MXPA99005753A - Control of consumer recording equipment - Google Patents

Abstract

An apparatus (100) for processing a source(101A) of compressed digital video and control data occurring in transport packets. The apparatus (100) comprises a deriving means (104) responsive to the source (101A) for deriving copy control data (104A) from the transport packets. A generating means (105) responsive to the copy control data (104A) for generating a copy control word (CC). A forming means (108) for forming a superpacket (SP) including the copy control word (CC) and the transport packets (TP).

Description

CONTROL OF CONSUMER RECORDING EQUIPMENT This invention relates to a busbar interface system / apparatus for coupling audio, video and digital data processing systems, and in particular for coupling signals for the control of recording devices.

BACKGROUND OF THE INVENTION The arrival of digitally compressed audio and video transmission systems, such as the Grand Alliance HDTV system for terrestrial high-definition television transmission, or the direct-broadcast satellite TV system DirecTV® which currently employs the system NTSC, show that you can virtually bring audio and video signals with study quality to an observer audience. However, these signals with exemplary quality degrade instantly when the time is out of phase to see them later by means of analog recording formats currently available to the consumer, for example, VHS, S-VHS, 8 mm and Hi 8. The introduction of digital quality video recording cameras for the consumer, for example DVC, demonstrates that digital quality recording for the consumer can produce sound and image quality virtually indistinguishable from the original material. Others are emerging consumer products, for example D-VHS, video disc, DVD, digital cameras, scanners and computers with digital processing capabilities that allow dubbing, copying, replication or editing of multiple generation digital signals, leaving the quality of sound and image essentially the same as the original recorded source. The high levels of quality and technical performance given by this digital equipment for the consumer raises concerns regarding the violation of copyright by unauthorized copying. The proposed legislation in the form of the "HOME VIDEO RECORDING LAW of 1996" requires digital audio / video signals to include copy protection information to allow the copyright owner to determine and control the size of the auditorium who sees the material protected by copyright. The implementation of copy protection requires that copy control information be included with or within the protected material and that it be maintained during all subsequent processing procedures. In addition, this control information against the copy may be modified as a result of subsequent processing to retain control of the intellectual property of the copyright owner. EP A 0 498 617 discloses a digital recording device that extracts copy control data from an input data stream to control recording and modify data from control of copies after the recording. EP A 0 717564 discloses another digital recording device which accepts an MPEG bitstream containing a PES header which includes copyright data and copy control. The recording device decodes and decrypts the copy prevention information and in response to them cryptically encodes the bitstream for its recording. A second embodiment described in EP 0 574 892 is directed to a copy control by means of information superimposed over a horizontal period of the vertical space interval of an analog video signal.

SUMMARY OF THE INVENTION In an inventive mode, an apparatus processes a source of compressed digital audio, video and control data that is presented in transport packets. The apparatus comprises: a derivation means responsive to the source for deriving copy control data from the transport packets; a generating means that responds to the copy control data to generate a copy control word; a training means for forming a super package comprising the control word of the copy and the transport packets. In another inventive embodiment the copy control information is derived from a source packaged and processed to be coupled via a data bus control. In another inventive embodiment a replication device receives the transport packet formatted with copy control header and in response to the copy control information initiates replication and modifies the copy control header to preclude any other copy of the copy package. Formatted transport and copy control header. In yet another inventive mode a replication device implements commands contained in the control information only if the copy control information of the two sources corresponds. In still another inventive modality a replication device periodically receives control information of copy of a control data bus and, in the absence of periodic reception, supposes a state of prohibited copy. Another inventive mode controls a replication device that responds to a copy control information such as a copy is made but a simultaneous transport packet decodes it to make it impossible to see it.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 illustrates an exemplary digital receiver and a digital replicator employing various inventive modalities. Figures 2A and 2B illustrate the inventive embodiments for bus-bar communication employing a superpackage. Figures 3A and 3B illustrate digital sources connected by exemplary busbars and replica systems that include inventive modalities. Figure 4 illustrates an exemplary digital signal source and an analog replication device that includes the inventive arrangements.

