JPH07118799B2 - Recording / playback method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a system 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 in which image information is recorded and reproduced as a subcode on a digital audio disk generally called a compact disk (hereinafter abbreviated as CD) having an outer diameter of about 12 cm. The subcode is formed of 8 bits, and the bit group forming the subcode is P, Q, R, S,
It is divided into 8 channels of T, U, V, and W. In the method of recording and reproducing the image information as a subcode, as shown in FIG. 27, the data corresponding to the image information is the channels R to W of the 8 bits forming the subcode.
6 symbols of 1 form 1 symbol, and 98 symbols are treated as 1 block. Two of the 98 symbols are used as sync signals, and the remaining 96 symbols are 4
Twenty-four symbols obtained by equal division are treated as the minimum unit [Pack] of data, and form one image processing instruction.

The first of these 24 symbols (hereinafter referred to as symbol 0) indicates the mode. Symbol 1 following symbol 0 indicating this mode is an instruction (INSTRUCTION) indicating the type of instruction. Symbol 3 and symbol 4 following the instruction are parity Q which is an error correction code. Each of the symbols 4 to 19 following the 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 a parity P which is an error correction code for protecting the information in the pack.

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

The line graphics mode is, for example, a mode in which a liquid crystal display or the like is provided on the front face of the player to display the explanation of the music, and as shown in FIG. 28, 288 [pixels (horizontal) (PIXEL)] x 24 [pixels] ] Horizontal screen is configured. A pixel is the smallest displayable pixel, and is a screen configuration unit called a font (FONT) that is divided into 6 pixels in the horizontal (COLUMN) direction and 12 pixels in the vertical (ROW) direction. It is usual that image processing is performed every time.

The number of fonts that can be displayed in this line graphics mode is 48 in the horizontal direction and 2 in the vertical direction.
This is called a screen area. Then, for the scrolling function, one font is added to the top and bottom and left and right of the screen area to obtain the horizontal width.
A subcode is formed so as to perform image processing by a memory having an address corresponding to each pixel on the screen of 50 [font] × 4 [font] in height. The area outside the screen area is called a border (BORDER).

The TV graphics mode is a mode for displaying an image on the television screen, and as shown in FIG. 29, a screen of 288 [pixels] horizontal × 192 [pixels] vertical is configured. 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 horizontal 50 [font] x vertical 18 [font] obtained by adding one font to the top and bottom and right and left outside the screen area. A subcode is formed by the memory so as to perform image processing.

The image processing commands include, for example, a command to fill the entire screen with a certain color, a command to draw a picture by using two kinds of colors for one font on the screen, a command to move the entire screen vertically or horizontally, etc. .

Of the 8 bits forming the subcode, the bit of channel Q includes time information corresponding to the track length from the start end of the program area of the CD to a predetermined position of each information data recorded, and the recording position It forms address time data that can be used as the indicated position data. The bits of channel P form data including inter-track information.

As described above, in the method of recording / reproducing image information as a subcode, the image required for displaying one font screen is about 3.3 / 1000 seconds, and it takes about 2.5 seconds to display 48 × 16 characters. It costs. For this reason, it is not possible to record and reproduce images with movement, and the maximum number of colors that can be used in one screen is 16. Therefore, in the conventional method,
There is a drawback that the reproduced image obtained is monotonous.

Therefore, when a signal corresponding to the image information recorded as the sub code is mixed with a separately generated video format signal to obtain a reproduced image with various variations, the image information recorded as the sub code is separately generated. If there is no relation between the video format signals, the reproduced image obtained is uncomfortable, so it is necessary to manually adjust the timing of starting the generation of the video format signal and the signal corresponding to the image information recorded as a subcode. It was not easy to obtain a reproduced image that was rich in changes and had no discomfort.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points,
An object of the present invention is to provide a recording / reproducing system that can easily obtain a reproduced image that is rich in changes and has no discomfort.

According to the recording / reproducing method of the present invention, a graphic code including image information in addition to a video format signal and a coded information signal is inserted as a subcode of the coded information signal and recorded on a recording medium. The feature is that the signal corresponding to the code is mixed with the video format signal.

EXAMPLES Examples of the present invention will be described in detail below with reference to FIGS. 1 to 26.

First, as shown in FIG. 1, in addition to the four modes of the conventional system such as zero mode, line graphics mode, TV graphics mode and user mode, graphics mode, with motion picture (GRAPHICS).
Set the code to be inserted as symbol 0 to specify (MODE WITH MOTION PICTURE).

The screen structure in the graphics mode with motion picture is the same as that in the TV graphics mode, and the load transparency control table (LOAD TRANSPARENCY CO
There is a command called NTROL TABLE). This road
The transparency control table command is a command for specifying the mode of each pixel on the screen. There are three types of modes designated by this command: a transparent mode, a mixed mode, and an opaque mode. In these three modes, the mixing ratios of the video format signal obtained by the subcode and the video format signal multiplexed and recorded together with the coded information signal including the subcode are set to different values.

Each of the bits of channels R to W of each symbol from symbol 4 to symbol 8 and channels R and S of symbol 9 is designated with each color registered as color number "0" to color number "15". It forms codes TCB-0 to TCB-15 that specify the mode for the pixel. FIG. 3 shows the correspondence between the bit patterns of these codes TCB-0 to TCB-15 and each mode, and the mixing ratio in each mode.

The 16 colors from color number "0" to color number "15" are the load color lookup table colors 0 to 15 (LOAD CLUT) in the TV graphics mode.
COLOUR0 to COLOUR15) command. Road color lookup table color 0 to color 15
Is an instruction for setting the contents of the color look-up table showing the color of the preset color number or the foreground / background color number having the configuration shown in FIG. It is necessary to specify 16 colors in total, but since each color has 4 bits of RGB, 2 symbols are required to set 1 color, and only 1 color can be set in 1 pack.
Therefore, this instruction is divided into two instructions that specify the first half 8 colors and the latter half 8 colors, respectively.

