TW508952B - Chaining mechanism of single user and multiple video decoders - Google Patents

Abstract

The invention provides a chaining mechanism of signal user and multiple video decoders, using a headend with a user management unit and a chain control unit to control at least two sets of matching pairs for video decoder in effort to separate the video decoder into a host system and a subsystem. The successfully matching video decoder further uses the radio chain control signal continuously sent from the host system to ensure whether the host system and subsystem are matched. When the subsystem receives the chain control signal, it will compare the initially matching signal at setup and the carried clock by the headend to ensure whether they are matched. By means of the chaining mechanism of the invention, it is featured by simple construction, convenient installation, high safety and low cost without requiring externally installed control signal line or dedicated parts.

Description

16 MM 9Π1π〇9 ^ V. Description of the invention (1) The field of the invention is modified: The present invention relates to a chained device (a mother-child-to-single-user group of multiple video decoder decoders) ) 'Especially related to the chain mechanism. (Set Top is on the background of an application invention: According to the competition of the paid video decoder, for the misappropriation of the user without additional service fee, or the loss of revenue for many of them, it is necessary to establish a limited number of Physically, a single user operates the same channel selection, but works. The conventional connection method and power signal control are described as follows: The first type of decoder and the master machine and the connection cable are connected in series. However, the use of the machine causes high construction costs and the master machine. The connection fee of the TV is called Ip-Taiwan, so the households share it, so when the chain machine is installed, it is installed through the application of the chain control system and so on. However, the second station is the same. Multiple lock mechanism method packs will be developed, and most of the video decoders above the video account, the user makes these video methods to move video decoding on their own, the slave does not include the connection of these types of one user The operator only receives the information and decodes it, which results in the use of multiple decoders or stealers. Each can be separated and locked. For example, in the first picture, the slave and the slave are connected to the master and the slave at the same time. This method must be added separately, and the wires are also different. If it is wrong, this connection to the signal loading control prevents the slave unit from being disconnected from the additional wiring, which not only costs a lot; if the installation is incorrect, the slave and the master unit will be installed. Due to the hardware cost of the market, the two decoders can be easily connected to the video decoder in the pay TV industry. Both can be masters separately, and they are separate accessories. Control methods are described separately, and the masters are used to separate the video cables. Difficulties in work, timing, because the child cannot work, 508952 91. 8. i amended

In addition,-a kind of exclusive accessory control method, as shown in the second figure, it connects the j-in power cord to the exclusive accessory first, such as a distributor, and then the accessory is equipped with a master and a slave. Not only is the exclusive accessory available To bring in the differences in signals, it is also used for internal exclusive signal transmission. = DC signal control method. In other words, the exclusive accessory uses the DC side ^) 'The DC control signal sent from the master unit is connected from point A to point B' The slave unit separately determines whether the signal exists, and if it does not exist, press the pulse: Make; the signal sent by the master unit It can be DC or digital high and low power method ^ ΐ RF) high frequency control signal, compared with DC or digital pulse ;. The disadvantage of the… law is that if the home is already equipped with division number 90111923 V. Description of the invention (2) is quite troublesome. The handset should be designed with different exclusive dry order parts to make its inventory cost relatively higher. The last method is the power signal control method. As shown in the third figure, the signal modulation is also transmitted in the power line and is at home: other families with two heart pieces = taxi signals, but this method uses 遽 复 成 太: Ί 南, the installation of filters requires additional construction, resulting in a relatively high cost of Dan. In order to effectively achieve the control of multiple video decoders in January, a single-user multi-group video decoder was introduced in January to overcome the lack of knowledge. In order to have the purpose and summary of the invention:

V. Description of the invention (3) The device interlocking mechanism uses additional control signal lines or a network to facilitate installation, and does not require the present invention to adopt a dynamic encryption method, which can reduce costs, and Another object of the invention is to tie it together, which is not easy to be cracked. The existence of a network will not cause the use of: a chain mechanism, which will damage the current decoder. Interference, and will not cause video because of misconnection: the chain mechanism, its video solution to solve the problem, can avoid human absence or the user's own control = head-end control is the same on the hardware circuit, the peak σ is 疋, and the sub- The difference between the master machine and the master machine is controlled by software. Each single ^ :::: is intended to be adjusted, and there are no restrictions on the two. The number of handsets in the household, and the number of handsets is another purpose is to adopt a soft change control agreement, in order to respond to different regions: = method can be ordered. A door operator also has different software control procedures-Lian ^ Zhen ^ ^ The purpose of the description 'The present invention is to use-the user management unit and many more: to output a pair of digital signals, and sequentially by- Frequency scrambling code function of your field scrambler, a qam modulator and main line amplifier, and then transmit it to the optical receiver and the receiver through the cable TV network, so as to distinguish the paired digital signal to the device by using several splitters. In the encoder, the multiple sets of video decoding are paired to confirm that they are paired with I, i, and two, and use the chain control signal sent by the master to illuminate the following detailed description with specific examples in conjunction with the attached drawings. The purpose, technical content, characteristics of the invention and its achievement

Effect 0 Description of drawing number: 10 Instant video compression 14 Interlocking control unit 18 Scrambler 22 Cable TV network 26 Trunk amplifier 32 Family brancher 34A Mother machine 36 Tuner 40 Single-chip video decoder 44 RF modulation module 48A Satellite video Decoder 48B Satellite Video Decoder 50 Satellite Antenna 12 User Management Unit 16 Multiplexer 20 QAM Modulator 24 Optical Receiver 2 8, 3 0 Divider 34 Video Decoder 34B Subunit 38 QAM Demodulator 42 Memory 46 Cross-link capacitor (master) (slave) 52 Downconverter

Detailed description of the control to achieve the mechanism of signal and control ^ invention is to use the attenuation characteristics of the splitter to effectively prevent the video decoder: # user Xikou video decoder purpose. ^ As shown in the fourth figure, the single system of the present invention includes an ancient B Shi Xi Zhu 511 decoder; there is-instant video compression 10, providing digital: J lock-user management unit 12, pay TV number recognition 'And provide Tian Hu 6-chain control unit 14, its branches for users to configure

The I system makes the chain control list 〖4 ^ +, 贝 ^ code pairing ~ yuan 14 output a paired digital signal ‘· other

Page 7 508952 Rep, ιΐ92ΐ ~ _month 16 s Revision V. Description of the invention (5) A multiplexer 16 is connected to the instant video compression 10 and the chain control unit 丨 $, so as to mix and receive the digital signals received by it After completion, it is transmitted to a scrambler 2 to provide the scrambling function of the digital signal; and then a QAM is used to modulate the angle. _ 2 0 Modulates and up-converts the 4 digital l number to transmit it via the cable television network u. First the receiver 24 and the main line amplifier 26; and then uses a plurality of splitters 28, 30 and 30 connected to the main line amplifier M. The role of a home brancher 32 is to send the digital ^ number to the two sets of video decoders ^ of the user for pairing to distinguish the multiple sets of video decoders 34 into a mother machine A and a slave machine B. Among them, the structure of the video decoder 34 please refer to the fifth figure, which includes a tuner 36, which tunes and receives the cable TV signal, and then uses a QjM demodulator 38 to the digital of the cable TV. The signal is demodulated; and a single-chip video decoder 40 is connected to the demodulator to restore and output the digital signal after demodulation to the TV screen, and the single-chip video decoder 40 can temporarily store image data Stored in a memory 42, including dynamic random access memory (dram) and flash memory (Flash Memory) for access; a radio frequency modulation module 44 is connected to the single-chip video The decoder 40 is used for receiving control signals and transmitting interlocking control signals, and connecting the radio frequency modulation module 44 and the tuner with a cross-connecting capacitor 46 to isolate the DC level and allow the AC signal to pass. As shown in the fourth figure, the head-end user management unit 12 sends a pairing signal to the interlocking control unit 14. This pairing signal includes the serial number of the master and the slave. Since each video decoder 34 has a The unique serial number of the group, so the serial number of the video decoder 34, which is the master or the slave, will not be repeated. The chain control unit 14 will convert this pairing signal into dvb.

