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1. 发明授权

US4351983A Speech detector with variable threshold 失效
标题翻译：具有可变阈值的语音检测器
公开(公告)号：US4351983A
公开(公告)日：1982-09-28
申请号：US198504
申请日：1980-10-20
申请人： William G. Crouse , Charles R. Knox
发明人： William G. Crouse , Charles R. Knox
IPC分类号： G10L11/02 , H04B3/20 , H04J3/17 , G10L1/04 , H04B15/00
CPC分类号： G10L25/78 , H04B3/20 , H04J3/175
摘要： A speech activity detection circuit and method are described in which a digitized sample of the analog speech signal in a communications system is taken n times in a period of time t. The magnitude M of each sample is calculated and the largest value of M which is encountered over a given period t is stored as a peak magnitude M(t). This value is compared to a value M(t-1) which is the smallest value of M(t) from prior periods. The lesser of the two values is stored as the new value for M(t-1). The process is continued for i periods and at the end of the i.sup.th period, the value M(t-1) is multipled by a constant k and the product is stored as the threshold value for the next i periods of time t.
摘要翻译：描述了语音活动检测电路和方法，其中通信系统中的模拟语音信号的数字化样本在时间段t中被拍摄n次。计算每个样本的幅度M，并将在给定时段t内遇到的M的最大值存储为峰值幅度M（t）。将该值与从前一个周期的M（t）的最小值M（t-1）进行比较。两个值中的较小值存储为M（t-1）的新值。该过程在i个周期继续，并且在第i个周期结束时，将值M（t-1）乘以常数k，并将乘积存储为下一个i个时间段t的阈值。

2. 发明授权

US5630132A Method and apparatus for facilitating real-time and asynchronous loading and temporally-overlapping of modular multimedia software tasks in a multimedia data processing system 失效
标题翻译：用于促进多媒体数据处理系统中的模块化多媒体软件任务的实时和异步加载和时间重叠的方法和装置
公开(公告)号：US5630132A
公开(公告)日：1997-05-13
申请号：US449511
申请日：1995-05-23
申请人： Gary G. Allran , Donald E. Carmon , Fetchi Chen , Jose A. Eduartez , Charles R. Knox , William L. Lawton , Llewellyn B. Marshall , Nathan A. Mitchell , Malcolm C. Ware , Raymond W. Weeks , Charles R. Young
发明人： Gary G. Allran , Donald E. Carmon , Fetchi Chen , Jose A. Eduartez , Charles R. Knox , William L. Lawton , Llewellyn B. Marshall , Nathan A. Mitchell , Malcolm C. Ware , Raymond W. Weeks , Charles R. Young
IPC分类号： G06F9/46 , G06F9/50 , G06F15/16 , G06F15/177 , G06F17/30 , G06F3/00 , G06F13/00 , G06F17/00
CPC分类号： G06F17/30017
摘要： A data processing system for executing multimedia applications which interface with multimedia devices that consume or produce at least one of real-time and asynchronous streamed data includes a CPU for execution of one or more multimedia applications and a DSP for processing data including streamed data. A plurality of modular multimedia software tasks may be called by the multimedia application for execution in the DSP. A plurality of data communication modules are provided for linking selected ones of the software tasks with selected others of the software tasks, and linking selected multimedia devices with selected ones of the software tasks. Each of the communications modules allows continuous, real-time and unidirectional communication of streamed data. The modularity of the processing system defines an open architecture for real-time processing which allows additional modular multimedia tasks to be added to the software tasks and selectively linked to at least one of (a) selected ones of the software tasks, and (b) selected ones of the multimedia devices. A DSP manager is resident in the CPU which dynamically monitors resource allocation to allow at least one software task to be loaded and executed while at least one other software task is being executed by the DSP without interference with execution.
摘要翻译：用于执行消费或产生至少一个实时和异步流数据的多媒体设备的多媒体应用的数据处理系统包括用于执行一个或多个多媒体应用的CPU和用于处理包括流数据的数据的DSP。可以由多媒体应用程序调用多个模块化多媒体软件任务以在DSP中执行。提供了多个数据通信模块，用于将所选软件任务与所选软件任务中的其他任务相关联，以及将所选择的多媒体设备与选定的软件任务相关联。每个通信模块允许流式数据的连续，实时和单向通信。处理系统的模块化定义了用于实时处理的开放架构，其允许将附加的模块化多媒体任务添加到软件任务中，并且选择性地链接到（a）选定的软件任务中的至少一个，以及（b）所选择的多媒体设备。 DSP管理器驻留在CPU中，其动态地监视资源分配以允许加载和执行至少一个软件任务，同时至少一个其他软件任务由DSP执行而不干扰执行。

