Multimedia based security systems
    1.
    发明授权
    Multimedia based security systems 失效
    基于多媒体的安全系统

    公开(公告)号:US5345549A

    公开(公告)日:1994-09-06

    申请号:US968769

    申请日:1992-10-30

    IPC分类号: B60S1/08 G06F21/00 G06F15/20

    摘要: A computer-utilizing security system and method involving a collection of personally selected strong-reaction sensory and/or historical multimedia-type cues in combination with a related set of structured information. The cue combination is submitted by one or more individuals to be authorized to access a secure environment, so that when a multimedia cue along with a set of queries contained in and regarding the related information are presented for gaining entry to the secured environment, an authorized individual may readily respond to the queries with correct reactions based on strong personal recall.

    摘要翻译: 一种计算机利用的安全系统和方法,其涉及个人选择的强反应感官和/或历史多媒体类型提示的组合以及相关的一组结构化信息。 提示组合由一个或多个个人提交以被授权访问安全环境,使得当呈现多媒体提示以及包含在相关信息中并涉及相关信息的一组查询以获得进入安全环境时,授权 个人可能会根据强烈的个人回忆,以正确的反应轻易回应查询。

    Cyclic video region transmission for videoconferencing systems
    2.
    发明授权
    Cyclic video region transmission for videoconferencing systems 失效
    视频会议系统的循环视频区域传输

    公开(公告)号:US4935953A

    公开(公告)日:1990-06-19

    申请号:US344180

    申请日:1989-04-27

    IPC分类号: H04N7/15 H04N7/14 H04N7/26

    摘要: A system for full motion videoconferencing. The total video image space is broken down into regions of such position and size relative to the space that the image data in predetermined sections of the regions is overlapped during the cyclic transmission thereof. The reception and display of the superimposed regions provides a significant increase in the perceived transmission rate in the overlapped sections, rendering those sections suitable for full motion effects.

    Masked combinations of video slices for computer display
    3.
    发明授权
    Masked combinations of video slices for computer display 失效
    用于计算机显示的视频幻灯片的屏蔽组合

    公开(公告)号:US5134668A

    公开(公告)日:1992-07-28

    申请号:US477275

    申请日:1990-02-08

    申请人: Arthur Appel

    发明人: Arthur Appel

    CPC分类号: H04N1/4055

    摘要: A method and system of image processing which utilizes masked video slices to show grey scale images on a bilevel output device. A plurality of video slices of an image are formed by a binary thresholding technique, with each slice displaying the image at different levels of intensity. The same number of video masks are also formed which each comprise a unique pattern of on and off pixels. Each of the video masks is ANDed with a corresponding one of the images slices to create a plurality of masked video slices. The masked video slices are combined to create a binary grey scale image of the original image that can be displayed on a bilevel output device.