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    • 3. 发明申请
    • Advanced Video Camera Privacy Lock
    • 高级摄像机隐私锁
    • US20130286225A1
    • 2013-10-31
    • US13457303
    • 2012-04-26
    • Roy StedmanRocco Ancona
    • Roy StedmanRocco Ancona
    • H04N5/225
    • H04N21/4542H04N21/4223
    • A video camera privacy lock is set forth. The video camera privacy lock includes a low level filter driver that install and maintains a first position in a filter graph. The filter driver provides a locked media signal to the next sequential item rather than to a media stream until and unless the filter is unlocked. The locked media signal may be a blank screen, a text message, an icon, a static image (such as an avatar, a photograph, etc., pixilated video, or some other predetermined output). Also, in various embodiments, the driver is locked by default, thereby increasing user trust that the video camera only transmits a media signal when desired.
    • 阐述了摄像机隐私锁。 摄像机隐私锁包括一个低级过滤器驱动程序,用于在过滤器图形中安装和维护第一个位置。 过滤器驱动程序提供锁定的媒体信号到下一个顺序项,而不是媒体流,直到和除非过滤器被解锁。 锁定的媒体信号可以是空白屏幕,文本消息,图标,静态图像(例如头像,照片等,像素化视频或一些其它预定输出)。 此外,在各种实施例中,默认情况下驱动程序被锁定,从而增加用户的信任,即当需要时摄像机仅发送媒体信号。
    • 4. 发明授权
    • Advanced video camera privacy lock
    • 高级摄像机隐私锁
    • US08896718B2
    • 2014-11-25
    • US13457303
    • 2012-04-26
    • Roy StedmanRocco Ancona
    • Roy StedmanRocco Ancona
    • H04N5/232
    • H04N21/4542H04N21/4223
    • A video camera privacy lock is set forth. The video camera privacy lock includes a low level filter driver that install and maintains a first position in a filter graph. The filter driver provides a locked media signal to the next sequential item rather than to a media stream until and unless the filter is unlocked. The locked media signal may be a blank screen, a text message, an icon, a static image (such as an avatar, a photograph, etc., pixilated video, or some other predetermined output). Also, in various embodiments, the driver is locked by default, thereby increasing user trust that the video camera only transmits a media signal when desired.
    • 阐述了摄像机隐私锁。 摄像机隐私锁包括一个低级过滤器驱动程序,用于在过滤器图形中安装和维护第一个位置。 过滤器驱动程序提供锁定的媒体信号到下一个顺序项,而不是媒体流,直到和除非过滤器被解锁。 锁定的媒体信号可以是空白屏幕,文本消息,图标,静态图像(例如头像,照片等,像素化视频或一些其它预定输出)。 此外,在各种实施例中,默认情况下驱动程序被锁定,从而增加用户的信任,即当需要时摄像机仅发送媒体信号。
    • 7. 发明授权
    • Single-pass color quantization for graphic images
    • 用于图形图像的单程彩色量化
    • US06195081B1
    • 2001-02-27
    • US09008167
    • 1998-01-16
    • Roy Stedman
    • Roy Stedman
    • G09G504
    • H04N1/6058
    • A system and method for performing a single-pass color quantization for graphic images on a computer. The computer includes a processor capable of running operating code, an input device accessible by the processor for providing a source image, and an output device for displaying a target image. Both the source image and target image include a plurality of pixels, each having red-green-blue components. However, there are fewer available colors for the target image than for the source image. A program instructs the processor to reduce the source image to the target image by reading a pixel from the target image and comparing the color of the pixel to mappings stored in a table. If the pixel color does not correspond to a mapping in the table, then the program instructs the processor to convert the pixel color into hue-whiteness-blackness (HWB) components, map the HWB components to a color of the target image, and store the mapping in the table. If the pixel color does correspond to a mapping in the table, then the program instructs the processor to simply retrieve the mapping.
    • 一种用于对计算机上的图形图像执行单遍颜色量化的系统和方法。 计算机包括能够运行操作码的处理器,由处理器可访问的用于提供源图像的输入设备,以及用于显示目标图像的输出设备。 源图像和目标图像都包括多个像素,每个具有红 - 绿 - 蓝分量。 然而,目标图像的可用颜色比源图像少。 程序指示处理器通过从目标图像读取像素并将像素的颜色与存储在表中的映射进行比较来将源图像减少到目标图像。 如果像素颜色不对应于表中的映射,则程序指示处理器将像素颜色转换为色调 - 黑度(HWB)分量,将HWB分量映射到目标图像的颜色,并存储 表中的映射。 如果像素颜色确实对应于表中的映射,则程序指示处理器简单地检索映射。