JP4100429B2 - Karaoke equipment - Google Patents

Description

  The present invention relates to a karaoke apparatus, and more particularly to a background video control technique.

  2. Description of the Related Art Conventionally, there is known a karaoke apparatus that displays a lyrics telop indicating karaoke lyrics and a background image of karaoke on a monitor screen, and outputs reproduced karaoke songs and microphone sound from a speaker.

  For example, in the case of a karaoke song of a genre generally considered to be for adults (for example, enka or pops), there are cases in which the contents of the image for adults are included in the background image. Therefore, for example, when a child selects a genre of music that is generally considered for adults, the background video including the above-described video content for adults is displayed on the monitor screen.

Such a situation is not preferable because it may adversely affect children. Therefore, for example, in the invention disclosed in Patent Document 1, when the user selects and sets the child mode, a background video including video content for adults is not reproduced.
Japanese Patent Laid-Open No. 10-20869

  By the way, as disclosed in, for example, Japanese Patent Application Laid-Open No. 2002-99223, a display device capable of displaying different contents depending on the viewing direction has been developed. If this is used successfully, when a child and an adult sing together, the adult will see a background image for the adult, but the child will not be able to see the background image for the adult, but another background image. It is possible to see.

  However, the above-mentioned Japanese Patent Application Laid-Open No. 2002-99223 only discloses a configuration of a display device that can display different images depending on the viewing direction. For example, when a store clerk and a customer face each other across a display device provided on the top of a counter or table, if the store clerk looks at the display device from the left side and the customer looks at the display unit from the right side, the customer does not want to see and only the clerk sees The display contents that can be displayed are set so that they cannot be seen from the right side.

  There is no problem when such a usage method is assumed, but there are the following problems when applied to karaoke. In other words, people who are singing karaoke are not always in a specific place, they may be in a position to view the display device displaying the background image from the right side, or in a position to see from the left side. Yes, you may be in the position to see from the center. Furthermore, there are cases where adults and children are singing apart, and sometimes they are singing close together.

Thus, since the position of the child and the adult who are singing is not determined in advance, it cannot be applied to karaoke as it is.
The present invention has been made in view of the above-described problems. For example, when a child and an adult sing and enjoy each other, an object of the present invention is to display a background image suitable for each to enjoy karaoke more. .

  Karaoke apparatus of the present invention (1: In this column, in order to facilitate understanding of the invention, the components described in the “Best Mode for Carrying Out the Invention” column are shown in parentheses as necessary. Is not meant to limit the scope of the claims by this description.) Is a first microphone (25a) for inputting a voice signal of a karaoke song by a first singer, and a second Input from the second microphone (25b) for inputting a voice signal of karaoke singing by a singer of karaoke, the performance sound of karaoke music, and the first microphone (25a) and the second microphone (25b). A pair of left and right speakers (28a, 28b) for outputting an audio signal of karaoke singing and a predetermined positional relationship with the pair of left and right speakers. Tsu and display means for displaying the flop and background image (36), and a control means for displaying on the display means and the lyrics telop and background video playing the selected music (12, 24), the.

  The display means can simultaneously display different first video and second video in the first display direction and the second display direction respectively corresponding to the first viewpoint and the second viewpoint with respect to the same display screen. It is configured. Furthermore, when a predetermined test sound output from one of the pair of left and right speakers is input by the first microphone and the second microphone, the difference in volume between the test sounds, the first display direction, A storage unit (memory in the control unit 12) is provided for storing a correspondence relationship with the second display direction.

  And the control means in the karaoke apparatus of this invention performs the following control, when the predetermined karaoke music is selected. In other words, the title of the music is displayed on the display means, and after the title is displayed, before the start of the prelude of the selected music and before the display of the background video starts, from either one of the pair of left and right speakers. A predetermined test sound is output, and the test sound is input by the first microphone and the second microphone. Then, based on the volume difference between the test sounds input by the first microphone and the second microphone, and the correspondence relationship stored in the storage means, the presence positions of the first microphone and the second microphone, The correspondence relationship between the first display direction and the second display direction is determined. Then, based on the determined correspondence relationship, the video content to be displayed in the first display direction and the second display direction is determined, and the background video corresponding to the determined video content is displayed on the display means. is there.

