KR100898125B1 - Portable music accompaniment - Google Patents

Abstract

The present invention provides a portable song half-cycle, which provides playback of MP3 data stored in the SD card, and converts its own song, called a portable song half-cycle, into MP3 data and stores it on the SD card.

The present invention provides a power supply means for supplying operating power, a key input means for selectively executing an operation and a function, a control means for executing an overall operation of a portable half-cycle, an operating program of a portable half-cycle and a sound source and MIDI data are stored. 1 storage means, one or more second storage means for expanding the capacity of the sound source and the MIDI data, the pack selection means for selecting the second storage means and the stored sound source and MIDI data according to the control of the control means, the external input Image modulation means for modulating the analog video signal into a digital signal to synthesize the background image, Audio processing means for processing the synthesis of the user's song and accompaniment sound input to the microphone and output through the speaker, Slots disposed at a predetermined position It is inserted into and includes an SD card in which MP3 data is stored.

Portable song half cycle, MP3 player, MIDI data, SD card

Description

Portable music accompaniment

The present invention relates to a portable song half cycle, and more particularly, to provide a playback of MP3 data stored in the SD card, and portable song half cycle for converting their songs called portable song half cycle into MP3 data to be stored in the SD card It is about.

In general, the song accompaniment provides lyrics subtitles of the accompaniment on the background screen and the background screen through the video device and outputs the accompaniment song through the audio device, so that the user can match the sound of the accompaniment song through the microphone to the background screen. It is a device that allows you to sing along with the lyrics while watching the lyrics provided.

Song half cycle is a device that enjoys entertainment in family, work and various gatherings. It is widely used in various age groups and is provided in various forms such as half cycle using computer and half cycle using mobile phone, in addition to dedicated half cycle installed in a specific space called karaoke. .

In general, since the half cycle of the song is not available in various environments due to the limitation of the installation place of the karaoke, the portable half cycle of the song is easily developed and used in homes or outdoor vehicles.

Portable song accompaniment has been implemented such that the output of the lyrics and the accompaniment of the background image and the accompaniment song can be provided in the microphone body, but its function has a problem of limitation of outputting only the background image and the accompaniment song stored in the memory means. .

In addition, although there is a song half-cycle that provides a recording function, in this case it is stored in a fixed memory mounted on the song half-cycle, it can be useful for learning the song, but it is not provided to move to other devices, etc. There is a problem that only playback is provided.

In addition, in the case of storing a song sung by an external storage device, which is a pack-type flash memory, there is a problem that can be used in a PC only after additional steps and conversions have been performed in order to be used in a PC.

The present invention has been invented to solve the above problems, and further includes a slot for inserting the SD card into the portable song half cycle, providing a function of the MP3 player to play the MP3 data stored in the SD card, the singer's song is included The purpose is to provide for the reproduction and listening of general music.

In addition, it converts its own song, which is called a portable song half-cycle, into MP3 data to be stored in the SD card inserted into the slot, and if necessary, separates the SD card and sings it to the personal blog or personal homepage of the Internet. It can be conveniently posted, and can be played on a regular PC so that it can be used easily.

Portable song half period according to a feature of the present invention for realizing the above object is a power supply means for supplying operating power to the portable song half period; Key input means for selecting and executing an operation and a function; Control means for executing the overall operation of the portable song half cycle; First storage means for storing the operation program of the portable song half-cycle and a sound source and MIDI data; One or more second storage means for expanding the capacity of the sound source and the MIDI data; Pack selection means for selecting the second storage means and selecting stored sound sources and MIDI data according to the control of the control means; Image modulating means for modulating an externally input analog video signal into a digital signal to synthesize a background image; Audio processing means for synthesizing the user's song voice and accompaniment song sound input into the microphone and outputting the speaker; It is inserted into a slot disposed at a predetermined position, and includes an SD card for storing MP3 data.

The control means reproduces the MP3 data stored in the SD card and outputs it through a speaker, synthesizes the user's song sound input to the microphone into the synthesized sound effect, and converts it into MP3 data, and converts the lyrics into MP3 data. It further includes a function of storing time on the SD card by matching time synchronization.

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According to the above configuration, the present invention can utilize a portable song half-cycle as an MP3 player by playing MP3 data stored in the SD card, and convert the song that is called to MP3 data and store it in the SD card, thereby editing the song sung by the user. Or you can expect the effect of easily performing a variety of applications using a PC.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

In the drawings, parts irrelevant to the description are omitted for simplicity of explanation, and like reference numerals denote like parts.

In addition, when a part is said to "include" a certain component, this means that it may further include other components, except to exclude other components unless otherwise stated.

