Information transmission method, information reception method and apparatus

An information receiving method, comprising:

• receiving optical signals containing authentication information from a transmitting device, wherein the transmitting device has:
• converted the authentication information into a binary sequence;
• segmented the binary sequence into a sequence of equal-length n-bit binary segments, each n-bit binary segment having a value corresponding to a binary representation thereof, where n is greater than or equal to 2;
• determined a first predetermined time duration and a second predetermined time duration for each n-bit binary segment value, wherein a first predetermined time duration is selected when an n-bit binary segment value is transmitted as a bright optical signal, and a second predetermined time duration is selected for a same n-bit binary segment value when transmitted as a dark optical signal, wherein the first predetermined time duration corresponding to each n-bit binary segment value is selected from a set having a minimum time duration L, and the second predetermined time duration corresponding to each n-bit binary segment value is selected from a set having the minimum time duration M;
• wherein M is greater than L and a first predetermined time duration and a second predetermined time duration for each successive n-bit binary segment value are greater than a first predetermined time duration and second predetermined time duration, of an immediately previous n-bit binary segment value;
• generated bright optical signals and dark optical signals for the sequence of equal-length n-bit binary segments, wherein a total number of the bright optical signals is greater than or equal to a total number of the dark optical signals;
• and transmitted the binary sequence using the bright optical signals and dark optical signals generated, and the bright optical signals and dark optical signals are transmitted in an alternate manner;
• decoding the received optical signals into a sequence of n-bit binary segment values based on a correspondence between a binary number and an optical signal of predetermined time duration;
• converting the sequence of n-bit binary segment values into the authentication information;
• and
• performing an information authentication based on the authentication information.

A communications system, comprising:

• one or more processors configured to execute program instructions stored in a non-transitory computer-readable storage medium and cause one or more processors of a transmitting device to:
• obtain authentication information;
• convert the authentication information into a binary sequence;
• segment the binary sequence into a sequence of equal-length n-bit binary segments, each n-bit binary segment having a value corresponding to a binary representation thereof, where n is greater than or equal to 2;
• determine a first predetermined time duration and a second predetermined time duration for each n-bit binary segment value, wherein a first predetermined time duration is selected when the an n-bit binary segment value is transmitted as a bright optical signal, and a second predetermined time duration is selected for a same n-bit binary segment value when transmitted as a dark optical signal, wherein the first predetermined time duration corresponding to each n-bit binary segment value is selected from a set having a minimum time duration L, and the second predetermined time duration corresponding to each n-bit binary segment value is selected from a set having the minimum time duration M;
• wherein M is greater than L and a first predetermined time duration and a second predetermined time duration for each successive n-bit binary segment value are greater than a first predetermined time duration and second predetermined time duration, of an immediately previous n-bit binary segment value;
• control a flashlight light source to generate bright optical signals and dark optical signals for the sequence of n-bit binary segments, wherein a total number of the bright optical signals is greater than or equal to a total number of the dark optical signals;
• and
• transmit the sequence using the bright optical signals and dark optical signals, wherein the bright optical signals and dark optical signals are transmitted in an alternate manner.

A communications system, comprising:

• one or more processors configured to execute program instructions stored in a non-transitory computer-readable storage medium and cause one or more processors of a transmitting receiving device to:
• receive optical signals from a transmitting device, wherein, the transmitting device has:
• converted authentication information into a binary sequence;
• segmented the binary sequence into a sequence of equal-length n-bit binary segments, each n-bit binary segment having a value corresponding to a binary representation thereof, where n is greater than or equal to 2;
• determined a first predetermined time duration and a second predetermined time duration for each n-bit binary segment value, wherein a first predetermined time duration is selected when the an n-bit binary segment value is transmitted as a bright optical signal, and a second predetermined time duration is selected for a same n-bit binary segment value when transmitted as a dark optical signal, wherein the first predetermined time duration corresponding to each n-bit binary segment value is selected from a set having a minimum time duration L, and the second predetermined time duration corresponding to each n-bit binary segment value is selected from a set having the minimum time duration M;
• wherein M is greater than L and a first predetermined time duration and a second predetermined time duration for each successive n-bit binary segment value are greater than a first predetermined time duration and second predetermined time duration, of an immediately previous n-bit binary segment value;
• generated bright optical signals and dark optical signals for the sequence of equal-length n-bit binary segments, wherein a total number of the bright optical signals is greater than or equal to a total number of the dark optical signals;
• and
• transmitted the binary sequence using the bright optical signals and dark optical signals generated, wherein the bright optical signals and dark optical signals are transmitted in an alternate manner;
• decode the received optical signals into a binary sequence based on a correspondence between a n-bit binary number and an optical signal duration;
• convert the binary sequence into the authentication information;
• and
• perform an information authentication based on the authentication information.