JP4081880B2 - Karaoke equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
This invention relates to a karaoke apparatus which can display easier to see and superimpose character of song lyrics ticker.
[0002]
[Prior art]
The karaoke apparatus includes a monitor such as a CRT, and in parallel with the performance of the karaoke song, the lyrics of the karaoke song are superimposed on the background video and displayed on the monitor. In the sound source karaoke apparatus that drives the sound source with music data, the lyrics data is also included in the music data, and the video signal of the lyrics telop is generated by reading the character pattern data based on the lyrics data.
[0003]
[Problems to be solved by the invention]
In this way, since the character telop of the lyrics is generated by the character pattern data expressed by dots, unlike conventional karaoke devices using video playback such as optical discs, there is a drawback that the characters become jagged and smooth fade-in / I couldn't fade out. Also, it was not possible to fade out only the title.
[0004]
An object of the present invention is to provide a karaoke apparatus capable of composing a display such as a lyrics telop in an easy-to-view manner.
[0005]
[Means for Solving the Problems]
The invention of claim 1 is a karaoke apparatus that synthesizes a text image of a lyrics telop with a background image that is displayed with a plurality of dots and whose frame is updated at regular intervals.
A first setting means for changing the composition ratio of the background image and the character image in a plurality of stages in units of frames; and a plurality of compositions in which the composition ratio decreases around the character image in a plurality of stages less than the first setting means. Second setting means for forming the outline of each dot in dot units, and a composition ratio calculating means for calculating a final composition ratio in dot units based on the contents of the first setting means and the second setting means. It is characterized by that.
[0006]
According to a second aspect of the present invention, in the first aspect of the invention, there is provided a fade area designating unit for designating a fade area which is an effective area of the first setting unit . The final composition ratio is calculated in dot units based on the contents of the setting means and the second setting means, and the final composition ratio is calculated in dot units outside the fade area based on the contents of the second setting means. It is a means to do.
[0007]
In the present invention, the first setting means sets a multi-stage synthesis ratio A such as 63 stages, and the second setting means sets a multi-stage synthesis ratio M such as 7 stages. If the composition ratio A set in multiple stages is changed, a smooth transition of the video is possible, but the change is not easy because the data is large. On the other hand, although the number of stages of synthesis M is small, the number of stages is rough, but it is possible to change a fine synthesis ratio such as bit units. Therefore, by changing the composition ratio A on a frame basis, smooth fade-in / fade-out is possible, and by changing the composition ratio M on a dot unit, the character outline is made translucent and synthesized with a dot pattern. Can be smooth.
[0008]
Also, by specifying a fade area and enabling the composition ratio A only in this area, it is possible to apply fade-in / fade-out to only a part of the screen area. Since the composition ratio M can be changed in dot units, such area designation is not necessary.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
A karaoke apparatus and a video mixer according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of the karaoke apparatus. 2 and 3 are block diagrams of the video mixer built in the karaoke apparatus.
[0010]
In FIG. 1, in this karaoke apparatus, a karaoke performance unit 21 generates a karaoke performance sound based on music data. The karaoke performance unit 21 includes a sound source that forms a performance sound signal, a PCM decoder that decodes audio data, and the like. In addition, a lyrics telop that is superimposed on the background video in synchronism with the karaoke performance is displayed on the monitor 32.
[0011]
The lyrics telop is developed on the VRAM of the graphic circuit 18 based on the character pattern, and is synthesized with the background video by the video mixer 20. The video mixer 20 not only simply superimposes the lyrics telop on the background video, but also enables intermediate synthesis such as fade-in / fade-out and translucency, and this synthesis is performed on the screen. This can be done only for the department area. The background video is reproduced by the DVD changer 31 that is controlled via the SCSI interface 35.
[0012]
The CPU 10 that controls the entire karaoke apparatus includes a ROM 11, a RAM 12, a hard disk 17, a communication control unit 16, a remote control receiving unit 13, an operation unit 14, a display unit 15, a graphic circuit 18, a video mixer 20, a karaoke performance unit 21, and A DVD changer 31 is connected.
