최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0638831 (2009-12-15) |
등록번호 | US-8488788 (2013-07-16) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 1 인용 특허 : 311 |
One embodiment of the invention relates to an apparatus comprising an input, a descrambler unit and a re-scrambler unit. The input is adapted to receive scrambled content. The descrambler unit is coupled to the input. The descrambler unit descrambles the scrambled content in order to recover unscram
One embodiment of the invention relates to an apparatus comprising an input, a descrambler unit and a re-scrambler unit. The input is adapted to receive scrambled content. The descrambler unit is coupled to the input. The descrambler unit descrambles the scrambled content in order to recover unscrambled content and concurrently routes both the unscrambled content over a first communication link for display on a display device and the unscrambled content over a second communication link. The re-scrambler unit is coupled to the second communication link. The re-scrambler unit is adapted to scramble the unscrambled content to produce re-scrambled content for transmission.
1. An apparatus comprising: a processor to control operations of the apparatus;an input that is to receive scrambled content;a descrambler unit coupled to the input and to the processor, the descrambler unit descrambles the scrambled content in order to recover unscrambled content and concurrently r
1. An apparatus comprising: a processor to control operations of the apparatus;an input that is to receive scrambled content;a descrambler unit coupled to the input and to the processor, the descrambler unit descrambles the scrambled content in order to recover unscrambled content and concurrently routes the unscrambled content over a first communication link for display on a display device and routes the unscrambled content over a second communication link, wherein the descrambler unit descrambles the scrambled content by producing a first key to descramble a first control word, and thereafter, using the first control word to descramble the scrambled content and recover the unscrambled content; anda re-scrambler unit coupled to the second communication link and to the processor, the re-scrambler unit to scramble the unscrambled content to produce re-scrambled content for transmission from the apparatus,wherein the re-scrambler unit scrambled the unscrambled content using information within an entitlement control message (ECM), the ECM being part of the program data including the scrambled content received by the input. 2. The apparatus of claim 1 being a conditional access unit. 3. The apparatus of claim 2 being implemented within a digital device that is coupled to a transmission medium for routing the re-scrambled content to an electronic device in communication with the transmission medium. 4. The apparatus of claim 1, further comprising a processor unit that receives packet identifier (PID) information identifying a location of the ECM within the program data, processes the ECM to derive a key that is used by the descrambler unit to descramble the scrambled content and recover the unscrambled content. 5. The apparatus of claim 1, wherein the re-scrambler unit scrambled the unscrambled content using information stored within memory implemented within the apparatus. 6. The apparatus of claim 1, wherein the re-scrambler unit scrambles the unscrambled content using a second control word to produce the re-scrambled content, and thereafter, scrambles the second control word using a second key. 7. The apparatus of claim 6, wherein the first control word is identical to the second control word. 8. The apparatus of claim 6, wherein the first key is identical to the second key. 9. A digital device comprising: a decoding unit; anda digital receiver coupled to the decoding unit, the digital receiver comprises: a processor to control operations of the digital receiver;a tuner adapted to receive an incoming digital bitstream,a demodulator unit coupled to the tuner and to the processor, the demodulator unit is to demodulate the digital bitstream to recover program data from the incoming digital bitstream, the program data including scrambled content, anda conditional access unit coupled to the demodulator unit and to the processor, the conditional access unit is to receive the program data from the demodulator unit and descramble the scrambled content to produce unscrambled content, the unscrambled content being routed via a first communication path for display on a display device and also being routed over a second communication path for re-scrambling prior to transmission from the conditional access unit,wherein the conditional access unit descrambles the scrambled content by producing a first key to descramble a first control word, and thereafter, using the first control word to descramble the scrambled content and recover the unscrambled content, andwherein the conditional access unit re-scrambles the unscrambled content using information within an entitlement control message (ECM), the ECM being part of the program data that includes the scrambled content. 10. The digital device of claim 9 being a television. 11. The digital device of claim 9, wherein the digital receiver further comprises a processor coupled to the tuner and the conditional access unit, the processor is to control (i) selection of a channel frequency by the tuner and (ii) descrambling by the conditional access unit. 12. The digital device of claim 11, wherein the processor of the digital receiver controls descrambling of the scrambled content by transmitting information that identifies a location of the entitlement control message (ECM) within the program data. 13. The digital device of claim 9, wherein the conditional access unit comprising: a descrambler unit coupled to the demodulator unit, the descrambler unit descrambles the scrambled content in order to produce the unscrambled content and concurrently routes the unscrambled content over the first communication path for display on the display device and routes the unscrambled content over the second communication path; anda re-scrambler unit coupled to the descrambler unit over the second communication path, the re-scrambler unit to scramble the unscrambled content to produce the re-scrambled content for transmission. 14. The digital device of claim 13, wherein the re-scrambler unit of the conditional access unit of the digital receiver scrambles the unscrambled content using information within the entitlement control message (ECM), the program data including both the ECM and the scrambled content. 15. The digital device of claim 13, wherein the conditional access unit of the digital receiver further comprises a processor that receives the program data and derives a key for use by the descrambler unit to descramble the scrambled content in the program data. 16. The digital device of claim 9, wherein the decoding unit to receive the unscrambled content and to decode the unscrambled content prior to display on the display device. 17. The digital device of claim 9 being in communication with the display device over a transmission medium. 18. A system adapted to receive an incoming digital bit stream from one or more service providers with the digital bitstream including program data, the system comprising: a transmission medium;a hard disk recording unit coupled to the transmission medium; anda digital device coupled to the transmission medium, the digital device comprises a decoding unit; anda digital receiver coupled to the decoding unit, the digital receiver comprises a processor to control operations of the digital receiver;a tuner adapted to receive the digital bitstream,a demodulator unit coupled to the tuner and to the processor, the demodulator unit is to demodulate the digital bitstream to recover the program data, the program data including scrambled content, anda conditional access unit coupled to the demodulator unit and to the processor, the conditional access unit is to receive and descramble the scrambled content to produce unscrambled content, the descrambled content being routed over both a first communication path and a second communication path, the descrambled content over the first communication path being routed to the decoding unit for decoding of the descrambled content and subsequently displayed while the descrambled content over the second communication path being re-scrambled and transmitted to the hard disk recording unit over the transmission medium,wherein the conditional access unit descrambles the scrambled content by producing a first key to descramble a first control word, and thereafter, using the first control word to descramble the scrambled content and recover the unscrambled content, andwherein the conditional access unit re-scrambles the unscrambled content using information within an entitlement control message (ECM), the ECM being part of the program data that includes the scrambled content. 19. The system of claim 18, wherein the digital device is a digital television.
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