ELECTRONIC DEVICE AND COPYRIGHT PROTECTION METHOD OF AUDIO DATA THEREOF

• US 20110088098A1
• Filed: 09/24/2010
• Published: 04/14/2011
• Est. Priority Date: 10/08/2009
• Status: Abandoned Application

• Current Assignee: Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd.
• Inventors: WU, CHUN-TE
• Application Number:
  US12/889,429
• Publication Number:
  US 20110088098A1
• Time in Patent Office: Days
• US Class Current: 726/26
• CPC Class Codes: G10L 19/018 Audio watermarking, i.e. embedding inaudible data in the audio signal
• CPC Class Codes: G10L 25/09 the extracted parameters being zero crossing rates

Abstract

An electronic device stores audio data and digital right information, determines zero crossing rate of the audio data store in the memory module. The zero crossing rate is embedded in the audio data and indicates a rate at which the voltage of the audio data changes from positive to negative or back during a time period, the electronic device then reads the audio data, and searches special audio data in the audio data. The audio data with the zero crossing rate more than a constant is defined as the special audio data. The electronic device reads the digital copyright information, and writes the digital copyright information into the special audio data.

Claims

1. An electronic device, comprising:

a processor;

a storage module storing audio data; and

one or more software programs, wherein the one or more software programs are stored in the storage module and operable to be executed by the processor, and comprise;

a determining module to determine a zero crossing rate of the audio data, wherein the zero crossing rate is embedded in the audio data to indicate a rate at which voltage of the audio data changes from positive to negative or back during one time period;

a searching module to obtain special audio data from the audio data, wherein the zero crossing rate of the special audio data is more than a constant; and

a writing module to write digital copyright information of the audio data bit by bit into the special audio data to protect copyright of the audio data, wherein the digital copyright information is a binary number corresponding to the electronic device.

2. The electronic device as claimed in claim 1, wherein the determining module further determines if a current bit of the digital copyright information is “

1”

.

3. The electronic device as claimed in claim 2, wherein the writing module adds a preset value to the special audio data when the current bit of the digital copyright information is “

1”

.

4. The electronic device as claimed in claim 3, wherein the writing module determines if all bits of the digital copyright information are written into the audio data.

5. The electronic device as claimed in claim 4, wherein the writing module further reads a next bit of the digital copyright information if not all bits of the digital copyright information are written into the audio data.

6. The electronic device as claimed in claim 2, wherein the writing module reads a next bit when the current bit of the digital copyright information is not “

1”

.

8. The copyright protection method of audio data by digital copyright information as claimed in claim 6, wherein writing the digital copyright information bit by bit into the special audio data comprises the following computer-implemented steps:

reading a current bit of the digital copyright information and determining if the current bit of the digital copyright information is “

1”

;

adding a preset value to the special audio data if the current bit of the digital copyright information is “

1”

;

determines if all bits of the digital copyright information are written into the audio data; and

reading a next bit of the digital copyright information if not all bits of the digital information are written into the special audio data.

7. A copyright protection method of audio data by digital copyright information, the method comprises the following computer-implemented steps:

reading the audio data;

determining a reading zero crossing rate of the audio data, wherein the zero crossing rate is embedded in the audio data and indicates a rate at which voltage of the audio data changes from positive to negative or back during one time period;

obtaining special audio data from the audio data, wherein the zero crossing rate of the special audio data is more than a constant; and

reading the digital copyright information to write the digital copyright information bit by bit into the special audio data to protect copyright of the audio data.

9. The copyright protection method of an audio data by digital copyright information as claimed in claim 7, further comprising the step of:

reading a next bit if the current bit of the digital copyright information is not “

1”

.