Detailed Description The Grand Alliance HDTV ground system and the DirecTV® system use an MPEG standard and an MPEG standard respectively to transmit program material in transport packages. Transport packages can contain multiple programs that are multiplexed together and processed for transmission. In the receiver the error correction is carried out and a program packet stream determined for the user is separated and assembled from the multiplexed program mix. The ongoing development of digital audio and video products for consumers, computers, image-forming devices, etc., required a simple, low-cost means for their interconnection. For example, a bus in series has been standardized by the IEEE and is known as 1394. The 1394 standard multiplexes a variety of audio, video, MIDI, compressed digital, and device control commands onto two twisted pair drivers. A third conductor pair provides a conductor for ground power supply providing the second conductor an optional coupling for insertion or extraction of energy. The devices can be interconnected in a daisy chain fashion using a small, thin, flexible cable terminated with standardized connectors. An example of a simplified busbar is shown in the block diagram of Figure 1. The simplified busbar provides the coupling of audio, video and digital control transport streams in series and is described in the US Patent application. United States of America with Serial Number: 08 / 292,908 and PCT applications with serial numbers PCT / US96 / 07581, and PCT / US96 / 07391. However, a simplified description of the system depicted in Figure 1 is as follows. An integrated receiver decoder or IRD 100 receives a radio frequency signal from, for example, antenna 10 or a cable source, not shown. The radio frequency signal is tuned by the tuner 11 to receive a program selected by the user. The output signal of the tuner is coupled to the packet source block 101, which is demodulated and corrects the error of the modulated transmission signal. An output of the source of the packet 101 is coupled to the block 102 which demultiplexes or separates the program transport current (TP) selected by the user from other program streams present in the current of received packages. The transport stream selected by the user can be coupled to MPEG decoding by decoder 109 which generates audio and video signals for visual display 110. The transport stream of the program selected by the demultiplexed user can be formatted in block 108. , for example as a super package, as illustrated in Figure 2B. A superpacket comprises the transport stream packets selected by the user TP and a control data header. Figure 2B shows an exemplary 32-bit control data header which includes a time stamp TS, bits of copy control data, bits that can determine the recording playback speed, and two reserved bits for future use. The superpack SP is coupled via a busbar of audio, video and data 500 to a recording or replication device 200. The data bus 500 is received via the interface port 102 and is coupled to a demultiplexer 30 which reads the Exemplary control data. The copy control data bits can assess a number of possible control conditions, for example, unlimited copying, replication of a single copy or forbidden copying. In this way to achieve the required control conditions, the copy control data bits are coupled with the controller 208 which is controllably coupled with various replicator sub-systems.