Paired digital signals in Transport Stream format are transmitted to the multiplexer 6 in " " 丨 丨 丨 丨 丨 丨 " " 丨 丨 丨 — 丨 丨 1 __ ° 508952

i number 90111QM

V. Description of the invention (6) After being transmitted by the above-mentioned cable television network module, it is transmitted to the user = evening: the video decoder 34, this signal will be sent multiple times. Multiple sets of video decoders 34 are set to == at this time, the video decoders 34 that have been successfully paired in the TV glory connected to the video decoder 34 will continuously send RF control signals to confirm whether the pairing of the child and the mother machine is correct. The video decoder 34A for the master is based on the chain control unit ° 14 control number 1, adding the time code sent by the head end periodically to transmit a chain two k number, the format is f (master number, Sub-machine serial number A, sub-machine serial number two B., ..., time code, garbled) 'f function represents the scrambler, this scramble ^ uses the industry standard 3-DES as the main or other custom format, and the earning system It can be downloaded to the video decoder from the headend to distinguish the work of different W-styles. When the video decoder 3x set as the slave receives the interlocking signal, it will be compared with the pairing signal at the initial setting to determine whether the pairing of the slave 34B and the master 34A is correct, and that the slave 34B is correct ^ The time code carried by the terminal and the slave 34B received the interlocking control code # ^ code to verify it. If it is correct, it will be confirmed, otherwise the slave 34B will not be able to confirm after a few J failures. ## It must be installed. I use the above-mentioned interlocking control signal to prevent communication interlocking signals from being intercepted and used by people. The advantage of this method is that each time the main unit is sent, it is time-sensitive. Intermediate code plus garbled purpose for chain control signal repeated after recording

Page 9 MM 901119 ^ V. Description of the invention " The chain control signals output from the above-2 conflict with each other, the present invention (1) is based on the 3 digit serial number after each parent machine: and 4, ^ uses the following mechanism when broadcasting standards Pulse, automatically select the wrong ^ ^ The mother opportunity is selected at the hour of the hour according to the head unit of 123;: Clock: Day; The sequence is as the last three code signals. Because the decimal only uses 〇 ~ 5, f 23 and send out the chain control. The actual use of the next 3 yards is only 54〇 ::: 〇 ~ 9 ′ is used. The chain control signal is transmitted repeatedly. The master machine can be informed every 10 minutes, according to the headend settings, the master hangar section // Alpha slave is working, broadcasting time and clock, the slave will learn the signal from the second: and the control signal (every 10 minutes Send]; The chain sent to the master machine does not receive this signal, it will be on the TV screen ▲; in :: multiple times in a continuous state j # stomach ° (3) The master machine is even in standby state. Lock control "bluff, The ^ ^ t ^ staggered mechanism of confirming the allocation of the master and slave machines at any time 'two master machines in the same network send an overshoot :: the chance of arrival is greatly reduced, and because of the reduction of 2. One or two master machine chain control signals Will be visited by $ ^ ^, do not interfere with the work of another master machine. Therefore, the = 8-day Shiji signal uses the master machine serial number and the broadcast clock signal (time code). Disturbance: knife control can be effectively staggered In addition, the radio frequency signals of different mother machines are different. The present invention can effectively prevent the slave 34β from being moved from user A to user B. Please refer to the fourth figure at the same time. The principle is that user A = home diverter 32 —The general attenuation is 3 ~ 6 άβ, so the mother machine 34A of the video solution 34 For slave 34B, from master 34A to slave 34B page 10 508952 case number 90111923

V. Explanation of the invention (8) The attenuation of the RF signal is generally between 3 and 10 dB; the attenuation of the user brancher 30 is 12 dB or higher, and its adjacent crosstalk attenuation is 24 dB or higher. The RF interlocking control signal sent by user A ’s mother machine 34A first passes through the home splitter 32 (attenuation of 3 to 6 dB), and the attenuation transmitted to user B through user splitter 30 is more than 30 dB, so the son of user A If unit 34B is moved to user B, the slave unit 34B no longer works due to the excessive attenuation of the RF interlock control signal (over 12 dB of the design). Similarly, when user A's video decoder 34 is moved to a user in a further area, the number of separated devices increases, so the RF interlocking control signal attenuates more, making the video decoder inoperable. Therefore, the effective working sensitivity of the RF modulator of the video decoder designed by the present invention is designed to be 2db, so there is no problem in the chain control of multiple groups of video decoders in the same user, but when it is used by other users, the signal Will be attenuated more than 丨 above and can not work properly, so can prevent theft of cable TV. In addition to the above embodiments, the present invention can also be extended to satellites.

