Digital camera system and method capable of performing document scans
    1.
    发明授权
    Digital camera system and method capable of performing document scans 有权
    能进行文件扫描的数码相机系统和方法

    公开(公告)号:US06633332B1

    公开(公告)日:2003-10-14

    申请号:US09311517

    申请日:1999-05-13

    IPC分类号: H04N5225

    摘要: A digital camera system is provided for capturing pictures of scenery or scanning the text of a document. A lens of the digital camera system receives light from a scene, and a conversion device defines a first set of digital data based on this light. A scanning mechanism included within the digital camera system scans a document as the system is passed over the surface of the document and produces a second set of data that defines an image of the document. An audio signal interface included within the digital camera system receives an audio message and defines a third set of digital data based on the audio message. A system controller stores the first, second, and third sets of data into a storage device. If desired, the first and second sets of data may be merged together to define a combined image depicting at least a portion of the scene defined by the first set of digital data and depicting at least a portion of the document defined by the second set of digital data.

    摘要翻译: 提供了一种用于拍摄风景照片或扫描文件文本的数字照相机系统。 数字照相机系统的透镜从场景接收光,并且转换装置基于该光定义第一组数字数据。 包括在数字照相机系统内的扫描机构在系统通过文件表面时扫描文档,并产生定义文档图像的第二组数据。 包括在数字照相机系统内的音频信号接口接收音频消息,并基于该音频消息定义第三组数字数据。 系统控制器将第一,第二和第三组数据存储到存储设备中。 如果需要,第一和第二组数据可以被合并在一起以限定描绘由第一组数字数据定义的场景的至少一部分的组合图像,并且描绘由第二组数据定义的文档的至少一部分 数字数据。

    Coordinated switching in a multiple switching regulator system to lower peak current load

    公开(公告)号:US06265855B1

    公开(公告)日:2001-07-24

    申请号:US09437669

    申请日:1999-11-10

    IPC分类号: G05F140

    摘要: The switching transistors in multiple switching regulators sharing the same input power source are coordinated to lower the peak current drain on the input power source. The turn on times of the transistors in each regulator are set so that each switching transistor turns on at a predetermined time in a cycle. The predetermined time for each regulator is chosen so that the maximum peak current drain on the input power source is minimized. The predetermined times may be changed on-the-fly by inputs to the system when information about current or projected output loads are known. The transistors in each regulator may also be turned on when the transistor in the previous regulator in a sequence turns off. Another embodiment lets the regulator with the largest change in input current over a cycle run independently. The other regulators then switch in a designated order, or at designated times after the first regulator turns its switch off.

    Coordinated switching in a multiple switching regulator system to lower peak current load
    4.
    发明授权
    Coordinated switching in a multiple switching regulator system to lower peak current load 有权
    协调切换多重开关调节器系统以降低峰值电流负载

    公开(公告)号:US06437548B2

    公开(公告)日:2002-08-20

    申请号:US09842334

    申请日:2001-04-25

    IPC分类号: G05F140

    摘要: The switching transistors in multiple switching regulators sharing the same input power source are coordinated to lower the peak current drain on the input power source. The turn on times of the transistors in each regulator are set so that each switching transistor turns on at a predetermined time in a cycle. The predetermined time for each regulator is chosen so that the maximum peak current drain on the input power source is minimized. The predetermined times may be changed on-the-fly by inputs to the system when information about current or projected output loads are known. The transistors in each regulator may also be turned on when the transistor in the previous regulator in a sequence turns off. Another embodiment lets the regulator with the largest change in input current over a cycle run independently. The other regulators then switch in a designated order, or at designated times after the first regulator turns its switch off.

    摘要翻译: 协调共享相同输入电源的多个开关调节器中的开关晶体管被协调以降低输入电源上的峰值电流消耗。 每个调节器中的晶体管的导通时间被设置为使得每个开关晶体管在一个周期中的预定时间内导通。 选择每个调节器的预定时间,使得输入电源上的最大峰值电流消耗最小化。 当关于当前或预计的输出负载的信息是已知的时,可以通过输入到系统来改变预定时间。 当序列中的前一个调节器中的晶体管关断时,每个稳压器中的晶体管也可以导通。 另一个实施例使调节器在一个循环中输入电流的最大变化独立运行。 然后其他稳压器以指定的顺序切换,或者在第一个调节器关闭之后的指定时间。