A detailed description of various control aspects resulting from the copy control conditions is provided below. SP or SPa superpacks are coupled for recording, replication or copy processing in block 206A. Superpacks can be processed for error detection and correction and can also be transformed to modify their spectral energy content. A stream of output signals from the block 206A is coupled to form the copy 210 in the medium 299, for example a magnetizable surface. When a recorder 200 is operated in a playback mode, the copy 210 is transduced from the medium 299 and coupled to the player processor 206B. The reproducing processor 206B essentially reverses any recorded signal that it encodes and can detect correcting errors in the copy 210 resulting from the recording medium 299. The corrected PBSP error signal is coupled to the demultiplexer 31 and the superpacket 32 restorer. The header of the data control of the PBSP player superpacket is read by the demultiplexer 31 and coupled in several places. The time stamp of the header PBTS is coupled to the clock controller 39 where the time stamp value is used to determine the timing of the output packet or the initiation of an RSP output super packet of block 32. The restored super packet, replayed, it is coupled to the interface 102 for transmission to the integrated receiver decoder IRD 100 via an AVD 500 bus. It is assumed that the signal to be communicated is provided in the form of transport packets such as those defined in the system layer of the MPEG2 video standard, or the transport layer of the Grand Alliance signal format. In both the MPEG2 video standard and the transport layer of the Grand Alliance signal format, the transport packets are associated with time stamps or PCR that allow the resynchronization of the clocks of local systems with the clock frequency of the local system . Therefore, having synchronized the clock generator of the local system, the transport packets can be processed to remove tremors or time disturbances that can accumulate, for example, during the transmission by means of switched busbar structures and processing, and so on. In Figure 1 the clock reference of the PCR program is read by the demultiplexer 102 and coupled to synchronize the oscillator 17, which has a nominal frequency of 27 MHz. The MPEG standard allows an intermittent occurrence of the program clock reference PCR inside the transport stream. The resulting intermittent oscillator synchronization is completely adequate to allow MPEG decoding. However, the transport packet stream may be subject to time base modulation, for example resulting from the mobile transmission, causing signal flaring and multiple trajectory transmission reflections. The time base modulation can also be the result of recording and reproducing interferences and instabilities mechanically. These variations or errors in the time base may exceed the range of oscillator synchronization or the rate of change, therefore each transport package is repacked to form a super package containing a specific time stamp for the occurrence of the transport package containing. The provision of a time stamp for each transport packet allows unwanted time base modulation correction and facilitates the delivery of each transport packet to the decoder in substantially the same time as the transport packet would have been decoded if there were no been recorded I was disturbed. Figure 2B illustrates a superpacket comprising a 32-bit control data header and a transport packet of either 188 bytes or 140 bytes representing respectively the signals of the GA or DirecTV® systems. The control data header includes a time stamp of 20 bits, 6 bits of copy control data, a 4-bit player speed code and 2 bits of reserved data. The time stamp is a sample of an oscillator account taken at a specific time, for example, in the occurrence of a reference clock pulse FC (frame-clock), and as described, can be used for the correction of chronometer tremors and printed disturbances in each superpacket. The player speed code can be used by a recording device to determine the speed at which a particular signal will be recorded or played. The player speed is encoded in relation to the recording speed and read and used by any recording device connected to the AVD bus. The purpose of the player speed code is to allow recording at a relatively high bitrate and play at a normal bit rate. The copy control data comprises three 2-bit words that provide digital copy control or CGMS-D, analog copy control or CGMS-A and control information for an analog APS system developed by MACROVISION®. Table 1 shows the assignment and function of six bits of copy control data. TABLE 1 Several combinations of equipment systems can be considered, for example analog or digital recording players, this equipment can be present by deferring the connection and control capabilities, and in addition the operation must be considered in recording and playback modes. These different combinations can be widely separated into several exemplary systems. Figure 1 depicts a first exemplary system in which a digital receiver and visual display are coupled to a digital recorder by a simple data bus configuration. However, regardless of the configuration of the data bus, the copy control or CGMS data must be recovered or demultiplexed from the selected packet stream and formatted to be coupled to the recording or replication device. The recorder or the replicator must demultiplex or retrieve the formatted copy control bits and implement the control function specified herein. In Figure 1 the copy control data is demultiplexed from the transport packet stream selected in block 104 and coupled with a copy control word generator in block 105. Superpacks are formatted in block 108 which combines the selected transport packet stream with the copy control word of block 105, a time stamp of block 107 and a player speed code of block 106. As already described the 6-bit copy control word provides control of both digital and analog systems. Therefore in the first exemplary system of Figure 1, the demultiplexer block 30 of the digital recorder 200, extracts the digital copy control or commands CGMS-D present as bits 6 and 7 of the superpacket header. Bits 6 and 7 define three states, namely, unlimited copying, not copying or only one allowed copy. The separated bits 6 and 7 are coupled to control the block 208 which is controllably coupled to several subsystems of the recorder 200. Clearly, if the bits 6 and 7 of the CGMS-D indicate a first state which allows unlimited copying , no control action is required by controller 208 and copy 210 may be formed in medium 299. When bits 6 and 7 of CGMS-D indicate a second state which prohibits copying, controller 208 may disable the processor of registration 206A by means of the INH control line. In addition, an electronic signal path or EE mode, through the recorder can be inhibited in response to the prohibition of copying by bits 6 and 7. The controller 208 can also cause the generation of a screen display message indicating the Prohibited recording status of the program selected by the user. The on-screen display message may be generated within the recorder 200 or may be caused to be generated within the IRD 100. Advantageously, the integrated receiver decoder 100 may demultiplex and interprit bits 6 and 7 of the CGMS-D. Thus, when a prohibited recording status is required, the coupling of transport packages or Superpackets to the serial data bus can be inhibited within the IRD 100. In addition the interpreted state of the 6 copy control bits can be presented for user information as a screen display. The third state defined by bits 6 and 7, namely a permitted copy, requires that the copy control bits are amended before or concurrent with the replica by the recorder 200. In this way the command bit 7 CGMS-D 7 of the superpacket header is changed, as indicated in Table 1, from logical 0 to logical 1. In FIG. 1 the superpacket SP of the demultiplexer 30 is coupled with the RESET CC (RESET CC) block 204 which amends the state logic of bit 7 in response to the control signal RS generated by controller 208. Therefore, a single copy 210 of the exemplary super packet is replicated, which contains a CGMS-D command that prohibits any other copy. In another advantageous control situation the copyright owner can establish a differential price structure where an exemplary live event can be priced higher by watching it live than by a view with time traveled, or time not real resulting from a recording of the live event. Thus, bits 6 and 7 of the CGMS-D may indicate the third state allowing a single copy, with the decoder inhibit signaled by, for example, at least one bit within the velocity area of the decoder. reproduction or reserved data bits. However, other copying or copyright control data resident in the stream of the program selected by the users may be demultiplexed in, for example, block 104. This filtered or demultiplexed control data of block 104 may be coupled to controller 111 to inhibit the cryptographic decoding by block 103, and decode at 109, the signal received for the immediate view, in real time in the visual display 99. Furthermore, the controller 111 can communicate this command to inhibit view via the control conductor CRL from the data bus 500 to the 200RP recorder. The control commands of the data bus 500 are coupled to the controller 208 which inhibits, via the INHPB signal, electronic or EE coupling of the input packet signal to the output of the recorder. The reproduction and generation of output data from the recorded copy is facilitated, even if the copy comprises transport packets containing the built-in inhibit view command, because the exemplary bit 7 of the copy control word was amended when it was recorded to prohibit another copying. Thus the IRD 100 can logically compare the state of the exemplary bits 6 and 7 with the built-in display inhibit command and deduce that the only copy represented can be decoded for non-real time view in the display 99.

