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    • 5. 发明申请
    • Radio frequency (RF) modulator with narrow bandpass filter
    • 具有窄带通滤波器的射频(RF)调制器
    • US20050190304A1
    • 2005-09-01
    • US10834177
    • 2004-04-29
    • Jong RyuDuck KimDong MoonDae LeeKyu-O Jeon
    • Jong RyuDuck KimDong MoonDae LeeKyu-O Jeon
    • H04N5/38H04B1/18H04N5/208H04N5/40H04N7/04
    • H04N5/40
    • Disclosed herein is RF modulator with a narrow bandpass filter. The RF modulator for modulating video and audio signals into RF signals corresponding to a frequency band of a predetermined channel includes an oscillation unit for generating a predetermined RF signal suitable for the frequency band of the predetermined channel; a mixer for modulating the video and audio signals using the RF signal generated from the oscillation unit; and a narrow bandpass filter for receiving an RF-modulated signal from the mixer, and passing only a signal of the frequency band of the predetermined channel from among the RF-modulated signal. Therefore, the RF modulator can remove or block unnecessary components such as lower side band and harmonic-frequency signals generated after video and audio signals have been RF-modulated, such that it can prevent interference between channels from being generated, resulting in the creation of more excellent video and audio signals.
    • 本文公开了具有窄带通滤波器的RF调制器。 用于将视频和音频信号调制成对应于预定信道的频带的RF信号的RF调制器包括用于产生适合于预定信道的频带的预定RF信号的振荡单元; 混频器,用于使用从振荡单元产生的RF信号来调制视频和音频信号; 以及窄带通滤波器,用于从混频器接收RF调制信号,并且仅从RF调制信号中仅通过预定信道的频带的信号。 因此,RF调制器可以去除或阻止在视频和音频信号被RF调制之后产生的低边带和谐波频率信号等不必要的部件,使得它可以防止信道之间的干扰被产生,导致产生 更优秀的视频和音频信号。
    • 6. 发明申请
    • Method of preventing leakage of personal information of user using server registration information and system using the method
    • 使用该方法防止用户使用服务器注册信息和系统泄露个人信息的方法
    • US20070143845A1
    • 2007-06-21
    • US11633961
    • 2006-12-05
    • Youn JeongJong RyuKook KimDong Seo
    • Youn JeongJong RyuKook KimDong Seo
    • G06F12/14
    • G06F21/6209G06F21/577G06F2221/2115G06F2221/2119H04L63/12H04L63/14H04L63/1483
    • Provided are a method and system for preventing personal information of a user using server registration information and an authentication system connected to the Internet. The method includes collecting information regarding servers which provide an Internet service; classifying the safety of sites using the servers based on the information; and providing site information containing the information regarding the servers at the request of a client which tries to access the servers. In the method, addresses of servers of major organizations connected to a network are registered in advance. Therefore, when a terminal of a user tries to access an external site through the network, it is possible to identify which organization has actually registered an address of the site and determine whether the site is a harmful site. If the site is determined to be harmful, the access to the site is blocked, thereby preventing the damages of phishing.
    • 提供了一种用于使用服务器注册信息和连接到因特网的认证系统来防止用户的个人信息的方法和系统。 该方法包括收集关于提供因特网服务的服务器的信息; 基于信息对使用服务器的站点的安全进行分类; 以及在尝试访问服务器的客户端的请求时提供包含有关服务器信息的站点信息。 在该方法中,预先注册连接到网络的主要组织的服务器的地址。 因此,当用户的终端尝试通过网络访问外部站点时,可以识别哪个组织实际上注册了该站点的地址并且确定站点是否是有害站点。 如果该网站被确定为有害的,那么对该网站的访问被阻止,从而防止网络钓鱼的损害。