Method and apparatus of transmitting signal

Patent metadata

Field	Value
Publication number	US-10142141-B2
Application number	US-201715717931-A
Country	US
Kind code	B2
Filing date	Sep 27, 2017
Priority date	Aug 5, 2016
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

The present disclosure discloses a method of transmitting a signal, a wearable communication device and a terminal device. The method includes: receiving, by a wearable communication device, a modulated wave signal transmitted by a terminal device; demodulating the modulated wave signal to obtain a to-be-decoded signal; performing a waveform shaping process on the to-be-decoded signal to obtain a square wave signal, where a high level in the square wave signal is configured to represent a first preset value, and a time interval is existed between two high levels corresponding to any two adjacent first preset values; acquiring time interval eigenvalues in the square wave signal; acquiring a one-to-one mapping relation of the interval eigenvalues and a plurality of coding sequences; and performing, according to the time interval eigenvalues and the mapping relation, a first decoding process and a second decoding process on the square wave signal to obtain original data.

First claim

What is claimed is:

1. A method of transmitting a signal, comprising:
receiving, by a wearable communication device, a modulated wave signal transmitted by a terminal device, wherein the modulated wave signal is obtained by modulating original data by the terminal device;
demodulating the modulated wave signal to obtain a to-be-decoded signal;
performing a waveform shaping process on the to-be-decoded signal to obtain a square wave signal, wherein a high level in the square wave signal is configured to represent a first preset value, and a time interval is existed between two high levels in the square wave signal corresponding to any two adjacent first preset values;
acquiring a plurality of time interval eigenvalues in the square wave signal;
acquiring a first mapping relation, wherein the first mapping relation is configured to indicate a one-to-one mapping relation of the plurality of time interval eigenvalues and a plurality of coding sequences;
performing, according to the plurality of time interval eigenvalues and the first mapping relation, a first decoding process on the square wave signal to obtain an original coding sequence, wherein the original coding sequence is obtained by encoding the original data by the terminal device; and
performing a second decoding process on the original coding sequence to obtain the original data.

2. The method according to claim 1 , wherein acquiring the plurality of time interval eigenvalues in the square wave signal, comprises:
setting a packet header signal to the modulated wave signal;
acquiring a period of the packet header signal, a pulse width of the modulated wave signal, and an edge deviation between a rising edge or a falling edge of each square wave in the square wave signal and a pulse starting point of the modulated wave signal when a threshold outputted from a comparator is greater than zero according to the packet header signal, wherein the comparator is configured to perform the waveform shaping process on the modulated wave signal; and
acquiring the plurality of time interval eigenvalues according to the period of the packet header signal, the pulse width and the edge deviation.

3. The method according to claim 1 , wherein the plurality of time interval eigenvalues comprises: a first eigenvalue, a second eigenvalue and a third eigenvalue, the plurality of coding sequences comprise a first Manchester sequence, a second Manchester sequence and a third Manchester sequence, wherein each coding sequence comprises a second preset value and the first preset value, the square wave signal is configured to represent the first preset value and the second preset value,
the first mapping relation comprises:
the first eigenvalue corresponding to the first Manchester sequence, wherein a value of a first bit of the first Manchester sequence is the first preset value and a value of a second bit of the first Manchester sequence is the second preset value;
the second eigenvalue corresponding to the second Manchester sequence, wherein a value of a first bit of the second Manchester sequence is the first preset value, a value of a second bit of the second Manchester sequence is the second preset value, and a value of a third bit of the second Manchester sequence is the second preset value;
the third eigenvalue corresponding to the third Manchester sequence, wherein a value of a first bit of the third Manchester sequence is the first preset value and a value of a second bit of the third Manchester sequence is the second preset value; and
wherein the time interval eigenvalue is configured to characterize the time interval between any two adjacent high levels, the first bit is a bit corresponding to a first high level in the two adjacent high levels corresponding to the time interval eigenvalue, the second bit is the next bit after the first bit, and the third bit is the next bit after the second bit.

4. The method according to claim 3 , wherein the original coding sequence is an original Manchester sequence obtained by performing a Manchester coding on the original data, and
wherein performing, according to the plurality of time interval eigenvalues and the first mapping relation, the first decoding process on the square wave signal to obtain the original coding sequence, comprises:
decoding, according to the plurality of time interval eigenvalues and the first mapping relation, the square wave signal to obtain a decoding result, wherein the decoding result comprises at least one first Manchester sequence, at least one second Manchester sequence and at least one third Manchester sequence; and
performing, according to bits comprised in the decoding result, a recovering process on the decoding result to obtain the original Manchester sequence.

5. The method according to claim 4 , wherein the decoding result is a Manchester sequence comprising S bits, S is a natural number greater than or equal to 2, and
wherein performing, according to the bits comprised in the decoding result, the recovering process on the decoding result to obtain the original Manchester sequence, comprises:
if mod (S, 2)=0, determining values of the last two bits of the original data according to a waveform in the square wave signal corresponding to the last two bits of the original Manchester sequence; or
if mod (S, 2)=1, determining values of the last two bits of the original data according to a waveform in the square wave signal corresponding to the second last bit of the original Manchester sequence; and
determining the original Manchester sequence according to the decoding result and the values of the last two bits of the original Manchester sequence.

6. The method according to claim 1 , wherein receiving, by the wearable communication device, the modulated wave signal transmitted by the terminal device, comprises:
receiving, by the wearable communication device, the modulated wave signal transmitted by the terminal device through a first channel line;
wherein demodulating the received modulated wave signal to obtain the to-be-decoded signal, comprises:
receiving a carrier signal transmitted by the terminal device through a second channel line, wherein the carrier signal is configured to modulate the original coding sequence to obtain the modulated wave signal; and
demodulating, based on the carrier signal, the modulated wave signal to obtain the to-be-decoded signal.

7. The method according to claim 6 , wherein the carrier signal is obtained by performing an amplitude modulation on a sine wave of a first frequency and a sine wave of a second frequency, and a frequency difference between the first frequency and the second frequency is greater than or equal to 20 kHz.

8. The method according to claim 1 , wherein the wearable communication device is a wired earphone.

9. A wearable communication device, comprising:
a receiving module, configured to receive a modulated wave signal transmitted by a terminal device, wherein the modulated wave signal is obtained by modulating original data by the terminal device;
a demodulating module, configured to demodulate the modulated wave signal to obtain a to-be-decoded signal;
a shaping module, configured to perform a waveform shaping process on the to-be-decoded signal to obtain a square wave signal, wherein a high level in the square wave signal is configured to represent a first preset value, and a time interval is existed between high levels in the square wave signal corresponding to any two adjacent first preset values;
an acquisition module, configured to acquire a plurality of time interval eigenvalues in the square wave signal;
the acquiring module further configured to acquire a first mapping relation, wherein the first mapping relation is configured to

Assignees

• Shenzhen Goodix Tech Co Ltd

Inventors

• Xia Rongjun
• Zhuo Guangming

Classifications

• H03M5/12 Primary

  Biphase level code, e.g. split phase code, Manchester code; Biphase space or mark code, e.g. double frequency code · CPC title

• H03K5/156

  Arrangements in which a continuous pulse train is transformed into a train having a desired pattern · CPC title

• H04R1/1091

  Details not provided for in groups H04R1/1008 - H04R1/1083 · CPC title

• H04R5/04

  Circuit arrangements, {e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments (combinations of amplifiers H03F3/68; stereophonic systems H04S)} · CPC title

• H04R5/033

  Headphones for stereophonic communication {(details thereof, e.g. relating to batteries, cables or control elements H04R1/10)} · CPC title