13.
    发明专利
    未知

    公开(公告)号:DE60122226T2

    公开(公告)日:2007-08-23

    申请号:DE60122226

    申请日:2001-02-21

    Inventor: GORDON GARY B

    Abstract: A centrifuge (AP1) includes a centrifuge rotor (13) that rotates to provide supergravity conditions and tilt rotors (17) that provide for sample agitation under the supergravity conditions. The centrifuge rotor is integral with a hollow centrifuge drive shaft (49). A tilt-drive shaft (69) extends through the hollow and rotates coaxially of the centrifuge rotor. The tilt-drive shaft has a pinion (71) that engages the tilt rotors, which thus are made to rotate about tilt axes that are spaced from and parallel to the centrifuge axis. A centrifuge motor (41) is mechanically coupled to the centrifuge drive shaft to rotate the centrifuge rotor. A tilt motor (61) is mechanically coupled to the tilt drive shaft for imparting a rocking motion of the tilt rotors (and thus of mounted sample containers (100)) relative to the centrifuge rotor. Both motors are controlled by a servo (23) that receives orientation information from orientation encoders (75 and 77) associated with the motors; the tilt motor is phase locked to the centrifuge motor to ensure precise relative motion control. The centrifuge motor is typically rotated to achieve a centrifugal force at the tilt rotors of about 1000 G. The tilt motor is controlled differentially relative to the centrifuge motor so that the tilt rotors rotate controllably, at, above and/or below the centrifuge rotation rate to achieve the desired rotation relative to the centrifuge.

    14.
    发明专利
    未知

    公开(公告)号:DE60122226D1

    公开(公告)日:2006-09-28

    申请号:DE60122226

    申请日:2001-02-21

    Inventor: GORDON GARY B

    Abstract: A centrifuge (AP1) includes a centrifuge rotor (13) that rotates to provide supergravity conditions and tilt rotors (17) that provide for sample agitation under the supergravity conditions. The centrifuge rotor is integral with a hollow centrifuge drive shaft (49). A tilt-drive shaft (69) extends through the hollow and rotates coaxially of the centrifuge rotor. The tilt-drive shaft has a pinion (71) that engages the tilt rotors, which thus are made to rotate about tilt axes that are spaced from and parallel to the centrifuge axis. A centrifuge motor (41) is mechanically coupled to the centrifuge drive shaft to rotate the centrifuge rotor. A tilt motor (61) is mechanically coupled to the tilt drive shaft for imparting a rocking motion of the tilt rotors (and thus of mounted sample containers (100)) relative to the centrifuge rotor. Both motors are controlled by a servo (23) that receives orientation information from orientation encoders (75 and 77) associated with the motors; the tilt motor is phase locked to the centrifuge motor to ensure precise relative motion control. The centrifuge motor is typically rotated to achieve a centrifugal force at the tilt rotors of about 1000 G. The tilt motor is controlled differentially relative to the centrifuge motor so that the tilt rotors rotate controllably, at, above and/or below the centrifuge rotation rate to achieve the desired rotation relative to the centrifuge.

    15.
    发明专利
    未知

    公开(公告)号:DE60304619T2

    公开(公告)日:2006-09-07

    申请号:DE60304619

    申请日:2003-05-09

    Abstract: A bioanalytic method (AP1) replenishes depleted zones in a sample liquid (161, 162, 163) in a shallow probe-array reaction cell (101, 102, 103) under ultragravity centrifugal forces. The ultragravity overcomes viscous and surface-tension forces to permit replenishment despite a shallow reaction-cell depth of 25 microns. Thus, replenishment is achieved using 1/10 the sample volume normally used in probe-array systems that use mixing to facilitate binding reactions. For similar amounts of sample, the shallow cell takes advantage of a ten-times greater concentration to achieve much greater signal strengths in much shorter times. Thus, signal strengths that normally take 17 hours to achieve are achieved in about 60 minutes.