Figure 3A depicts as functional blocks a second exemplary system wherein a digital recording player 200P is coupled to a digital receiver 100 and the display 90 via a simple data bus configuration. The functional blocks of Figure 3A that provide the same function as that shown in Figure 1 are listed in a similar manner. Figure 3A represents the reproduction of the copy 210, from a means not shown, wherein the copy 210 includes the control of the digital copy or the CGMS-D commands present both in the header of the exemplary superpacket and in the package of transport. The copy control bits define the three states described above. Clearly, if the copy control bits allow for unlimited copying, no control response is required or initiated by the 2OOP player. The second and third copy control states make copying impossible or allow only a single copy. However, since Figure 3A represents the digital reproduction of the copy 210 from the player 200P to the digital receiver 100, and to the display 99, again no control response is required or required by the player 200P since the receiver 100 is assumed to be incapable of replication. However, Figure 3B represents an interconnection between the 2OOP digital player and the 200R digital replicator, which requires the execution of responses from copy control determined by the bits played by the 200P player. Clearly in both Figures 3A and 3B the player 200P transduces the copy 210 for different destinations and uses of the signal, namely decoding and displaying in Figure 3A and replica in Figure 3B. As described with respect to Figure 1, the digital replicator 200R can demultiplex the demultiplexed copy control bits of the exemplary superpackage, represented in block 203 and communicate the required copy control action to the controller 208. As described for Figure 1, the copy may be allowed, prohibited or a single copy allowed with that control bit of respective copy of the amended copy to prohibit the subsequent copying. The destinations of the differentiation signal and the consequential uses of the transduced copy 210 can be determined advantageously by the 2OOP player by means of a CRL serial data control line. For example, during the reproduction of the copy 210, the demultiplexer 203 can extract the inter-bit bits 6 and 7 of CBMS-D from the header of the exemplary packet. When bits 6 and 7 prohibit copying, the controller 208 may scan via the control line CRL to determine the destination of the transport packets or superpacks around which it will be coupled via the serial data bus. The control via a data bus is well known and can be implemented in various ways, for example, the controller 208 may generate a message requiring responses from all the busbar nodes thereby identifying the apparatus coupled to the control bus. Thus transport packets or superpacks can be coupled for decoding and display but can be inhibited for busbar coupling with a recording device. Alternatively, the controller 208 may specifically direct the transport packets or superpacks to a non-replicating destination, for example the decoder 100/109. Thus the copy 210, with the prohibited copying, can be coupled for decoding and visualization but the busbar coupling can be inhibited which responds to a determination of the apparatus present in the busbar, for example the digital replicator 200R. In the commentary to Figures 1, 3A and 3B, it was assumed that the recording or replication devices were capable of demultiplexing the exemplary copy control word of the exemplary packet header. However, in replication devices that may fail, or be unable to demultiplex copy control data, copy control administration may be facilitated by means of the CRL control line. As discussed for Figure 1, the copy control data may be filtered or demultiplexed from the stream of selected programs in block 10. The Copy control data may be coupled to the controller 111 for the periodic bus transmission via the CRL control line. Thus the copy control data can be coupled to the replicator controller 208 thereby facilitating the required copy management. In replication devices unable to modify the copy control bits when required by a single copy authorization, the replication device will transmit via the control line the correct copy control data, namely the prohibited copy. The control line copy control data will be transmitted periodically, for example at least once per second. when a replication device determines a difference between the copy control data received via the CRL control line and that is demultiplexed from the packet header, the device inhibits recording or replication. However, in the event that the copy control data is absent from the CRL control line for a predetermined period of time, for example 10 seconds, the CGMS data of the packet header is assumed to be correct and administration is facilitated. of the copy. Figure 4 depicts an analog recorder / replicator 300 coupled to an analog signal AS, decoded from a digital signal source by an integrated receiver decoder 100. An analog copying flag is demultiplexed, for example by block 104, from an exemplary DSS® electronic program guide. The demultiplexed copying or copy control data is coupled to the controller 111 which in turn invokes the required copy management control by means of the anti-copy device 110, for example a MACROVISION® apparatus. As shown in Table 1, the analog CGMS-A provides the same three conditions of copying as CGMS-D, namely, unlimited copying, copying prohibited and a permitted copy. In the unlimited copy condition analog output signal AS passes through the anti-copy block 110 without modification or addition of signal. When copying is forbidden, the copy block 110 modifies the decoded AS analog signal so that it makes a useless copy but still allows the direct visualization of the decoded analog signal in the display 99. The third control condition, namely only one copy , requires that the AS analog signal be modified before copying to indicate that the copy contains material for which copying is prohibited. The recording prohibition may be encoded during a vertical extinction range of the analog signal, for example by the use of line 21. In FIG. 4, the demultiplexed CGMS-A may be encoded as described in exemplary line 21 of the interval of vertical extinction or AS signal. When an AS signal is received by the replicator 300, the line 21 is demultiplexed in the block 301. When it is read the third copy management condition from the copy control data the controller 311 enables the multiplexer adder 302 which modifies the online data 21 to reflect a prohibited recording state.