The live video decoder, as shown in the sixth figure, the L input of the satellite video decoder 48A is input to the satellite video decoder WAih input by the satellite antenna 50 after receiving the signal through the function of a downconverter 52. And using the satellite video decoder 48A: ^ input terminal to bypass the low-frequency (L-band) signal to the satellite video decoder WAiL output terminal output, and then ^ b ^ satellite video decoder 48B L input terminal, Both satellite video decoders 48A and 48B can receive the low frequency signal. At the same time, a radio frequency (KF) receiving module is added to the 11 input terminal of the satellite video decoder 48, and an RFTX modulation module is added to the l2 output terminal, so that the chain mechanism of the present invention can be used in the video decoder of the satellite. ”And Jiewei 508952 SE 90111923 91. 8. 16 years J_a amendment V. Description of the invention (9) Among them, the direct broadcast satellite and clock signal to the satellite group satellite video decoder 48, 48A and 48B will send a chain control regularly. Correct, it is no longer between 950-plus, so this chain uses this hair together with the installation and control of the invention, and this hair plus each is missing or the same, the production body is controlled, and above the diverter ' Its purpose is based on the present invention in detail in the function and principle of the present invention; "The effective limitation mechanism of 2050MHz can prevent an account and it is clearly using the existing H-line or using dynamic encryption to decode video-to-video decoding users It ’s more convenient to install it, and the loss of each single user is 12dB. The embodiment described above allows the head-end of the patent range that is familiar with this application to be indestructible, and can still play a pair of control signal video decoder 48 to After pairing, the two are divided into mother machine A and slave machine B; after the satellite video is decoded, the satellite video decoder as the master machine sends a 4 A signal to the slave machine 48B to confirm Whether it is the same as the previous embodiment of the cable television, and because of the bandwidth of the low-frequency (L-band) signal, the signal attenuation is increased by the physical range of the slave unit 48B with the length of the wiring. Two different users who are physically separated to avoid the monthly fee of pay TV. Some signal networks are easy to install and do not need to use exclusive accessories, so the cost can be reduced, and this method has high security and is not easy to It is cracked by humans. The pairing system of the son and the mother machine of the repeater is controlled by the head end, because the system has a unique serial number, so that people can not change the setting; and the son and mother machine do not need to be adjusted on the hardware circuit. The difference between the two There is no limit to the number of slaves in the soft group, as long as it is within. Only those who explain the technical ideas and features of the present invention can understand the content of the present invention and limit the scope of the patent of the present invention, that is, All equal changes or modifications made by God should still be covered.

Page 12 508952 91. Β, 1δ _ Case No. 90119923_ year month day __ Brief description of the diagram Description of the diagram: The first diagram is a schematic diagram of the conventional chain mechanism using the connection method. The second figure is a schematic diagram of the conventional accessory mechanism using the proprietary accessory control method. The third figure is a schematic diagram of the conventional power supply signal control method. The fourth figure is a system architecture diagram of the present invention. The fifth figure is a schematic structural diagram of a video decoder of the present invention. The sixth figure is a schematic diagram of the satellite video decoder interlocking device of the present invention.

Page 13

Claims (1)