The instruction code for the first half 8 colors, that is, color 0 to color 7, is "30" and the latter half color 8 to color 1
The instruction code up to 5 is "31". The color mix for each color number is that red is the even symbol channel R ~ assigned to the color number.
U is represented by 4 bits, green is represented by 2 bits of channels V and W following channels R to U of an even symbol and 2 bits of channels R and S of the next odd symbol, a total of 4 bits, and blue. Is represented by 4 bits of channels T to W following it. Therefore, the grayscale of each color is 2 ⁴
Since there are (= 16) different RGB colors, 16 ³ (= 409
6) Color mixing is possible. In addition, gray scale "0000"
Corresponds to the darkest state, and "1111" corresponds to the brightest state.

Ride font foreground / background (WRITE FONT) in TV graphics mode
The FOREGROUND / BACKGROUND) instruction has the structure shown in FIG. 5, and the font data of symbols 8 to 19 is placed at the row address determined by symbol 6 and the column address determined by symbol 7. It is a command to write. For a pixel whose font data is "0", a color having a color number defined by "COLOR 0" is designated as a background color. For pixels with font data “1”, “color 1 (CO
The color of the color number defined in LOR 1) "is designated as the foreground color. At this time, the sub-picture channel can be designated by 4 bits of channels R and S of symbol 4 and symbol 5. You can specify up to 16 image channels.
By specifying this image channel, 16 types of images can be recorded, and the desired image channel can be selected and reproduced at the time of reproduction on the side using the disc.

FIG. 6 shows a composite disc in which a digital audio signal as a coded information signal in which a subcode including image information is inserted as described above is recorded. In the figure, the composite disc 20 has a first inner peripheral side on which a digital audio signal in which a subcode including image information is inserted is recorded.
Area (hereinafter referred to as a CD area) 20a and a second area (hereinafter referred to as a video area) in which an FM-modulated video format signal and a digital audio signal into which a subcode including image information is inserted are superimposed. Called area) 20b
And have. The video format signal contains higher frequency components than the PCM signal.
When recording a signal to b, it is necessary to increase the rotation speed of the disc as compared to when recording to the CD area 20a, and as a result, it goes without saying that during playback, in the video area 20b compared to the CD area 20a. The disc must be played at a high rotational speed. The rotation speed is several hundred rpm in the CD area 20a, while it is 2,000 rpm in the innermost circumference and several hundred hundred rpm in the outermost circumference in the video area 20b. Become.

Lead-in areas are provided respectively at the beginnings of the CD area 20a and the video area 20b, and these lead-in areas are associated with a pull code related to the recorded contents of each area.
For example, the first and second index code groups configured corresponding to each area are recorded by repeating the index code indicating the start time and the end time of each small portion configuring each area, and the audio lead-in area The index code also includes type information indicating whether or not the disc is a composite disc.

FIG. 7 shows a disc player for reproducing the recorded information of the composite disc as described above. In FIG. 7, the disk 20
Is rotated by a spindle motor 21, and the 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, a focus actuator that drives the objective lens in the optical axis direction of the information recording surface of the disk 20, and a beam spot emitted from the pickup 22. A tracking actuator or the like for biasing the (information detection point) in the disc radial direction with respect to the recording track is built in. The pickup 22 is mounted on a slider 23 that is movable in the radial direction of the disk, and this slider 23 is linearly driven by a transmission mechanism 25 that is a combination of a rack and a pinion, using a slider motor 24 as a drive source. The read RF (high frequency) signal output from the pickup 22 is supplied to the video format signal demodulation processing circuit 30 and the coded information signal demodulation processing circuit 31 via the RF amplifier 26.

The video format signal demodulation processing circuit 30 includes, for example, a demodulation circuit that demodulates an RF signal and converts the RF signal into a video format signal, and a memory that stores the digitalized demodulation video format signal after it is output from the demodulation circuit. One of the video format signal and the video format signal read from the memory is selectively output by a switching command from the system controller 32. The video format signal output from the video format signal demodulation processing circuit 30 is supplied to the video switch 33. Further, the video format signal demodulation processing circuit 30 is provided with a separation circuit for separating and extracting the horizontal synchronizing signal h, the vertical synchronizing signal v and the control data c from the demodulated video format signal. The signals h and v and the control data c are supplied to each unit 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 which is switched according to the area (CD area and video area) to be reproduced when reproducing the composite disk. This switch 35 reproduces the CD area. Sometimes it is on the a side, and when playing the video area, it is on the b side, and switching is performed in response to a switching command issued from the system controller 32. In the case of a composite disc, the disc rotation speed is extremely different between the CD area and the video area, and the PCM audio signal is, for example, an EFM (Eight to Fourteen Modulation) signal. If it is superimposed on the modulated video signal, the EFM signal will adversely affect the low-frequency component of the FM video signal, so the degree of modulation is the same, but the EFM signal is several tens of dB relative to the video carrier. It is recorded with the signal level suppressed. Therefore, even with the same EFM signal, the frequency characteristics and the amplitude are different between when playing the CD area and when playing the video area.By switching the signal processing system of the playing EFM signal between the CD area and the video area,
The demodulation system is being shared.

That is, during reproduction in the CD area, the reproduced RF signal is an EFM signal, and the EFM signal is compensated for the frequency characteristic by the equalizer circuit 36 having a predetermined equalizing characteristic and further amplified by the amplifier 37 with a predetermined gain. On the other hand, in the case of reproduction in the video area, only the EFM signal included in the reproduction RF signal together with the FM video signal is the EFM extraction circuit 38 including the LPF.
The frequency characteristics are compensated by the equalizer circuit 39 having the equalizing characteristic different from that of the equalizer circuit 36, and the amplifier 40 having a gain larger than that of the amplifier 37.
By being amplified by, it is output as an EFM signal with the same frequency characteristics and amplitude as when playing in the CD area.

When the compact disc is reproduced, the selection switch 35 is always in the state of selecting the a side.

