CN2751356Y - Voice playback device using USB OTG transmission interface - Google Patents

Abstract

The utility model relates to a voice playing device, it is connected with a Universal Serial Bus (USB) device, and this voice playing device contains: a storage medium for storing a voice file; an MP3 signal converter electrically connected to the storage medium for converting the voice file into a digital voice signal in MP3 format for output; a USB OTG (On-The-Go) controller electrically connected to The storage medium for transmitting The voice file to The USB device and/or reading The voice file stored in The USB device; and a control module electrically connected to the storage medium, the MP3 signal converter and the USB OTG controller for controlling the operation of the storage medium, the MP3 signal converter and the USBOTG controller. Utilize the utility model discloses, need not rely on personal computer can with external USB device carry out data exchange or sharing.

Description

Voice playback device using USB OTG transmission interface

technical field

The utility model relates to a voice playback device, in particular to a voice playback device using a USB OTG transmission interface.

Background technique

Driven by the trend of digitalization, various consumer electronics products have been regarded as an important force driving market growth after information products. Undoubtedly, this development trend will continue, and with the advancement of technology, the industry will integrate richer and higher-quality digital voice content into more diverse devices.

Among them, the MP3 player is one of the consumer electronics products. Currently, the MP3 players developed on the market generally use a USB Client port to electrically connect with a storage unit. The music in the MP3 file format is stored in the storage unit, and the stored music in the MP3 file format is decoded into a digital voice signal by an MP3 decoder and then played. When the user wants to change the music tracks in the MP3 file format, he needs to connect the USB client port of the MP3 player to the USB port of a personal computer through a transmission line first, and then transfer the MP3 music originally stored in the hard disk of the personal computer. Only when the file is downloaded to the storage unit of the MP3 player can the updating action be completed. Or when the user wants to share the music files stored by himself with others, he needs to first copy the music files stored in the storage unit of the MP3 player to the personal computer, and then connect another multimedia device to the personal computer. Share music in MP3 file format.

Because the known MP3 player must rely on the personal computer to exchange or share its stored data with another USB device, it cannot directly communicate and exchange data with another USB device, and the known MP3 player can only Playing voice signals in MP3 format is not practical and lacks flexibility in today's era where everything is about efficiency.

Therefore, how to develop a voice playback device using a USB-OTG transmission interface that can improve the lack of the above-mentioned known technology and can perform data exchange or share with another USB device without a personal computer is currently a problem. problems that urgently need to be resolved.

Utility model content

The main purpose of the utility model is to provide a voice playback device using a USB-OTG transmission interface that can directly exchange data and communicate with an external USB device through a USB-OTG controller and can receive any voice signal for encoding and decoding. To solve the shortcomings of traditional voice playback devices that rely on personal computers for data exchange or sharing, which are not practical and have poor flexibility in use.

In order to achieve the above-mentioned purpose, a more broad implementation of the utility model is to provide a voice playback device, which is connected to a Universal Serial Bus (USB) device, and the voice playback device includes: a storage medium for storing a Voice file; an MP3 signal converter, electrically connected to the storage medium, in order to convert the voice file into a digital voice signal output in MP3 format; a USB OTG (On-The-Go) controller, electrically connected to the storage medium medium, which transmits the voice file to the USB device and/or reads the voice file stored in the USB device; and a control module, electrically connected to the storage medium, the MP3 signal converter and The USB OTG controller is used to control the operation of the storage medium, the MP3 signal converter and the USB OTG controller.

