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    • 1. 发明授权
    • Secure key server based file and multimedia management system
    • 基于安全密钥服务器的文件和多媒体管理系统
    • US08621208B1
    • 2013-12-31
    • US12459630
    • 2009-07-06
    • Guoan Hu
    • Guoan Hu
    • H04L29/06
    • H04L63/061H04L63/045H04L2463/062
    • An embodiment of the present invention proposes a novel file and multimedia management and tracking system using a secure key server. The invention also proposes a novel, but very simple, digital watermarking technique. With the invented technology, the user's files/data can be encrypted and managed automatically, whether the data is stored in a USB format or in a public storage space. Furthermore, the file/data access record will be kept on the secure key server. Hence, an user can always track when the file/data was accessed. The advantage of the invented secure file manage system is that the key server never access the protected electronic data, and the data—encrypted or decrypted—are always on the local machine. The secure key server only manages the keys and records the key queryings. With the present invented technology, the multimedia server and the multimedia owner can protect their copyright, even when the multimedia is downloaded from the Internet. The key ideas of the invention are: (a) embedding the advanced secure key server proposed in a previous patent [2] into the multimedia server; (b) performing account management and key distribution automatically; (c) always pre-encrypting the electronic data; and (d) requiring that if anyone tries to get the decrypted electronic data, he/she must query the keys from the secure key server at least once when the software is started. This present invention also proposes a very simple digital watermarking system using reverse-verification technology.
    • 本发明的实施例提出了一种使用安全密钥服务器的新型文件和多媒体管理和跟踪系统。 本发明还提出了一种新颖但非常简单的数字水印技术。 利用本发明的技术,用户的文件/数据可以被自动加密和管理,无论数据是以USB格式存储还是存储在公共存储空间中。 此外,文件/数据访问记录将保存在安全密钥服务器上。 因此,用户可以始终跟踪文件/数据的访问。 本发明的安全文件管理系统的优点是,密钥服务器从不访问受保护的电子数据,并且数据加密或解密 - 始终在本地机器上。 安全密钥服务器仅管理密钥并记录密钥查询。 利用本发明的技术,多媒体服务器和多媒体所有者即使在从互联网下载多媒体时也可以保护其版权。 本发明的关键思想是:(a)将先前专利[2]中提出的高级安全密钥服务器嵌入到多媒体服务器中; (b)自动执行账户管理和密钥分发; (c)总是对电子数据进行预加密; 和(d)要求如果有人尝试获取解密的电子数据,他/她必须在软件启动时至少查询一次安全密钥服务器的密钥。 本发明还提出了一种使用反向验证技术的非常简单的数字水印系统。
    • 3. 发明授权
    • Double closed hydraulic mould stand
    • 双闭式液压模架
    • US08418521B2
    • 2013-04-16
    • US12935910
    • 2009-03-30
    • Hanguan XiaJuchen XiaGuoan HuXinyun WangJunsong JinYi Dong
    • Hanguan XiaJuchen XiaGuoan HuXinyun WangJunsong JinYi Dong
    • B21J9/12B21J9/18
    • B21J13/03B21J9/12B21J13/00
    • A double closed hydraulic mold stand is provided, which includes an up bottom plate (1), a down bottom plate (21), an up mold plate (8), a down mold plate (20), four guide sleeves (42), four guide columns (45), and a four mechanical linkage velocity ratio mechanism. The four guide sleeves (42) and the four guide columns (45) are distributed symmetrically and slidingly fit each other. An up piston cylinder, a down piston cylinder, an up bed piece (11), a down bed piece (31), an up concave mold seat (15), a down concave mold seat, an up concave mold (16), and a down concave mold (33) are fixed at the up bottom plate and the down bottom plate. An up pin-lift (3), a down pin-lift (24), an up punch pin seat (4), a down punch pin seat (22), an up punch pin (38), and a down punch pin (36) form an up piston and a down piston respectively. The up piston cylinder and the down piston cylinder have a split combined structure, which is convenient for manufacturing, installation, and maintenance. The up piston cylinder is repositioned by using a cylindrical spring. The down piston cylinder is repositioned by using a cylindrical spring and a nitrogen gas spring. The reposition is strong and fast, which facilitates vacuum oil absorption, power consumption saving, and productivity improvement. The present invention can be installed on a single-acting hydraulic press or a single-acting mechanical press for use, and has a wide application range.