The reproduced EFM signal selected by the selection switch 35 is the EFM demodulation circuit.
Supplied to 42. The EFM demodulation circuit 42 is configured to demodulate the reproduced EFM signal to obtain PCM data, that is, digital data and subcode including, for example, time-division multiplexed left and right channel audio information. The digital data including the audio information output from the EFM demodulation circuit 42 is supplied to the deinterleave / interpolation circuit 43. The deinterleave / interpolation circuit 43 works together with the RAM 44 to restore the digital data whose order has been rearranged by the interleaving performed at the time of recording and also to provide an error correction circuit.
When the error correction circuit 45 outputs an uncorrectable signal, the error data in the output data of the error correction circuit 45 is interpolated by an average value interpolation method or the like. The error correction circuit 45 uses a CIRC (Cross Interleave Reed
The error correction is performed by the Solomon Code) and the digital data is supplied to the deinterleave / error correction circuit 43, and when uncorrectable, an uncorrectable signal is simultaneously supplied to the deinterleave / error correction circuit 43. .

The output data of the deinterleave / interpolation circuit 43 is D / A
It is supplied to the (digital / analog) conversion circuit 46. D /
The A conversion circuit 46 has a demultiplexer that separates the time-division-multiplexed digital data containing the left and right channel audio information from each other, and reproduces the left and right channel audio signals. Amplifiers 49 and 50 are used for the playback audio signals of the left and right channels after unnecessary components have been removed by LPFs (low-pass filters) 47 and 48.
Is supplied to the audio output terminals OUT ₁ and OUT ₂ via.

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 to W are supplied to the deinterleave / error correction circuit 52. . In the deinterleave / error correction circuit 52, channels R to W
6-bit deinterleave and parity Q and P
Error correction by. The output data of the deinterleave / error correction circuit 52 is supplied to the mode / instruction decoder 53. The mode / instruction decoder 53 includes a mode represented by 3 bits of channels R to T of symbol 0 of each pack and a mode designated by an item represented by 3 bits of channels U to W and a channel of symbol 1 of each pack. An instruction represented by 6 bits of R to W is decoded, and a signal indicating a mode and an instruction is supplied to each unit.

Further, the output data of the deinterleave / error correction circuit 52 is supplied to the image memory device 55. Image memory device 55
Has 16 RAMs 56a to 56p each having an address corresponding to all pixels on the screen of 50 fonts in the horizontal direction and 18 fonts in the vertical direction and capable of storing 4-bit data at each address, and a mode /
A deinterleave / error correction circuit depending on the mode and instruction type 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 52 is detected and written in the corresponding address of RAM 56a to 56p, and the operation unit 60 of RAM 56a to 56p is operated by the horizontal and vertical synchronizing signals h and v. 1 corresponding to the image channel specified by the data d corresponding to the key operation of
The memory control circuit 57 sequentially reads out one memory content in a predetermined order.

The data output from the image memory device 55 is supplied to a color look-up table (hereinafter referred to as CLUT) 58. CLUT58 is a mode / instruction
Depending on the mode indicated by the output of the decoder 53 and the type of instruction, load / CLUT / color 0 to color 7 instructions and load of the output data of the deinterleave / error correction circuit 52
CLUT-Color 8 to color 15 commands are detected, the color data corresponding to each color number is held, and the color data of the color number indicated by the data read from the image memory device 55 is selected from the held color data. Output.

The output data of the CLUT 58 is composed of three data representing the level of each color signal of R, G and B by 4 bits. The three data representing the levels of the R, G, and B color signals output from the CLUT58 are the D / A conversion circuit 6
It is supplied to 1, 62, 63 and converted into an analog signal. The outputs of these D / A conversion circuits 61 to 63 are supplied to the analog video conversion circuit 65. The analog video conversion circuit 65 receives the luminance signal and the 2
One color difference signal is obtained, and the signals obtained by parallel-modulating two color subcarriers having a phase difference of 90 ° with each other by the two color difference signals are added together to form a carrier color signal, and this carrier color signal is added to the luminance signal. It is configured to combine and add a sync signal to form an NTSC video signal.
This analog video conversion circuit 65 enables the D / A conversion circuit 61.
The ~ 63 outputs are converted into video signals and sent out.

The output data of the deinterleave / error correction circuit 52 is also supplied to a transparency control table (hereinafter referred to as TCT) 66. The TCT66 detects the load TCT instruction in the output data of the deinterleave / error correction circuit 52 according to the mode indicated by the output of the mode / instruction decoder 53 and the type of instruction, and transparency control corresponding to each color number.・ Hold bits TCB-0 to TCB-15 and hold TC
One of B-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. In addition to the output of TCT66, the video switch 33 has an analog video conversion circuit obtained from the subcode.
The video format signal output from 65 and the video format signal output from the video format signal demodulation processing circuit 30 are supplied.

In the video switch 33, the video format signal obtained from the sub code is directly supplied to the fixed contact x of the changeover switch 68 and simultaneously to the fixed contact y via the resistor R ₁ . The fixed contact z of the changeover switch 68 is an open end. The changeover switch 68 brings the movable contact u into contact with one of the fixed contacts x, y, z by the control signal output from the TCT 66 and supplies the signal to one of the fixed contacts x, y, z. Is selectively output.
Further, the video format signal output from the video format signal demodulation processing circuit 30 is directly supplied to the fixed contact z of the changeover switch 69, and at the same time, supplied to the fixed contact y via the resistor R ₂ . The fixed contact x of the changeover switch 69 is an open end. The changeover switch 69 is a changeover switch 68.
Similarly, the movable contact u is fixed to the fixed contact x by the control signal,
It is configured to contact one of y and z. The movable contacts u of the changeover switches 68 and 69 are connected to each other. A resistor R ₃ is connected between the common connection point J of these movable contacts u and the ground. 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 at the common connection point J. Changeover switch 68, 69
When the movable contact u contacts the fixed contact x, the mixing ratio of the video format signal obtained from the sub-code becomes 100%, and when the moving contact u contacts the fixed contact z, the mixing ratio becomes 0.
%. Further, when the movable contact u comes into contact with the fixed contact y, the resistances R ₁ and R ₂ are adjusted so that the mixing ratio becomes M (M is 20 to 80%).
The value of is set. The signal derived at the common connection point J is supplied to the video output terminal OUT ₃ .

In the vicinity of the movement path of the pickup 22 in the radial direction of the disc, 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 of the composite disc. A position detector 70 is provided. The generation of this detection signal makes it possible to detect that the pickup 22 has reached the video area. The position detector 70 may have a known structure such as an optical sensor. The detection signal output from the position detector 70 is supplied to the system controller 32.