Wherein, the voice playback device also includes a voice signal converter electrically connected to the storage medium, the MP3 signal converter and the control module, which receives a voice signal in a non-MP3 format and converts the voice signal into a non-MP3 format audio files, and/or convert non-MP3 format audio files stored in the storage medium into a digital audio signal for output. The control module may include an infrared transmission interface and a remote controller, and the remote controller is connected to the infrared transmission interface through wireless transmission to control the operation of the storage medium, the MP3 signal converter and the USB OTG controller. The control module includes a processor, a display unit, a keypad, a read-only memory and a random access memory, and the keypad is electrically connected to the processor to generate information so that the processor can control the The MP3 signal converter and the USB OTG controller perform corresponding operations, the display unit is electrically connected to the processor and the keypad to display the information, and the read-only memory is electrically connected to the processor to store the The system program instructions and data required for the operation of the voice playback device, the random access memory is electrically connected with the processor to store the instructions and data temporarily stored by the processor, and the display unit is a liquid crystal display. The control module may also include an infrared transmission interface, a remote controller, a processor, a display unit, a keypad, a read-only memory and a random access memory, and the remote controller communicates with the infrared transmission interface signal via wireless transmission connected to control the operation of the storage medium, the MP3 signal converter and the USB OTG controller, the keypad is electrically connected to the processor to generate a message so that the processor controls the MP3 signal converter and the MP3 signal converter according to the information The USB OTG controller performs the corresponding operation, the display unit is electrically connected to the processor and the keypad to display the information, and the read-only memory is electrically connected to the processor to store the voice playback device required for operation system program instructions and data, the random access memory is electrically connected to the processor to store the instructions and data temporarily stored by the processor. The storage medium is a flash memory. The MP3 signal converter is an MP3 codec for converting the voice file in MP3 format stored in the storage medium into a digital voice signal in MP3 format for output.

Another broad implementation of the utility model is to provide a voice playback device, which receives a voice signal and is connected with a Universal Serial Bus (USB) device, and the voice playback device includes: an MP3 signal converter; A voice signal converter, electrically connected to the MP3 signal converter, for receiving the voice signal and converting the voice signal into a first voice file, and/or sending the voice signal to the MP3 signal converter for converting The voice signal is converted into a second voice file in MP3 format; a storage medium is electrically connected to the MP3 signal converter and the voice signal converter for storing the first voice file and the second voice file in MP3 format ; A USB OTG (On-The-Go) controller, electrically connected to the storage medium, in order to transmit the voice files to the Universal Serial Bus device and/or read the stored audio files of the Universal Serial Bus device Voice files; and a control module, electrically connected to the storage medium, the MP3 signal converter, the USB OTG controller and the voice signal converter, for controlling the storage medium, the MP3 signal converter, and the USB OTG control device and the voice signal converter operates.

Wherein, the voice signal converter is a voice codec, which receives a voice signal in a non-MP3 format to convert the voice signal into a voice file, and/or stores a voice file in a non-MP3 format on the storage medium Converted into a digital voice signal output. The control module may include an infrared transmission interface and a remote controller, and the remote controller is connected to the infrared transmission interface signal by wireless transmission to control the storage medium, the MP3 signal converter, the voice signal converter and the USB OTG control device operation. The control module can also include a processor, a display unit, a keypad, a read-only memory and a random access memory, the keypad is electrically connected to the processor to generate a message to make the processor according to the The information controls the corresponding operation of the MP3 signal converter, the voice signal converter and the USB OTG controller, the display unit is electrically connected with the processor and the keypad to display the information, the read-only memory and the The processor is electrically connected to store the system program instructions and data required for the operation of the voice playback device. The random access memory is electrically connected to the processor to store the temporarily stored instructions and data of the processor. The display unit is a LCD Monitor. The MP3 signal converter is an MP3 codec for converting the voice signal into a second voice file in the MP3 format and/or converting the voice file in the MP3 format stored in the storage medium into a digital voice signal in the MP3 format output.

Utilizing the utility model, data exchange or sharing can be performed with an external USB device without relying on a personal computer.

The utility model must be explained by following accompanying drawing and embodiment, will obtain a deeper understanding:

Description of drawings

FIG. 1 is a schematic block diagram of a circuit structure of an audio playback device according to a first preferred embodiment of the present invention.

FIG. 2 is a schematic block diagram of the circuit structure of the audio playback device according to the second preferred embodiment of the present invention.

FIG. 3 is a schematic block diagram of a circuit structure of an audio playback device according to a third preferred embodiment of the present invention.

Wherein, the appended symbols are explained as follows:

10: MP3 player 11: MP3 codec

12: Storage media 13: USB OTG controller

141: Infrared transmission interface 142: Remote control

20: Voice playback device 21: Voice codec

22: MP3 Codec 23: Storage Media

24: USB OTG controller 251: Infrared transmission interface

252: Remote control 30: Voice playback device

31: Control module 311: Button keyboard

312: LCD display 313: Processor

314: Read Only Memory 315: Random Access Memory

32: Speech Codec 33: MP3 Codec

34: USB OTG controller 35: Storage media

361: Infrared transmission interface 362: Remote control

Detailed ways

Some typical embodiments embodying the features and advantages of the present utility model will be described in detail in the description in the following paragraphs. It should be understood that the utility model can have various changes in different aspects, all of which do not depart from the scope of the utility model, and the description and drawings therein are used for illustration in nature, not for limitation The utility model.