    Wireless screen pointer with compressed data transfer for power saving

    公开(公告)号:GB2413198A

    公开(公告)日:2005-10-19

    申请号:GB0505837

    申请日:2005-03-22

    Abstract: An apparatus for controlling the position of a screen pointer comprises a movement sensor for sensing movement of the device and generating corresponding movement data. The movement sensor is configured to compress the movement data before transmitting the data over a wireless link. By compressing data in this way power is saved in the wireless device. The movement data may be generated by correlating successive images obtained by using a light source in the device to create reflected images of a surface. In alternative embodiments the movement data may be an angle and magnitude or acceleration and velocity data. The compression algorithm may use logarithms to code the value for transmission. In a further embodiment, a lookup table may be used to identify a compressed data value for movement data. The movement sensor may be configured to identify a difference between movement data and compressed data and adjust the movement data for a subsequent reporting period based on the difference.

    Optical device for controlling a screen cursor

    公开(公告)号:GB2406167A

    公开(公告)日:2005-03-23

    申请号:GB0421100

    申请日:2003-11-07

    Abstract: An apparatus, such as a mouse, for controlling a screen cursor for an electronic device (10) having a display screen includes a light source (2) for illuminating an imaging surface (6), thereby generating reflected images. An optical motion sensor generates digital images from the reflected images at a first rate. The motion sensor (16) is configured to generate movement data based on digital images. The movement data is indicative of relative motion between the imaging surface and the apparatus. The motion sensor is configured to modify the first frame rate to one of a plurality of alternative frame rates based on a current relative velocity between the imaging surface and the apparatus. In an alternative embodiment the apparatus is configured to enter a low power mode after a period of inactivity, wherein the generated digital images have few pixels than in the full power mode. In yet another embodiment, the motion sensor generates a plurality of pairs of digital images with an intra-pair time delay and an inter-pair time delay, the inter-pair time delay being greater than the intra-pair time delay. The apparatus may alternatively be an optical trackball or an optical fingerprint sensing device.

    Optical device for controlling a screen cursor

    公开(公告)号:GB2405925A

    公开(公告)日:2005-03-16

    申请号:GB0421101

    申请日:2003-11-07

    Abstract: An apparatus, such as a mouse, for controlling a screen cursor for an electronic device (10) having a display screen includes a light source (2) for illuminating an imaging surface (6), thereby generating reflected images. An optical motion sensor generates digital images from the reflected images at a first rate. The motion sensor (16) is configured to generate movement data based on digital images. The movement data is indicative of relative motion between the imaging surface and the apparatus. The motion sensor is configured to modify the first frame rate to one of a plurality of alternative frame rates based on a current relative velocity between the imaging surface and the apparatus. In an alternative embodiment the apparatus is configured to enter a low power mode after a period of inactivity, wherein the generated digital images have few pixels than in the full power mode. In yet another embodiment, the motion sensor generates a plurality of pairs of digital images with an intra-pair time delay and an inter-pair time delay, the inter-pair time delay being greater than the intra-pair time delay. The apparatus may alternatively be an optical trackball or an optical fingerprint sensing device.

    Character input, menu selection or value setting with an optical fingertip tracker

    公开(公告)号:GB2373837A

    公开(公告)日:2002-10-02

    申请号:GB0203180

    申请日:2002-02-11

    Abstract: An optical fingertip tracker, 1 which may be called a pseudo trackball, responds to the motion of the texture on one of the user's digits 3 pressed against an image input aperture 8 to produce motion signals 22 processed within an appliance to be controlled. The appliance may have a minimal GUI, such as an LCD display (30, Fig 2) having only a modest number of low resolution pixel locations and/or preestablished characters or icons. An appliance control parameter is set or adjusted in response to translation of the fingertip along a particular axis. E.g., to enter a parameter value (volume) a changing bar graph (34, Fig 4) can be displayed. The display might even be omitted; to set the tone control of an audio appliance it can be sufficient to simply adjust the tone until the result is as desired. A numeric display of control parameter digits may be desirable, as when moving the fingertip tunes a receiver. There can be several particular axes (37,38, Fig 5) along which fingertip movement changes an associated appliance control parameter. Other appliances can include character recognition of input characters traced by the fingertip. A pressure sensitive switch 16 (26, Fig 2) coupled to the fingertip tracker can serve as a delimiting mechanism useful in ratification of interpreted results and in editing strings that have been input. Excursions is a loss-of-correlation signal 40 can be detected and interpreted as tapping the image input aperture with the fingertip. Such "taps" and "double taps" can be defined, and have selected meanings associated therewith that may be used in conjunction with, or in place of, the pressure sensitive switch.

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