The system controller 32 is composed of a microcomputer including a processor, a ROM (read only memory), a RAM and the like. This system controller
Reference numeral 32 denotes a horizontal synchronizing signal h, a vertical synchronizing signal v and control data c, each bit of channels P and Q in the subcode output from the EFM demodulation circuit 42, and whether the disc to be reproduced from the operating unit 60 is a compact disc. Disc designation information indicating whether the disc is a composite disc, the playback area when playing a composite disc is a CD
Mode specifying information indicating only the area, only the video area, or both areas is supplied. In this system controller 32, the processor processes a signal input according to a program stored in advance in the ROM, each section of the video format signal demodulation processing circuit 30, the selection switch 3
5, a drive circuit (not shown) that drives the spindle motor 21, a drive circuit 71 that drives the slider motor, and a display unit
It controls each part such as 72.

FIG. 8 is a block diagram showing a specific circuit example of the video format signal demodulation processing circuit 30. The RF from the RF amplifier 26 is shown in FIG.
The signal is demodulated into a video signal by the demodulation circuit 75, and then supplied to the time axis correction circuit 76 and the separation circuit 77. Separation circuit
At 77, the horizontal synchronizing signal h, the vertical synchronizing signal v, and the control data c included in the video format signal are separated and extracted. The time axis correction circuit 76 is, for example, a CCD (Charge Couple
A variable delay element such as dDevice) is used, and the time axis correction is performed by changing the delay amount of the element according to a control signal from the time axis control circuit 78.
The time-axis control circuit 78 is a crystal oscillator (VCX) that oscillates in synchronization with, for example, the horizontal synchronization signal h separated and extracted by the separation circuit 77.
O) 79 oscillation output and its frequency division output, and time axis correction circuit 7
The control signal is output in accordance with the phase difference between the horizontal synchronizing signal and the color burst signal in the video signal that has passed through 6. The specific configuration is disclosed in JP-A-56-1021.
No. 82, etc.

The time-axis-corrected video signal becomes one input of the selection switch 80 and A / D via LPF (low pass filter) 81.
It is supplied to the (analog / digital) converter 82. A / D
In the converter 82, the video signal is sampled at a predetermined cycle, and the obtained sample values are sequentially converted into digital data. The output data of this A / D converter 82 is RAM
It is supplied to the video memory 83 composed of (random access memory) or the like. As the video memory 83, one having a storage capacity capable of storing at least one field of video information is used. Address control and mode control of the video memory 83 are performed by the memory control circuit 84. The memory control circuit 84 includes a reference clock generation circuit 85.
The data written in the respective addresses of the video memory 83 are sequentially read by the clock from and the control is performed to rewrite the contents of the respective addresses of the video memory 83 in response to the write enable signal w output from the system controller 32. It is composed. The data read from the video memory 83 is converted into an analog signal by the D / A (digital / analog) converter 86 and becomes the other input of the selection switch 80 via the LPF 87. The selection switch 80 is normally a
The video format signal directly supplied from the time axis correction circuit 76 on the side and selectively switched to the side b in response to the switching command from the system controller 32, thereby converting the video format signal from the video memory 83. Output selectively.

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

It is assumed that the composite disc has already been set to the reproduction 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 disc (step S1). When the pickup switch 22 detects that the pickup 22 has reached the innermost position, the processor performs focusing of the pickup 22 and then
The index code information recorded in the audio lead-in area at the innermost circumference of the disc is read (step S
2) Then, based on the read information, it is determined whether or not the set disc is a composite disc (step S3). If the disc is a compact disc, go to CD play mode (step S4),
Unless there is a command such as program selection, the playback operation continues as it is. Incidentally, since the reproducing operation in the CD play mode is well known, its explanation is omitted here.

When it is determined in step S3 that the disk is a composite disk, the processor immediately accelerates the spindle motor 21 toward the maximum specified rotation speed in the video area (step S5), and simultaneously drives the slider motor 24 to rotate at high speed. The pickup 22 is moved at high speed in the outer peripheral direction of the disc (step S6). Then, when it is detected that the pickup 22 has reached the video area by the detection signal from the position detector 70 (step S7), the processor starts the reproduction operation of the video area (step S8). During the playback of this video area, the processor has at least one field (or one frame) from the disc.
To write the predetermined video information of the above into the video memory 83. The video information to be written may be the first information of the video information, or may be designated in advance by, for example, address designation by a key operation of the operation unit 60.

When it is detected in step S9 that the reproduction of the video area is completed, the processor decelerates the spindle motor 21 toward the maximum specified rotation speed in the CD area (step
At the same time, the slider motor 24 is driven to rotate at high speed to move the pickup 22 to the innermost position of the disk at high speed (step S11). When it is detected that the pickup 22 has reached the innermost disc position by the detection output of the detection switch (not shown) (step S12), the processor starts the reproduction operation of the CD area (step S13).
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 at the time of reproducing the video area and outputs it as the video output, and during the reproduction period of the CD area. Plays back still images. When the reproduction of the CD area is detected by reading the information of the audio lead-out (step S14), the processor drives the slider motor 24 to move the pickup 22 to the home position when there is no particular operation command. Move (step S15), and further loading mechanism (not shown)
The disc is ejected by and the series of playback operations is completed.

When a still image reproduction command is issued from the operation unit 60 during execution of the routine shown in the flowchart of FIG. 9 or the main routine, the processor moves to step S20 and determines whether or not the video area is being reproduced. judge. When it is determined in step S20 that the video area is not being reproduced, the processor restarts the execution of the routine that was being executed immediately before the transition to step S20. If it is determined in step S20 that the video area is being played,
The processor sends the write enable signal w for one field (or one frame) period by the vertical synchronizing signal v so that the video information of one field (or one frame) is written in the video memory 83 (step). S21). Then, the processor turns off the selection switch 80.
Then, the routine is switched to the side (step S22), and the execution of the routine that was being executed immediately before shifting to step S20 is restarted.