  For example, a case where the first singer is an adult, the second singer is a child, and two people sing a karaoke song together will be described as an example. The “predetermined karaoke music” is, for example, music whose background video includes video content for adults. When this karaoke piece is selected and the title is displayed on the display means, the first singer (adult) and the second singer (child) are respectively connected to the first microphone (adult microphone 25a) and the second singer. Prepare for karaoke singing with a microphone (children's microphone 25b). The positions of the first microphone (adult microphone 25a) and the second microphone (child microphone 25b) in this state are determined. However, not the absolute position but the correspondence relationship between the first microphone and the second microphone and the first display direction and the second display direction is determined. Since the prelude has not started at this determination time, it can be appropriately determined based on the volume difference of the test sound.

  In this way, the positional relationship is automatically determined, and based on the determined correspondence, the video content for display in the display direction in which the adult is estimated and the display direction in which the child is estimated are displayed. If the video content to be determined is determined and the background video corresponding to the determined video content is displayed on the display means, the background video suitable for each can be displayed, and karaoke can be enjoyed more.

  In particular, in order to prevent the child from seeing the background video for adults and allowing the adult to see the background video, the control means may execute control as shown in claim 2. . That is, the presence positions of the first microphone and the second microphone are different from each other based on the correspondence between the presence positions of the first microphone and the second microphone and the first display direction and the second display direction. If the display direction is supported, the video content for display in the first display direction and the video content for display in the second display direction are determined to be different. On the other hand, if not, the video content for display in the first display direction is determined to be the same as the video content for display in the second display direction.

  The relationship between the first singer and the second singer is not particularly limited to the relationship between an adult and a child. For example, the relationship may be a man and a woman, or a variety of bosses and subordinates. Conceivable.

  By the way, as described above, after the title is displayed and before the prelude starts, the background video is output based on the position of the microphone, but there is no problem if the singer does not change the location. However, for example, if you want to prevent the child from seeing the background image for adults, if the child changes position during karaoke singing and comes to a position where the background image for adults can be seen, Some action is necessary.

  As one of the countermeasures, the configuration shown in claim 3 can be considered. That is, the emergency switch (27) which a singer can operate is provided in the 1st microphone (25a). The control means performs the following control. That is, after determining the video content to be displayed in the first display direction and the second display direction based on the determined correspondence, and displaying the background video corresponding to the determined video content on the display means Until the background video display processing is completed, it is always determined whether or not the emergency switch has been operated. If it is determined that the emergency switch has been operated, the video content for display in the first display direction is determined to be the same as the video content for display in the second display direction, and the determination is made. The background video corresponding to the video content is displayed on the display means. In this way, the adult can operate the emergency switch provided on the adult microphone so that the child can not see the background video for the adult.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of the karaoke apparatus 1, and FIG. 2 is a block diagram showing a configuration relating to video output and audio input / output.

[Description of configuration of karaoke apparatus 1]
As shown in FIG. 1, the karaoke apparatus 1 includes a control unit 12 that controls the operation of the karaoke apparatus 1 as a whole, an interface unit 14 for connecting the karaoke apparatus 1 to the network 100, and accompaniment content and lyrics of a performance piece. A hard disk (HDD) 16 for storing music data and video data to be shown, an operation unit 18 composed of a plurality of keys and switches, and an infrared communication unit for receiving infrared signals from the remote control terminal 2 and the mobile phone by infrared communication. 20, an operation processing unit 22 that processes a signal from the operation unit 18, an audio signal of a performance music from the music data stored in the HDD 16, and the generated audio signal and microphone (hereinafter referred to as a microphone) 25 a, The sound which amplifies the singing voice signal input via 25b and outputs it to the speakers 28a and 28b The control unit 24, the MIDI sound source 30 that performs karaoke performance based on the karaoke song data (performance data) acquired from the HDD 16 by the audio control unit 24, and the video data acquired from the HDD 16 by the control unit 12 are temporarily stored. Video RAMs 32 and 33, and a video control unit 38 that controls video reproduction based on video data stored in the video RAMs 32 and 33 and display of the reproduced video on the display unit 36 are provided.

  The control unit 12, interface unit 14, HDD 16, infrared communication unit 20, operation processing unit 22, video RAMs 32 and 33, and video control unit 38 are connected by a bus 39. The control unit 12 and the audio control unit 24 are connected by a USB 40. In addition, the control part 12 and the audio | voice control part 24 perform the various processes mentioned later.

  The HDD 16 stores a system program, an application program, and the like for controlling the operation of the karaoke device 1. When the karaoke device 1 is turned on and activated, these programs are read into the control unit 12. .