[0013]
The ROM 11 stores a program for starting the karaoke device. The hard disk 17 stores the music data, video data, and the like, as well as programs such as a system program, a karaoke performance program, a loader, and character pattern data. The system program is a program for controlling the basic operation of the apparatus, and is read into the RAM 12 when the karaoke apparatus is activated. A karaoke performance program is a program for controlling the karaoke performance part 21 based on music data. The loader is a program for downloading music data and video data for background video from the distribution center. The character pattern data is data for expanding text information such as lyrics and song names given as code information into character patterns. In the RAM 12, an area for reading the program and an execution data storage area for reading the music data currently being played are set.
[0014]
The communication control unit 16 is a controller for communicating with the distribution center via a communication line and downloading music data and the like. The communication control unit 16 has a built-in DMA circuit, and can directly download downloaded music data and video data to the hard disk 17 without using the CPU 10.
[0015]
The remote control receiver 13 receives the infrared signal sent from the remote controller 30 and restores the data. The remote controller 30 includes a plurality of key switches such as a numeric keypad for inputting a music number and a set key for setting a music number. When the user operates these key switches, the remote controller 30 transmits an infrared code signal corresponding to the operated key switch. The remote control receiver 13 receives this infrared code signal, restores it to data, and inputs it to the CPU 10. The CPU 10 executes various processes such as karaoke song reservation and key change based on this data. The operation unit 14 is provided on the front panel of the karaoke apparatus main body, and includes the same key switch as the remote controller 30. The display unit 15 is also provided on the front panel of the karaoke apparatus main body in the same manner as the operation unit 14 and includes an LED matrix display for displaying the number of the song currently being played and the number of reserved songs.
[0016]
The karaoke performance unit 21 is a circuit unit that generates a karaoke performance sound based on music data, and includes a sound source, a PCM decoder, an effect DSP, and the like. The sound source generates a musical sound based on a musical sound track in the music data, and the PCM decoder reproduces a sound such as a back chorus based on the audio data of the music data. The effect DSP gives an effect such as echo reverb to the generated musical sound and the reproduced sound. Further, a microphone 34 is connected to the karaoke performance unit, and the singing voice signal input from the microphone 34 and the karaoke performance sound are mixed and output from the speaker 33.
[0017]
On the other hand, the graphic circuit 18 has a VRAM and generates a video signal in which a character pattern of lyrics is developed. The lyrics are developed into character patterns by searching the character pattern database stored in the hard disk 17 based on the lyrics display data read from the lyrics track of the music data. The video signal of this character pattern is input to the video mixer 20. Further, the DVD changer 31 drives a DVD on which a background video is recorded, and reproduces the background video in accordance with an instruction from the CPU 10. Although the DVD video data is MPEG-compressed, the DVD changer 31 has a built-in MPEG decoder, which is decompressed and input to the video mixer 20 as a composite video signal. The video mixer 20 superimposes the video signal of the lyrics telop on the video signal of the background video input from the DVD changer 31 and displays it on the monitor 32.
[0018]
The video mixer 20 has a partial fade function and can fade in and fade out the lyrics telop displayed on the background video. When a plurality of lines of lyrics telop are displayed, a part of the lyrics telop is displayed. Only lines can be faded in and out. Note that only the lyrics telop is faded in / out, and the background video is always displayed. This fade function is controlled based on mixing control data input from the CPU 10. The mixing control data is generated based on fade data read from the lyrics track.
[0019]
2 and 3 are block diagrams of the video mixer 20. A video mixer which is a video signal synthesis device according to the present invention includes a designated ratio synthesizer 40 and a synthesis ratio calculation apparatus 41. The designated ratio combiner 40 receives the first video signal V1 and multiplies the first composite ratio G by the multiplier 45 and the first video signal V2 and inputs the second composite ratio (1-G). It has a multiplier 46 for multiplying, and an adder 47 for adding the video signals V1 and V2 multiplied by these synthesis ratios. The input first and second video signals V1 and V2 are reproduced synchronously, and the above synthesis processing is executed for each corresponding dot. In the case of a karaoke apparatus, a video signal of lyrics telop is input as the first video signal V1, and a video signal of background video is input as the second video signal V2.