After the recorded information in the video area of the composite disc is reproduced in steps S1 to S9 in the above operation, the recorded information in the CD area is reproduced in steps S10 to S14. When a still image reproduction command is issued during reproduction of the video area, video information for one field (or one frame) is written in the video memory 83 and read from the video memory 83 in steps S20 to S22. Is selectively output from the selection switch 80, and still image reproduction is performed.

Even when 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 selected by the selection switch 80 during playback of the CD area.
Is selectively output from and the still image is reproduced.

When the load / CLUT / color 0 to color 7 instructions and load / CLUT / color 8 to color 15 instructions are decoded by the mode / instruction decoder 53 during playback of the video area, the CLUT58 has 4096 of the 4096 colors. Designated
Color data of 16 colors is held.

After that, the light font foreground / background instructions and the like are decoded, so that 16-channel image data is stored in the RAMs 56a to 56p in the image memory device 55. When one of the 16-channel image data is designated by the data corresponding to the key operation of the operation unit 60, the image data of the designated channel is sequentially output from the image memory device 55 and supplied to the CLUT 58. Then, the color data of the color number indicated by the image data is output from the CLUT 58. 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, TCT66 holds the transparency control bits TCB-0 to TCB-15 corresponding to each color number. And
The image memory device 55 out of the held TCB-0 to TCB-15
The one corresponding to the color number indicated by the data read from is selectively output from TCT66.
Output specifies the mixing ratio in the video switch 33. 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 in pixel units. As a result, for example, as shown in FIG. 11, the mixing ratio of the portion corresponding to each pixel outside the area D of the image A by the video format signal output from the video format signal demodulation processing circuit 100 is 100% and each inside the area D is 100%. The mixing ratio of the portion corresponding to the pixel is set to 0%, and the mixing ratio of the portion corresponding to each pixel outside the region D of the image B by the video format signal output from the analog video conversion circuit 65 is set to 0% and the region D. It is possible to form an image C obtained by combining the portion outside the area D of the image A and the portion inside the area D of the image B by setting the mixture ratio of the portion corresponding to each pixel inside to 100%. . Therefore, as shown in FIGS. 12 (A) to 12 (C), a moving picture obtained by a video format signal recorded in the video area or a still picture obtained by the video memory 83 is used to explain subtitles, scores, and scenes by subcodes. It will be possible to insert sentences and the like.

As described above, by sequentially processing the signals read from the disc 20, it is possible to superimpose the images by the subcodes that are associated with each other in the moving image obtained by the video format signal that is FM-modulated and recorded. It is possible to easily obtain a reproduced image that is rich and has no discomfort.

Also, if you insert the image obtained by the subcode into the still image obtained by the video memory 83,
Since the recording information of 20 is continuously read, the images obtained by the subcodes are sequentially reproduced together with the sound in the recording order, and no discomfort occurs.

Also, 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 language of the desired country can be operated by operating the keys on the operation unit 60. It also has the advantage that it is not necessary to create a master disc for each country because subtitle supermarkets can be selectively displayed.

FIG. 13 is a diagram showing another embodiment of the present invention. In this embodiment, in addition to the four modes of zero mode, line graphics mode, TV graphics mode, and user mode in the conventional system, A code to be inserted as the symbol 0 is set to specify the extended line graphics mode and the extended TV graphics mode.

The screen structure in the extended line graphics mode is the same as that in the line graphics mode, and the set TCW (SET TRANSPARE) shown in FIG. 14 is used.
There is an instruction called NT CONTROL WORD) and an instruction called a light font as shown in FIG. Set TCW
The commands are symbols T and W of symbols 4 and 5
Each bit of TCW represented by a total of 8 bits b _{0 to} b ₇
Corresponds to each color number indicating 8 colors in the line graphics mode, and the mixing ratio in the pixel for which the corresponding color number is designated by the value of each bit b _{0 to} b ₇ is either 0% or 100%. This is an instruction to set to the value. Similarly to the light font command in the line graphics mode, the light font command writes the font data to the specified position in the image memory and simultaneously sets symbols 4 and 5 to channels U to W 3
The mixing ratios at each pixel, designated by two color numbers, each represented by a bit, are represented by symbols 4 and 5
0 according to the value of each of the bits T ₀ and T ₁ of the channel T of
This is an instruction to set to either one of% and 100%.

The screen layout in the extended TV graphics mode is the same as that in the TV graphics mode.
There is an instruction called set TCW as shown and an instruction called preset memory as shown in FIG. Set in Extended / TV graphics mode
TCW command is symbol T ~ symbol 7 channel T ~
Each bit of TCW represented by 16 bits of W b _{0 to} b
₁₅ corresponds to each color number indicating 16 colors in the TV graphics mode, and the mixing ratio in the pixel for which the corresponding color number is designated by the value of each bit b _{0 to} b ₁₅ is 0% or 100%. It is an instruction to set to any value. Also, the preset memory instruction sets the mixing ratio in the pixel set to the color of the color represented by the 4 bits of the channels T to W of the symbol 4 to 0% and 10% depending on the value of the bit T of the channel R of the symbol 4.
This is an instruction to set to any value of 0%.

The image information recorded as a sub-code in the recording format as described above sets the TCT66 in the device shown in FIG. 7 TCW command, light font command, preset
It is possible to process the data indicating the mixing ratio by a memory instruction 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 within 1 pack. Any value may be used as long as it does not exceed the number of bits of the data field of.

As described above, the case where the graphic code including the image information and the instruction code indicating the mixing ratio at each position on the two-dimensional screen formed by the video format signal are inserted as subcodes of the codebook information signal and recorded on the recording medium As described above, the case where a graphic code including image information and an instruction code for designating a region 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 will be described below. explain.

First, similar to the method shown in FIG. 13, four types of modes such as the zero mode, line graphics mode, TV graphics mode and user mode in the conventional method, as well as the extended line graphics mode and the extended mode are used. Set the code to insert as symbol 0 to specify the TV graphics mode.