508952 Amended MM 9Qin ^ VI. Patent application scope 1 Single-user multi-group video decoder.-Real-time video and audio shrinking to provide digital pay TV II. A series of sales in 丨 I stay-^ ^ 4 ，， 70 ， Pairing disc # of the negative video decoder. A user 瞢 铝 aluminum-! C, ~ /, 4 workers f 丨 J, so that the basin outputs a Γ Γ user pairing signal to the chain control unit, A pair of digital signals is outputted as early as το, Xi Gong is 'connected to the real-time video and audio pressure-a mixed addition of digital signals received by him; 4 lock control early' in order to: disturb = the received from the multiplexer Digital signal adds scrambling code function: The old broken modulator modulates and up-converts the digital signal, so that am = depending on the network transmission to the optical receiver and the main line amplifier; and, the user! 11 连接, connect the main line amplifier ' In order to send the digital signal to eight video decoders, the video decoder can be divided into a master and a slave by pairing. 2 God: The chain mechanism described in item 1 of the patent scope of the application, wherein the user pairing signal output by the user management early includes the serial number of the master and the serial number of the slave. 3.2 凊 The chaining mechanism described in item 1 of the patent scope, wherein the video decoder set as the parent is based on the control signal of the chain control unit, adding = code, sending out-chain control signal, making the setting as the slave After the video decoder receives the side chain control signal, it will compare it with the pairing signal at the initial setting to confirm whether the child and mother are paired correctly. 4 Please refer to the chaining mechanism described in item 3 of the patent scope, where the chaining control h includes the serial number of the mother machine, the serial number of at least one child machine, time code and garbled, etc., and then add the scrambling function. 5. The chain mechanism as described in item 3 of the scope of patent application, wherein if the slave device is moved to other users, the patent application must pass through the I 4 signal to make the signal attenuate too much. 6. The chain control as described in item 3 of the scope of patent application: Control signal: use the master sequence: and broadcast clock code chain control to stagger the interference of the master signal of different users. Yu Dao 7 · —Single-user multi-group video decoding 5 | Speed * Pairing method and gift of video decoder It is matched by the headend. The pairing method is used by a headend output—matching: 俨 3 f lock control 2 method After the transmission of the video network module, the video video Γ = is used again to calculate the video video ===== ::: The parent machine is added to the code in accordance with the head-end control. A chain of control signals has been issued, at least one; pull! ; r ^ The soil is determined whether the pairing of the son and the mother is correct, two +, if the time code comparison of the positive control signal of AS; " chain control signal, 8 the linkage mechanism described in item, wherein the head end is 9 such as; Early Fan and a chain control unit. The chain mechanism of Λ, which is used in the above, is that the head loses 1. . For example, C includes the serial number of the master and the serial number of the slave. The control signals include the chain mechanism of the main machine, and the chain control mechanism, among which the chain control, etc., further increase the disturbance power: a serial number, time code, and garbled code of the slave machine 508952 _ Case No. 90119923 _ month 6th, patent application Scope 1 1 · As described in item 7 of the scope of the patent application, if the handset is moved to other clients, it must go through more diverters. ^ Send = chain control signal, which causes the signal to decay too much. The handset will no longer work. 1 2 · The interlocking mechanism as described in item 7 of the scope of the patent application, wherein the interlocking control signal adopts the master sequence code and the time ^ division ^ division of labor ^ of the broadcast clock signal to stagger the interference of the master signal of different users. 13. — A single-user multi-group video decoder chain mechanism video decoder, receiving; demodulation; to demodulate the number to provide its temporary data-a tuner, which tunes the cable television signal A demodulator is connected to the single-chip video decoder of the digital signal of the cable TV, and the demodulator is connected to the bit # to restore and output; a memory is connected to the single-chip video decoder, and the stream is broadcast and broadcasted. The matching information is used to receive and control 'connect the single crystal ϋΐ! Radio chain control signal; and the level' let the AC modulation module and the tuner '"isolated straight β _ one test ypm% ^ ^ ^ tfi 2 video Confirmation of the decoder; The system is made by the head-end pairing method I, using -head-end output-; = lock control method 'after' In order to set Xi, a, ▲ to a user's at least two sets of satellite video and μ nail decoders as the master and child respectively Amendment 6. Apply for patent scope machine and signal in Weiwushu, add time gate: the parent machine in the decoder department receives the chain two according to the head-end slave machine; = out: chain control signal, at least-the number is performed The comparison, after speaking, the pairing letter of ψ and the initial setting will be based on whether the head-end is matched, whether the master is paired correctly, and the time of the slave is also compared with the% code between the master and the slave to receive the chain. The control signal <% code comparison is confirmed if it is correct. The chain mechanism described in item 14 of the patent / patent scope, wherein an RF receiving module is provided at the input end of the health = howling decoder, and an RF modulating module is provided at the output end. To receive and transmit signals. 16. The chain mechanism according to item 14 of the scope of patent application, wherein the user pairing signal output by the headend includes the serial number of the master and the serial number of the slave. 17. The interlocking mechanism as described in item 14 of the scope of patent application, wherein the interlocking control signal includes the serial number of the main unit, the serial number of at least one subunit, time code and garbled, etc., and the scrambling function is added. 18. The + chain mechanism as described in item 14 of the scope of the patent application, wherein the chain control signal uses the time code division and time division control of the master sequence code and the broadcast clock signal to stagger the interference of the master signal of different users.