公开(公告)号：US5210858A

公开(公告)日：1993-05-11

申请号：US422839

申请日：1989-10-17

申请人： Jan E. B. Jensen ,  Keith S. K. Lee ,  J. David Mulvenna ,  Keith B. Riley

发明人： Jan E. B. Jensen ,  Keith S. K. Lee ,  J. David Mulvenna ,  Keith B. Riley

IPC分类号： G06F1/12

CPC分类号： G06F1/12

摘要： A clocking control circuit for a computer system and method for receiving a microprocessor clock signal which drives a microprocessor and for supplying a support clock signal having a lower frequency. The support clock frequency drives support interface circuitry such as a peripheral controller, a CPU/memory controller, and a bus bridge interface, and thus causes the support interface circuitry to operate at a lower frequency than the microprocessor. The clocking control circuit ensures synchronization between the support clocking signal and the microprocessor clocking signal. The transmission of control signals between the microprocessor and support interface circuitry is controlled to ensure proper communications between the microprocessor and support circuitry.

公开(公告)号：US6044161A

公开(公告)日：2000-03-28

申请号：US195769

申请日：1998-11-18

申请人： Keith Lee

发明人： Keith Lee

IPC分类号： H04R5/02 ,  H04R5/00

CPC分类号： H04R5/023 ,  Y10S5/904

摘要： The invention is a pillow speaker for use as a combination headrest and sound delivery system for transmitting sounds, including music to a person's head. The pillow speaker comprises a pillow headrest having an upper surface for receiving and supporting a person's head. Extending downward from the upper surface is a lower body portion. The lower body portion is adapted for support from an exterior stable surface, the pillow speaker being constructed from a homogeneous flexible material. A pair of spaced apart loud speakers are mounted through the upper surface, within the lower body portion. The loud speakers include an exterior face for projecting sound outward from the pillow speaker, and an opposing rear face for projecting sound into and through the lower body portion. Importantly, the lower body portion of the pillow speaker comprises a plurality of large voids through which sound waves from the loud speakers can travel upwardly through the upper surface thereby reaching the listener from many directions.

摘要翻译： 本发明是一种用于组合头枕和声音传送系统的枕头扬声器，用于将声音传播到人的头部。 枕头扬声器包括具有用于接收和支撑人的头部的上表面的枕头头枕。 从上表面向下延伸的是下主体部分。 下身部分适于从外部稳定的表面支撑，枕头扬声器由均匀的柔性材料构成。 一对间隔开的扬声器通过上表面安装在下主体部分内。 扬声器包括用于从枕头扬声器向外突出声音的外表面和用于将声音突出并穿过下主体部分的相对的后表面。 重要的是，枕头扬声器的下身部分包括多个大的空隙，来自扬声器的声波可通过这些大空隙向上行进穿过上表面，从而从多个方向到达听者。