利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

41 条记录 (耗时 0.03 秒)

    Spray-mode inkjet printer
    2.
    发明授权
    Spray-mode inkjet printer 失效
    喷雾式喷墨打印机

    公开(公告)号：US5984457A

    公开(公告)日：1999-11-16

    申请号：US948094

    申请日：1997-10-09

    申请人： Howard H. Taub ,  John D. Meyer

    发明人： Howard H. Taub ,  John D. Meyer

    IPC分类号： B41J2/05 ,  B41J2/21 ,  G01D15/18

    CPC分类号： B41J2/2132 ,  B41J2002/14322

    摘要： A thermal inkjet printer is operated in a spray-mode by deliberately firing ink droplets from a printhead while the meniscus of the remaining ink in the printhead is settling down. Generally, the drops will not travel in a direction perpendicular to the printing surface. By calibrating the printhead, one can determine how many drops are needed to be fired within the boundaries of a pixel to achieve any given optical density. Drops may be fired at rates above 50 kHz, and, depending on the ink, above 70 kHz. Ink with a viscosity of 10 centi-Poise or less, and even 2 centi-Poise or less, may be used. When one is printing both text and non-text images on the same surface, a digital representation of an image to be printed is analyzed and divided into non-text image fields and text fields. Each non-text image field is printed on the printing surface by projecting the corresponding ink droplets in the spray-mode. Each text field is printed on the printing surface in a text-mode, in which the firing rate is typically reduced to 5-10 kHz and the corresponding ink droplets are projected substantially perpendicular to the printing surface.

    摘要翻译： 热喷墨打印机通过在打印头中剩余墨水的弯液面稳定下来故意地从打印头喷射墨滴而以喷雾模式操作。 通常，液滴不会在垂直于印刷表面的方向上行进。 通过校准打印头，可以确定需要在像素的边界内发射多少液滴以实现任何给定的光密度。 滴液可以以50kHz以上的速率被发射，并且取决于油墨，高于70kHz。 可以使用粘度为10厘泊或更小，甚至2厘泊或更小的墨。 当在相同表面上打印文本和非文本图像时，将要打印的图像的数字表示被分析并分成非文本图像字段和文本字段。 通过将相应的墨滴投影在喷射模式中，每个非文本图像场被印刷在打印表面上。 每个文本字段以文本模式打印在打印表面上，其中喷射速率通常降低到5-10kHz，并且相应的墨滴基本上垂直于打印表面投影。

    Circuit and method for correcting distortion in a digital audio system
    6.
    发明授权
    Circuit and method for correcting distortion in a digital audio system 失效
    用于校正数字音频系统中的失真的电路和方法

    公开(公告)号：US4764938A

    公开(公告)日：1988-08-16

    申请号：US436195

    申请日：1982-10-25

    申请人： John D. Meyer

    发明人： John D. Meyer

    IPC分类号： H03H17/00 ,  H03H17/08 ,  H04B3/14 ,  H03H7/30

    CPC分类号： H04B3/147

    摘要： A circuit and method are provided to compensate for the non-linear delay characteristics of a digital audio system introduced by the systems anti-aliasing filter. The circuit and method provide for introducing time delay to the digital system at the low and mid range frequencies, and adding decreasing amounts of time delay at the high frequency ranges to produce an overall composite time delay for the digital system which is relatively constant over its operating frequency range. The delay equalizer used to achieve such delay compensation is made up of active delay equalizer sections which are non-interactive, and which are independently tunable in terms of each sections center frequency and Q. An active delay equalizer section with a second order bandpass transfer functions has been devised to achieve this capability. It is comprised of an operational amplifier having input resistance and feedback resistance connected to its inverting input and a twin-T network connected in its non-inverting input. The twin-T is a driven twin-T for variable Q, and provides a delay equalizer wherein the time delay of each section can readily be tailored to the designers requirements.

    摘要翻译： 提供电路和方法来补偿由系统抗混叠滤波器引入的数字音频系统的非线性延迟特性。 该电路和方法提供了在低频和中频范围向数字系统引入时间延迟，并且在高频范围内增加了减少的时间延迟量，以产生数字系统的整体复合时间延迟，该时间延迟相对于其相对恒定 工作频率范围。 用于实现这种延迟补偿的延迟均衡器由非交互式的有源延迟均衡器部分组成，并且可以根据每个部分的中心频率和Q独立地调节。具有二阶带通传递函数的有源延迟均衡器部分 已经设计出来实现这一功能。 它包括具有连接到其反相输入的输入电阻和反馈电阻的运算放大器和连接在其非反相输入端的双T网络。 双T是用于变量Q的驱动双T，并且提供延迟均衡器，其中每个部分的时间延迟可以容易地根据设计者的要求而定制。

    Horn speaker and method for producing low distortion sound
    7.
    发明授权
    Horn speaker and method for producing low distortion sound 失效
    喇叭和喇叭产生低失真声音的方法

