Applicable to Konka TV remote control KK-Y378 Y378A LED43/39/55K35A
Bluetooth voice remote control concept home intelligent terminal development
The theme of this sharing is some basic principles and understanding of Bluetooth voice remote control, which will provide some references for developers of related products. The main contents are as follows:
Give personal opinions on how "Voice" arranges the position of keys and microphones on the remote control panel;
Brief introduction to BLE4.0;
Status and conversion of using Bluetooth voice remote controller;
At present, there is a set of standards to define Bluetooth key values;
Battery power reminder service;
Bluetooth remote control.jpg
Infrared and Bluetooth co-exist mode. When Bluetooth is abnormal, infrared can also be used.
Bluetooth voice remote control has gradually replaced the traditional infrared remote control, and has gradually become the standard equipment of home TV set-top box. The name "Bluetooth voice remote controller" mainly involves two aspects and several aspects. Bluetooth provides a channel and a set of transmission protocols for voice data transmission, and voice realizes the value of Bluetooth. In addition to voice, the buttons of the Bluetooth voice remote control are also transmitted to the TV set-top box through Bluetooth. This paper summarizes some basic principles of Bluetooth voice remote control.
1、 Position arrangement of "voice" button and microphone hole of Bluetooth voice remote control
One of the differences between the Bluetooth voice remote control on the button and the traditional infrared remote control is that the former has an additional difference between the "voice" button and the microphone hole. The user only needs to press and hold the "Voice" key to speak to the microphone, which will collect the user's voice, sample, quantize and encode it and then transmit it to the TV set-top box for analysis.
In order to get a better near-field voice experience, the layout of keys and microphones on the "voice" remote control is very exquisite. I have seen the voice remote control of some TV and OTT TV set-top boxes, and the positions of their "voice" keys are also varied. Some are placed in the middle of the remote control, some are placed at the top, some are placed at the top right corner, and the microphone is generally placed at the top. In general, the layout of remote control buttons is as follows:
In my opinion, the voice key is best placed in the middle area, and the microphone is best placed in the top area
Xiaomi Bluetooth remote control.jpg
Bluetooth language remote control concept home intelligent terminal development
The reason is as follows: when the user picks up the remote control, the lower part of the whole remote control is in the user's palm. At this time, the area close to the user's thumb is the middle area of the remote control, so you need to get its * * voice experience. "Voice" puts the key in the middle area * * * At this time, the user's thumb can press the "Voice" key at any time.
If the user wants to say something, the most natural way is to put the top area of the remote control into his mouth, so opening the microphone hole in the top area is the most reasonable.
2、 BLE4.0
The power consumption of the built-in Bluetooth voice remote controller is greater than that of the traditional infrared remote controller. Bluetooth voice remote controller usually selects the above standards as the technical implementation standards for extending battery life BLE4.