disc called CDV is used as a recording medium.
Recording media other than DV can also be used. Refer to FIGS. 25 and 26 for an apparatus in which a disk called LDD, that is, a disk on which FM-modulated video format signals, audio signals, and digital audio signals are multiplex recorded, is used as a recording medium other than CDV. I will explain.

In FIG. 25, a disk 20, a spindle motor 2
1, pickup 22, slider 23, slider motor 24, transmission mechanism 25, RF amplifier 26, video format signal demodulation processing circuit 30, coded information signal demodulation processing circuit 31, system controller 32, video switch 33, operation unit 60, position Detector 70, motor drive circuit 7
1. The display section 72 is connected in the same way as the device shown in FIG.

However, in the coded information signal demodulation processing circuit 31 in this example, the selection switch 3
5. Equalizer circuit 36 and amplifier 37 are removed, and the output of amplifier 40 is directly supplied to EFM demodulation circuit 42. Further, the output of the TCT 66 is controlled by the selection switch 98. The selection switch 98 is supplied with the output of the control data generation circuit 99 as an extraction input. The selection switch 98 is normally located on the A side and selectively outputs the output of the control data generation circuit 99, and selectively outputs the output of the TCT 66 by switching to the A side in response to a switching command issued from the system controller 32. is configured to do so.

Further, the nine control data generation circuits include the video switch 33.
The configuration is such that data is constantly generated to control the movable contacts U of the changeover switches 68 and 69 to contact the fixed contacts 2. Therefore, unless the selection switch 98 is switched to the a side by a switching command issued from the system controller 32, only the video format signal output from the video format signal demodulation processing circuit 30 is led to the common connection point J and recorded as a subcode. No mixing of video format signals by graphics code is performed.

The operation of the processor in the system controller 32 in the above configuration will be explained with reference to the flowchart in FIG. 26.

It is assumed that the disc 1 has already been set at the playing position. In this state, when a start command is issued from the operation unit 60, the processor sends a drive command to the motor drive circuit 71 to drive the slider motor, thereby moving the pickup 22 to the innermost position of the disc (step 5101). . When a detection switch (not shown) detects that the pickup 22 has reached the innermost position, the processor focuses the pickup 22 and then starts reading signals recorded on the disk 20 (step 5102), it is determined based on the control data C output from the video format signal demodulation processing circuit 30 whether a graphic code is recorded as a subcode of the digital audio signal recorded together with the video format signal (step 5103).

If no graphic code is recorded, the processor shifts to the normal play mode (step 5104) and continues the playback operation. Incidentally, since the operation in the normal play mode is well known, the explanation will be omitted here.

If a graphic code is recorded, the processor determines whether a superimpose command has been issued from the operation unit 60 (step S105). If it is determined in step 5105 that no superimpose command has been issued, the processor moves to step 5104. If it is determined in step 5105 that a superimpose command has been issued, the processor determines whether or not a special reproduction command has been issued from the operation unit 60 (step 5106).

If it is determined in step 8106 that no special regeneration command has been issued, the processor selects the selection switch 98
is switched to side a so that an image based on the graphic code is inserted into the moving image based on the video format signal from the video format signal demodulation processing circuit 30 (step 5107λ After executing step 5107, the processor inserts the superimpose image from the operation unit 60). Determine whether the command is being issued continuously (step 5108)
. If it is determined in step 5108 that the superimpose command is being issued continuously, the processor moves to step 5107 again. Step 510
When it is determined in step 8 that no superimpose command has been issued, the processor switches selection switch 98 to b.
In step 5109), the insertion of images into the moving image using the graphic code is stopped, and the playback operation similar to that in the normal play mode is performed (step 5109), and the process returns to step 8103.

When it is determined in step 5106 that a special play command has been issued, the processor determines whether or not the disc 20 is a CAV (constant angular velocity) disc using the control data C output from the video format signal demodulation processing circuit 30. Determine (step 5ilo). When it is determined in step 5110 that the disk 20 is not a CAV (constant angular velocity) disk, the processor determines that the disk 20 is a CLV (constant linear velocity) disk, and still images are reproduced using the video memory 83. In step 5111), the selection switch 98 is switched to the a side so that the image based on the graphic code is inserted into the still image based on the video format signal from the video format signal demodulation processing circuit 30 (step S112). ). Furthermore, step 5111
To reproduce still images using the video memory 83 in , a write enable signal W is sent over a period of one field (or one frame) in response to a vertical synchronization signal V, and one field (or one frame) is reproduced. This is done by writing the video information into the video memory 83 and switching the selection switch 80 to the b side.

After executing step 5112, the processor determines whether superimpose commands are being issued continuously (step 5113). If it is determined in step 8113 that the superimpose command is being issued continuously, the processor moves to step 5112 again. If it is determined in step 8113 that the superimpose command has not been issued, the processor switches the selection switch 98 to the b side to stop inserting the image into the still image using the graphic code, and continues the special playback command. It is repeatedly determined whether or not a special regeneration command has been issued (step 5114), and when it is determined that a special regeneration command has not been issued, the selection switch 80 is switched to the a side so that normal regeneration is performed ( Step 5115), the process returns to step 8103.

Meanwhile, in step 5110, the disk 20 is
(Constant angular velocity) When it is determined that it is a disk,
The processor is a video format signal demodulation processing circuit 30
It is repeatedly determined whether the graphic code for one screen has been read based on the control data C output from the video format signal demodulation processing circuit 30 when the graphic code for one screen has been read. It is determined whether the output control data C includes image reproduction position information corresponding to the graphic code (step 5117). Step 51
When it is determined in step 17 that the image reproduction position information is included, the processor sends a drive command to the motor drive circuit 71 to move the information reading beam of the pickup 22 to the position indicated by the image reproduction position information. Move it to (
Step 5118), a still image reproduction operation is started by jumping the information reading light spot of the pickup 22 by one track every time the disk 20 rotates once (step S119).