Please refer to FIG. 1 , which is a schematic block diagram of the hardware structure of the voice playback device according to the first preferred embodiment of the present invention. As shown in Figure 1, the circuit structure shown in the present embodiment is to use the MP3 player 10 of USB OTG transmission interface, and its main component comprises MP3 signal converter, storage medium 12, USB OTG (On-The-Go) controller 13. An infrared transmission interface 141 and a remote controller 142 . Wherein, the MP3 signal converter is an MP3 codec (CODEC) 11 .

The storage medium 12 is electrically connected with the MP3 codec 11, the USB OTG controller 13 and the infrared transmission interface 141. It can be used to store the voice files stored in the MP3 player 10 itself on the one hand, and can be used to store externally-used audio files on the other hand. Voice files shared by serial bus client (USB Client) devices. In some embodiments, the storage medium 12 is preferably a flash memory (flash memory), but not limited thereto, and any storage medium that can be used to store audio files can be incorporated herein by reference.

The MP3 codec 11 is electrically connected with the storage medium 12. When the user wants to play the MP3 voice file, the MP3 codec 11 will read the voice file in the storage medium 12 and decode it into a digital voice signal output in MP3 format, so Once, the user can listen to the content of the MP3 digital audio signal.

The USB OTG controller 13 is electrically connected with the MP3 codec 11, the storage medium 12, and the infrared transmission interface 141. It uses an additional standard USB OTG interface of USB2.0, and can use a transmission line (not shown) to communicate with any Universal Serial Bus The host end (USB Host) device or the USB client device are connected, so that the data stored respectively by the MP3 player 10 of the present utility model and any external device of the USB interface can directly read and communicate with each other.

In this embodiment, MP3 player 10 comprises the control module that is made up of infrared transmission interface 141 (IR Interface) and remote controller 142 (remote controller), and remote controller 142 is connected with infrared transmission interface 141 signal by wireless transmission mode, uses To control the storage medium 12, the MP3 codec 11 and the USB OTG controller 13 to operate, so when the user wants to play the MP3 audio file, a control signal can be sent to the MP3 codec 11 and the storage medium 12 by the remote controller 142, It is used to drive the MP3 codec 11 to the storage medium 12 to read the MP3 audio file to be played and decode it into a digital audio signal in MP3 format for output, so that the user can listen to the content of the MP3 audio signal. Similarly, the remote controller 142 can also transmit control signals to the USB OTG controller 13 and the storage medium 12, so as to drive the USB OTG controller 13 to the storage medium 12 to read the voice file and send it to a USB host device, or to drive USB OTG controller 13 reads its stored voice file to USB client device and deposits and places in storage medium 12.

Therefore, the audio playback device of the present utility model can directly exchange or share data with any external device using a USB interface without the need for a personal computer, has the characteristics of independent operation, and can perform MP3 audio files through the codec The playback function allows the utility model to use the MP3 player of the USB OTG transmission interface to be more practical and more flexible in today's era of emphasis on efficiency.

Please refer to FIG. 2 , which is a schematic block diagram of the hardware structure of the voice playback device according to the second preferred embodiment of the present invention. As shown in Figure 2, the audio playback device 20 of the present embodiment includes a voice signal converter, an MP3 codec 22, a storage medium 23, a USB OTG controller 24, an infrared transmission interface 251 and a remote controller 252. Wherein, the circuit design principle of the MP3 codec 22, the storage medium 23, the USB OTG controller 24, the infrared transmission interface 251 and the remote controller 252 and the purpose and effect that can be achieved have been described in detail in the first preferred embodiment, So no more details.

In addition to the MP3 codec 22, the voice playback device 20 of the present embodiment further includes a voice signal converter, which is a voice codec 21, but it is not limited thereto, mainly with the storage medium 23, the MP3 codec 22 and the infrared transmission interface 251 are electrically connected, and can be used to receive any voice signal in the non-MP3 format input from the outside, such as a voice signal in the WAV format, and convert the voice signal into a voice file in the non-MP3 format and store it in the storage In the medium 23, the voice file can be transmitted to an external USB host device by the USB OTG controller 24 for data exchange or sharing, or the voice codec 21 can read the non-MP3 format stored in the storage medium 23 audio file and convert it into a digital audio signal for output in order to play the digital audio signal in non-MP3 format.