  The singing voice signal input from the microphones 25a and 25b during karaoke performance is amplified and A / D converted by the voice control unit 24. Then, after an acoustic effect such as echo is added, it is mixed with a karaoke performance sound signal and output to the speakers 28a, 28b. The microphones 25a and 25b described above are an adult microphone 25a and a child microphone 25b, and an emergency switch 27 is provided on the adult microphone 25a. The emergency switch 27 will be described later.

  On the other hand, regarding the reproduction of the video, the control unit 12 outputs the video data related to the background video stored in the HDD 16 to the video RAMs 32 and 33 and controls the video control unit 38 to reproduce the video data and display it. 36. Here, depending on the genre and content of the karaoke song, the background video may include an adult video or may not originally include such an adult video. And for background video that includes videos for adults, two types of video data are set: video data that includes videos for adults and video data that does not include such videos for adults. Yes.

[Description of video output and audio input / output configuration]
First, a configuration related to video output will be described.
The display unit 36 is configured by using a liquid crystal display capable of displaying different images depending on the viewing direction, for example, called a dual view display. Such a display is known, for example, from Japanese Patent Application Laid-Open No. 2002-99223 and Japanese Patent Application Laid-Open No. 2005-84299. In this embodiment, by displaying different images on the right screen and the left screen, as shown in FIG. 7, the right image is seen when viewed from the right direction, and the left image is seen when viewed from the left direction. In addition, when viewed from the vicinity of the center, the left and right images appear as mixed images.

  For such dual view display, as shown in FIG. 2, the video control unit 38 includes a first VGA unit 381, a second VGA unit 382, a switch unit 383, a first video output unit 384, and a second video. And an output unit 385. The first VGA unit 381 controls video playback based on video data stored in the video RAM 32, and similarly, the second VGA unit 382 controls video playback based on video data stored in the video RAM 33. The first VGA unit 381 and the second VGA unit 382 are connected to the first video output unit 384 and the second video output unit 385 via the changeover switch unit 283. The first video output unit 384 controls video display on the left screen of the display unit 36, and the second video output unit 385 controls video display on the right screen of the display unit 36.

  The changeover switch unit 283 includes four switches S1, S2, S3, and S4. By switching ON / OFF of these switches S1, S2, S3, and S4, the following four patterns of connections are realized. Have been able to.

  (1) The first VGA unit 381 and the first video output unit 384 are connected, and the second VGA unit 382 and the second video output unit 385 are connected. In this case, the switches S1 and S2 are ON and the switches S3 and S4 are OFF.

  (2) The first VGA unit 381 and the first video output unit 384 are connected, and the second VGA unit 382 and the second video output unit 385 are connected. In this case, the switches S1 and S2 are OFF and the switches S3 and S4 are ON.

  (3) The first VGA unit 381 is connected to the first video output unit 384 and the second video output unit 385. In this case, the switches S1 and S3 are ON, and the switches S2 and S4 are OFF.

  (4) The second VGA unit 382 is connected to the first video output unit 384 and the second video output unit 385. In this case, the switches S1 and S3 are OFF and the switches S2 and S4 are ON.

The control unit 12 can control ON / OFF of the four switches S1, S2, S3, and S4 of the changeover switch unit 283. Therefore, the control unit 12
“Video data stored in the video RAM 32 is displayed on the right screen of the display unit 36, and video data stored in the video RAM 33 is displayed on the left screen of the display unit 36” pattern “Video data stored in the video RAM 32 is displayed “Displaying the video data stored in the video RAM 33 on the left screen of the display unit 36 and displaying the video data stored in the video RAM 33 on the right screen of the display unit 36” pattern “Displaying the video data stored in the video RAM 32 on both the left and right screens of the display unit 36 "Pattern" The pattern of "displaying the video data stored in the video RAM 33 on both the left and right screens of the display unit 36" can be arbitrarily controlled.

Next, a configuration related to voice input / output will be described.
As shown in FIG. 2, the configuration related to audio input / output is symmetrical (however, as will be described later, the input terminals of the comparators are reversed), The letter is followed by a letter a, and the sign of the right component is distinguished by a letter b after the number. Unless otherwise required, “left side” and “right side” are described. do not do.

