Method for unlocking door, method for renting asset and system thereof

• US 9,466,160 B2
• Filed: 08/12/2014
• Issued: 10/11/2016
• Est. Priority Date: 09/18/2013
• Status: Active Grant

• Current Assignee: Generalplus Technology Inc.
• Original Assignee: Generalplus Technology Inc.
• Inventors: Lee, Kung-Wang, Hsu, Chia-Sheng, Liu, Cheng-Chiang, Yang, Chih Hsiang
• Primary Examiner(s): Mehmood, Jennifer
• Assistant Examiner(s): Casillashernandez, Omar
• Application Number:
  US14/457,923
• Publication Number:
  US 20150078137A1
• Time in Patent Office: 791 Days
• Field of Search: 367/198, 381/110
• US Class Current: 1/1
• CPC Class Codes: G06Q 10/02 Reservations, e.g. for tickets, services or events
• CPC Class Codes: G07C 9/21 having a variable access code
• CPC Class Codes: G07C 9/215 the system having a variable access-code, e.g. varied as a function of time
• CPC Class Codes: G07C 9/25 using biometric data, e.g. fingerprints, iris scans or voice recognition
• CPC Class Codes: G07C 9/27 with central registration
• CPC Class Codes: G08C 23/02 using infrasonic, sonic or ultrasonic waves

Abstract

A method for unlocking a door, a method for renting asset and a system thereof are provided in the present invention. The door includes an audio receiver, and the method includes the steps of: storing a unlock sequence into a mobile device; performing a audio modulation to generates a audio modulation voiceprint signal, wherein the frequency range of the audio modulation voiceprint signal is in the audio frequency; playing the audio modulation voiceprint signal by using the speaker of the mobile device; when the audio receiver receives the audio modulation voiceprint signal, the method further includes: performing a audio demodulation to obtain the unlock sequence; and determining whether the door is unlock or not according to the unlock sequence.

Claims

1. A method for unlocking a door, wherein the door comprises an audio receiver, wherein the method comprises:

providing an unlock sequence stored in a mobile device, wherein an application software is installed in the mobile device;

performing an audio signal modulation to the unlock sequence to generate a modulated audio signal by the application software when user tries to open the door and performing the application software through the mobile device, wherein a frequency range of the modulated audio signal is in an audio frequency;

playing the modulated audio signal through a speaker of the mobile device;

wherein, when the audio receiver receives the modulated audio signal, the method further comprises;

performing an audio signal demodulation to obtain the unlock sequence; and

determining whether the door is unlocked or not according to a result of whether the unlock sequence conforms a preset unlock requirement;

wherein, in order to prevent skimming of the modulated audio signal by an audio recorder of an interested person, the unlock sequence comprises an unlock field and a synchronization sequence field, and the audio modulation comprises;

performing a digital encoding to the unlock sequence to obtain a digital code, wherein the digital encoding adopts a rolling code; and

modulating the digital code with an audio carrier signal to obtain the modulated audio signal;

wherein performing the digital encoding to the unlock sequence to obtain a digital code comprises;

setting a door number sequence and a synchronization counting sequence in the unlock sequence, wherein the synchronization counting sequence includes a synchronization counting value;

encoding the unlock sequence to obtain an encryption sequence, wherein the encryption sequence includes a fixed code sequence and a rolling code sequence, wherein the rolling code sequence is changed according to the synchronization counting value; and

adding a preset value to the synchronization counting value in the synchronization signal counting sequence of the unlocking code whenever the modulated audio signal is emitted;

wherein performing the audio signal demodulation to obtain the unlock sequence comprises;

demodulating the modulated audio signal with the audio carrier signal to obtain the encryption sequence;

performing a decryption procedure to the rolling code sequence of the encryption sequence to obtain the door number sequence and the synchronization counting sequence;

determining whether the difference between the synchronization counting value of synchronization counting sequence and a door counting value falls within a preset range;

determining whether the door number sequence and the fixed code sequence conforms a door unlock requirement when the difference between the synchronization counting value of synchronization counting sequence and the door counting value falls within a preset range; and

unlocking the door and adding the preset value to the door counting value to serve as the door counting value when the door number sequence and the fixed code sequence conforms the door unlock requirement.

2. The method according to claim 1, wherein the audio signal modulation is an audio spread spectrum modulation to spread an energy of the modulated audio signal over a band of the audio frequency such that skimming of the modulated audio signal by an audio recorder of an interested person can be prevented.

3. The method according to claim 1, wherein a frequency of the audio carrier signal is within a range of 12 KHz to 20 KHz such that the modulated voiceprint audio signal falls within the range of 12 KHz to 20 KHz.

4. The method according to claim 1, wherein the method is adapted for a reservation system of a hotel, and the method further comprises:

performing an internet reservation through an application software of the mobile device;

obtaining the unlock sequence and a door number corresponding to the unlock sequence when a user finishes a reservation procedure by utilizing the application software of the mobile device;

wherein, when the user performs door unlocking procedure through the application software, the method further comprises;

performing the audio modulation to the unlock sequence to generate the modulated audio signal; and

playing the modulated audio signal through the speaker of the mobile device.

