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1. 发明授权

US06886181B1 Extended distribution of ADSL signals 失效
标题翻译： ADSL信号扩展分布
公开(公告)号：US06886181B1
公开(公告)日：2005-04-26
申请号：US09612445
申请日：2000-07-07
申请人： David E. Dodds , Oliver Cruder , Mark Labbe
发明人： David E. Dodds , Oliver Cruder , Mark Labbe
IPC分类号： H04L25/49 , H04Q11/04 , H04N7/173
CPC分类号： H04L25/4908 , H04Q11/04 , H04Q2213/1301 , H04Q2213/13034 , H04Q2213/13039 , H04Q2213/1305 , H04Q2213/1309 , H04Q2213/13099 , H04Q2213/1319 , H04Q2213/13214 , H04Q2213/13291 , H04Q2213/13292 , H04Q2213/13305 , H04Q2213/1332 , H04Q2213/13322 , H04Q2213/13332 , H04Q2213/1336
摘要： A plurality of metallic telephone lines carrying both baseband POTS (plain old telephone service) and DSL (digital subscriber line) or ADSL (asymmetric digital subscriber line) signals originate at customer premises and pass through a common field cabinet enroute to a telephone central office. Baseband POTS signals flow in an undisturbed manner through the field cabinet and maintain the normal, highly reliable, communication between the subscriber premises and the central office telephone switch. At the field cabinet, DSL/ADSL signals are removed from the metallic telephone line and are then communicated between the field cabinet and the central office using fiber optic broadband transmission. Fiber optic transmission increases the allowed distance between the ADSL transceiver located at the customer location and the respective ADSL transceiver located in the telephone central office. In the optical fiber, DSL and ADSL signals are retained in their 2B1Q, DMT, QAM or CAP analog format and are simply frequency translated in the process of frequency division multiplex (FDM) transmission. The arrangement allows the provision of ADSL service to customers beyond the distance limit normally imposed by a completely metallic telephone line. It is understood that this arrangement is equally applicable to a variety of DSL (digital subscriber line) signals.
摘要翻译：携带基带POTS（普通老式电话业务）和DSL（数字用户线路）或ADSL（非对称数字用户线路）信号的多条金属电话线路始发于客户驻地，并通过公共场地机柜通往电话中心局。基带POTS信号以不受干扰的方式通过现场柜流动，并保持用户驻地与中心局电话交换机之间的正常，高度可靠的通信。在现场机柜中，DSL / ADSL信号从金属电话线路中移除，然后使用光纤宽带传输在现场柜和中心局之间进行通信。光纤传输增加了位于客户位置的ADSL收发器与位于电话中心局的相应ADSL收发器之间的允许距离。在光纤中，DSL和ADSL信号保留在2B1Q，DMT，QAM或CAP模拟格式中，并且在频分复用（FDM）传输过程中简单地进行频率转换。该安排允许向超过通常由完全金属电话线施加的距离限制的客户提供ADSL服务。应当理解，这种布置同样适用于各种DSL（数字用户线路）信号。

2. 发明授权

US06574798B1 System and controller for control and distribution of audio and video signals 失效
标题翻译：用于控制和分配音视频信号的系统和控制器
公开(公告)号：US06574798B1
公开(公告)日：2003-06-03
申请号：US09290901
申请日：1999-04-12
申请人： Graham C. Bradley , Alan Simpson , Shane D. Newton , Dennis E. Johns , Oliver Cruder
发明人： Graham C. Bradley , Alan Simpson , Shane D. Newton , Dennis E. Johns , Oliver Cruder
IPC分类号： H04N718
CPC分类号： H04N21/6334 , H04N7/165 , H04N7/17354 , H04N21/2143 , H04N21/2543 , H04N21/6187
摘要： The object of the invention is to provide a system and controller for distribution of audio/video signals on a pay-for-use basis, to a customer in a controlled environment such as a motel, hotel, bus station, bar or apartment building. The system includes a global authorization computer which transmits authorization to the customer over a telephone line. The customer has a telephone line/television control interface which receives the dual-tone multi-frequency authorization and allows the customer to select the authorized channel for a defined length of time. Without authorization, the telephone line/television control interface will deny the customer's attempt to tune his television to a pay-for-use channel. When the authorized time expires, the telephone line/television control interface tunes the customer's television to a non-pay-for-use channel. Additional options and embodiments are also presented.
摘要翻译：本发明的目的是提供一种系统和控制器，用于在付费用途的基础上向诸如汽车旅馆，酒店，公交车站，酒吧或公寓楼等受控环境中的客户分发音频/视频信号。该系统包括全球授权计算机，其通过电话线向客户传送授权。客户具有接收双音多频授权的电话线/电视控制接口，并允许客户在一定时间长度内选择授权频道。未经授权，电话线/电视控制接口将拒绝客户尝试将其电视调到付费用途频道。当授权时间到期时，电话线/电视控制接口将客户的电视调谐到不付费用途的频道。还提出了附加选项和实施例。

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