  The components for the left side are the left speaker 28a and the adult microphone 25a, and the amplifier 101a, the attenuator 102a, the three comparators 103a, 104a, 105a, and the A / D converter, which are the contents of the karaoke device main body connected to them. The device 106a. On the other hand, the components for the right side are the right speaker 28b and the child microphone 25b, and the amplifier 101b, the attenuator 102b, the three comparators 103b, 104b, 105b, A / D converter 106b.

  The signal (e2) input from the adult microphone 25a is input to the inverting input terminal (− terminal) of the comparator 103a and input to the non-inverting input terminal (+ terminal) of the comparator 104a.

Further, the signal (e4) input from the child microphone 25b is input to the inverting input terminal of the comparator 103b and input to the non-inverting input terminal of the comparator 104b.
On the other hand, the sound signal output from the audio control unit 24 is amplified via the left and right amplifiers 101a and 101b, and output from the left and right speakers 28a and 28b. The output signal from the left amplifier 101a is attenuated via the attenuator 102a. The output (e1) from the attenuator 102a is input to the non-inverting input terminal of the left comparator 103a and also input to the inverting input terminal of the right comparator 104b. The output signal from the right amplifier 101b is attenuated via the attenuator 102b. The output (e3) from the attenuator 102b is input to the non-inverting input terminal of the right comparator 103b and input to the inverting input terminal of the left comparator 104a.

  In the left side component, the output (e1-e2) of the comparator 103a is input to the non-inverting input terminal of the comparator 105a, and the output (e2-e3) of the comparator 104a is inverted of the comparator 105a. Input to the input terminal. Then, the output (e1-2 × e2 + e3) of the comparator 105a is converted into a digital signal by the A / D converter 106a and input to the control unit 12 as digital data D1.

  In the right component, the output (e4-e1) of the comparator 103b is input to the inverting input terminal of the comparator 105b, and the output (e3 + e4) of the comparator 104b is the non-inverting input terminal of the comparator 105b. Input. Then, the output (e1-2 × e4 + e3) of the comparator 105b is converted into a digital signal by the A / D converter 106b and input to the control unit 12 as digital data D2.

  As can be seen from FIG. 2 and the above description, the three comparators 103a, 104a, 105a for the left side and the three comparators 103b, 104b, 105b for the right side have the same arrangement configuration. The input terminals to each comparator are reversed. Therefore, when a test sound is output from the right speaker 28b and the test sound is picked up by the adult microphone 25a and the child microphone 25b, the signal level of the test sound output from the right speaker 28b and the adult microphone 25a If the comparison is made with the signal levels respectively input from the child microphone 25b (that is, the sound pressure is compared), the positions of the adult microphone 25a and the child microphone 25b can be estimated.

  That is, the digital data D1 and D2 input from the left and right A / D converters 106a and 106b to the control unit 12 correspond to the above-described difference in sound pressure. FIG. 5 (a) is an explanatory view showing the correspondence between the degree of perspective from the speaker and the sound pressure difference. As shown in FIG. 5 (a), based on the magnitude of the sound pressure difference, the adult microphone 25a and It can be determined whether the child microphone 25b is present at a position relatively close to the right speaker 28b or at a position relatively distant from the right speaker 28b. This determination method will be described later.

In addition, as for how the control part 12 identifies the microphone 25a for adults and the microphone 25b for children, the following devices can be considered, for example.
(1) The adult microphone 25a and the child microphone 25b are fixedly connected to the karaoke apparatus main body. In this case, the control part 12 can distinguish both reliably.

  (2) Determine the jack position for connecting the microphone. For example, two microphone jacks are prepared in the karaoke apparatus body, and for example, the adult microphone 25a is connected to the left jack, and the child microphone 25b is connected to the right jack. In this case, for example, if the shape of the microphone pin and the shape of the microphone jack are different for adults and children, and the microphone pins can be inserted only into the corresponding microphone jacks, the connection between the two will not be mistaken.

(3) When the microphone is connected to the jack, it may be detected electrically or mechanically. In the case of mechanical detection, the shape of the microphone pin is changed.
[Description of background video display control processing]
Below, the display control process of the background image | video performed by the control part 12 of the karaoke apparatus 1 is demonstrated based on the flowchart of FIG. 3, FIG.