The screen structure in the extended line graphics mode is the same as that in the line graphics mode, and the set window (SET
There is an instruction called WINDOW). The set window instruction in the line graphic mode is an instruction to set a rectangular area called "window" at a position on the screen designated by 4 bits of channels T to W of symbol 4. In the line graphic mode, the screen area has only two fonts in the vertical direction, so the entire screen area is set as the window, and the window in the vertical direction on the CRT display screen is shown as the hatched area in FIG. Only the position is specified. Further, the mixing ratio is designated by the 2 bits of channels R and S forming the symbol 4.

The screen configuration in Extended / TV graphics mode is the same as in TV graphics mode.
An instruction called a set window having the configuration shown in the figure,
A command called the preset memory (PRESET MEMORY) in the TV graphics mode is modified so that the naming and preset border (PRESET B) of the configuration as shown in FIG.
There is an instruction structured as shown in FIG. 22 which is a modification of the instruction called ORDER).

The set window command in the extended TV graphics mode is a rectangular area called a "window" defined by the position on the screen specified by the symbols 6 and 7 and the position specified by the symbols 8 and 9. Is an instruction to set.
The position in the vertical direction of the point (s _x , s _y ) corresponding to the upper left corner of the window is represented by a row by the 5 bits of channels S to W of the symbol 6, and the point (s _x , s _y ). The horizontal position of is represented by a column (COLUMN) by 6 bits of R to W of symbol 7. The position in the vertical direction of the point corresponding to the lower right corner of the window (e _x, e _y) is expressed by the row (ROW) by 5 bits S~W symbol 8, point (e _x, e The position of _y ) in the horizontal direction is represented by a column (COLUMN) by 6 bits of R to W of symbol 9. By this set window command, a window shown by the diagonal lines in FIG. 23 is set on the display screen.

The display in the set window is obtained by mixing the video format signal obtained based on the subcode and the video format signal which is FM-modulated and then multiplexed and recorded together with the digital signal containing the subcode. It is supposed to be done by signal, and symbol 4
The mixing ratio is designated by, for example, one of 0%, 30%, 70%, and 100% by the two bits of channels R and S of.

The preset memory instruction in the extended TV graphics mode is the same as the instruction in the TV graphics mode.
The color of all fonts in the memory is designated as one of the 16 colors from the color number "0" to the color number "15" designated by the 4 bits of W, and the mixture ratio in the window is symbol 4 Is an instruction to set to the value indicated by the two bits of channels R and S forming the.

Further, the preset border command in the extended TV graphics mode is the same as the command in the TV graphics mode.
One of 16 colors from the color number “0” to the color number “15” designated by the 4 bits of W is designated, and the mixing ratio in the window is set to 2 of channels R and S forming the symbol 4. This instruction sets the value indicated by the bit.

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 in which a subcode containing image information is inserted is recorded as described above. In Fig. 24, the disc
20, spindle motor 21, pickup 22, slider 2
3, 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 71,
The display 72 is connected in the same manner as the device of FIG.

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 deinterleave / error correction circuit 52 is also supplied to the window attribute memory device 90. The window attribute memory device 90 has addresses corresponding to all fonts on the screen of 50 horizontal fonts × 18 vertical fonts, and each address can store 2-bit data RAM 91.
Depending on the mode and instruction type indicated by the output of the mode / instruction decoder 53.
Of the data output from the error correction circuit 52, the data indicating the position of the window and the data indicating the mixing ratio are detected, and the data indicating the detected mixing ratio is written to the address corresponding to the font in the window of the RAM 91. , The data corresponding to the mixing ratio 0% of the video format signal obtained by the subcode is written in the address corresponding to the font outside the window, and the contents stored in the RAM 91 are stored in a predetermined order by the horizontal and vertical synchronization signals h and v. It comprises a memory control circuit 92 for sequentially reading. The output data of the window attribute memory device 90 is supplied to the switch control circuit 93. The switch control circuit 93 is configured to supply a control signal to the video switch 33 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 sub-code is directly supplied to the fixed contact v of the changeover switch 95 and at the same time supplied to the fixed contacts x and y via the resistors R ₄ and R _5. . The fixed contact z of the changeover switch 95 is an open end. The changeover switch 95 brings the movable contact t into contact with one of the fixed contacts u, x, y, and z by the control signal output from the switch control circuit 93, and selects one of the fixed contacts u, x, y, and z. The signal supplied to one is selectively output. Further, the video format signal from the video format signal demodulation processing circuit 30 is directly supplied to the fixed contact z of the changeover switch 96 and simultaneously to the fixed contacts y and x via the resistors R ₆ and R ₇ . The fixed contact u of the changeover switch 96 is an open end. The change-over switch 96 is configured to bring the movable contact t into contact with one of the fixed contacts u, x, y, and z by a control signal similarly to the change-over switch 95. The movable contacts t of the changeover switches 95 and 96 are connected to each other. A resistor R ₈ is connected between the common connection point J of these movable contacts t and the ground. 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 at the common connection point J. When the movable contact t of the changeover switches 95 and 96 comes into contact with the fixed contact u, the mixing ratio of the video format signals obtained by the subcode becomes 100%,
When the movable contact t comes into contact with the fixed contact z, the mixing ratio becomes 0%. Further, the values of the resistors R _{4 to} R ₇ are set so 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%. Has been done. The signal derived at the common connection point J is supplied to the video output terminal OUT ₃ .

Even in the above configuration, the mode /
Load by Instruction Decoder 53 CLUT
・ Color 0 to 7 instructions and load ・ CLUT ・ Color 8
~ When 15 color instructions are decoded, the CLUT 58 holds color data of 16 designated colors out of 4096 colors.

After that, the light font foreground / background instructions and the like are decoded, so that 16-channel image data is stored in the RAMs 56a to 56p in the image memory device 55. When one of the 16-channel image data is designated by the data d corresponding to the key operation of the operation unit 60, the image data of the designated channel is sequentially output from the image memory device 55 and supplied to the CLUT 58. Then, the color data of the color number indicated by the image data is output from the CLUT 58. 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, the data indicating the mixing ratio of the video format signal of 0% by the subcode is written in the address corresponding to the font outside the window specified by the window set instruction of the RAM 91 and corresponds to the font in the window. There is a window at the address
Data indicating the mixing ratio designated by the set command is written. The data read from the RAM 91 of the window attribute memory 90 is supplied to the video switch 33, and 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 The mixing ratio is controlled in units of fonts, and the same operation as that of the device of FIG. 7 works.

