This article gives you a talk about SCO wireless charging and launching program, as well as the corresponding knowledge points of wireless charging and launching devices, I hope to be helpful to you, don't forget to collect this site. < / p > < h2 > the article directory list: < / h2 > < ul > < li style = 'margin - bottom: 3 px; list-style: none'>1. What is Bluetooth? Specific point
Bluetooth technology is an open global specification for wireless data and voice communication, it is based on low-cost near field wireless connection, a special near field wireless technology connection for fixed and mobile devices to establish a communication environment. Bluetooth enables some of today's portable mobile devices and computer devices to connect to the Internet without the need for a cable and to access the Internet wirelessly.
Bluetooth is oneA low-cost near field wireless connection, a near field wireless technology connection that establishes a communication environment for fixed and mobile devices.
Bluetooth, or blue bud, is a new wireless transmission protocol. Function: Bluetooth is used for wireless connection between different devices, such as connecting computers and peripherals such as printers, keyboards, etc., or allowing personal digital assistants (PDAs) to communicate with other nearby PDAs or computers. Expansion: Bluetooth technology was originally developed by Ericsson.
Bluetooth for mobile phones is a device that supports short-range communication (generallyEngaged in the professional field of Internet information technology technology technology development, technical consulting, technical services, technology transfer, design, production of various types of advertising, the use of its own media to publish various types of advertising, computer hardware and software development, communication system automation software and hardware development, communication network engineering, communication system equipment sales, installation, commissioning, maintenance, etc.
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Bluetooth technology is an open global specification for wireless data and voice communication, it is based on low-cost short-range wireless connection, a special short-range wireless technology connection for fixed and mobile devices to establish a communication environment. Bluetooth enables some of today's portable mobile devices and computer devices to connect to the Internet without the need for a cable and to access the Internet wirelessly.
Bluetooth technology, in fact, is a short-range wireless communication technology, the use of "Bluetooth" technology, can effectively simplify the communication between mobile communication terminal devices such as handheld computers, laptops and mobile phones, and can also successfully simplify the communication between these devices and the Internet. This makes data transmission between these modern communication devices and the Internet faster and more efficient, broadening the way for wireless communication.
Bluetooth is a radio technology that supports short-range communication of devices (generally within 10m), including mobile phones and PDAsWireless information exchange between many devices, such as wireless headphones, laptops, and related peripherals.
It is an open specification for wireless transmission of voice and data, and it is a low-cost, short-distance wireless connection technology. Its wireless transceiver is a small chip, about 9mm x 9mm, which can be easily embedded in portable devices, thereby increasing the communication selectivity of the device. Bluetooth technology realizes the connectionless work of the device, provides the function of accessing the data network, and has the peripheral device interface, which can form a specific small network.
Bluetooth (Bluetooth), or Blue Bud, is a new wireless transport protocol, originally developed by Ericsson and later standardized by the Bluetooth Special Interest Group.
From the popular name of WLAN we can easily associate it as an alternative technology to Bluetooth, from a technical point of view, these two wireless communication transmission technologies use the same IEEE 8011 standard, and use the same carrier band.
IEEE8011: Wireless Personal Area Network, WPAN. The standard defines a physical layer (PHY) that corresponds to the physical layer of Bluetooth, and a media access layer (MAC) that includes the corresponding portion of the Bluetooth protocol stack. Networking mode: There are two networking modes. Piconet is composed of one Master device and one to seven Slave devices.
WPAN technology enables users to create personal-operating-space (POS) devices such as PDAs, mobile phones, and laptopsTime wireless communication. POS refers to a space range centered on an individual with a maximum distance of 10 meters. Currently, the two main WPAN technologies are "Bluetooth" and infrared. Bluetooth is a cable-replacement technology that uses radio waves to transmit data up to 30 feet away.
Wireless Personal Network (WPAN) is a wireless network formed by connecting several devices to each other in a small area, usually within reach of an individual. For example, Bluetooth-connected headphones and laptops, ZigBee also provides wireless personal network applicationsStage. Bluetooth is an open, short-range wireless communication technology standard.
1, Bluetooth and infrared remote control are common wireless remote control methods, but their connection and application scenarios are different. The following details the difference between Bluetooth and infrared remote control. No direction, no orientation connection Bluetooth is generally no direction, no orientation connection, suitable for "point opposite" or "point facing" connection; For example, no matter which (Bluetooth) master or controller is in a moving, moving state, as long as it is controllableRemote control can be achieved within the distance.
2, the difference in the sense of infrared is the abbreviation of infrared, is a kind of electromagnetic wave. It can realize wireless transmission of data. Infrared transmission is point-to-point transmission. Bluetooth is a global open specification for wireless data and voice communications. It is a special short-range wireless connection technology that establishes a communication environment for fixed and mobile devices on the basis of low-cost short-range wireless connection.
3, infrared: fast Bluetooth: slow 4. Secure Infrared: undifferentiated Bluetooth: encrypted 5. Cost infrared: a few yuan -- dozens of yuan Bluetooth: 400-800 yuanSimply put, infrared must be mouth to mouth, and Bluetooth can accept a wall I recommend Bluetooth, Bluetooth within 100 meters can transmit music pictures, and infrared must be two mobile phones in a piece and mouth to mouth, more trouble.
4, infrared and Bluetooth difference 1. Distance infrared: alignment, direct, 1-2 meters, single to single Bluetooth: about 10 meters, can strengthen the signal, can be bent, can not be aligned, can not be in the same room, the maximum number of links up to 7, while distinguishing hardware.
5,. Distance infrared: aligned, direct, 1-2 meters, single pairSingle Bluetooth: about 10 meters, can strengthen the signal, can be bent, can not be aligned, can not be in the same room, the maximum number of links up to 7, while distinguishing the hardware.
6, the difference between infrared, Bluetooth, ZigBee, wifi: infrared: is a point-to-point transmission mode, wireless, can not be too far away, to align the direction, and there can be no obstacles in the middle, that is, can not pass through the wall, almost can not control the progress of information transmission. Bluetooth: It is also used for short-range data transmission, which can be 360 degrees short distance (about a few meters from the effective distance) compared with the infrared transmission direction.
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