  The flowchart shown in FIG. 3A shows the entire control process when a predetermined karaoke piece is selected. Here, the “predetermined karaoke music” is music whose background video includes video content for adults. A table indicating the correspondence between the song number and information (for example, a flag) indicating whether or not this “predetermined karaoke song” is stored in the HDD 16. Therefore, the song selection number of the karaoke performance song received by the operation unit 18. The data is transmitted to the control unit 12 by the operation processing unit 22. When receiving the music selection number data from the operation processing unit 22, the control unit 12 reads the table indicating the above-mentioned correspondence from the HDD 16 and refers to it. By doing so, it is determined whether or not it is “predetermined karaoke piece”, and if it is “predetermined karaoke piece”, the processing shown in the flowchart of FIG.

Note that the processing when a karaoke piece other than “predetermined karaoke piece” is selected is omitted here.
When the process shown in the flowchart of FIG. 3A is started, the title of the song is first displayed on the display unit 36 (S10). This title display is performed using title data included in the music data.

  Here, the music data format will be described with reference to FIG. The music data stores a header information section storing management information related to the music, a title data section storing title image information used when displaying the title of the music as an image, and MIDI data for music performance. It is composed of a MIDI data part.

  Among these, the header information part includes a MIDI data size and a title data size. The MIDI data portion includes MIDI data for the prelude, data indicating title deletion, MIDI data corresponding to the first chorus, data indicating the end of the chorus, MIDI data corresponding to the second chorus, and data indicating the end of the chorus. It consists of MIDI data corresponding to the third chorus, data indicating that it is a follower, and MIDI data of the follower part. In S10 of FIG. 3A, the title data included next to the header information of the song data song is read and displayed on the display unit 36.

Next, background video output processing is executed (S20). Details of this background video output processing will be described later with reference to the flowchart of FIG.
After the background video output process is executed in S20, karaoke performance is started (S30). The start of the karaoke performance here is a process of reproducing and outputting the MIDI data in the music data shown in FIG. That is, the background video output process in S20 is executed after the title display in S10 and before the karaoke performance is started. That is, it is executed during a period when karaoke performance is not performed.

  Thereafter, the process proceeds to S40, and an emergency switch pressing monitoring process for the adult microphone is executed. Details of the emergency switch press monitoring process will be described later with reference to the flowchart of FIG.

  In S50, it is determined whether or not the performance is finished. If the performance is not finished (S50: NO), the process of S40 is executed. That is, the process of S40 is repeated until the performance ends (S50: YES).

[Background video output processing]
The details of the background video output process will be described with reference to the flowchart of FIG.

  First, a test sound is output from the right speaker 28b (S210). Then, the test sound is picked up by the adult microphone 25a and the child microphone 25b, respectively, and the presence positions of the adult microphone 25a and the child microphone 25b are estimated (S220 to S290).

  As described with reference to FIG. 2, the difference between the signal level of the test sound output from the right speaker 28b and the signal level input from the adult microphone 25a and the child microphone 25b (that is, the sound pressure difference) is as follows. These correspond to the relative positions of the right speaker 28b and the adult microphone 25a and the relative positions of the right speaker 28b and the child microphone 25b, respectively. Therefore, as illustrated in FIG. 5A, based on the magnitude of the sound pressure difference, the adult microphone 25a and the child microphone 25b are present at positions relatively close to the respective right speakers 28b, or relative to each other. It can be determined whether it is located far away.

  Specifically, as illustrated in FIG. 7, a left speaker 28a and a right speaker 28b are arranged on the left and right sides of the display unit 36, respectively, and a test sound is output from the right speaker 28b, and the adult microphone 25a or the child microphone 25b. 7 in advance, the sound pressure difference and either the region where the left image shown in FIG. 7 can be seen, the region where the right image can be seen, or the region where the left and right images appear between them can be seen. It is possible to grasp the correspondence relationship between the presence of the adult microphone 25a or the child microphone 25b.

  Therefore, the correspondence relationship is stored in the memory in the control unit 12, and the presence position (existence region) of the child microphone 25b is determined using the correspondence relationship (S220), and is it located on the right side (S230)? ), Whether it is located at the center (S240) or left side (S250). Similarly, the position determination (S260) of the adult microphone 25a is performed using the above correspondence, and it is determined whether it is located on the right side (S270), located in the center (S280), or located on the left side (S290). To do.

This will be further described using the outputs e1 to e4 shown in FIG.
In S210, since the test sound is output only from the right speaker 28b and the test sound is not output from the left speaker 28a, e1 = 0. That is, the digital data D1 is data obtained by AD conversion of (e3-2 × e2), and the digital data D2 is data obtained by AD conversion of (e3-2 × e4). Therefore, in S220 and S260, the following determination is performed to specify the position.