1 is a diagram illustrating a configuration of a portable song half cycle according to an embodiment of the present invention, wherein the power supply unit includes an adapter 11, a battery 12, and a selector 13, a first memory unit 21, and a first memory unit 21. A first storage means composed of a second memory portion 22 and a third memory portion 23, a second storage means composed of a plurality of packs 32, a pack selector 31, a video encoder 41, a microphone amplifier ( 51, an audio processing means consisting of a codec 52, a multiplexer 53, a sound DSP 55 and a sound font memory 54, an SD card 60 storing MP3 data, a key input unit 70, a processor ( 101, cache memory 102, memory controller 103, bus controller 104, DSP 105 DSP memory 106, coprocessor 107, coprocessor memory 108, first GPIO 109, The first interface 110, the second interface 111, the image controller 112, the second GPIO 113, and the SD card controller 114 are connected to each other through an internal bus. It is composed of the MCU (100) for controlling the overall operation of the substitute song half cycle.

The adapter 11 constituting the power supply unit supplies the operating power required for the portable song half cycle by down and rectifying the voltage so that a commercial AC power source having a voltage of 50/60 Hz of 110V / 220V can be used in the portable song half cycle.

The battery 12 is composed of a primary battery or a secondary battery mounted on the accommodating means, and supplies the operating power required for the portable song half cycle in a place such as an outdoor place where commercial power is not supplied.

The battery 12 may be applied to a vehicle battery, it is possible to operate using a vehicle cigar jack outdoors.

The selector 13 automatically determines the operating power to the adapter 11 or the battery 12 in using the portable song half cycle, and preferentially uses the power of the adapter 11 when power is supplied.

The first memory unit 21 constituting the first storage means is a NAND flash, in which music data including MIDI data, sound source data, and the like are stored.

When the second memory unit 22 is made of SDRAM, an operating program required for operating the MCU 100 is stored.

The third memory unit 23 is made of SDRAM, and stores background image data of BMP and JPEG format used in the operation of a half-song period.

The pack 32, which is a second storage means, is a means for further expanding the song data, and stores new songs or additional songs as MIDI data.

In addition to storing additional songs, the pack 32 may add game and graphic data, external images for users, and optional functions.

The pack selector 31 analyzes a pack selection command and an access request command applied from the MCU 100 to select a corresponding pack and executes an access command so that the MIDI data requested for access is provided to the MCU 100.

The video encoder 41 converts an analog video signal input from an external device into a digital signal and provides the same to the MCU 100 to provide an image overlay function.

The microphone amplifier 51 amplifies a user's audio signal input from the main microphone MIC1 and the auxiliary microphone MIC2 to a set level.

The codec 52 modulates an analog signal input through the microphone amplifier 51 into a digital signal, and a digital signal obtained by synthesizing an audio signal of an accompaniment song to which an effect sound is applied and a user's voice through the sound DSP 55. Is demodulated to an analog signal and output to a speaker (spk).

The multiplexer 53 is a multiplexer that executes a function of a three-phase gate. The multiplexer 53 adjusts an output path so that signals input and output do not collide under the control of the MCU 100.

The sound font memory 54 stores sampling sound effect data such as sound, chorus, harmony and compression by applying sampling data to the accompaniment song.

The sound DSP 55 processes the MIDI data and the sound source data of the accompaniment song provided by the MCU 100 as an audio signal through the sound font memory 54, applies an effect sound to the audio signal, and inputs it through the codec 52. Synthesizes the user's voice and the audio signal of the accompaniment song.

The SD card 60 stores MP3 data and is inserted into a slot installed at a predetermined position of the portable song half cycle.

The key input unit 70 outputs the general selection signal according to the use of the portable song half cycle, such as song selection, accompaniment start, accompaniment end, and effect sound, and provides the signal to the MCU 100.

The processor 101 included in the MCU 100 is a main processor and processes various operations according to the operation of the portable song half cycle.

The cache memory 102 executes a function of a buffer that temporarily stores execution data of the processor 101.

The memory controller 103 accesses an operating program stored in the second memory unit 22 and MIDI data and sound source data stored in the first memory unit 21 according to a control signal applied from the processor 101 through an internal bus. Access to the background image data stored in the third memory unit 23. FIG.

In addition, the memory controller 103 processes access of the MIDI data and the sound source data from the pack 32 which is the second storage means mounted as an expansion device through the pack selector 31 connected to the second GPIO 113 which is the interface. do.

The bus controller 104 controls the overall operation of the operation of the internal bus.

The DSP 105 decodes the background image data in JPEG format read from the third memory unit 23 so that the DSP 105 can display the image image on an image output apparatus connected to the outside.

The DSP memory 106 performs a function of a buffer in which the DSP 105 decodes and temporarily stores a background image.

The coprocessor 107 assists the main processor 101 to perform graphics processing of the background image, subtitle processing of the lyrics of the accompaniment, overlay of the background image, and the like.

The coprocessor memory 108 performs a function of a buffer for temporarily storing data processed by the coprocessor 107.