If it is determined in step 5117 that the image reproduction position information is not included, the processor sends a drive command to the motor drive circuit 71 to direct the information reading beam of the pickup 22 to one screen worth of graphic code. After moving it near the recording start position (step 5120)
, the process moves to step 5119.

After executing step 5119, the processor switches the selection switch 98 to side a so that the image based on the graphic code is inserted into the still image based on the video format signal from the video format signal demodulation processing circuit 30. Determine whether a pause command is being issued continuously (step 512
2).

If it is determined in step 5122 that the superimpose command is being issued continuously, the processor moves to step 5121 again.

If it is determined in step 5122 that the superimpose command has not been issued, the processor switches the selection switch 98 to the b side to stop inserting the image into the still image using the graphic code, and continues the special playback command. It is repeatedly determined whether or not a special playback command has been issued (step 8123), and when it is determined that a special playback command has not been issued, the still image playback operation by one track jump is stopped and normal playback is performed. After that (step 5124), the process returns to step 8103.

By step 5105 in the above operation, the operation unit 6
If a superimpose command is not issued by pressing the 0 key, the normal playback operation is performed by proceeding to step 5104 even if a graphic code is recorded, so that the data is FM modulated and recorded. Insertion of an image based on a graphic code into an image based on a video format signal is performed only when a superimpose command is issued by operating a key on the operation unit 60.

Next, when a special playback command is issued by key operation on the operation unit 60, step 5106 is performed in the case of a CLV disc.
and 5110 to 5113 write one field (or one frame) of a video format signal that is FM modulated and recorded in the video memory and then repeatedly reads it out to reproduce a still image. At the same time, information recorded on the disc is continuously read and written, and images based on graphic codes that are sequentially reproduced in the recording order are inserted into still images based on video format signals written in the video memory. In addition, in the case of CAV discs,
The image based on the graphic code for one screen is inserted into the still image based on the video format signal that is FM modulated and recorded at the position specified in steps 5110 and 5116 to 5122 or near the recording start position of the graphic code for one screen. Ru.

Incidentally, when a special reproduction command is not issued by operating a key on the operation unit 60, an image based on a graphic code is inserted in steps 8107 to 5109 to a moving image based on a video format signal that is FM modulated and recorded.

Effects of the Invention As detailed above, the image information recording and reproducing method according to the present invention inserts a graphic code containing image information as a subcode of the coded information signal in addition to the video format signal and the coded information signal to record the image information on the recording medium. When the recording medium is played, the signal corresponding to the graphic code is mixed with the video format signal, so that by simply processing the signals obtained from the recording medium sequentially, the image according to the subcode related to the image according to the video format signal can be generated. This means that it is possible to superimpose a reproduced image that is rich in variation and does not give an unnatural feeling.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing types of recording modes in the present invention;
FIG. 2 is a diagram showing the configuration of the load transparency control Φ table command, FIG. 3 is a diagram showing the correspondence between the TCB bit pattern and the mixing ratio, and FIG.
A diagram showing the load color lookup table color 0 to color 7 command, FIG. 5 is a diagram showing the configuration of the light Φ font foreground/background command,
FIG. 6 is a diagram showing the recording area of a composite disc, and FIG. 7 is a block diagram showing an example of an apparatus for reproducing image information recorded on the disc by the recording and reproducing method according to the present invention.
FIG. 8 is a block diagram showing a specific configuration example of the video format signal demodulation processing circuit 30 in the device shown in FIG. 7, and FIGS. 9 and 10 show the operation of the processor in the system controller 32 of the device shown in FIG. 11 and 12 are diagrams showing images obtained by the apparatus of FIG. 7, FIG. 13 is a diagram showing types of recording modes in another embodiment of the present invention, and FIG. , a diagram showing the configuration of the set TCW command, FIG. 15 is a diagram showing the configuration of the light font command, and FIG. 16 is a diagram showing the configuration of the set TCW command.
FIG. 17 is a diagram showing the configuration of the instruction; FIG. 18 is a diagram showing the configuration of the preset memory instruction; and FIG. Diagram showing the configuration, 1st
Figure 9 shows the window in the Extemporized line graphics mode, and Figure 20 shows the set window in the Extemporized TV graphics mode.
FIG. 21 is a diagram showing the configuration of the window command. FIG. 21 is a diagram showing the configuration of the preset memory command. FIG. 22 is a diagram showing the configuration of the preset border command. FIG. 23 is a diagram showing the configuration of the preset border command. FIGS. 24 and 25 are a block diagram showing another example of an apparatus for reproducing image information recorded on a disc by the recording and reproducing method according to the present invention, and FIG.
6 is a flowchart showing the operation of the processor in the system controller 32 of the device in FIG. 25;
The figure shows the recording format of the subcode, No. 28.
The figure shows the screen configuration in the line gala fix mode, and the figure m29 shows the screen configuration in the TV graphics mode.

Claims (2)

[Claims] (1) In addition to a video format signal and a coded information signal, a graphic code containing image information is inserted as a subcode of the coded information signal and recorded on a recording medium, and when the recording medium is played, the graphic code is inserted. A recording/reproducing method characterized in that a signal according to the video format is mixed with the video format signal. (2) When the recording medium is played, a portion corresponding to a predetermined period of the video format signal read from the recording medium is written into a memory, and then the stored contents of the memory are repeatedly read out to form a still image. 2. A still image video format signal is obtained, and a signal corresponding to a graphic code sequentially read from the recording medium is mixed with the still image video format signal.
Recording and playback method described.