The case where a composite disc called CDV is used as the recording medium has been described above.
A recording medium other than the above can be used. Regarding a device using a disc called LDD as a recording medium other than CDV, that is, a disc on which FM-modulated video format signals and audio signals and digital audio signals are multiplexed and recorded, refer to FIGS. 25 and 26. Explain.

In FIG. 25, a disk 20, a spindle motor 21, a pickup 22, a slider 23, a slider motor 24, a transmission mechanism 25, an RF amplifier 26, a video format signal demodulation processing circuit 30, a coded information signal demodulation processing circuit 31, a system controller 32. , Video switch 33, operation unit 60, position detector
The 70, the motor drive circuit 71, and the display section 72 are connected in the same manner as in the device shown in FIG.

However, in the coded information signal demodulation processing circuit 31 in this example, the selection switch 35,
The equalizer circuit 36 and the amplifier 37 are removed, and the output of the amplifier 40 is directly supplied to the EFM demodulation circuit 42. Also, TCT
The output of 66 is one input of the selection switch 98. The output of the control data generation circuit 99 is supplied to the selection switch 98 as another input. The selection switch 98 is normally on the b side and selectively outputs the output of the control data generation circuit 99.
The output of the TCT 66 is selectively output by switching to the side a in response to a switching command issued from the system controller 32.

Further, the control data generation circuit 99 is configured to constantly generate data for controlling the movable contacts u of the changeover switches 68, 69 in the video switch 33 to contact the fixed contacts z. Therefore, unless the selection switch 98 is switched to the side a by the switching command issued from the system controller 32, the video format signal demodulation processing circuit
Only the video format signals output from 30 are derived to the common connection point J and the video format signals are not mixed by the graphic code recorded as the subcode.

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

It is assumed that the disc 1 has already been set in 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 to move the pickup 22 to the innermost disc inner peripheral position (step S101). . When it is detected by a detection switch (not shown) that the pickup 22 has reached the innermost position, the processor causes the pickup 22 to focus and then starts the operation of reading the signal recorded on the disk 20 (step S102), based on the control data c output from the video format signal demodulation processing circuit 30, it is determined whether a graphic code is recorded as a subcode of the digital audio signal recorded together with the video format signal (step S103).

If the graphic code is not recorded, the processor shifts to the normal play mode (step S104),
The playback operation continues as it is. Since the operation in the normal play mode is well known, its explanation is omitted here.

When the graphic code is recorded, the processor determines whether or not a superimpose command is issued from the operation unit 60 (step S105). Step S1
When it is determined in 05 that the superimpose command has not been issued, the processor proceeds to step S104. If it is determined in step S105 that the superimpose command has been issued, the processor is the operation unit.
It is determined whether the special reproduction command is issued from 60 (step S106). If it is determined in step S106 that the trick play command has not been issued, the processor switches the selection switch 98 to the a side and inserts an image based on the graphic code into the moving image based on the video format signal from the video format signal demodulation processing circuit 30. (Step S107).

After the execution of step S107, the processor determines whether or not the superimpose instruction is continuously issued from the operation unit 60 (step S108). When it is determined in step S108 that the superimpose designation is continuously issued, the processor moves to step S107 again. When it is determined in step S108 that the superimpose command has not been issued, the processor switches the selection switch 98 to the b side to stop the insertion of the image by the graphic code into the moving image, and the same as in the normal play mode. The reproducing operation is performed (step S109), and the process proceeds to step S103 again.

When it is determined in step S106 that the trick play command is issued, the processor determines whether the disc 20 is a CAV (constant angular velocity) disc based on the control data c output from the video format signal demodulation processing circuit 30. The determination is made (step S110). When it is determined in step S110 that the disc 20 is not a CAV (constant angular velocity) disc, the processor determines that the disc 20 is a CLV (constant linear velocity) disc and performs still image reproduction using the video memory 83. To control each part (step S1
11) Then, the selection switch 98 is switched to the side a so that the image by the graphic code is inserted into the still image by the video format signal from the video format signal demodulation processing circuit 30 (step S112). Incidentally, step S111
In the still image reproduction using the video memory 83, the write enable signal w is transmitted for one field (or one frame) period by the vertical synchronization signal v, and the video information for one field (or one frame) is video-generated. memory
This is done by writing in 83 and switching the selection switch 80 to the b side.

After execution of step S112, the processor determines whether or not the superimpose command is continuously issued (step S113). When it is determined in step S113 that the superimpose command is continuously issued,
The processor again moves to step S112. Step S1
When it is determined in 13 that the superimpose command has not been issued, the processor switches the selection switch 98 to the b side to stop the insertion of the image by the graphic code into the still image and the special reproduction command continues. The determination as to whether or not it has been issued is repeated (step S1
14) When it is determined that the special reproduction command has not been issued, the selection switch 80 is switched to the side a so that normal reproduction is performed (step S115), and the process proceeds to step S103 again.

On the other hand, when it is determined in step S110 that the disc 20 is a CAV (constant angular velocity) disc, the processor has read the graphic code for one screen by the control data c output from the video format signal demodulation processing circuit 30. It is repeatedly determined whether or not (step S116), when the graphic code for one screen is read, the image reproduction position information corresponding to the graphic code is included in the control data c output from the video format signal demodulation processing circuit 30. It is determined whether or not it is included (step S117). If it is determined in step S117 that the image reproduction position information is included, the processor sends a drive command to the motor drive circuit 71 and picks up the pickup 22.
The information reading beam is moved to the position indicated by the image reproduction position information (step S118), and the information reading light spot of the pickup 22 is jumped by one track each time the disk 20 makes one rotation. The reproduction operation is started (step S119).

Further, when it is determined in step S117 that the image reproduction position information is not included, the processor sends a drive command to the motor drive circuit 71 to direct the beam for information reading of the pickup 22 to one screen of a graphic code. After moving to the vicinity of the recording start position (step S120), step S1
Go to 19.

