JPH0738837A - Recording disk and its recorded information reproducing device - Google Patents

Abstract

PURPOSE:To decrease the amount of data since character and graphic information is displayed by performing enlargement arithmetic for a character signal which is made into image data. CONSTITUTION:When a header discrimination signal is present on a CPU bus 3, a CPU 11 reads in an enlargement rate specification signal which is sent out successively and sends out an X-directional and a Y-directional enlargement rate signal to an enlargement arithmetic circuit 6. The circuit 6 fixes its arithmetic mode to an enlargement arithmetic mode wherein an enlargement arithmetic process corresponding to the enlargement rates is performed. When the discrimination signal is absent on the CPU bus 3, the CPU 11 repeats the control if it is decided that an enlargement arithmetic end signal is not present. When the end signal is present, the CPU 11 sends out a memory write signal to a video memory 9. The memory 9 stores an enlarged character signal of one character. The CPU 11 reads in a player state information signal onto the bus 3 and moves to main control once it is decided that a performance by a disk player 1 ends. Therefore, the amount of data can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording disk on which information such as characters and figures is recorded as image data and an information reproducing apparatus for reproducing recorded information from the recording disk.

[0002]

2. Description of the Related Art In a karaoke system, in addition to the operation of synthesizing a karaoke song and the voice of the singer and outputting the sound, an image corresponding to the atmosphere of the karaoke song and the lyrics information of the song are displayed and displayed. It is known to support singers.

In such a karaoke system, an LD (Lase) in which an audio signal corresponding to a karaoke song, a video signal, and a character signal for forming lyrics are recorded.
r Disc), CD (Compact Disc), or other recording information is read, a reproduction audio signal, a reproduction video signal, and a reproduction character signal are respectively obtained, and desired signal processing is performed on each of these reproduction signals. Sound output and display are displayed. For example, the reproduced audio signal and the voice signal obtained by the singer are combined, and the combined signal is acoustically output by the speaker. Further, the reproduced character signal and the reproduced video signal are combined and displayed on the display in synchronization with the sound output timing of the reproduced audio signal. With such a configuration, video and lyrics information is displayed on the display as the karaoke song progresses.

Here, as a method of converting the characters for forming the lyrics as described above into a data signal, a method of using character font data and a method of capturing the shape of the character as one image character and minimizing the shape of this character are used. A method using image data represented by a set of unit dots can be considered. In such a karaoke system, the latter method of using image data is used in order to reduce the cost of the device.

Therefore, when the size of a character to be displayed on the display (collectively referred to as a character hereinafter) is large, the number of dots for forming one character is also increased, so that it is recorded on the recording disk. The data amount of the image data signal also becomes large. Further, if the data amount becomes large as described above, it takes time to read from the recording disk, and there is a problem that the synchronization with the reproduced audio signal may not be performed well.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and is a recording disk capable of reducing the data amount of character / graphic information to be recorded on the recording disk and reproduction of the recorded information. The purpose is to provide a device.

[0007]

A recording disk according to the present invention is a recording disk in which character / graphic information is recorded as a character signal in the form of image data,
A character data portion in which the character signal is recorded and an enlargement ratio designating signal for designating an enlargement ratio on the display display based on the character signal, which is provided at the head position of the character data portion, are recorded. It is characterized by comprising a header part.

The recorded information reproducing apparatus according to the present invention can
A recorded information reproducing apparatus for reproducing recorded information from a recording disk on which a character signal indicating graphic information and an enlargement ratio designating signal for designating an enlargement ratio on a display based on the character signal are recorded. Reading means for respectively reading the character signal and the enlargement ratio designating signal from a recording disk; and enlarging operation means for enlarging the character signal at the enlargement ratio indicated by the enlargement ratio designating signal to obtain an enlarged character signal. Display means for displaying a display based on the enlarged character signal.

[0009]

A character signal obtained by converting character / figure information into image data, and a character signal and a character signal from a recording disk in which a magnifying power designating signal for designating a magnifying power on the display based on the character signal is recorded at the head portion of the character signal and The enlargement ratio designating signal is reproduced, and the display is displayed based on the enlarged character signal obtained by performing the enlargement calculation on the character signal at the enlargement ratio indicated by the enlargement ratio designating signal.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 shows the configuration of a karaoke apparatus to which the recorded information reproducing apparatus according to the present invention is applied. In the figure, the automatic changer type disc player 1 includes a plurality of recording discs 1a, a disc transport portion 1b, and a player portion 1.
c is provided. When the disc player 1 plays the disc, one of the plurality of recording discs 1a is carried by the carrying unit 1b onto the turntable (not shown) of the player unit 1c. The player unit 1c plays a recording disk on the turntable to obtain a read signal, and supplies the read signal to the data separation circuit 2. The autochanger type disc player 1 executes the above-described operation in response to various player control commands supplied via the CPU bus 3. Further, the autochanger type disc player 1 sends a player state information signal indicating the operating state of the player to the CPU bus 3.

