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    • 1. 发明申请
    • Using data compression to achieve lower linear bit densities on a storage medium
    • 使用数据压缩来实现存储介质上较低的线性位密度
    • US20050078399A1
    • 2005-04-14
    • US10683973
    • 2003-10-10
    • Kendall FungDavid DaltonRobert Warren
    • Kendall FungDavid DaltonRobert Warren
    • G11B15/18G11B20/00G11B20/10G11B20/12
    • G11B20/1217G11B20/00007G11B20/10G11B2020/1222G11B2020/1287G11B2020/1298G11B2220/2516
    • Method and apparatus for transferring data to and from a data storage medium, such as a rotatable disc in a data storage device. The medium includes a data sector field with a physical length sufficient to store a first data block at a first write frequency. A compression engine compresses the first data block to provide a reduced size, compressed data block. The compressed data block is then written to the data sector field at a second write frequency less than the first write frequency so that the written compressed data block occupies substantially the physical length of said data sector field. This achieves a decreased linear bit density and tends to increase communication channel signal to noise (SNR) ratios and reduce error rates. Data slipping is further advantageously employed so that the first data block further stores at least a portion of a second compressed data block.
    • 用于向数据存储介质(例如数据存储设备中的可旋转盘)传送数据和从数据存储介质传送数据的方法和装置。 介质包括具有足以存储第一写入频率的第一数据块的物理长度的数据扇区字段。 压缩引擎压缩第一数据块以提供减小尺寸的压缩数据块。 然后,压缩数据块以小于第一写入频率的第二写入频率被写入数据扇区字段,使得所写入的压缩数据块基本上占据所述数据扇区字段的物理长度。 这实现了线性位密度的降低,并且倾向于增加通信信道信噪比(SNR)比并降低误码率。 更有利地采用数据滑移,使得第一数据块还存储第二压缩数据块的至少一部分。
    • 3. 发明申请
    • Lighting device
    • US20060120070A1
    • 2006-06-08
    • US11338986
    • 2006-01-25
    • David DaltonAngelo KotsisJohn Brown
    • David DaltonAngelo KotsisJohn Brown
    • F21L4/04
    • F21L4/04F21V21/0885F21V21/145F21Y2103/00F21Y2113/00F21Y2115/10Y10S362/80
    • The present invention provides a lighting device having a light housing including a light source being rotatably connected by a rotatable connection means to a lighting device body, said body having said rotatable connection means positioned so as to allow said light housing to lay adjacent said body and to define therebetween a narrow space which is accessible in a base to top direction. The present invention also provides a light housing for a lighting device, said light housing including a light source holder at one end thereof, said light housing also including means to receive a mounting member at one end of said light housing opposite to said light source holder, said light housing being characterised by said light source holder allowing limited pivotal movement of said light source when said light source is mounted in said light source holder, said limited pivotal movement being in the range of 5° to 30°. The present invention further provides a method of assembling a light housing as claimed in any one of the preceding claims, said method including the steps of: attaching said cover to said box; inserting said tubular lens through said aperture; engaging said spigot with one end of said tubular lens; inserting said lighting source into the second end of said tubular lens; and securing said light source to said housing. The present invention also provides light housing for a lighting device, said light housing including a first and second face and sides there around, a first side having a mounting spigot to receive one end of a tubular lens, and a second side opposite to said first side having an aperture therethrough, through which aperture tubular lens can pass and in which is received the other end of said tubular lens, said aperture and said mounting spigot being aligned.
    • 5. 发明申请
    • Rechargeable Flashlight
    • 充电手电筒
    • US20070279901A1
    • 2007-12-06
    • US11838411
    • 2007-08-14
    • David DaltonMichael SquiresKw AuDavid AlessioSiu Ng
    • David DaltonMichael SquiresKw AuDavid AlessioSiu Ng
    • F21L4/00
    • F21V13/045F21L4/085F21Y2115/10
    • The present invention provides a flashlight or device having a body with a battery, and a circuit therebetween; recharging terminals for recharging the battery and an adaptor having electrical connectors for connecting to a power supply; structural connection means on the body and or the adaptor to releasably connect the body and the adaptor; and electrical connection means on both the body and the adaptor to releasably electrically connect the terminals and the adaptor. The present invention also provides a flashlight having a body with a light means at one end, a battery, and a circuit therebetween, so that when the circuit is closed the light means will generate light; the light means including a conical reflector, a white light LED emitting a conical light output and a double convex lens portion, the double convex lens portion being located away from the LED so that the outside diameter of the double convex lens portion will a circle of light from the LED which is of substantially the same diameter.
    • 本发明提供一种手电筒或装置,其具有带电池的主体及其间的电路; 用于为电池再充电的充电端子和具有用于连接到电源的电连接器的适配器; 主体和/或适配器上的结构连接装置可释放地连接主体和适配器; 以及电连接装置,其在主体和适配器上以可释放地电连接端子和适配器。 本发明还提供了一种手电筒,其具有在一端具有光装置的主体,电池及其间的电路,使得当电路闭合时,光装置将产生光; 所述光装置包括圆锥形反射器,发出锥形光输出的白光LED和双凸透镜部分,所述双凸透镜部分远离所述LED,使得所述双凸透镜部分的外径将为 LED的直径大致相同的光。