Ep0856994a2

Ep0856994a2




A individual expert in the artwork will derive many methods from rationalization above and the three examples discussed beneath. Figures 6b and 6c are schematics of the elements of other embodiments for a digital cable headend. DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic of an current analog cable television delivery system. It is an object of this invention to supply a cable headend that decrypts indicators received in various encryption codecs and encrypts all alerts transmitted to viewer properties into one encryption format. A number of analytical and statistical strategies could additionally be used to determine the priority of the

To learn more about visit this website visit why not find out more

FIFOs 156 for sequencing. These instructions will embody which video indicators ought to be selected and different data such https://moesport.com/tag/ทาง-เข้า-ufa as https://moesport.com/tag/www-mm88bet the kinds of alerts , whether the video is encrypted and the encryption methodology used, etc.

Each 8 bits of data acquired is compared utilizing the handle examine 164' (or different identifier or address verify 164') to https://moesport.com/tag/www-ufapink-com addresses saved within the address check 164'. If there might be an tackle match, the information of that exact packet is routed to the suitable FIFO 156 which is handling knowledge for that address. In other words, unneeded video/audio bit streams usually are not routed to any FIFO 156 but are merely ignored. The logic block 153 displays all of the FIFO 156 activity and according to a set algorithm, will management the output gates 158.

The deciding on perform components include the demultiplexer one hundred forty four and digital logic components 146, which receive directions from the Control CPU ninety. The serializer 148 performs the final step of the Combiner 104, combining the sign. A desired sports program may be obtained at the cable headend forty two from a transponder fifty two designated for sports activities. The demultiplexer 120 assigned to the sports activities transponder is instructed to select the specified sports program. The sports activities program is then decoded into analog format and processed https://moesport.com/tag/z8-com-2 by way of an analog modulator 134. The analog modulator 134 may then place this system into 6 MHz of accessible bandwidth (e.g. between 544 MHz to 550 MHz) on the concatenated cable system 50.

If the second threshold level just isn't reached, then the subroutine 224 checks whether the primary threshold degree is reached . If the primary threshold level remains to be surpassed, then the subroutine 224 begins anew and appears for a FIFO 156 with a fantastic MPEG packet to be deleted. In this way, the FIFO control block 154 can hold track of both the input and the output circulate to every FIFO 156. Figures 9a and 9b show a extra detailed schematic of 1 hardware implementation of the Combiner 104.

Each vendor uses scrambling techniques that are incompatible with the every different vendor. There are two major cable industry leaders in scrambling codecs, Scientific-Atlanta, Inc. , 4386 Park Drive, Norcross, GA and General Instrument Corporation, Gerald Communications Division , 2200 Byberry Road, Hatboro, PA 19040. The Control CPU 90 of figure 6a could also be instructed by a distant website (e.g., a nationwide site) via a modem 116 or comparable connection. Alternatively, as a substitute of enabling the outputs of the demultiplexers a hundred and twenty, the inputs of the Combiner 104 could also be chosen by the Control CPU ninety. By enabling or choosing multiplexer outputs, the Control CPU ninety is able to management which tv programs https://moesport.com/tag/www-818king-com are combined and transmitted to the viewers.

To accomplish this task, the Control CPU ninety will obtain electrical signals from either the control FIFO 154 or every individual FIFO 156. These indicators shall be analyzed and a willpower on the level of every FIFO 156 is made. Following this evaluation, the Control CPU ninety will determine if anyone FIFO 156 exceeds the primary threshold level set on share of capability crammed (e.g., 75% filled) . If one of many FIFOs 156 exceeds the primary threshold stage of capacity crammed, then an overflow condition exists.

What is required is a cable headend that can mix various digital video/audio

To read more about Your Domain Name visit recommended you read

indicators to create tiered program offerings for viewers. What is needed is a cable headend which receives multiple video/audio program signals from a single satellite tv for pc transponder. In addition, today's cable tv supply methods carry signals that are scrambled for security reasons.

Using the info signal from the transponders 52 and the native avail info eighty four, the Control CPU 90 proven generates a digital data sign referred to as the set high terminal management data stream . The set top terminal management information stream is modulated and likewise despatched to the set prime terminals fifty eight. A number of info to help the set top terminal 58 could also be sent on this control info stream . For methods with set prime terminals which may be unable to make use of the STTCIS, this information sign is unnecessary.

Figure 9a shows the specific hardware of the Combiner 104 in an embodiment which makes use of IRDs 86 and a QAM 102. Figure 9b shows the output control logic one hundred ninety which may be situated remotely from the Combiner 104. In the preferred embodiment, the output control logic a hundred ninety is positioned between the Control CPU 90 and Combiner 104. "Global patent litigation dataset” by Darts-ip is licensed underneath a Creative Commons Attribution 4.0 International License.

If the central site has requested a mix that is beyond the potential of the Combiner 104 equipment located at that cable headend forty two, a notification sign might be sent to the central website requesting new information. The combination of video feeds may be inappropriate for a selection of reasons, including too many video feeds or too many video packets to mix . Although just one verification check is shown for the knowledge obtained from the central web site, those skilled within the artwork will notice that many verification checks on the information from the central web site could additionally be conducted. Following verification, notification or reject signals could also be despatched to the central web site. COMBINER SYSTEM HARDWARE Figure 7 reveals a more detailed view of 1 embodiment of a cable headend 42 with Combiner 104. Specifically, Figure 7 depicts the Combiner's 104 major elements 140, which embrace elements that present a selecting perform and other parts 142 that perform signal combining.

In explicit, figure 3b exhibits a modular answer to the issue of sending completely different indicators down totally different concatenated cable systems. Figure 12 is a schematic for one embodiment of a digital cable headend for the advanced program supply system proven in figure 11. Figure 3b is a schematic of a modular digital cable headend system servicing two concatenated cable methods.

Priority three television programming is only utilized by the largest capability television system sixty four which is able to dealing with all three elements -- Priority one, two and three programming . BANDWIDTH ALLOCATION Figure 3a depicts a cable headend forty two receiving and routing television programming. More specifically, it reveals a cable headend receiving a larger quantity of tv programming than needed and routing the proper tv programs to the right portion of the cable techniques. The digital cable headend of the present invention can carry out bandwidth allocation in several ways.

To learn more about look these up visit Related Site

To read more about more info here visit Resources