On each of the discs 1a, in addition to an audio signal and a video signal corresponding to a karaoke piece, an image data signal in which character information for forming lyrics is imaged is recorded. FIG. 2 is a diagram showing a signal format of such an image data signal. As shown in the figure, the image data signal is composed of a header part and a character data part. In this character data portion, a basic character signal obtained by converting one character or one figure character into image data with a minimum number of dots is recorded for a plurality of characters or a plurality of figures.

Here, in each of FIGS. 3A and 3B, the numbers "2" and "4" as the character information are converted into image data with the minimum unit dot number being 20 (4 × 5). It is an example of a display in the case. In the figure,
For example, if the blank dot is "0" and the shaded dot is "1", then "2" = "0110,1001,0010,0100,1111""4" = "0010,0110,1010,1111,0010". Can be expressed as That is, at this time, the 20-bit digital signal is recorded in the character data portion as a basic character signal. On the other hand, in the header portion in FIG. 2, a header identification signal indicating the head position of the image data signal and an enlargement ratio designating signal (X direction, Y direction) for designating the size of the character on the display are recorded. To be done. The enlargement ratio designating signal designates the enlargement ratio for enlarging the image in the X direction and the Y direction with reference to the size of the image display in the basic character signal as shown in FIG.

The data separation circuit 2 in FIG. 1 separates and extracts the audio signal (a), the video signal (b), and the image data signal (c) as described above from the read signal supplied from the disc player 1. . At this time, the audio signal (a) is supplied to the sound processing circuit 4, and the video signal (b) is supplied to the image synthesizing circuit 5. The image data signal (c) is supplied to the expansion arithmetic circuit 6 and is also sent to the CPU bus 3. The sound processing circuit 4 supplies to the speaker 8 a signal obtained by desired amplification of a combined signal obtained by combining the audio signal supplied from the data separation circuit 2 and the audio signal supplied from the microphone 7.

The magnifying operation circuit 6 applies to each basic character signal in the image data signal (c) at a magnifying power based on the X-direction magnifying power signal and the Y-direction magnifying power signal supplied via the CPU bus 3. On the other hand, the enlargement calculation is performed to obtain the enlarged character signal (d), which is supplied to the video memory 9. At this time, the enlarging operation circuit 6 sends out an enlarging operation end signal to the CPU bus 3 each time the enlarging operation processing for one basic character signal is completed.

The video memory 9 stores the enlarged character signal (d) according to the memory write signal supplied via the CPU bus 3. Further, the video memory 9 sequentially reads the stored contents, that is, the enlarged character signal (d) according to the memory read signal supplied via the CPU bus 3, and supplies this to the image synthesizing circuit 5. The image composition circuit 5 combines the enlarged character signal (d) supplied from the video memory 9 with the video signal (b) supplied from the data separation circuit 2 and supplies the composite video signal to the display 10. CPU (Central Processing Unit)
The CPU 11 executes various operation controls of the karaoke apparatus having the above-described configuration via the CPU bus 3 in accordance with the operation procedure stored in the ROM (Read Only Memory) 12.

Next, the operation of the recorded information reproducing apparatus according to the present invention applied to such a karaoke apparatus will be described. FIG. 4 shows a subroutine flow of character enlargement control executed by the recorded information reproducing apparatus according to the present invention. First, the CPU 11 determines that the header identification signal is CP.
It is determined whether or not it is present on the U bus 3 (step S1). When it is determined in step S1 that the header identification signal is present, the CPU 11 reads the enlargement ratio designating signal (X direction and Y direction) sent next to the header identification signal, and reads them. The enlargement ratio signal and the Y-direction enlargement ratio signal are sent to the enlargement calculation circuit 6 (step S2). Under the control of step S2, the enlargement calculation circuit 6 takes in the X-direction enlargement ratio signal and the Y-direction enlargement ratio signal, and performs the enlargement calculation process according to the enlargement calculation mode of the enlargement calculation circuit 6 itself. It is fixed to the expansion calculation mode.

At the end of step S2, or when it is determined at step S1 that the header identification signal does not exist, the CPU 11 determines whether or not the enlargement calculation end signal is present on the CPU bus 3 (step). S3). When it is determined in step S3 that the enlargement calculation end signal does not exist, the CPU 11 returns to the operation control of step S1 and repeatedly executes the control as described above. When it is determined in step S3 that the enlargement calculation end signal is present, the CPU 11 sends a memory write signal to the video memory 9 (step S4). By the control in step S4, the video memory 9 stores the enlarged character signal for one character that has been enlarged. Next, CP
U11 reads the player status information signal existing on the CPU bus 3 and determines whether or not the disc player 1 has completed the performance operation (step S5). When it is determined in step S5 that the performance operation has not ended, the CPU 11 returns to the operation control in step S1 and repeatedly executes the above-described control. When it is determined in step S5 that the performance operation is completed, the CPU 11 exits the subroutine flow of the character enlargement control and shifts to the main control.