The first GPIO 109 is connected to the key input unit 70 to execute the interface of the selection signal according to the operation of the portable song half cycle.

The first interface 110 is connected to the multiplexer 53 so that the data communication path of the multiplexer 53 is determined by the processor 101 and executes an interface of an audio signal stored as MP3 data.

The second interface 111 is connected to the sound DSP 55 in serial communication, and interfaces the MIDI data accessed from the first memory 21 by the memory controller 103 to the sound DSP 55 in serial.

The image controller 112 outputs the background image processed by the DSP 105 and the coprocessor 107 to a display device connected to an external image output device.

Referring to the operation of the present invention including the function as described above is as follows.

First, an operation of using a portable song half cycle as an MP3 player will be described with reference to FIG. 3.

When the power supply key provided in the key input unit 70 is operated while the power supply of the adapter 11 or the battery 12 is supplied by the selector 13, the processor 101 generates a memory controller 103 through the memory controller 103. 2, the operation program stored in the memory unit 22 is loaded and activated in an operation standby state (S101).

In this state, when the playback selection of the MP3 is detected from the key input unit 70 by the processor 101 (S102), the processor 101 accesses the MP3 data stored in the SD card through the SD card controller 114 to access the work memory. It is loaded in (S103).

Then, the MP3 data loaded in the work memory is read to determine whether the effective frame has been loaded (S104) (S105).

When the effective frame has been loaded, it is stored in the cache memory 102 having the function of a buffer (S106), the lyrics are colored, loaded into the work memory, and then transmitted to the codec 52 through the second interface 110. (S107).

At this time, the codec 52 restores the MP3 data applied through the second interface 110 and then outputs it through the speaker spk to allow the user to listen.

When the MP3 data is output in this manner, the buffer counter is decremented (S109), and it is determined whether the playback is finished or the end of playback is selected by the user (S110).

If playback is maintained, the process returns to step S104 to repeat playback of the MP3 data of the next song through the above-described process.

However, when the playback is finished or the end of the playback is selected, enters the standby mode, and when the predetermined time elapses, the power is automatically turned off to protect the system and the power (S111).

In another embodiment, an operation of using a portable song half cycle and an operation of storing a song of the user as MP3 data will be described below.

When the power supply key provided in the key input unit 70 is operated while the power supply of the adapter 11 or the battery 12 is supplied by the selector 13, the processor 101 generates a memory controller 103 through the memory controller 103. 2, the operation program stored in the memory unit 22 is loaded and activated in an operation standby state (S201).

In this case, when a certain accompaniment song is selected by the key input unit 70 and the accompaniment start is selected, the processor 101 controls the memory controller 103 to control the MIDI of the selected accompaniment song stored in the first memory unit 21. Data and sound source data are accessed, and a background image of a JPEG format stored in the third memory unit 23 is accessed (S202) (S203).

Then, the processor 101 extracts the lyrics time and synchronization information of the accessed MIDI data and the sound source data and transmits the accessed MIDI data and the sound source data to the sound DSP 55 through the first interface 111 which is a serial interface. (S204).

Therefore, the sound DSP 55 synthesizes sampling data such as sound, chorus, and harmony in the sound font memory 54 according to the signals of the MIDI data, and then transmits them to the codec 52 through the multiplexer 53.

The codec 52 demodulates the MIDI data obtained by synthesizing the sampling data provided from the sound DSP 55 into an analog signal and outputs the analog data through the speaker spk (S205).

In addition, the background image accessed from the third memory unit 23 is processed by the DSP 105 and the coprocessor 107 to process graphics, subtitles for lyrics of the accompaniment, and overlay of the background images. The controller 112 displays the image through an external image output device.

As the lyrics of the accompaniment song are processed as subtitles in the background image as described above, the user's voice input through the main microphone MIC1 or the auxiliary microphone MIC2 is amplified to the level set by the microphone amplifier 51. The digital signal is modulated by the codec 52 and applied to the sound DSP 55 (S206).

The sound DSP 55 synthesizes the song voice of the user to the MIDI data synthesized with the sampling data, demodulates the digital data into an analog signal through the codec 52, and outputs it to the speaker spk (S207).

Therefore, the user sings in accordance with the music output through the speaker (spk) while watching the lyrics subtitled to the background image displayed through the external display device.

As described above, according to the accompaniment output from the portable song half cycle, it is determined whether MP3 recording selection is required during or just before singing (S208).

When the MP3 recording selection is detected by the processor 101 from the key input unit 70, it is judged as a request to convert the song that is called into MP3 data and store it on the SD card. Data synthesized and output to the codec 52 is converted into MP3 data (S209).

Thereafter, the lyrics and time synchronization information are synthesized with the MP3 data and then stored in the SD card 60 through the SD card controller 114 (S210).