After the execution of step S119, the processor switches the selection switch 98 to the a side to switch the video format signal demodulation processing circuit.
The image based on the graphic code is inserted into the still image based on the video format signal from 30 (step S121), and it is determined whether or not the superimpose command is continuously issued (step S122). Step S1
If it is determined at 22 that the superimpose command is still being issued, the processor again steps.
Move to S121. If it is determined in step S122 that the superimpose command has not been issued, the processor switches the selection switch 98 to the b side to stop the insertion of the image by the graphic code into the still image and the special reproduction command continues. If it is determined that the special reproduction command is not issued, the still image reproduction operation by the one-track jump is stopped and the normal reproduction is performed. After that (step S124), the process proceeds to step S103 again.

When the superimpose command is not issued by the key operation of the operation unit 60 in step S105 in the above operation, even if the graphic code is recorded, the normal reproduction operation is performed by shifting to step S104. The insertion of the image by the graphic code into the image by the video format signal which is FM-modulated and recorded is considered only when the superimpose command is issued by the key operation of the operation unit 60.

Next, when a trick play command is issued by a key operation of the operation unit 60, in the case of a CLV disc, steps S106 and S110
Up to 1 field (or 1) of the video format signal FM-modulated and recorded in the video memory by S113
(Frames) are repeatedly read and then still images are played back, and the recorded information on the disc is continuously read, and the still images are sequentially recorded in the recording order by the video format signals written in the video memory. An image based on the graphic code to be reproduced is inserted.
For a CAV disc, steps S110 and S116-S
The image with the graphic code for one screen is inserted into the still image with the video format signal that is FM-modulated and recorded near the position designated by 122 or the recording start position of the graphic code for one screen.

When the special reproduction command is not issued by the key operation of the operation unit 60, the image by the graphic code is inserted into the moving image by the video format signal which is FM-modulated and recorded in steps S107 to S109.

As described above in detail, in the recording / reproducing system of the image information according to the present invention, the graphic medium including the image information is inserted as the sub-code of the coded information signal in addition to the video format signal and the coded information signal. Since the signal corresponding to the graphic code is mixed with the video format signal when the recording medium is played, the image obtained by the sub-code related to the image by the video format signal is simply processed by sequentially processing the signal obtained from the recording medium. Since it is possible to superimpose the image, it is possible to easily obtain a reproduced image that is rich in changes and has no discomfort.

[Brief description of drawings]

FIG. 1 is a diagram showing types of recording modes in the present invention,
FIG. 2 is a diagram showing the structure of the load transparency control table instruction, FIG. 3 is a diagram showing the correspondence between TCB bit patterns and mixing ratios, and FIG. 4 is a load color lookup. FIG. 5 is a diagram showing table color 0 to color 7 instructions, FIG. 5 is a diagram showing the structure of a light font foreground / background instruction, FIG. 6 is a diagram showing a recording area of a composite disk, and FIG. ,
FIG. 8 is a block diagram showing an example of an apparatus for reproducing image information recorded on a disc by the recording / reproducing system according to the present invention, and FIG. 8 is a block showing a concrete configuration example of the video format signal demodulation processing circuit 30 in the apparatus of FIG. FIGS. 9, 9 and 10 show the system controller 32 of the device of FIG.
11 is a flowchart showing the operation of the processor in FIG.
FIG. 12 and FIG. 12 are views showing images obtained by the apparatus of FIG. 7, FIG. 13 is a view showing kinds of recording modes in another embodiment of the present invention, and FIG. 14 is a set TCW command. FIG. 15 is a diagram showing the configuration, FIG. 15 is a diagram showing the configuration of the light font instruction, FIG. 16 is a diagram showing the configuration of the set TCW instruction, FIG.
FIG. 18 is a diagram showing a configuration of a preset memory instruction, FIG. 18 is a diagram showing a configuration of a set window instruction in an extended line graphics mode in still another embodiment of the present invention, and FIG. Figure showing the window in extended line graphics mode,
FIG. 20 is a diagram showing a configuration of a set window instruction in the extended TV graphics mode, FIG.
FIG. 22 is a diagram showing a configuration of a preset memory instruction, FIG. 22 is a diagram showing a configuration of a preset border instruction, FIG. 23 is a diagram showing a window in the extended TV graphics mode, FIG. 24 and FIG. 25 is a block diagram showing another example of an apparatus for reproducing image information recorded on a disk by the recording / reproducing system according to the present invention,
FIG. 26 is a flowchart showing the operation of the processor in the system controller 32 of the apparatus of FIG. 25, FIG. 27 is a diagram showing a subcode recording format, and FIG. 28 is a screen configuration in the line graphics mode. FIG. 29 is a diagram showing a screen configuration in the TV graphics mode.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI Technical indication H04N 5/937 (72) Inventor Hisao Matsuoka 2-70-1 Hayashi, Tokorozawa, Saitama Prefecture Pioneer Ansahon Co., Ltd. (72) Inventor Yoichiro Tsuda 4-2610 Hanazono, Tokorozawa, Saitama Prefecture Tokorozawa Plant, Pioneer Co., Ltd. (72) Inventor Shoichi Katagiri 4-2610 Hanazono, Tokorozawa City, Saitama Pioneer Co., Ltd. Tokorozawa Plant (72 ) Inventor Satoshi Nomura 2680 Nishi Hanawa, Tatomi Town, Nakakoma-gun, Yamanashi Pioneer Video Co., Ltd. (56) References JP 64-33728 (JP, A) JP 61-156986 (JP, A) JP Sho 61-80689 (JP, A) Actually opened Sho 62-98385 (JP, U)

Claims (2)

[Claims] 1. A graphic code including image information in addition to a video format signal and a coded information signal is inserted as a subcode of the coded information signal and recorded on a recording medium, and the graphic is played when the recording medium is played. A recording / reproducing system characterized in that a signal corresponding to a code is mixed with the video format signal. 2. A still image is formed by writing a portion of a video format signal read from the recording medium corresponding to a predetermined period in the memory when the recording medium is played and then repeatedly reading the stored content of the memory. 2. The recording / reproducing system according to claim 1, further comprising: obtaining a still image video format signal, and mixing a signal corresponding to a graphic code sequentially read from the recording medium with the still image video format signal.