3. 发明授权

US5625845A System for facilitating continuous, real-time, unidirectional, and asynchronous intertask and end-device communication in a multimedia data processing system using open architecture data communication modules 失效
标题翻译：用于在使用开放架构数据通信模块的多媒体数据处理系统中促进连续，实时，单向和异步的任务和终端设备通信的系统
公开(公告)号：US5625845A
公开(公告)日：1997-04-29
申请号：US960976
申请日：1992-10-13
申请人： Gary G. Allran , Donald E. Carmon , Fetchi Chen , Jose A. Eduartez , Charles R. Knox , William W. Lawton , Llewellyn B. Marshall , Nathan A. Mitchell , Malcolm S. Ware , Raymond W. Weeks , Yoav Medan , Uzi Shvadron
发明人： Gary G. Allran , Donald E. Carmon , Fetchi Chen , Jose A. Eduartez , Charles R. Knox , William W. Lawton , Llewellyn B. Marshall , Nathan A. Mitchell , Malcolm S. Ware , Raymond W. Weeks , Yoav Medan , Uzi Shvadron
IPC分类号： H04L29/06 , H04L29/08 , G06F13/14 , G06F13/20
CPC分类号： H04L65/607 , H04L29/06 , H04L65/608 , H04L29/06027 , H04L69/32
摘要： A data processing system is provided for executing multimedia applications which interface with multimedia end devices that consume or produce at least one of (a) real-time and (b) asynchronous streamed data. The data processing system includes a central processing unit for data processing operations including execution of the multimedia application, a digital signal processor for processing data including the streamed data, and a plurality of modular components which cooperate to provide a substantially open architecture. The plurality of modular components include a plurality of modular multimedia software tasks which are executable by the digital signal processor and which may be called by the multimedia application for execution in the digital signal processor, as well as a plurality of data communication modules for linking selected ones of the plurality of modular multimedia software tasks with selected others of the plurality of modular multimedia software tasks, and for linking selected multimedia end devices with selected ones of the plurality of modular multimedia software tasks. Each of the plurality of data communication modules allows continuous, real-time and unidirectional communication of streamed data. The enhanced connectivity of the modular approach for the multimedia data processing system allows additional modular multimedia software tasks to be added to the plurality of modular multimedia software tasks and selectively linked to selected ones of the plurality of modular multimedia software tasks and selected ones of the multimedia end devices.
摘要翻译：提供了一种数据处理系统，用于执行与多媒体终端设备接口的多媒体应用程序，该多媒体终端设备消耗或产生（a）实时和（b）异步流数据中的至少一个。数据处理系统包括用于包括多媒体应用的执行的数据处理操作的中央处理单元，用于处理包括流传输的数据的数据的数字信号处理器，以及多个模块化组件，其协作以提供基本上开放的架构。多个模块化组件包括多个模块化多媒体软件任务，这些任务可由数字信号处理器执行，并且可由多媒体应用程序调用以在数字信号处理器中执行，以及多个用于链接所选择的数据通信模块所述多个模块化多媒体软件任务中的多个模块化多媒体软件任务中的一个与所选择的多个模块化多媒体软件任务中的其他任务相关联，并且用于将所选择的多媒体终端设备与多个模块化多媒体软件任务中的所选择的多个软多个数据通信模块中的每一个允许流式数据的连续的，实时的和单向的通信。用于多媒体数据处理系统的模块化方法的增强的连接性允许将附加的模块化多媒体软件任务添加到多个模块化多媒体软件任务中，并且选择性地链接到多个模块化多媒体软件任务中的选定模块多媒体软件任务和多媒体终端设备。

4. 发明授权

US5440740A System and method for managing devices on multiple digital signal processors 失效
标题翻译：用于管理多个数字信号处理器上的设备的系统和方法
公开(公告)号：US5440740A
公开(公告)日：1995-08-08
申请号：US959862
申请日：1992-10-13
申请人： Fetchi Chen , Jose A. Eduartez , Charles R. Knox , Ronald J. Lisle , Raymond W. Weeks
发明人： Fetchi Chen , Jose A. Eduartez , Charles R. Knox , Ronald J. Lisle , Raymond W. Weeks
IPC分类号： G06F9/50 , G06F13/00
CPC分类号： G06F9/5011 , G06F9/545
摘要： A centralized digital signal processor resource manager acquires through software techniques, configuration and related data for multimedia hardware devices from BIOS device drivers interposed to functionally insulate the resource manager from hardware device specific information. The resource manager manages hardware devices in a multiple DSP environment using a unique software based hardware device identification scheme to identify and manage the location and availability of each hardware device.
摘要翻译：集中式数字信号处理器资源管理器通过软件技术，从BIOS设备驱动器中获取多媒体硬件设备的配置和相关数据，将功能上的资源管理器与硬件设备特定信息隔离。资源管理器使用独特的基于软件的硬件设备识别方案管理多DSP环境中的硬件设备，以识别和管理每个硬件设备的位置和可用性。

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