Next, a character enlarging operation by such character enlarging control will be described. First, FIG.
Consider a case where an image data signal as shown in (a) is recorded on the recording disk 1a. In such an image data signal, a digital signal of (X direction 4) × (Y direction 5) = 20 bits obtained by converting the number “2” shown in FIG. 3A into image data is used as a basic character signal. It is recorded. Further, when this is displayed on the display 10, a designation signal designating that the image is magnified twice in the X direction and once in the Y direction is recorded in the header portion. Disc player 1 and data separation circuit 2
Reads the image data signal as shown in FIG. 5A from the recording disk 1a and reproduces it, and sends it to the CPU bus 3 as an image data signal (c). At this time, the CPU 11 detects the header identification signal in the image data signal (c) sent to the CPU bus 3 under the control of steps S1 and S2, and the expansion is sent next to the header identification signal. A rate designation signal (X direction and Y direction) is read. At this time, the enlargement ratio designating signal designates enlargement by 2 times in the X direction and 1 enlargement in the Y direction, as shown in FIG.
On the other hand, the X-direction enlargement ratio signal indicating 2 times and the Y-direction enlargement ratio signal indicating 1 time are transmitted respectively.

The magnifying operation circuit 6 doubles in the X direction,
The calculation operation is fixed to the expansion calculation mode for performing 1-time expansion in the direction. Next, the enlargement operation circuit 6 performs the enlargement operation of the basic character signal of 20 bits in the image data signal (c) as shown in FIG. 5A in this enlargement operation mode. At this time, the enlargement arithmetic circuit 6 outputs the enlarged character signal (d) of 40 bits {(X direction 8) × (Y direction 5)} because the enlargement is performed twice in the X direction and once in the Y direction. become. The enlarged character signal (d) is
It is supplied to the display 10 through the video memory 9 and the image synthesizing circuit 5, and is displayed and output as shown in FIG.

Next, consider a case where an image data signal as shown in FIG. 5B is recorded on the recording disk 1a.
In such an image data signal, a digital signal of (X direction 4) × (Y direction 5) = 20 bits obtained by converting the number “2” shown in FIG. 3A into image data is used as a basic character signal. It is recorded. Further, when this is displayed on the display 10, a designation signal designating 1-fold enlargement in the X direction and 2-fold enlargement in the Y direction is recorded in the header portion thereof. The disc player 1 and the data separation circuit 2 read the image data signal as shown in FIG. 5B from the recording disc 1a and reproduce it, and send it to the CPU bus 3 as an image data signal (c). At this time, the CPU 11 executes step S1.
By the control of step S2, the header identification signal in the image data signal (c) sent to the CPU bus 3 is detected, and the enlargement ratio designating signal (X direction and Y) sent next to the header identification signal is detected. Direction). At this time, as shown in FIG. 5B, the enlargement ratio designating signal designates enlargement by 1 in the X direction and enlargement by 2 in the Y direction.
Reference numeral 11 sends an X-direction enlargement ratio signal indicating 1 × and a Y-direction enlargement ratio signal indicating 2 × to the enlargement calculation circuit 6, respectively.

The magnifying operation circuit 6 has a magnification of 1 in the X direction and Y
The calculation operation is fixed to the enlargement calculation mode for performing the double enlargement in the direction. Next, the enlarging operation circuit 6 performs an enlarging operation of the 20-bit basic character signal in the image data signal (c) as shown in FIG. 5B in this enlarging operation mode. At this time, the enlargement arithmetic circuit 6 outputs the enlarged character signal (d) of 40 bits {(X direction 4) × (Y direction 10)} because the enlargement is performed in the X direction by 1 time and in the Y direction by 2 times. become. Such an enlarged character signal (d)
Is supplied to the display 10 via the video memory 9 and the image synthesizing circuit 5, and is displayed and output as shown in FIG. 6 (b). That is, even if the size of the character to be displayed on the display is equivalent to 40 bits of the character signal as shown in FIGS. 6A and 6B, the data amount of the character signal to be recorded on the recording disk. Is enough for 20 bits.

