Channel protocol for IEEE 1394 data transmission
    1.
    发明授权
    Channel protocol for IEEE 1394 data transmission 失效
    IEEE 1394数据传输通道协议

    公开(公告)号:US07013354B1

    公开(公告)日:2006-03-14

    申请号:US09166488

    申请日:1998-10-05

    IPC分类号: F06F13/42

    CPC分类号: G06F13/387

    摘要: A system for transmitting and receiving data formatted in IEEE 1394 standard between devices using a same IEEE 1394 broadcast channel includes a CPU interfaced to a bus, a first 1394 interface connected to the bus via a first physical and link layers, and a second 1394 interface connected to the bus via a second physical and link layer. The CPU is configured for 1) receiving data from the bus, prefixing a header to the received data, and retransmitting the received data with the prefixed header onto the bus; and 2) receiving data prefixed with a header, interpreting the header to identify which of the first or second interfaces should receive the data, and transmitting the data over the bus to the identified 1394 interface.

    摘要翻译: 用于使用相同的IEEE 1394广播信道在设备之间发送和接收以IEEE 1394标准格式化的数据的系统包括与总线接口的CPU,经由第一物理层和链路层连接到总线的第一1394接口和第二1394接口 通过第二个物理和链路层连接到总线。 CPU配置为:1)从总线接收数据,将头部前缀到接收的数据,并将接收到的带有前缀标头的数据重传到总线上; 以及2)接收以标题为前缀的数据,解释该标题以识别第一或第二接口中的哪一个应该接收数据,以及通过总线将数据发送到所识别的1394接口。

    Digital video network interface
    2.
    发明授权
    Digital video network interface 失效
    数字视频网络接口

    公开(公告)号:US06438604B1

    公开(公告)日:2002-08-20

    申请号:US09166487

    申请日:1998-10-05

    IPC分类号: G06F1300

    摘要: A digital video network interface for transferring isochronous video data over an asynchronous local area network, including an isochronous interface for transmitting digital video data isochronously, a memory comprising first and second buffers for storing the isochronous video data, a network interface for transmitting video data from either the first or second buffers over the asynchronous local area network, and a memory buffer manager for controlling the output of the video data over the asynchronous local area network and for controlling the input/output of video data into/from the first or second buffers, wherein, when either the first or second buffers is filled with video data, the memory buffer manager shifts the input of data into an empty buffer and begins outputting video data to the asynchronous local area network from a filled buffer, upon receiving access to the local area network. Complementary ones of such video network interfaces may be provided on a network so as to permit one-way video streaming (to one or more receiving sites) or two-way video conferencing with network interfaces operating in full-duplex mode.

    摘要翻译: 一种用于通过异步局域网传输同步视频数据的数字视频网络接口,包括用于同步地传输数字视频数据的同步接口,包括用于存储同步视频数据的第一和第二缓冲器的存储器,用于从 无论是在异步局域网上的第一或第二缓冲器,以及存储器缓冲管理器,用于控制异步局域网上的视频数据的输出,并用于控制视频数据输入/输出到第一或第二缓冲器 ,其中当所述第一或第二缓冲器中的任何一个被视频数据填充时,所述存储器缓冲器管理器将所述数据的输入移动到空的缓冲器中,并且当接收到所述第一或第二缓冲器的访问时,开始从填充的缓冲器向所述异步局域网输出视频数据 局域网。 可以在网络上提供这些视频网络接口的补充,以允许以全双工模式操作的网络接口进行单向视频流(到一个或多个接收站点)或双向视频会议。

    Arbitration device for arbitrating access requests from first and second
processors having different first and second clocks
    3.
    发明授权
    Arbitration device for arbitrating access requests from first and second processors having different first and second clocks 失效
    用于仲裁来自具有不同的第一和第二时钟的第一和第二处理器的访问请求的仲裁设备

    公开(公告)号:US5557783A

    公开(公告)日:1996-09-17

    申请号:US336056

    申请日:1994-11-04

    CPC分类号: G06F13/364

    摘要: An arbitration device for shared RAM which arbitrates between first and second requests from first and second processors having respectively different first and second clocks and bus widths which may differ from that of shared RAM. A synchronizer synchronizes the first access request to the second clock so as to obtain clock-synchronized access requests, one of the clock-synchronized access requests is delayed by a fractional part of the second clock so as to yield time-offset access requests, and a hold-off circuit grants access to a first-to-arrive time-offset access request and holds off processing of a second-to arrive time-offset access request until processing of the first access request is complete. A shared RAM interface, responsive to access grant signals from the hold off circuit, gives access to the shared RAM in correspondence to the access grant signal. The shared RAM interface includes a strobe generator for generating upper and lower strobe signals for strobing upper and lower parts of the differently-widthed bus onto shared RAM.