Of course, in some embodiments, in addition to converting the received voice signal into a voice file in a non-MP3 format, the voice codec 21 can also transmit the received voice signal to the MP3 codec 22 for encoding and decoding by MP3. The device 22 converts the voice signal into a voice file in MP3 format.

Please refer to FIG. 3 , which is a schematic block diagram of the hardware structure of the voice playback device according to the third preferred embodiment of the present invention. As shown in Fig. 3, in this embodiment, the voice playback device 30 that uses USB OTG transmission interface comprises control module 31, voice codec 32, MP3 codec 33, USB OTG controller 34, storage medium 35, infrared ray A transmission interface 361 and a remote controller 362 . Wherein, the circuit design principle of voice codec 32, MP3 codec 33, USB OTG controller 34, storage medium 35, infrared transmission interface 361 and remote controller 362 and the purpose and effect that can be achieved have been described in above-mentioned comparison In the preferred embodiment, so no more details are given.

In this embodiment, the user can control the voice codec 32, the MP3 codec 33, the USB OTG controller 34 and the storage medium 35 of the voice playback device 30 to operate through two sets of control modules, except for the first and second In addition to the infrared transmission interface 361 and the remote controller 362 disclosed in the preferred embodiment, it also includes a key pad (key pad) 311, a display unit, a processor 313, a read-only memory (ROM) 314 and a random access memory (RAM). The control module 31 composed of 315 is set in the voice playback device 30, and the display unit is a small liquid crystal display 312, but it is not limited thereto.

The keypad 311 is electrically connected to the processor 313 and the liquid crystal display 312. When the user presses a key, the keypad 311 will output a corresponding message and send the information to the processor 313 and the liquid crystal display 312, so that Processor 313 controls speech codec 32, MP3 codec 33, USB OTG controller 34 and storage medium 35 to carry out corresponding operation according to the triggering of this information, as for, liquid crystal display 312 and processor 313 and keypad 311 , which displays the content of the message. The read-only memory 314 is electrically connected with the processor 313, and is mainly used to store system program instructions and data required for the operation of the voice playback device 30, and its stored content will not change under any circumstances, and the processor 313 can only Commands stored here can be read, and the stored data can be used, but cannot be changed or stored. The random access memory 315 is electrically connected to the processor 313 and is mainly used for temporarily storing instructions and data to be executed, and the processor 313 can read and write to the random access memory.

In the above-described embodiment, the speech codec 32, 22 can use the number AC97 Codec chip designed and manufactured by Yang Zhi Technology Co., Ltd., and the processor 312 can use the number AM1-2880 chip manufactured by Texas Instruments Industrial Co., Ltd. But not limited thereto, any chip with the same function can be incorporated for reference.

In summary, the voice playback device using the USB OTG transmission interface of the present utility model utilizes the controller of the USB OTG transmission interface to achieve data exchange or sharing directly with any USB external device without the need for a personal computer. Characteristics of independent work. In addition, through the MP3 codec, the voice signal can be transcribed into a voice file in MP3 format or the voice signal in MP3 format can be played. In addition, the voice codec can also receive all voice signals in non-MP3 format and transcribe them into audio and video files in non-MP3 format or play the voice signals in non-MP3 format. In addition to storing your own voice files, the storage medium can also temporarily store or backup voice files accessed by the USB OTG controller from an external USB device.

The utility model can be modified in various ways by those skilled in the art, without departing from the scope of protection as claimed in the claims.

Claims (12)