[0020]
The designated ratio synthesizer 40 may be an analog circuit or a digital circuit, but an example of an analog circuit is shown in FIG. In FIG. 3, the composition ratio G is inputted as 6-bit (64-step) digital data, and a video signal of a level corresponding to this data is outputted to the adder side by a voltage dividing circuit.
[0021]
The composition ratio calculation device 41 calculates the composition ratio G and inputs it to the designated ratio synthesizer 40. The calculation unit 50 includes a calculation unit 50 that performs calculation calculation of the composite ratio G. The calculation unit 50 includes a fade gain register 51 that stores setting data, a fade start line register 52, a fade end line register 53, and a parameter register 54 that stores real-time parameters. It is connected to the. The fade gain register 51 stores a fade gain A that is an upper limit value of the combination ratio G. In the case of a karaoke apparatus, the text of the lyrics telop is displayed at a density of 100% (completely opaque where the background image cannot be seen through), and therefore the fade gain A = 1. The fade start line register 52 stores the upper end position of the area where video signals are combined. The fade end line register 53 stores the lower end position of the area where video signals are combined. The upper end position and the lower end position are designated by numbers of about 483 scanning lines appearing on the screen without the vertical blanking period of the NTSC signal. Each setting data is about 1 to several bytes of data, and is set by the CPU 10 via the interface 42. The fade gain A takes 6 bits and takes a value of 0/63 to 63/63. On the other hand, the real time parameter register 54 stores a transparent signal YS, a translucent gain M, and a fade effective signal BLNK. The transparent signal YS and the fade effective signal BLNK are 1-bit data, and the translucent gain M is 3-bit data (AT0, AT1, AT2), and the setting can be changed for each bit. The translucent gain M takes a value of 1/8 (AT0, AT1, AT2 = 0, 0, 0) to 8/8 (1, 1, 1). To make it completely transparent (characters are not displayed), the transparency signal YS is set to 0.
[0022]
The composition ratio G is within the fade area specified by the fade start line register 52 and the fade end line register 53, and when BLNK = 1,
G = YS * A * M
Calculated by the above, when out of the fade area or when BLNK = 0
G = G = YS * M
Calculate with
Therefore, when the transparent signal YS = 0, the composition ratio G is always 0, the first video signal V1 is not output, and the composite video V3 is only the second video signal V2 (background video).
[0023]
Further, the fade gain A is effective when in the fade area and BLNK = 1, but is output outside the fade area or when BLNK = 0. Further, when BLNK = 0, the fade gain A is invalid.
[0024]
The settings of the fade gain A, the fade start line, and the fade end line, which are setting data, can be changed in units of frames. That is, the setting data set once is valid for at least one frame. On the other hand, the real-time parameter can be changed for each dot of the video signal. Alternatively, parameters for one line (about 400 dots) may be stored at a time and read sequentially. By changing this real-time parameter, it is possible to change the composition ratio in units of one dot.
[0025]
4 to 6 are diagrams for explaining the function of the video mixer 20. In the description of these drawings, a case where the background video of the karaoke apparatus and the lyrics telop are mixed will be described. The lyrics telop is input as the video signal V1, and the background video is input as the video signal V2.
[0026]
FIG. 4 is a diagram for explaining a method of making a character appear soft by adding a translucent outline to the character of the lyrics. For example, when the fade gain A is set to 1 in order to prevent the character body portion from being completely opaque and displaying a background image. Since only the background video needs to be displayed for the portion without the lyrics, by setting the transparent signal YS to 0, the video signal V1 is ignored regardless of other setting data (such as A) and parameters (such as M). Only the signal V2 (background video) is output to the adder 47 side on the output side.