    摘要翻译: 一种用于共享RAM的仲裁装置,其在来自具有不同于共享RAM的第一和第二时钟以及总线宽度的第一和第二处理器的第一和第二请求之间进行仲裁。 同步器将第一访问请求同步到第二时钟,以获得时钟同步的访问请求,其中一个时钟同步的访问请求被延迟第二时钟的小数部分,以便产生时间偏移的访问请求,以及 保持电路允许对第一到达时间偏移接入请求的接入,并且停止第二到达时间偏移接入请求的处理,直到第一接入请求的处理完成。 共享RAM接口响应来自保持断开电路的访问授权信号,根据访问授权信号给予对共享RAM的访问。 共享RAM接口包括选通发生器,用于产生上和下选通信号,用于将不同加宽总线的上部和下部选通到共享RAM上。

    Two-line telephone controller with hold feature
    4.
    发明授权
    Two-line telephone controller with hold feature 失效
    具有保持功能的双线电话控制器

    公开(公告)号:US5960065A

    公开(公告)日:1999-09-28

    申请号:US615777

    申请日:1996-03-14

    摘要: In a two-line telephone controller which includes a line select switch which operates complementarily to a force busy relay that allows an unselected telephone line to be forced to a busy state, a method for using the force busy relay also to place an active line on hold. The method includes detecting an incoming call on an inactive line, switching the line select switch to the inactive line, receiving an instruction to place the active line on hold, and responding to the hold instruction by closing an off-hook relay so as to connect the force busy switch across the active telephone line, opening a first handset select switch for the active telephone line, and closing a second handset select switch so as to select the incoming call on the ringing line. Because the force busy switch is connected across the formerly-active telephone line, loop current is maintained, thereby placing and maintaining the formerly-active call on hold.

    摘要翻译: 在一个双线电话控制器中,包括一个线路选择开关,该线路选择开关与强制忙继电器互补地运行,该强制忙继电器允许未选择的电话线被强制为忙状态,使用强制忙继电器的方法也可以将有效线路置于 保持。 该方法包括检测不活动线路上的来电,将线路选择开关切换到不活动线路,接收将活动线路置于保持状态的指令,并通过关闭摘机中继器来响应保持指令,以便连接 通过有效电话线的力量忙开关,打开用于有效电话线的第一手机选择开关,并且关闭第二手机选择开关,以便在振铃线上选择来话呼叫。 由于强制忙开关连接在以前有效的电话线路上,因此保持环路电流,从而将以前的主动呼叫置于保持状态。

    Communication control board with audio functions
    5.
    发明授权
    Communication control board with audio functions 失效
    具有音频功能的通讯控制板

    公开(公告)号:US5802150A

    公开(公告)日:1998-09-01

    申请号:US341165

    申请日:1994-11-16

    摘要: A communications control board, has, provided on a single board, an arrangement for performing standard modem/facsimile/telephone control functions as well as circuitry for performing functions, such as audio play and audio-line input and output functions. In one embodiment, a soundboard may be provided with text-to-speech control functions in conjunction with the single-board controller.

    摘要翻译: 通信控制板在单板上提供用于执行标准调制解调器/传真/电话控制功能的装置以及用于执行诸如音频播放和音频线输入和输出功能的功能的电路。 在一个实施例中,音板可以与单板控制器一起提供文本到语音控制功能。

    Two-line telephone controller
    6.
    发明授权
    Two-line telephone controller 失效
    双线电话控制器

    公开(公告)号:US5515423A

    公开(公告)日:1996-05-07

    申请号:US160824

    申请日:1993-12-03

    摘要: A computer-controlled communication board which includes a data access arrangement which functions as an intermediary between multiple telephone lines, a data communication device such as a fax/modem/voice chipset, and a standard telephone handset. The data access arrangement has a line select switch which switchably connects one of the multiple telephone lines to the data communication device via a single transformer and associated 2/4 converter. Off-hook switches are provided for each telephone line so that the data communication device can cause the selected telephone line to go off-hook. Likewise, ring detectors are provided for each telephone line so that the data communication device can detect which of those lines is ringing. Telephone handset switches may be provided for each telephone line so that the telephone handset may be switchably connected to any one of the multiple telephone lines. The data access arrangement may be configured so that unused lines appear "busy" to incoming calls, or it may be configured in a voice local mode in which the telephone handset may be used for play out and recording of audio information.

    摘要翻译: 一种计算机控制的通信板,包括用作多个电话线之间的中介的数据访问装置,诸如传真/调制解调器/语音芯片组的数据通信设备和标准电话手机。 数据访问装置具有线选择开关,其通过单个变压器和相关联的2/4转换器将多个电话线之一可切换地连接到数据通信设备。 为每个电话线提供摘机开关,使得数据通信设备可以使所选择的电话线摘机。 同样地,为每个电话线提供环形探测器,使得数据通信设备可以检测哪些线路正在振铃。 可以为每个电话线路提供电话手机交换机,使得电话手机可以可切换地连接到多条电话线路中的任何一条。 数据访问装置可以被配置为使得未使用的线路对于来电显示“忙”,或者可以配置在语音本地模式中,其中电话手机可以用于播放和记录音频信息。