1. a voice playback device, which is connected with a universal serial bus device, is characterized in that, the voice playback device comprises: A storage medium for storing a voice file; An MP3 signal converter, electrically connected to the storage medium, converts the voice file into a digital voice signal in MP3 format for output; A USB OTG controller, electrically connected to the storage medium, which transmits the voice file to the USB device and/or reads the voice file stored in the USB device; and A control module is electrically connected to the storage medium, the MP3 signal converter and the USB OTG controller, and controls the storage medium, the MP3 signal converter and the USB OTG controller. 2. The voice playback device as claimed in claim 1, wherein the voice playback device also includes a voice signal converter electrically connected to the storage medium, the MP3 signal converter and the control module, and receives a non- voice signal in MP3 format, and convert the voice signal into a voice file in non-MP3 format, and/or convert the voice file in non-MP3 format stored in the storage medium into a digital voice signal for output. 3. The voice playback device according to claim 1 or 2, wherein the control module includes an infrared transmission interface and a remote controller, and the remote controller is connected with the infrared transmission interface signal in a wireless transmission mode, and controls the storage media, the MP3 signal converter and the USB OTG controller. 4. The voice playback device as claimed in claim 1 or 2, wherein the control module comprises a processor, a display unit, a keypad, a read-only memory and a random access memory, and the keypad and The processor is electrically connected, and it generates a message to make the processor control the MP3 signal converter and the USB OTG controller to perform corresponding operations according to the information, and the display unit is electrically connected to the processor and the keypad, so as to To display the information, the read-only memory is electrically connected to the processor to store the system program instructions and data required for the operation of the voice playback device, and the random access memory is electrically connected to the processor to store the temporary memory of the processor instructions and data, the display unit is a liquid crystal display. 5. The voice playback device as claimed in claim 1 or 2, wherein the control module comprises an infrared transmission interface, a remote controller, a processor, a display unit, a keypad, a read-only memory and a Random access memory, the remote controller is connected to the infrared transmission interface signal by wireless transmission to control the operation of the storage medium, the MP3 signal converter and the USB OTG controller, and the keypad is electrically connected to the processor to generate A piece of information, so that the processor controls the MP3 signal converter and the USB OTG controller to perform corresponding operations according to the information, the display unit is electrically connected with the processor and the keypad to display the information, and the read-only The memory is electrically connected with the processor to store the system program instructions and data required for the operation of the voice playing device, and the random access memory is electrically connected with the processor to store the instructions and data temporarily stored by the processor. 6. The audio playback device as claimed in claim 1, wherein the storage medium is a flash memory. 7. The voice playback device as claimed in claim 1, wherein the MP3 signal converter is an MP3 codec to convert the voice file of the MP3 format stored in the storage medium into a digital voice of the MP3 format signal output. 8. A voice playback device, which receives a voice signal and is connected with a universal serial bus device, and the voice playback device comprises: An MP3 signal converter; A voice signal converter, electrically connected to the MP3 signal converter, to receive the voice signal and convert the voice signal into a first voice file, and/or transmit the voice signal to the MP3 signal converter, so that the The voice signal is converted into a second voice file in MP3 format; A storage medium electrically connected to the MP3 signal converter and the voice signal converter to store the first voice file and the second voice file in MP3 format; A USB OTG controller, electrically connected to the storage medium, transmits the first and second audio files to the Universal Serial Bus device and/or reads the audio files stored in the Universal Serial Bus device; and A control module, electrically connected to the storage medium, the MP3 signal converter, the USB OTG controller and the voice signal converter, to control the storage medium, the MP3 signal converter, the USB OTG controller and the voice signal The converter works. 9. The voice playback device as claimed in claim 8, wherein the voice signal converter is a voice codec, which receives a voice signal in a non-MP3 format to convert the voice signal into a voice file, and /or convert the non-MP3 audio file stored in the storage medium into a digital audio signal for output. 10. The audio playback device according to claim 8, wherein the control module includes an infrared transmission interface and a remote controller, and the remote controller is connected to the infrared transmission interface signal in a wireless transmission mode to control the storage medium, The MP3 signal converter, the voice signal converter and the USB OTG controller operate. 11. The voice playback device as claimed in claim 8 or 10, wherein the control module comprises a processor, a display unit, a keypad, a read-only memory and a random access memory, and the keypad and The processor is electrically connected to generate information, so that the processor controls the MP3 signal converter, the voice signal converter and the USB OTG controller to perform corresponding operations according to the information, and the display unit is connected to the processor and the USB OTG controller. The keypad is electrically connected to display the information, the read-only memory is electrically connected to the processor to store system program instructions and data required for the operation of the voice playback device, the random access memory is electrically connected to the processor, To store instructions and data temporarily stored by the processor, the display unit is a liquid crystal display. 12. The audio playback device as claimed in claim 8, wherein the MP3 signal converter is an MP3 codec to convert the audio signal into a second audio file in the MP3 format and/or store the audio file in the MP3 format. The audio file in MP3 format stored in the media is converted into a digital audio signal in MP3 format for output.