  First, threshold 1 and threshold 2 will be described. In FIG. 5A showing the correspondence between the degree of perspective from the speaker and the sound pressure difference, the threshold value on the plus side is threshold 1 and the threshold value on the minus side is threshold 2. If the sound pressure difference is larger than the threshold value 1, it is close to the right speaker 28b, that is, located on the right side (region) shown in FIG. On the other hand, if the sound pressure difference is smaller than the threshold value 2, it is far from the right speaker 28b, that is, located on the left side (region) shown in FIG. When the sound pressure difference is equal to or smaller than the threshold value 1 and equal to or larger than the threshold value 2, it is located in the center (region) shown in FIG. Threshold values 1 and 2 are set so as to have such a correspondence relationship. This setting can be performed using the attenuators 102a and 102b.

The position of the adult microphone 25a where the threshold value 2 ≦ (e3-2 × e2) AD conversion value ≦ threshold value 1 is at the center (S280).
The position of the child microphone 25b where the threshold value 2 ≦ (e3−2 × e4) AD conversion value ≦ threshold value 1 is at the center (S240).

The adult microphone 25a position where the AD conversion value of (e3-2 × e2)> threshold value 1 is on the right side (S270).
The position of the child microphone 25b where the AD conversion value of (e3-2 × e4)> threshold 1 is on the right side (S230).

The position of the adult microphone 25a where the AD conversion value of (e3-2 × e2) <threshold 1 is on the left side (S290).
The position of the child microphone 25b where the AD conversion value of (e3-2 × e4) <threshold 1 is on the left side (S250).

  Then, it is determined whether or not the position of the child microphone 25b is on the right side and the position of the adult microphone 25a is on the left side (S300). When the position of the child microphone 25b is on the right side and the position of the adult microphone 25a is on the left side (S300: YES), the video output to the right screen of the display unit 36 is “non-adult”, the left screen The video to be output to is controlled to be “adult” (S310). In this embodiment, “adult video” for adults is stored in the video RAM 32 and supplied to the first VGA unit 381, and “non-adult video” for children is stored in the other video RAM 33 and supplied to the second VGA unit 382. It is configured to be. Therefore, specifically, control is performed so that the switches S1 and S2 are ON and the switches S3 and S4 are OFF. By doing so, the first VGA unit 381 and the first video output unit 384 are connected, and the second VGA unit 382 and the second video output unit 385 are connected. Therefore, the adult video stored in the video RAM 32 is displayed on the right screen of the display unit 36, and the non-adult video stored in the video RAM 33 is displayed on the left screen of the display unit 36.

  On the other hand, if a negative determination is made in S300, the process proceeds to S320, and it is determined whether or not the position of the child microphone 25b is on the left side and the position of the adult microphone 25a is on the right side. When the position of the child microphone 25b is on the left side and the position of the adult microphone 25a is on the right side (S320: YES), the video output to the right screen of the display unit 36 is “adult” and the left screen is displayed. The output video is set to “non-adult” (S330). Specifically, control is performed so that the switches S1 and S3 are OFF and the switches S2 and S4 are ON. In this way, the first VGA unit 381 and the second video output unit 385 are connected, and the second VGA unit 382 and the first video output unit 384 are connected. Therefore, the adult video stored in the video RAM 32 is displayed on the left screen of the display unit 36, and the non-adult video stored in the video RAM 33 is displayed on the right screen of the display unit 36.

  If a negative determination is made in S320, the process proceeds to S340, and both the videos output to the left and right screens of the display unit 36 are set to “non-adult”. Specifically, control is performed so that the switches S1 and S3 are OFF and the switches S2 and S4 are ON. In this way, the second VGA unit 382, the first video output unit 384, and the second video output unit 385 are connected. Therefore, the non-adult video stored in the video RAM 33 is displayed on the left and right screens of the display unit 36.

  The case where the negative determination is made in S320 means that the position of the child microphone 25b and the position of the adult microphone 25a are both the same position, or one of them is located in the center. As described with reference to FIG. 7, when viewed from near the center, the left and right images appear as mixed images. Therefore, in order not to show the adult video to the child, when the child is in the center, that is, when the position of the child microphone 25b is in the center, both the left and right screens need to be non-adult videos. Also, if the child is on either the left or right side and the adult is in the center, the child can only see the non-adult video, but if different images are displayed on the left and right, the adult in the center will see a mixed video. Such a mixed image is an image that cannot be seen, so the left and right screens are displayed the same image, that is, a non-adult image for children.