In the process of converting the user's own song to MP3 data and storing it in the SD card 60 as described above, when the song cancellation is selected or accompaniment ends, the MP3 data storage to the SD card 60 is terminated (S211) (S212). (S213).

FIG. 5 is a diagram illustrating another configuration of a portable song half cycle according to an embodiment of the present invention, and illustrates a portable song half cycle in which sound font data, which is sound source sampling data, is stored and used in the storage means 20 in a file form. .

As shown, since it is the same as or similar to the configuration of FIG. 1 described above, a detailed description thereof will be omitted.

By implementing the sound font data as a soft sound source in the form of a file, it does not use the sound DSP and sound font memory represented by the hardware sound source, thereby effectively using the limited space of the half-cycle of the portable song with the size limitation. The cost savings are expected to improve production costs.

In addition, if there is no sound corresponding to a hardware sound source, the sound of a Korean traditional music or a specific instrument of a specific country is very difficult to implement, and since the sound is dependent on the hardware sound source, the MIDI format is also dependent on the hardware sound source. The number of sounds that can be produced is limited by the hardware source.

However, since the soft sound source applied in the present invention is composed of files, it is easy to develop and change the sound source, and there is an advantage in that the sound can be diversified and changed quickly because the sound is sampled and applied to the product. .

In addition, since it is possible to implement a sampling of the unique musical instruments of each country by sampling, it is relatively easy to make a song of another country to be applied to the half-cycle of the song, and the sound that can be produced at the same time is dependent on the hardware source. It also depends on the performance of the system has the advantage of ensuring a variety of portable half-cycle cycle.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It is included in the scope of rights.

1 is a diagram showing the configuration of a portable song half cycle according to an embodiment of the present invention.

2 is a diagram showing a schematic configuration of a portable song half cycle according to an embodiment of the present invention.

3 is a flowchart illustrating a MP3 data playback procedure of a portable song half cycle according to an embodiment of the present invention.

4 is a flowchart illustrating an MP3 data storage procedure of a portable song half cycle according to an embodiment of the present invention.

5 is a diagram showing another configuration of a portable song half cycle according to an embodiment of the present invention.

Claims (11)

Power supply means including an adapter and a battery for down and rectifying commercial AC power for supplying operating power to the portable song half cycle; Key input means for selecting and executing an operation and a function; First storage means for storing the operation program of the portable song half-cycle and a sound source and MIDI data; One or more second storage means for expanding the capacity of the sound source and the MIDI data; Pack selection means for selecting the second storage means and selecting stored sound sources and MIDI data according to the control of the control means; Image modulating means for modulating an externally input analog video signal into a digital signal to synthesize a background image; Audio processing means for synthesizing the user's song voice and accompaniment song sound input into the microphone and outputting the speaker; An SD card inserted into a slot disposed at a predetermined position and storing MP3 data; In the portable song half-cycle including a control means for executing the overall operation of the portable song half-cycle, The audio processing unit includes a microphone amplifier for amplifying a voice signal input from the main microphone and the auxiliary microphone to a set level; A codec for modulating an analog audio signal into a digital signal through a microphone amplifying unit, and demodulating the digital signal obtained by synthesizing the audio signal and the audio signal of the accompaniment to which the effect sound is applied through the sound DSP to analog and outputting the analog signal to a speaker; A multiplexer which adjusts an output path so that signals inputted and outputted under the control of the control means do not collide; A sound font that applies sound sampling data to the accompaniment song and performs sound effect processing; It includes a sound DSP for processing the MIDI and sound source data provided in the serial from the control means as an audio signal and synthesizes the user's voice signal and the audio signal of the accompaniment song input through the codec, The control means includes a main processor; A cache memory having a buffer function for temporarily storing execution data of the main processor; A memory controller for accessing data of the first storage means and the second storage means according to a control signal of the main processor; A bus controller for controlling all operations for operation of an internal bus; A DSP for demodulating background image data in JPEG format accessed by the first storage means; A DSP memory having a buffer function for temporarily storing a background image demodulated by the DSP; A coprocessor to perform graphic processing of the background image, subtitle processing of the lyrics of the accompaniment song, and overlay of the background image; A coprocessor memory having a buffer function for temporarily storing data processed by the coprocessor; A first GPIO connected to a key input unit; A first interface to connect a multiplexer in said audio processing means; A second interface connected in serial communication with a sound DSP in the audio processing means to provide an interface between a sound source and MIDI data; An image controller configured to output a background image processed by the DSP and the coprocessor to a display device connected to an external device; And an SD card controller for reading and playing MP3 data stored in an SD card inserted into a slot, and converting a user's song whose MIDI sound is synthesized and whose lyrics are synchronized with time to MP3 data and storing the MP3 data in the SD card. Portable song half cycle. delete delete delete delete delete delete delete delete delete delete

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