Claims (30)

1. An apparatus for processing a source (101) of compressed digital video and control data (101A) that is presented in transport packets (101A) and includes an element (104) that responds to the source (101) to derive the data from copy control (104A) of the transport packets (101A), characterized by: an element (105) that responds to the copy control data (104A) to generate a copy control word (CC); an element (108) to form a super package (SP) which includes the copy control word (CC) and transport packets (TP); and, an element (151) coupled to the forming element (108) for coupling the super pack (SP) including the copy control word (CC) and the transport packets (TP) to a data bus (500). The apparatus of claim 1, characterized in that the copy control word (CC) indicates a control condition that enables multiple replication. The apparatus of claim 1, characterized in that the copy control word (CC) indicates a control condition that prohibits replication. 4. The apparatus of claim 1, characterized The copy control word (CC) indicates a condition that enables only one replica. The apparatus of claim 1, characterized in that the decoder (109) is controlled in response to the copy control data (104A) to enable the decoding of the transport packet signal in a first condition of the control data copy and disable the decoding of the transport packet signal in a second condition of the copy control data. The apparatus of claim 1, characterized in that the super package (SP) comprises the transport package (TP) and a header that includes the copy control word (CC). The apparatus of claim 1, characterized in that the data bus (500) couples the super package (SP) to the replication device (200) to control the copy control word (CC). Apparatus for processing a source (101) of video and digital control data that is presented in transport packets (101A) characterized in that: a means (104) responds to the source for deriving the copy control data (104A) ) of transport packages (101A); and an element (111) that responds to the data of copy control (104A) for enabling the coupling of the tremoting packets (102A) to a data bus for transmission and copying, wherein a first condition of the copy control data (104A) is representative of copying allowed and the coupling of the transport packets (102A) to the busbar is enabled, and in a second condition the copy control data (104A) is representative of prohibited copying and the coupling of the transport packets (102A) with the busbar is disabled. 9. The apparatus of claim 8, characterized in that in the first condition the copy control data (104A) are representative of the allowed copying and the control elements (111) disable the decoding of the transport packet signal. 10. An apparatus (200) for copying video and compressed digital control data that is presented in a super pack (SP), the apparatus comprising: the source (102) of the super pack (SP) wherein the super pack (SP) includes a word copy control (CC) and a transport packet (TP); an element (30) that responds to the source (102) of the super pack (SP) to read the copy control word (CC) of the super pack (SP); an element (206A) coupled to the source (102) to copy the super pack (SP) to a medium (299); and, a control element (208) that responds to the copy control word (CC) to control copying by the copying element (200). 11. The apparatus of claim 10, wherein the copy control word (CC) is indicative of a control condition that enables multiple copies. 1