    公开(公告)号：US4152552A

    公开(公告)日：1979-05-01

    申请号：US871708

    申请日：1978-01-23

    申请人： John D. Meyer

    发明人： John D. Meyer

    IPC分类号： G10K9/02 ,  G10K9/13 ,  H04R1/30 ,  H04R9/06

    CPC分类号： H04R1/30 ,  G10K9/13

    摘要： An acoustical horn speaker for producing low distortion sound comprised of a casing assembly having a voice coil gap and a magnetic source and return circuit for providing a constant magnetic field across the gap, a current-carrying voice coil disposed in said gap, and a voice diaphragm in rigid attachment with the voice coil, said voice diaphragm being suspended from the casing assembly by a relatively flexible, high compliance suspension member. An acoustical horn having a throat resistance sufficiently high to substantially dominate the radiation resistance of the diaphragm is air coupled at its throat end to the voice diaphragm suspended from said casing, while the compliance of the voice diaphragm suspension is relatively high such that in the presence of the dominating throat resistance of the horn the diaphragm vibratory movement is characterized by substantially force determinative excursions as opposed to substantially linear constant displacement excursions.A method of producing low distortion sound in a horn type speaker comprising the step of driving the speaker's diaphragm in a vibratory movement characterized by substantially force determinative excursions as opposed to substantially linear constant displacement excursions.

    摘要翻译： 一种用于产生低失真声音的声喇叭扬声器，包括具有音圈间隙的壳体组件和用于在间隙上提供恒定磁场的磁源和返回电路，设置在所述间隙中的载流音圈和声音 隔膜与音圈刚性连接，所述隔音板通过相对柔性的高顺应悬挂构件从壳体组件悬挂。 具有足够高的咽喉电阻以基本上支配隔膜的辐射电阻的声喇叭在其喉部端部与从所述壳体悬挂的声音隔膜空气耦合，而声膜悬浮液的顺应性相对较高，使得在存在 对于喇叭的主要喉咙阻力，振膜振动运动的特征在于基本上是力确定的偏移，而不是基本上线性的恒定位移偏移。

    Acoustically absorptive panel
    9.
    发明授权
    Acoustically absorptive panel 有权
    吸声板

    公开(公告)号：US08636104B2

    公开(公告)日：2014-01-28

    申请号：US13470167

    申请日：2012-05-11

    申请人： John D. Meyer ,  Helen Meyer ,  Marcy Wong ,  Deborah Lynne O'Grady ,  Pierre Germain

    发明人： John D. Meyer ,  Helen Meyer ,  Marcy Wong ,  Deborah Lynne O'Grady ,  Pierre Germain

    IPC分类号： E04B1/84

    CPC分类号： E04B1/8209 ,  E04B1/86 ,  E04B2001/8281 ,  E04B2001/8452 ,  E04B2001/8471

    摘要： An acoustically absorptive panel comprises a porous acoustical absorber having a planar configuration mounted on a support frame, an acoustically transparent front fabric stretch-mounted on the support frame and spaced from and in parallel alignment with the front face of the porous acoustical absorber and forming an airspace, the porous absorber, front fabric and forward air space acting as acoustical absorbing chamber capable of absorbing a greater range of sound frequencies than the porous acoustical absorber alone, the range of frequencies absorbed depending on the depth of the air space.

    摘要翻译： 声吸收面板包括具有安装在支撑框架上的平面构造的多孔吸声器，延伸安装在支撑框架上并与多孔吸声器的前表面间隔开并与之平行对准的声透明前织物，并形成 空气空间，作为吸声室的多孔吸收器，前织物和前空气空间能够吸收比单独的多孔吸声器更大范围的声频，根据空气空间的深度吸收的频率范围。

    ACOUSTICALLY ABSORPTIVE PANEL
    10.
    发明申请
    ACOUSTICALLY ABSORPTIVE PANEL 有权
    有吸引力的面板

    公开(公告)号：US20120285767A1

    公开(公告)日：2012-11-15

    申请号：US13470167

    申请日：2012-05-11

    申请人： John D. Meyer ,  Helen Meyer ,  Marcy Wong ,  Deborah Lynne O'Grady ,  Pierre Germain

    发明人： John D. Meyer ,  Helen Meyer ,  Marcy Wong ,  Deborah Lynne O'Grady ,  Pierre Germain

    IPC分类号： E04B1/82

    CPC分类号： E04B1/8209 ,  E04B1/86 ,  E04B2001/8281 ,  E04B2001/8452 ,  E04B2001/8471

    摘要： An acoustically absorptive panel comprises a porous acoustical absorber having a planar configuration mounted on a support frame, an acoustically transparent front fabric stretch-mounted on the support frame and spaced from and in parallel alignment with the front face of the porous acoustical absorber and forming an airspace, the porous absorber, front fabric and forward air space acting as acoustical absorbing chamber capable of absorbing a greater range of sound frequencies than the porous acoustical absorber alone, the range of frequencies absorbed depending on the depth of the air space.

    摘要翻译： 声吸收面板包括具有安装在支撑框架上的平面构造的多孔吸声器，延伸安装在支撑框架上并与多孔吸声器的前表面间隔开并与之平行对准的声透明前织物，并形成 空气空间，作为吸声室的多孔吸收器，前织物和前空气空间能够吸收比单独的多孔吸声器更大范围的声频，根据空气空间的深度吸收的频率范围。