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US 11,641,625 B2Granted
Information transmission method for ultrasonic transmitter, information transmission device for ultrasonic transmitter, and storage medium
AssigneeBeijing Xiaomi Mobile Software Co., Ltd.
InventorsRunyu Shi, Xueyang Lv, Wei Lu, Kai Wang
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Abstract
An information transmission method, an information transmission apparatus, and a storage medium include encoding information to be transmitted to obtain an ultrasonic encoded signal; obtaining an ultrasonic transmission signal based on the ultrasonic encoded signal and an ultrasonic wake-up signal, the ultrasonic wake-up signal for waking up an ultrasonic receiver to decode the ultrasonic encoded signal; and transmitting the ultrasonic transmission signal to the ultrasonic receiver.
Claims18
An information transmission method for an ultrasonic transmitter, comprising:
- encoding information to be transmitted to obtain an ultrasonic encoded signal;
- obtaining an ultrasonic transmission signal based on the ultrasonic encoded signal and an ultrasonic wake-up signal, the ultrasonic wake-up signal for waking up an ultrasonic receiver to decode the ultrasonic encoded signal;
- and
- transmitting the ultrasonic transmission signal to the ultrasonic receiver,.
- wherein,
- the information to be transmitted comprises a plurality of characters arranged in sequence;
- encoding the information to be transmitted to obtain the ultrasonic encoded signal comprises:
- sequentially converting the plurality of characters into a plurality of frequency values based on a correspondence between characters and frequency values;
- obtaining a plurality of encoded sub-signals corresponding to the plurality of characters based on the plurality of frequency values;
- and
- sequentially encoding the plurality of encoded sub-signals corresponding to the plurality of characters to form the ultrasonic encoded signal.
8 more elements
An information transmission method for an ultrasonic receiver, comprising:
- receiving an ultrasonic transmission signal from an ultrasonic transmitter;
- determining whether an ultrasonic wake-up signal exists in the ultrasonic transmission signal;
- and
- when the ultrasonic wake-up signal exists in the ultrasonic transmission signal, decoding an ultrasonic encoded signal in the ultrasonic transmission signal to obtain transmission information corresponding to the ultrasonic encoded signal,
- wherein,
- determining whether the ultrasonic wake-up signal exists in the ultrasonic transmission signal comprises:
- converting the ultrasonic transmission signal into a wake-up digital signal through a first sampling rate;
- and determining whether the ultrasonic wake-up signal exists in the wake-up digital signal to determine whether the ultrasonic wake-up signal exists in the ultrasonic transmission signal;
- and
- decoding the ultrasonic encoded signal in the ultrasonic transmission signal to obtain the transmission information corresponding to the ultrasonic encoded signal comprises:
- converting the ultrasonic transmission signal into a transmission digital signal through a second sampling rate;
- and decoding the transmission digital signal to obtain the transmission information;
- in which, the second sampling rate is higher than the first sampling rate.
10 more elements
An information transmission device, comprising:
- a processor;
- and
- a memory for storing instructions executable by the processor;
- wherein the processor is configured to:
- encode information to be transmitted to obtain an ultrasonic encoded signal;
- obtain an ultrasonic transmission signal based on the ultrasonic encoded signal and an ultrasonic wake-up signal, the ultrasonic wake-up signal for waking up an ultrasonic receiver to decode the ultrasonic encoded signal;
- and
- transmit the ultrasonic transmission signal to the ultrasonic receiver,
- wherein,
- the information to be transmitted comprises a plurality of characters arranged in sequence;
- the processor is configured to:
- sequentially convert the plurality of characters into a plurality of frequency values based on a correspondence between characters and frequency values;
- obtain a plurality of encoded sub-signals corresponding to the plurality of characters based on the plurality of frequency values;
- and
- sequentially encode the plurality of encoded sub-signals corresponding to the plurality of characters to form the ultrasonic encoded signal.
12 more elements
Dependencies are inferred from the claim text.