2. The apparatus of claim 10, wherein the copy control word (CC) is indicative of a control condition that prohibits copying. The apparatus of claim 10, wherein the copy control word (CC) is indicative of a control condition that enables a single copy. The apparatus of claim 13, wherein in response to the copy control word (CC) indicating the single copy the control element (208) amends the copy control word (CC) to indicate that the copying is prohibited. The apparatus of claim 13, wherein in response to the copy control word (CC) indicating the single copy the control element (208) amends the copy control word (CC) to indicate that the copying is prohibited in a superpacket (SPa) coupled for copying. 16. The apparatus of claim 15, wherein the single copy (210) includes the copy control word (CC) amended to prohibit copying. The apparatus of claim 10, wherein a copy (210) generated by the copying element (200) includes a super package (SPa) and the copy control word (CC). The apparatus of claim 10, wherein the copy control word (CC) allows only one copy, a copy (210) generated by the copy element (200) includes a superpacket (SPa) and a control word copy (CC) that prohibits copying. The apparatus of claim 10, further comprising elements (102) for receiving a control signal (CTRL) indicating the copy control data (104A). The apparatus of claim 19, wherein the control element (208) responds to one of the copy control word (CC) and the control signal (CTRL) indicating the copy control data (104A) . The apparatus of claim 18, wherein a copy control word (CC) that prohibits copying is coupled to generate a control signal (CTRL) for coupling to a control signal conductor (CRL). 22. The apparatus of claim 10, wherein in response to the copy control word (CC) during the copy condition signal INHPB inhibits an output transport packet signal (PBSP) of the copying apparatus (200). . 2

3. The apparatus of claim 10, wherein in response to the control signal (CTRL) the decoding of the transport packet signal is enabled in a first condition and the decoding of the transport packet signal is enabled in a second condition. 2

4. The apparatus of claim 23, wherein the second condition enables copying. 2

5. An apparatus (100) for controlling a recording device (200) including an element (104) responsive to a source (101) of compressed digital video and control data presented in transport packets (102A) and which include data for copy control, to derive from the transport packets (102A) copy control data (104A) characterized by: an element (105) that responds to the copy control data (104A) to generate a word copy control (CC); and, an element (151) for coupling the copy control word (CC) via a data bus (CRL) to control the recording device (200) that responds to the copy control word (CC). 2

6. The apparatus of claim 25, characterized in that the copy control word (CC) is representative of a plurality of control conditions. The apparatus of claim 25, characterized in that the recording device periodically the copy control word (CC) receives and in the absence of periodic reception the recording device (200) assumes a state of prohibited copy. 28. An apparatus (200) for recording compressed digital video and control data presented in transport packets, characterized by: a first element (102) coupled to receive a superpacket (SP) signal including a control word of copy (CC) and a transport packet (TP), a second element (102C) coupled to receive contrcl data representative of copy control data (104A); an element coupled to the first receiver element for reading the copy control word of the superpackage; an element (206A) coupled to the receiving element (102) for copying the super pack (SP); and, a control element (208) coupled to the reading element (30) and the second receiving element (102C) for controlling the copying element (206A) that responds to the correspondence between the information represented by the copy control word (CC) and the information represented by the control data (CTRL) representing the copy control data (104A). 29. The apparatus of claim 28, characterized in that the second element (102C) periodically data (CTRL) representatives of the copy control data (104A) receives and in the absence of periodic reception the recording device (200) assumes a state of prohibited copy. 30. An apparatus (200P) for processing a source (210) of video and digital control data that is presented in transport packets (210A), characterized by: an element (203) that responds to the source (210) to derive Copy control (CC) data of transport packets (210A); and, a control element (208) coupled to a busbar for determining an appliance presence at a destination in the busbar and responding to the copy control (CC) data that controls the coupling of transport packets ( SP) to the destination, wherein the copy control data (CC) are prohibited copying reps and the control element (208) determines a presence of a replication apparatus at the destination the control element (208) inhibits the coupling of the transport packets (SP) to the destination, and in a second condition the control element (208) determines an absence of the replication apparatus the control element (208) enables the coupling of the transport packets (SP) to the destination .