Bluetooth device, Bluetooth communication system and method for transmitting instructions between devices

Abstract

The invention relates to the technical field of Bluetooth communication, and specifically discloses a Bluetooth device, a Bluetooth communication system and a method for transmitting instructions between devices. The method for transmitting the instructions between the devices comprises the following steps: S100, a Bluetooth master receiving device sends a standard data packet to a source data device; S200, the Bluetooth master receiving device sends an instruction data packet in idle time of the same time slot; S300, the source data device receives the standard data packet and the instructiondata packet, and discards the instruction data packet through filtering detection; a Bluetooth secondary receiving device also receives the instruction data packet; S400, the source data device sendsthe standard data packet at the next time slot; S500, the Bluetooth master receiving device and the Bluetooth secondary receiving device simultaneously receive the standard data packet sent by the source data device. With the Bluetooth device, the Bluetooth system and the method for transmitting the instructions between the devices provided by the invention, when the Bluetooth secondary receivingdevice is in a monitoring mode, instruction transmission between the Bluetooth master receiving device and the Bluetooth secondary receiving device can be realized.

Description

technical field [0001] The invention relates to the technical field of bluetooth communication, in particular to a bluetooth device, a bluetooth communication system and a method for transmitting instructions between devices. Background technique [0002] Bluetooth is a wireless technology standard that can realize short-distance data exchange between fixed devices, mobile devices and building personal area networks. A Bluetooth link includes a Bluetooth master device (Master) and a Bluetooth slave device (Slave). Bluetooth The network is provided by the bluetooth master device and uses a frequency of 1600 hops per second for frequency hopping communication. The definition of the Bluetooth specification includes the concept of a time slot (Slot). A time slot is 1 / 1600 seconds, which is 625us. The time slots of Bluetooth include master-to-slave time slots (Master-to-Slave time slots) that appear alternately in sequence. And from-master time slot (Slave-to-Master time slot), ...

AI Technical Summary

Problems solved by technology

Although this method solves the problem of the Bluetooth main receiving device forwarding source data, usually some short data interaction content needs to be transmitted between the Bluetooth main receiving device and the Bluetooth secondary receiving device. This type of short data content is usually command data, such as volume Setting commands, power on and off commands, power state detection commands, etc. In this scheme, because the frequency hopping sequence of the Bluetooth secondary receiving device is completely synchronized with the Bluetooth clock, etc., and the Bluetooth primary receiving device and data source device, the Bluetooth primary receiving device and the Bluetooth secondary receiving device There is no independent clock and frequency modulation sequence between devices, so independent data and instruction transmission cannot be performed between the two

This limits the development of this monitoring mode, and it is precisely because of this that most Bluetooth headsets on the market use the aforementioned scheme where the Bluetooth master receiving device forwards data through custom Bluetooth or other protocols to solve the problem in this monitoring mode. The problem of command transmission is of great significance to the promotion and application of the scheme

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