  FIG. 6A is an explanatory diagram showing the “correspondence relationship between the positions of the adult microphone 25a and the child microphone 25b and the video contents of the left and right screens” in the background video output process described above, and FIG. Indicates the “correspondence between the positions of the adult microphone 25a and the child microphone 25b and the ON / OFF states of the four switches S1, S2, S3, and S4 of the changeover switch unit 283” in the background video output process described above. It is explanatory drawing.

[Emergency switch press monitoring process]
Next, details of the emergency switch press monitoring process will be described with reference to the flowchart of FIG.

  This processing is repeatedly executed until the karaoke performance is completed as described above, and it is determined whether or not the emergency switch 27 provided on the adult microphone 25a is pressed (S410). If the emergency switch 27 is not pressed (S410: NO), the monitoring process is terminated without doing anything. If the emergency switch 27 is pressed (S410: YES), the process proceeds to S420. Both videos output to the left and right screens of the display unit 36 are set to “non-adult”.

  That is, by executing the background video output process in S20 of FIG. 3A, the background video in any of the patterns S310, S330, and S340 in FIG. 4 is displayed on the left and right screens of the display unit 36. However, in S420 of FIG. 3B, the images to be output to the left and right screens of the display unit 36 are both forced to be “non-adult”. However, in reality, since it is executed when an adult operates the emergency switch 27, a background image in any of the patterns of S310 or S330 in FIG. 4 is displayed on the left and right screens of the display unit 36. It is assumed that this is the case. That is, it is considered that an adult operates the emergency switch 27 when a child who was in a place where only a non-adult video can be seen comes to a position where an adult video can be seen or is about to come.

  In addition, in order to make both the images output to the left and right screens of the display unit 36 “non-adult”, as in the case of S340 in FIG. 4 described above, the switches S1 and S3 are OFF and the switches S2 and S4 are set. Control to be ON. In this way, the second VGA unit 382, the first video output unit 384, and the second video output unit 385 are connected. Therefore, the non-adult video stored in the video RAM 33 is displayed on the left and right screens of the display unit 36.

[Description of effects]
(1) According to the karaoke apparatus 1 of the present embodiment, when an adult and a child sing a karaoke song together, a song whose background video content is for adults is selected. In this case, by performing the background video output process (see S20 in FIG. 3A and FIG. 4), the positional relationship between the adult and the child can be determined via the positions of the adult microphone 25a and the child microphone 25b. Judge automatically. Based on the determined correspondence, the contents of the background video displayed on the left and right screens of the display unit 36 are controlled. Specifically, it is possible to allow an adult to see the background video while preventing the child from showing the background video for adults. That is, since background images suitable for adults and children can be displayed, karaoke can be enjoyed more.

  (2) The background video output process in the karaoke apparatus 1 according to the present embodiment outputs the background video based on the microphone position after the title display and before the prelude starts, as described with reference to FIG. Control is in progress. This period is preferable because the prelude has not started yet, so the microphone position can be appropriately determined by the test sound.

  (3) After the karaoke performance starts, there is no problem if the singer does not change the place. However, for example, if you want to prevent the child from seeing the background image for adults, if the child changes position during karaoke singing and comes to a position where the background image for adults can be seen, Some action is necessary. Therefore, in the karaoke apparatus 1 of the present embodiment, when the emergency switch 27 provided on the adult microphone 25a is pressed, both the images output on the left and right screens of the display unit 36 are set to “non-adult”. In this way, if the child who was in a place where only non-adult images can be seen has come to a position where adult images can be seen or is about to come, if the adult operates the emergency switch 27, It is possible to prevent the background image for adults from being shown.

[Other Embodiments]
As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, It is possible to implement in the following various aspects.

  (1) In the above embodiment, a total of two microphones, one each for the adult microphone 25a and the child microphone 25b, is assumed. However, for example, there may be two or more adult microphones and child microphones. . In this case, when at least one of the two or more child microphones is present at a position where the adult video can be seen, the non-adult video is displayed on both the left and right screens of the display unit 36. And if all of the two or more children's microphones are on either the left or right side, and all of the two or more adult microphones are on the side opposite to the side on which the children's microphones are present, Adult video and non-adult video may be displayed.

