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    • 6. 发明授权
    • Apparatus and method for generating group key using status of wireless channel
    • 使用无线信道状态生成组密钥的装置和方法
    • US08976962B2
    • 2015-03-10
    • US13602231
    • 2012-09-03
    • Seon-Yeob BaekSang-Kyung YooSeok RyuSang-Han Lee
    • Seon-Yeob BaekSang-Kyung YooSeok RyuSang-Han Lee
    • H04L12/24H04L7/02
    • H04W12/04H04L63/065H04L63/16Y04S40/24
    • An apparatus and method for generating a group key using the status of a wireless channel are provided. The apparatus includes a representative channel response selection unit for selecting a representative channel response signal from among pilot signals received from slave terminals. A key generation unit generates a group key based on a representative channel response value of the representative channel response signal. A hash value generation unit generates a hash value corresponding to the group key. A transmission pilot control unit adjusts power intensities of transmission pilots of the respective slave terminals using the channel response value of the representative channel response signal and channel response values and transmission power intensities of the slave terminals. A communication unit is individually connected to the slave terminals and configured to transmit pilot signals, power intensities of which have been adjusted, and the hash value to the slave terminals.
    • 提供了使用无线信道的状态来生成组密钥的装置和方法。 该装置包括代表信道响应选择单元,用于从从从终端接收的导频信号中选择代表信道响应信号。 密钥生成单元基于代表信道响应信号的代表性信道响应值生成组密钥。 哈希值生成单元生成与组密钥对应的哈希值。 传输导频控制单元使用代表信道响应信号的信道响应值和从属终端的信道响应值和发射功率强度来调整各个从终端的传输导频的功率强度。 通信单元分别连接到从属终端,并且被配置为发送已经被调整的功率强度的导频信号以及从属终端的散列值。
    • 8. 发明授权
    • Multi-layer ohmic electrode, semiconductor light emitting element having multi-layer ohmic electrode, and method of forming same
    • 多层欧姆电极,具有多层欧姆电极的半导体发光元件及其形成方法
    • US08093618B2
    • 2012-01-10
    • US12517321
    • 2007-10-11
    • Jong Lam LeeSang Han Lee
    • Jong Lam LeeSang Han Lee
    • H01L33/00H01L23/48H01L23/52H01L23/40H01L21/44H01L21/28H01L21/3205
    • H01L33/405H01L33/32
    • There are provided an ohmic electrode, which includes a contact layer made of an Al alloy and formed on a nitride-based semiconductor layer functioning as a light emitting layer, a reflective layer made of Ag metal, formed on the contact layer and having some particles in-diffused to the semiconductor layer, and a protective layer formed on the reflective layer to restrain out-diffusion of the reflective layer; a method of forming the ohmic electrode; and a semiconductor light emitting element having the ohmic electrode. The present invention has strong adhesive strength and low contact resistance since the reflective layer and the light emitting layer directly form an ohmic contact due to the interface reaction during heat treatment, and the present invention has high light reflectance and excellent thermal stability since the contact layer and the protective layer restrain out-diffusion of the reflective layer during heat treatment.
    • 提供了一种欧姆电极,其包括由Al合金制成的接触层,形成在用作发光层的氮化物基半导体层上,形成在接触层上并具有一些颗粒的由Ag金属制成的反射层 以及保护层,形成在反射层上以抑制反射层的扩散; 形成欧姆电极的方法; 和具有欧姆电极的半导体发光元件。 由于反射层和发光层由于热处理期间的界面反应而直接形成欧姆接触,本发明具有强的粘合强度和低接触电阻,并且本发明具有高的光反射率和优异的热稳定性,因为接触层 并且保护层在热处理期间抑制反射层的扩散。
    • 10. 发明申请
    • OHMIC ELECTRODE AND METHOD THEREOF, SEMICONDUCTOR LIGHT EMITTING ELEMENT HAVING THIS
    • OHMIC电极及其方法,具有这一点的半导体发光元件
    • US20100084682A1
    • 2010-04-08
    • US12517321
    • 2007-10-11
    • Jong Lam LeeSang Han Lee
    • Jong Lam LeeSang Han Lee
    • H01L33/00H01L23/498H01L21/24
    • H01L33/405H01L33/32
    • There are provided an ohmic electrode, which includes a contact layer made of an Al alloy and formed on a nitride-based semiconductor layer functioning as a light emitting layer, a reflective layer made of Ag metal, formed on the contact layer and having some particles in-diffused to the semiconductor layer, and a protective layer formed on the reflective layer to restrain out-diffusion of the reflective layer; a method of forming the ohmic electrode; and a semiconductor light emitting element having the ohmic electrode. The present invention has strong adhesive strength and low contact resistance since the reflective layer and the light emitting layer directly form an ohmic contact due to the interface reaction during heat treatment, and the present invention has high light reflectance and excellent thermal stability since the contact layer and the protective layer restrain out-diffusion of the reflective layer during heat treatment.
    • 提供了一种欧姆电极,其包括由Al合金制成的接触层,形成在用作发光层的氮化物基半导体层上,形成在接触层上并具有一些颗粒的由Ag金属制成的反射层 以及保护层,形成在反射层上以抑制反射层的扩散; 形成欧姆电极的方法; 和具有欧姆电极的半导体发光元件。 由于反射层和发光层由于热处理期间的界面反应而直接形成欧姆接触,本发明具有强的粘合强度和低接触电阻,并且本发明具有高的光反射率和优异的热稳定性,因为接触层 并且保护层在热处理期间抑制反射层的扩散。