[0027]
On the other hand, since only the character is displayed on the main body of the character and the background image is not displayed, the transparent signal YS is set to 1 and the translucent gain M is also set to 1 (= 8/8). As a result, the final composition ratio G also becomes 1, 100% of the video signal V1 (letter characters) is output, and no background video is output.
[0028]
This character has three levels of contours (contour 1, contour 2, contour 3), which are displayed in semi-transparency with different transparency. For the contour 1 closest to the character body, the translucent gain M is set to 6/8, and the composition ratio G is also 6/8. Therefore, a video signal synthesized with a ratio of 75% of the lyrics and 25% of the background video is output. In the next contour 2, the translucent gain is set to 4/8, and the composition ratio G is also 4/8. Therefore, a video signal in which lyrics are combined at a ratio of 50% and background video at a ratio of 50% is output. Furthermore, the outermost contour 3 has a semi-transparent gain set to 2/8, and the composition ratio G also becomes 2/8. Therefore, a video signal synthesized with a ratio of 25% of the lyrics and 75% of the background video is output. In this manner, the outer contour is thinner and the background image is darker, so the characters are soft and easy to read. Such switching of the composition ratio in units of dots calculates the composition ratio G by multiplying the translucent gain M that can be rewritten in bit units (AT0, AT1, AT2) while the fade gain A is fixed. This is possible.
[0029]
FIG. 5 is a diagram for explaining a method of changing the display density of the instruction text displayed accompanying the lyrics and the lyrics main body. For example, in the case of a duet song, instructed words such as “male” and “female” are displayed at the top of the lyrics in order to indicate the lyrics that a man sings and the lyrics that a woman sings. If this is displayed in the same manner as the lyrics main body, it is difficult to distinguish from the lyrics. For example, when the lyrics are displayed in English and the instructions are displayed in English such as “Male” and “Female”. Singer who is not fluent in English thinks that this is part of the lyrics and sings, so the lyrics may not match the song. In order to prevent this, the instruction words such as “male”, “female” and “breathing” are displayed lighter and translucently than the lyrics body.
[0030]
In this case, as in the case of FIG. 4, the case where the fade gain A = 1 is set to make the lyrics main body completely opaque is taken as an example. In this case, the translucent gain M of the lyrics main body is 1 (8/8). And the display part of the instruction words such as “male”, “female” and “breathing” can be displayed lighter than the lyrics main body by setting the translucent gain M to an intermediate value such as 4/8. Can be easily distinguished from the lyrics itself.
[0031]
In this case, as shown in the lower part of the drawing, the translucent gain M is set to 8/8 for the display section of the lyrics main body, and M is set to 4/8 for the display section of the instruction text. Then, YS is switched to 1/0 according to the shape of the character. In addition, you may use together the semi-transparent display of this instruction word, and the semi-transparent outline of the character demonstrated in FIG.
[0032]
FIG. 6 is a diagram for explaining a method of fading only a partial area of the screen. In the figure, the title “Koisutefu” is displayed at the center of the screen, and two lines of lyrics are displayed at the bottom of the screen. Further, “YAM” is displayed on the left side of the title, and “Karaoke” is displayed on the right side of the title. Of these, only this title character is faded out.
[0033]
A rectangular area including the title character is set as a fade area, and a fade start line and a fade end line are set in the fade start line register 52 and the fade end line register 53 in order to designate the upper end and the lower end of the fade area. The horizontal section of the fade area is set by the BLNK parameter. As shown in the figure, BLNK = 1 is set only in the horizontal section of the fade area during scanning of the scanning line. The synthesis ratio calculation device 41 is sandwiched between the fade start line and the fade end line and enables the fade gain A only in the fade area of BLNK = 1, and calculates the synthesis ratio G by G = YS * A * M. Outside this fade area, the fade gain A is invalidated and the composition ratio G is calculated by G = YS * M.