    • 提供了一种双闭合液压模具支架,其包括上底板(1),下底板(21),上模板(8),下模板(20),四个导向套筒(42), 四个引导柱(45)和四个机械联动速度比机构。 四个导向套筒(42)和四个导柱(45)对称分布并滑动配合。 上活塞缸,下活塞缸,上床件(11),下床件(31),上凹模座(15),下凹模座,上凹模(16)和 下凹模具(33)固定在上底板和下底板上。 升针(3),向下推杆(24),上冲针座(4),下冲针座(22),上冲针(38)和下冲针 36)分别形成上升活塞和下降活塞。 上活塞气缸和下活塞气缸具有分体组合结构,方便制造,安装和维护。 上活塞缸通过使用圆柱形弹簧重新定位。 下降活塞缸通过使用圆柱形弹簧和氮气弹簧重新定位。 重新定位强劲快速,有利于真空吸油,省电省电,提高生产效率。 本发明可以安装在单作用液压机或单作用式机械压力机上,具有广泛的应用范围。
    • 4. 发明申请
    • Double Closed Hydraulic Mould Stand
    • 双闭式液压模具架
    • US20110030443A1
    • 2011-02-10
    • US12935910
    • 2009-03-30
    • Hanguan XiaJuchen XiaGuoan HuXinyun WangJunsong JinYi Dong
    • Hanguan XiaJuchen XiaGuoan HuXinyun WangJunsong JinYi Dong
    • B21J13/00
    • B21J13/03B21J9/12B21J13/00
    • A double closed hydraulic mould stand is provided, which includes an up bottom plate (1), a down bottom plate (21), an up mould plate (8), a down mould plate (20), four guide sleeves (42), four guide columns (45), and a four mechanical linkage velocity ratio mechanism. The four guide sleeves (42) and the four guide columns (45) are distributed symmetrically and slidingly fit each other. An up piston cylinder, a down piston cylinder, an up bed piece (11), a down bed piece (31), an up concave mould seat (15), a down concave mould seat, an up concave mould (16), and a down concave mould (33) are fixed at the up bottom plate and the down bottom plate. An up pin-lift (3), a down pin-lift (24), an up punch pin seat (4), a down punch pin seat (22), an up punch pin (38), and a down punch pin (36) form an up piston and a down piston respectively. The up piston cylinder and the down piston cylinder have a split combined structure, which is convenient for manufacturing, installation, and maintenance. The up piston cylinder is repositioned by using a cylindrical spring. The down piston cylinder is repositioned by using a cylindrical spring and a nitrogen gas spring. The reposition is strong and fast, which facilitates vacuum oil absorption, power consumption saving, and productivity improvement. The present invention can be installed on a single-acting hydraulic press or a single-acting mechanical press for use, and has a wide application range.
    • 提供了一种双闭合液压模具支架,其包括上底板(1),下底板(21),上模板(8),下模板(20),四个导向套筒(42), 四个引导柱(45)和四个机械联动速度比机构。 四个导向套筒(42)和四个导柱(45)对称分布并滑动配合。 上活塞缸,下活塞缸,上床件(11),下床件(31),上凹模座(15),下凹模座,上凹模(16)和 下凹模具(33)固定在上底板和下底板上。 升针(3),向下推杆(24),上冲针座(4),下冲针座(22),上冲针(38)和下冲针 36)分别形成上升活塞和下降活塞。 上活塞气缸和下活塞气缸具有分体组合结构,方便制造,安装和维护。 上活塞缸通过使用圆柱形弹簧重新定位。 下降活塞缸通过使用圆柱形弹簧和氮气弹簧重新定位。 重新定位强劲快速,有利于真空吸油,省电省电,提高生产效率。 本发明可以安装在单作用液压机或单作用式机械压力机上,具有广泛的应用范围。
    • 5. 发明授权
    • Method and apparatus for integrated circuits design security
    • 集成电路设计安全的方法和装置
    • US07941769B1
    • 2011-05-10
    • US11729371
    • 2007-03-28
    • Guoan Hu
    • Guoan Hu
    • G06F17/50
    • G06F17/505G06F21/76
    • An embodiment of the present invention provides a design specification to provide both design and manufacture security without increasing the chip area or reducing the chip performance. The invention employs “free” encryption and uses flash memory or anti-fuse technology for the security implementation. This secure methodology could be embedded into any RTL synthesis tool, or be created in a stand-alone tool. For a RTL netlist, some registers are selected as the candidates for the “secure cells”, and all “secure cells” must have only one output. A random key will be generated (we call it the “real key”) to decide whether each register is to be inverted or not. All “secure cells” will be mapped to the special registers in the technology library.
    • 本发明的实施例提供了一种设计规范,以提供设计和制造安全性,而不增加芯片面积或降低芯片性能。 本发明采用“免费”加密技术,并采用闪存或反熔丝技术实现安全。 这种安全的方法可以嵌入到任何RTL综合工具中,也可以在独立的工具中创建。 对于RTL网表,选择一些寄存器作为“安全单元”的候选,所有“安全单元”必须只有一个输出。 将产生一个随机密钥(我们称之为“真实密钥”)来决定每个寄存器是否被反转。 所有“安全单元”将被映射到技术库中的特殊寄存器。