5. A method for renting an asset, wherein the asset comprises an audio receiver, wherein the method comprises:

performing an internet renting asset procedure through an application software of a mobile device;

obtaining an unlock sequence and an asset number when a user finishes the internet renting asset procedure by utilizing the application software of the mobile device, wherein the application software is installed in mobile device, and the unlock sequence is stored in the mobile device;

wherein, when the user tries to open the asset and performs an unlocking procedure for the asset through the application software in the mobile device, the method further comprises;

performing an audio modulation to the unlock sequence to generate a modulated audio signal; and

playing the modulated audio signal through a speaker of the mobile device;

wherein, when the audio receiver receives the modulated audio signal, the method further comprises;

performing an audio demodulation to obtain the unlock sequence; and

determining whether the asset is unlocked or not according to the result of whether the unlock sequence conforms a preset unlock requirement;

wherein, in order to prevent skimming of the modulated audio signal by an audio recorder of an interested person, the unlock sequence comprises an unlock field and a synchronization sequence field, and the audio modulation comprises;

performing a digital encoding to the unlock sequence to obtain a digital code, wherein the digital encoding adopts a rolling code; and

modulating the digital code with an audio carrier signal to obtain the modulated audio signal;

wherein performing a digital encoding to the unlock sequence to obtain a digital code comprises;

setting an asset number sequence and a synchronization counting sequence in the unlock sequence, wherein the synchronization counting sequence includes a synchronization counting value;

encoding the unlock sequence to obtain an encryption sequence, wherein the encryption sequence includes a fixed code sequence and a rolling code sequence, wherein the rolling code sequence is changed according to the synchronization counting value; and

adding a preset value to the synchronization counting value in the synchronization counting sequence of the unlocking code whenever the modulated audio signal emits;

wherein performing an audio signal demodulation to obtain the unlock sequence comprises;

demodulating the modulated audio signal with the audio carrier signal to obtain the encryption sequence;

performing a decryption procedure to the rolling code sequence of the encryption sequence to obtain the asset number sequence and the synchronization counting sequence;

determining whether the difference between the synchronization counting value of synchronization counting sequence and an asset counting value falls within a preset range;

determining whether the asset number sequence and the fixed code sequence conforms a door unlock requirement when the difference between the synchronization counting value of synchronization counting sequence and the asset counting value falls within a preset range; and

unlocking the asset and adding the preset value to the asset counting value to serve as the asset counting value when the asset number sequence and the fixed code sequence conforms the door unlock requirement.

6. The method according to claim 5, wherein the audio signal modulation is an audio spread spectrum modulation to spread an energy of the modulated audio signal over a band of the audio frequency such that skimming of the modulated audio signal by an audio recorder of an interested person can be prevented.

7. The method according to claim 5, wherein a frequency of the audio carrier signal is within a range of 12 KHz to 20 KHz such that the modulated voiceprint audio signal falls within the range of 12 KHz to 20 KHz.

8. A system for renting an asset, comprising:

a plurality of assets, wherein each asset respectively comprises a number, and each asset respectively comprises;

an audio receiver; and

an audio demodulator, coupled to the audio receiver, for performing an audio demodulation to a received audio signal of the audio receiver;

a rent server, having an asset connection port, wherein the rent server connects to an internet, wherein, when a user connects to the internet and performs an internet renting asset procedure through an application software of a mobile device, the rent server transmits an unlock sequence and an asset number corresponding to the unlock sequence to the mobile device, wherein the rent server transmits the unlock sequence to an asset corresponding to the asset number through the asset connection port;

wherein, the application software is installed in mobile device, and the unlock sequence is stored in the mobile device,

wherein, when the user tries to open the asset and performs an asset unlocking procedure through the application software in the mobile device, the procedure comprises;

performing an audio modulation to the unlock sequence to generate a modulated audio signal; and

playing the modulated audio signal through a speaker of the mobile device;

wherein, when the audio receiver receives the modulated audio signal, the audio demodulator performs the audio demodulation to obtain the unlock sequence,

wherein the audio demodulator determines whether the asset is unlocked or not according to the result of whether the unlock sequence conforms a preset unlock requirement;

wherein, in order to prevent skimming of the modulated audio signal by an audio recorder of an interested person, the unlock sequence comprises an unlock field and a synchronization sequence field, and the audio modulation of the mobile device comprises;

performing a digital encoding to the unlock sequence to obtain a digital code, wherein the digital encoding adopts a rolling code; and

modulating the digital code with an audio carrier signal to obtain the modulated audio signal;

wherein performing a digital encoding to the unlock sequence to obtain a digital code comprises;

setting an asset number sequence and a synchronization counting sequence in the unlock sequence, wherein the synchronization counting sequence includes a synchronization counting value;

encoding the unlock sequence to obtain an encryption sequence, wherein the encryption sequence includes a fixed code sequence and a rolling code sequence, wherein the rolling code sequence is changed according to the synchronization counting value; and

adding a preset value to the synchronization counting value in the synchronization counting sequence of the unlocking code whenever the modulated audio signal emits;

wherein performing an audio signal demodulation to obtain the unlock sequence comprises;

demodulating the modulated audio signal with the audio carrier signal to obtain the encryption sequence;

performing a decryption procedure to the rolling code sequence of the encryption sequence to obtain the asset number sequence and the synchronization counting sequence;

determining whether the difference between the synchronization counting value of synchronization counting sequence and an asset counting value falls within a preset range;

determining whether the asset number sequence and the fixed code sequence conforms a door unlock requirement when the difference between the synchronization counting value of synchronization counting sequence and the asset counting value falls within a preset range; and

unlocking the asset and adding the preset value to the asset counting value to serve as the asset counting value when the asset number sequence and the fixed code sequence conforms the door unlock requirement.

9. The system according to claim 8, wherein the audio signal modulation is an audio spread spectrum modulation to spread an energy of the modulated audio signal over a band of the audio frequency such that skimming of the modulated audio signal by an audio recorder of an interested person can be prevented.

10. The method according to claim 8, wherein a frequency of the audio carrier signal is within a range of 12 KHz to 20 KHz such that the modulated voiceprint audio signal falls within the range of 12 KHz to 20 KHz.