[0034]
Then, as shown in the lower part of the figure, by gradually shifting A from 63/63 to 0/63 for each frame, the fade area display gradually fades down in 63 steps, and the title of “Koi Stefu” Characters can be smoothly faded out. That is, “Koisutefu” gradually becomes thinner, but the characters “YAM”, “Karaoke”, “Unrecognized ... until the question” do not become thinner.
[0035]
In this case, since the composition ratio G is calculated outside A in the fade area and A is ignored, the result is the same as A = 1, and the character outline is made translucent (FIG. 4) and the instruction text is made translucent ( 5) and this fade-out can be used together on the same screen. In addition, a translucent outline can be added to a title character that fades out.
[0036]
When fading in characters or the like, the fade gain A may be gradually increased from 0/63 to 63/63 every frame.
[0037]
If some areas are not set as fade areas, all areas on the screen may be designated as fade areas to enable the fade gain A, and all areas on the screen may be excluded from the fade areas and fade gain A may be set. May be disabled.
[0038]
The setting data and the real-time parameters may be written in the lyrics track of the music data for karaoke performance, or the karaoke apparatus may automatically generate the karaoke device at that time.
[0039]
Further, a 1-bit parameter for invalidating the translucent gain M may be stored in the parameter register 54. For example, when this parameter is ATON, M is valid when ATON = 1, but when ATON = 0, M is regarded as 1 regardless of its value. By doing so, it is possible to realize expressions having different effects while maintaining the same A and M.
[0040]
In the above embodiment, the case where the video signal V3 is generated by synthesizing the two video signals V1 and V2 has been described. However, the present invention can be applied even when there are three or more video signals. In that case, the fade gain A and the translucent gain M may be three data such that A1 + A2 + A3 = 1 and M1 + M2 + M3 = 1. Moreover, the third may be the remainder of the two data.
[0041]
Moreover, although the said embodiment demonstrated the apparatus which superimposes a lyrics telop on a background image | video, the image | video which should be synthesize | combined is not limited to these. Both may be analog photographic images.
[0042]
【The invention's effect】
As described above, according to the present invention, it is possible to create a composite image that is easy to view by combining a plurality of images to realize smooth fade-in and fade-out, and removing jaggedness in dot units.
Also, these can be performed separately in a part of the screen at the same time.
[Brief description of the drawings]
FIG. 1 is a block diagram of a karaoke apparatus according to an embodiment of the present invention. FIG. 2 is a block diagram of a video mixer used in the karaoke apparatus. FIG. 3 is a block diagram of a specified ratio synthesizer of the video mixer. [Fig. 5] A diagram for explaining the function of the video mixer. [Fig. 5] A diagram for explaining the function of the video mixer. [Fig. 6] A diagram for explaining the function of the video mixer.
DESCRIPTION OF SYMBOLS 18 ... Graphic circuit, 20 ... Video mixer, 32 ... Monitor, 40 ... Designated ratio synthesizer, 41 ... Synthesis ratio calculation device, 42 ... Interface, 45, 46 ... Multiplier, 47 ... Adder, 50 ... Operation part, 51 ... Fade gain register, 52 ... Fade start line register, 53 ... Fade end line register, 54 ... Parameter register

Claims (2)

A karaoke device that synthesizes a text image of a lyrics telop with a background image that is displayed with a plurality of dots and whose frame is updated at regular intervals,
First setting means for changing the composition ratio of the background image and the character image in a plurality of stages in units of frames ;
Second setting means for forming a plurality of contours with a dot ratio on the periphery of the character image, the composition ratio being reduced in a plurality of stages less than the first setting means;
Composition ratio calculation means for calculating a final composition ratio in units of dots based on the contents of the first setting means and the second setting means;
Karaoke device equipped with. A fade area designating unit for designating a fade area which is an effective area of the first setting unit ;
The composition ratio calculation means calculates the final composition ratio in dots based on the contents of the first setting means and the second setting means in the fade area, and the contents of the second setting means outside the fade area. The karaoke apparatus according to claim 1, wherein the karaoke apparatus is a means for calculating a final composition ratio in units of dots on the basis of.

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