Next, consider a case where an image data signal as shown in FIG. 5C is recorded on the recording disk 1a.
In such an image data signal, a digital signal of (X direction 4) × (Y direction 5) = 20 bits obtained by converting the number “2” shown in FIG. 3A into image data is used as a basic character signal. It is recorded. Further, when displaying this on the display 10, a designation signal designating that the image is enlarged twice in the X direction and twice in the Y direction is recorded in the header portion. The disc player 1 and the data separation circuit 2 read the image data signal as shown in FIG. 5C from the recording disc 1a and reproduce it, and send it to the CPU bus 3 as an image data signal (c). At this time, the CPU 11 executes step S1.
By the control of step S2, the header identification signal in the image data signal (c) sent to the CPU bus 3 is detected, and the enlargement ratio designating signal (X direction and Y) sent next to the header identification signal is detected. Direction). At this time, as shown in FIG. 5C, the enlargement ratio designating signal designates a double enlargement in the X direction and a double enlargement in the Y direction.
Reference numeral 11 sends an X-direction enlargement ratio signal indicating 2 times and a Y-direction enlargement ratio signal indicating 2 times to the enlargement calculation circuit 6, respectively.

The magnifying operation circuit 6 doubles in the X direction,
The calculation operation is fixed to the enlargement calculation mode for performing the double enlargement in the direction. Next, the enlargement operation circuit 6 performs the enlargement operation of the basic character signal of 20 bits in the image data signal (c) as shown in FIG. 5C in this enlargement operation mode. At this time, since the enlargement is performed twice in the X direction and twice in the Y direction, the enlargement operation circuit 6 must output an 80-bit {(X direction 8) × (Y direction 10)} enlarged character signal (d). become. Such an enlarged character signal (d)
Is supplied to the display 10 through the video memory 9 and the image synthesizing circuit 5, and is displayed and output as shown in FIG. That is, even if the size of the character to be displayed on the display corresponds to 80 bits of the character signal as shown in FIG. 6C, the data amount of the character signal recorded on the recording disk is 20 bits. Is good.

In the above embodiment, the case where the recorded information reproducing apparatus according to the present invention is applied to a karaoke apparatus has been described, but the present invention is not limited to this karaoke apparatus. In short, it suffices that the recorded information is reproduced from the recording medium on which the character / graphic information is converted into image data and recorded, and the character / graphic information is displayed and output.

[0025]

As described above, according to the present invention, the characters
A character signal and an enlargement ratio designation signal from a recording disk in which a character signal in which graphic information and the like are converted into image data and an enlargement ratio designation signal for designating an enlargement ratio on the display display based on the character signal are recorded at the head thereof. Is reproduced, and the display is displayed based on the enlarged character signal obtained by enlarging the character signal at the enlargement ratio indicated by the enlargement ratio designating signal.

Therefore, according to the present invention, even when the size of the character to be displayed on the display is large, the data amount of the character signal recorded on the recording disk is the minimum data amount forming one character. Since it is good, the data amount of the character / graphic information recorded on the recording disk can be reduced, which is preferable.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a karaoke device to which a recorded information reproducing device according to the present invention is applied.

FIG. 2 is a diagram showing a format of an image data signal of a recording disc according to the present invention.

FIG. 3 is a diagram showing an example of an image display by a basic character signal.

FIG. 4 is a diagram showing a subroutine flow of character enlargement control executed by the recorded information reproducing apparatus according to the present invention.

FIG. 5 is a diagram illustrating a character enlarging operation.

FIG. 6 is a diagram illustrating a character enlarging operation.

[Explanation of symbols for main parts]

 1a Recording Disc 2 Data Separation Circuit 6 Enlargement Operation Circuit 11 CPU

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Juno Hosaka 426-10 Hanazono, Tokorozawa, Saitama Pioneer Co., Ltd. Tokorozawa Plant (72) Inventor Yoshiaki Moriyama 6-6-1, Fujimi, Tsurugashima City, Saitama Pioneer Inside Research Institute, Inc. (72) Inventor Koichi Ono 6-6-1, Fujimi, Tsurugashima City, Saitama Pioneer Research Institute

Claims (2)

[Claims] 1. A recording disk in which character / graphic information is recorded as a character signal in the form of image data, the character data section recording the character signal, and the character data section provided at the head position of the character data section. And a header section in which an enlargement ratio designating signal for designating an enlargement ratio on a display based on the character signal is recorded. 2. Recording information for reproducing recorded information from a recording disk on which a character signal indicating character / graphic information and an enlargement ratio designating signal for designating an enlargement ratio on a display based on the character signal are recorded. A reproducing device, wherein the reading means reads the character signal and the enlargement ratio designating signal from the recording disk, and an enlargement operation is performed on the character signal at the enlargement ratio indicated by the enlargement ratio designating signal. A recorded information reproducing apparatus, comprising: an enlarging calculation means for obtaining the above and a displaying means for displaying a display based on the enlarging character signal.