  (2) In the above embodiment, the relationship between the first singer and the second singer has been described by taking the example of an adult and a child. However, the first singer and the second singer are an adult and a child. It is not limited only to the relationship. For example, it may be a man and a woman, or a boss and a subordinate. Then, the content of the background image may be set as appropriate in accordance with the relationship.

1 is a block diagram illustrating a configuration of a karaoke apparatus 1. FIG. It is a block diagram which shows the structure regarding video output and audio | voice input / output. (A) is a flowchart which shows the whole control process in case the predetermined karaoke music is selected, (b) is a flowchart which shows an emergency switch press monitoring process. It is a flowchart which shows a background video output process. (A) is explanatory drawing which shows the correspondence of the perspective from a speaker, and a sound pressure difference, (b) is explanatory drawing of a music data format. (A) is explanatory drawing which shows the correspondence of the position of the microphone 25a for adults and the microphone 25b for children, and the video content of a left-right screen, (b) is the position of the microphone 25a for adults and the microphone 25b for children, It is explanatory drawing which shows the correspondence of the ON / OFF state of four switch S1, S2, S3, S4 of the changeover switch part 283. FIG. It is explanatory drawing of a dual view display.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Karaoke apparatus, 2 ... Remote control terminal, 12 ... Control part, 14 ... Interface part, 18 ... Operation part, 20 ... Infrared communication part, 22 ... Operation processing part, 24 ... Voice control part, 25a ... Microphone for adults, 25b ... Children's microphone 27 ... Emergency switch 28a ... Left speaker 28b ... Right speaker 30 ... MIDI sound source 32,33 ... Video RAM 36 ... Display unit 38 ... Video control unit 39 ... Bus 100 ... Network 101a, 101b ... amplifier, 102a, 102b ... attenuator, 103a, 103b, 104a, 104b, 105a, 105b ... comparator, 106a, 106b ... A / D converter, 283 ... changeover switch part, 381 ... first VGA part, 382: second VGA unit, 383: switch unit, 384: first video output unit, 385: second video output unit.

Claims (3)

A first microphone for inputting a voice signal of karaoke singing by a first singer;
A second microphone for inputting a voice signal of karaoke singing by a second singer;
A pair of left and right speakers for outputting the performance sound of the karaoke music and the voice signal of the karaoke song input from the first microphone and the second microphone;
Display means for displaying a lyrics telop and a background video in a predetermined positional relationship with the pair of left and right speakers;
Control means for playing the selected music and displaying the lyrics telop and the background video on the display means;
The display means simultaneously displays different first and second images in a first display direction and a second display direction respectively corresponding to a first viewpoint and a second viewpoint with respect to the same display screen. Configured to be possible,
Further, when a predetermined test sound output from one of the pair of left and right speakers is input by the first microphone and the second microphone, a difference in volume between the test sounds and the first sound Storage means for storing the correspondence between the display direction and the second display direction;
The control means includes
When a predetermined karaoke song is selected, the title of the song is displayed on the display means, and after the title is displayed, before the prelude of the selected song starts and before the display of the background video starts In addition, a predetermined test sound is output from one of the pair of left and right speakers, and the test sound is input by the first microphone and the second microphone,
Based on the volume difference between the test sounds input by the first microphone and the second microphone and the correspondence stored in the storage means, the presence positions of the first microphone and the second microphone, and Determining the correspondence between the first display direction and the second display direction;
Based on the determined correspondence, video content to be displayed in the first display direction and the second display direction is determined, and a background video corresponding to the determined video content is displayed on the display means. Karaoke device characterized by. The karaoke apparatus according to claim 1,
The control means is configured to determine whether the first microphone and the second microphone are based on a correspondence relationship between the presence positions of the first microphone and the second microphone and the first display direction and the second display direction. When the presence positions correspond to the different display directions, the video content for display in the first display direction is different from the video content for display in the second display direction. Otherwise, the video content for display in the first display direction is determined to be the same as the video content for display in the second display direction. Karaoke equipment. The karaoke apparatus according to claim 1 or 2,
The first microphone is provided with an emergency switch operable by a singer,
The control means includes
Based on the determined correspondence relationship, video content to be displayed in the first display direction and the second display direction is determined, and a background video corresponding to the determined video content is displayed on the display means. After that, until the background video display process is completed, it is always determined whether or not the emergency switch has been operated,
If it is determined that the emergency switch has been operated, the video content for display in the first display direction is determined to be the same as the video content for display in the second display direction, A karaoke apparatus characterized in that a background video according to the determined video content is displayed on the display means.