Network MP3 (Moving Picture Experts Group Audio Layer-3) power amplifier integrated machine
An all-in-one machine and network technology, applied in the field of reading and music playing devices, to achieve good operating experience, low cost, and simple structure
Inactive Publication Date: 2013-04-03
李亚奇
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Problems solved by technology
However, the addition and deletion of MP3 format files still need to be completed by a personal computer, which weakens the portability of the product
Moreover, the product does not have a visual operation screen, which will bring users a bad operating experience: 1. The user can only operate the file by feeling, and must wait for 5 to 10 seconds before the file is played before getting the feedback of the operation; 2. The number of files stored in the TF memory card is large, and the operation button module with simple functions is not enough to meet the needs of fast operation
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[0017] The SIM card reader interface uses two interfaces at the same time: 1. It can be connected to a standard SIM card with a size of 54mm×85mm; 2. It can be connected to a small SIM card with a size of 12mm×15mm, which is compatible with the mainstream SIMs currently on the market. Card. The single-chip microcomputer realizes the function of automatically connecting to the Internet to download songs and the response function of touch screen operation through C++ language programming. The LCD touch screen adopts a 4.3-inch basic touch LCD screen with the model number DMT48270T043_01W. The model used for the network chip is W5200, which is relatively cost-effective. It has sleep mode and network wake-up function, and supports high-speed SPI bus structure. Compared with ordinary network chips, it includes all four-layer structures of the TCP / IP protocol stack and network data processing. All in W5200, which reduces the load on the MCU and is easy to transplant. The MP3 file ...
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The invention discloses a network MP3 (Moving Picture Experts Group Audio Layer-3) power amplifier integrated machine. A power amplifier chip is fixedly connected with an MP3 file reading chip, an electric energy conversion chip, an analog-to-digital converter, a screen driving chip and an intelligent card interface; the MP3 file reading chip is respectively and fixedly connected with the intelligent card interface, a USB (Universal Serial Bus) controller, a network chip, a singlechip, the screen driving chip, the electric energy conversion chip and the analog-to-digital converter; the single chip is fixedly connected with a RAM (Random-Access Memory) chip and a ROM (Read Only Memory) chip; and the singlechip is respectively and fixedly connected with the USB controller and the network chip. The integrated machine not only has the function of being independently linked with the internet to download music, so that complex steps that a user operates a computer are avoided, but also provides a liquid crystal screen so as to realize the visible operation, so that the user can conveniently and rapidly operate local files and obtain the feedback; files of MP3 format can be automatically downloaded; and meanwhile good operation experience is provided for users, with simplicity in operation and convenience in carrying.
Description
technical field [0001] The invention relates to a device for reading MP3 format files and playing music, in particular to a network MP3 power amplifier integrated machine. Background technique [0002] At present, the structure of the known MP3 power amplifier all-in-one machine is composed of a power amplifier speaker, an MP3 file reading chip, a USB interface, a TF memory card reading chip, a battery and an operation button module. The MP3 file reading chip can be activated by operating the operation button module to read the MP3 format files pre-stored in the TF memory card, or the USB interface can be used to directly output audio signals as a simple power amplifier device. However, the addition and deletion of MP3 format files still need to be completed by a personal computer, which weakens the portability of the product. Moreover, the product does not have a visual operation screen, which will bring users a bad operating experience: 1. Users can only operate files by...
Claims
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IPC IPC(8): G11C7/16H04R27/00
Inventor 李亚奇
Owner 李亚奇