Zhiguo Chang

Person

Shenzhen, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Two-dimensional dot matrix barcode encoding and identifying methods
- Patent number 10,410,103
- Issue date Sep 10, 2019
- SHENZHEN MPR TECHNOLOGY CO., LTD
- Zhengfang Li
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Two-dimensional dot matrix barcode encoding and reading methods
- Patent number 10,410,104
- Issue date Sep 10, 2019
- SHENZHEN MPR TECHNOLOGY CO., LTD
- Zhengfang Li
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Decoding method for matrix two-dimensional code
- Patent number 9,665,759
- Issue date May 30, 2017
- SHENZHEN MPR TECHNOLOGY CO., LTD
- Zhengfang Li
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
2D coding and decoding barcode and its method thereof
- Patent number 7,497,380
- Issue date Mar 3, 2009
- Shenzhen SYSCAN Technology Co., Ltd.
- Zhiguo Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Scanning device with a positioning sensor and a corresponding proce...
- Patent number 7,386,189
- Issue date Jun 10, 2008
- Shenzhen Syscan Technology Co. Ltd.
- Wei Zhang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
2D coding and decoding barcode and its method thereof
- Patent number 7,264,174
- Issue date Sep 4, 2007
- Shenzhen SYSCAN Technology Co., Limited
- Zhiguo Chang
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Two-dimensional Dot Matrix Barcode Encoding and Identifying Methods
- Publication number 20180341844
- Publication date Nov 29, 2018
- SHENZHEN MPR TECHNOLOGY CO., LTD.
- Zhengfang LI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Two-dimensional Dot Matrix Barcode Encoding and Reading Methods
- Publication number 20180341845
- Publication date Nov 29, 2018
- SHENZHEN MPR TECHNOLOGY CO., LTD.
- Zhengfang LI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
METHOD FOR DECODING MATRIX-TYPE TWO-DIMENSIONAL CODE
- Publication number 20150129658
- Publication date May 14, 2015
- SHENZHEN MPR TECHNOLOGY CO., LTD
- Zhengfang Li
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
TWO-DIRECTIONAL BAR CODE SYMBOL AND ITS ENCODING & DECODING METHOD
- Publication number 20070272755
- Publication date Nov 29, 2007
- SHENZHEN SYSCAN TECHNOLOGY CO., LTD.
- Zhiguo CHANG
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
2D coding and decoding barcode and its method thereof
- Publication number 20070114285
- Publication date May 24, 2007
- Shenzhen SYSCAN Technology Co., Ltd.
- Zhiguo Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Information Card with Multiple Storage Media and a Device and Metho...
- Publication number 20070084933
- Publication date Apr 19, 2007
- Shenzhen Syscan Technology Co. Ltd.
- Wei Zhang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
2D coding and decoding barcode and its method thereof
- Publication number 20050199721
- Publication date Sep 15, 2005
- Zhiguo Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Information card with multiple storage media and a device and metho...
- Publication number 20050092844
- Publication date May 5, 2005
- Shenzhen Syscan Technology Co. Ltd.
- Wei Zhang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Scanning device with a positioning sensor and a corresponding proce...
- Publication number 20050094902
- Publication date May 5, 2005
- Shenzhen Syscan Technology Co. Ltd.
- Wei Zhang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Zhiguo Chang

Person

Patents Grantslast 30 patents

Two-dimensional dot matrix barcode encoding and identifying methods

Two-dimensional dot matrix barcode encoding and reading methods

Decoding method for matrix two-dimensional code

2D coding and decoding barcode and its method thereof

Scanning device with a positioning sensor and a corresponding proce...

2D coding and decoding barcode and its method thereof

Patents Applicationslast 30 patents

Two-dimensional Dot Matrix Barcode Encoding and Identifying Methods

Two-dimensional Dot Matrix Barcode Encoding and Reading Methods

METHOD FOR DECODING MATRIX-TYPE TWO-DIMENSIONAL CODE

TWO-DIRECTIONAL BAR CODE SYMBOL AND ITS ENCODING & DECODING METHOD

2D coding and decoding barcode and its method thereof

Information Card with Multiple Storage Media and a Device and Metho...

2D coding and decoding barcode and its method thereof

Information card with multiple storage media and a device and metho...

Scanning device with a positioning sensor and a corresponding proce...