CN1260056A - Access control system - Google Patents
Access control system Download PDFInfo
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- CN1260056A CN1260056A CN97182171A CN97182171A CN1260056A CN 1260056 A CN1260056 A CN 1260056A CN 97182171 A CN97182171 A CN 97182171A CN 97182171 A CN97182171 A CN 97182171A CN 1260056 A CN1260056 A CN 1260056A
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- program
- equipment
- logical device
- assembly
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T9/00—Image coding
- G06T9/007—Transform coding, e.g. discrete cosine transform
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
- H04N7/17309—Transmission or handling of upstream communications
Abstract
There is disclosed a broadcast and reception system (100), comprising, at the broadcast end: a broadcast system (2008) including means for broadcasting a callback request, and at the reception end: a receiver (2020) including means for calling back the broadcast system in response to the callback request, wherein the broadcast system is arranged to validate said receiver via said callback request.
Description
The present invention relates to a kind of access control system, specifically, the present invention relates to a kind of method that at least one assembly of one computer system is conducted interviews by program, more particularly, the present invention relates to the method that at least one assembly to employed computer system in the receiver/decoder of broadcast figure signal conducts interviews.
Because be mainly used in broadcast television signal, special (but not exclusively) is the appearance that is used for the digital transmission system of satellite TV system, thereby make and also this system can be used for various other purposes.One of them just provides mutual with the final user.
A kind of mode that realizes above-mentioned purpose is operation one application program in the receiver/decoder of received television signal.The code of this application program can for good and all be stored in the described receiver/decoder.But this has certain limitation.Best is that described receiver/decoder should be able to be downloaded the code that is used for required application program.In this way, can provide more diversity, and, can be under the situation that does not influence the user on-demand update application program.
Generate the performed application program of receiver/decoder by each broadcast program supplier.In general, described receiver/decoder has be used for a plurality of interfaces of linking to each other with external unit such as serial line interface and parallel interface.Be provided for the device driver of these interfaces by the manufacturer of receiver/decoder.With regard to a plurality of application programs source and a plurality of receiver/decoder production source, importantly an application program works by same mode in each receiver/decoder, and each receiver/decoder all can be carried out each application program by identical suitable mode.
Therefore, in aspect first, the invention provides a kind of method that at least one assembly of one computer system is conducted interviews by program, described method comprises the following steps:
The logical device relevant with each corresponding assembly is stored in the said system, and described each logical device has the corresponding apparatus sign;
One program identification is composed to said procedure; And
From said procedure, one signal that comprises the device identification of said procedure sign and each logical device exported to a shared interface between described program and each logical device, so that form communication channel between aforementioned program and each logical device by above-mentioned interface.
Utilize said method, can with the irrelevant situation in program and hardware source under provide a shared interface between " hardware " of each program in aforementioned computer system and receiver/decoder.
Described signal also comprises an order, and it can make described program receive the message of an output from respective logic equipment, the state variation of the assembly that this message indication is relevant with described logical device.
Therefore, the program of can reminding is noted " unscheduled event " locating to occur at one of described assembly, for example receives a message with the serial line interface of computer system or a smart card (smartcard) is injected the smart card reader of computer system.
Above-mentioned message temporarily can be stored in the line-up device of aforementioned calculation machine system, so that pass to said program later on.In other words, described program notification logic equipment needn't give information to program immediately.
Best is, described line-up device comprises a plurality of formations, and each formation all has corresponding priority level, and the order of described program is passed to message in this priority indication from above-mentioned line-up device, and described signal also comprises the priority that aforementioned messages temporarily is stored in formation wherein.
Therefore, described program can be specified " urgency ", according to this " urgency ", comes processing messages by the priority that indicates the line-up device processing messages by described line-up device.
In aspect second, the invention provides a kind of method of utilizing said method by a plurality of programs at least one assembly of one computer system to be conducted interviews, each program visits described assembly by aforementioned interface.
Therefore, the invention provides a kind of shared interface, it is used for communicating by letter between program and the one or more logical device, and is used for communicating by letter between a logical device and the one or more programs.
The 3rd aspect of the present invention provides a kind of method that transmits data between program and computer system component, and this method comprises the following steps:
Utilize said method described assembly to be conducted interviews by program; And
From said procedure, comprise that with one the signal of the device identification of said procedure sign and logical device exports to a shared interface subsequently, with one instruct order that an assembly operates by associated logical device, to export to aforementioned shared interface by the data of above-mentioned logical device are exported in the address and being used for that described logical device inputs to the data of aforementioned components by said modules address.
In aspect the 4th, the invention provides a kind of method that transmits data between program and computer system component, this method comprises the following steps:
Utilize said method described assembly to be conducted interviews by program; And
From said procedure, comprise that with one said procedure identifies and the signal of the device identification of logical device is exported to a shared interface subsequently, with an order of instructing an assembly to operate by associated logical device, before passing to described program, wherein temporarily store the priority of the formation of a message, to input to the address of the data of aforementioned components by described logical device, and the address that is used for being exported to by said modules the data of above-mentioned logical device exports to aforementioned shared interface, and said message is output and be used to refer to the state variation of the assembly relevant with described logical device from corresponding logical device.
So, in case visit between described program and the computer module is provided, be provided for sending data the route of an assembly to from aforementioned program with regard to the communication route of available formation like this, vice versa.
Can aforementioned program and/or each logical device be inputed to aforementioned calculation machine system by an assembly.This just can download easily and " renewal " described computer system in program and logical device.
Best is that described each assembly includes at least one in mpeg stream tuner, serial line interface, parallel interface, modulator-demodular unit and the smart card reader.
In aspect the 5th, the invention provides a kind of equipment of at least one assembly of computer system being conducted interviews by program of being used for, the logical device relevant with each corresponding assembly is stored in the aforementioned calculation machine system, described each logical device has the corresponding apparatus sign, and aforementioned equipment provided by the present invention comprises:
Be used for a program identification is composed device to described program; And
Be used for according to exporting from aforementioned program and comprising that the signal of the device identification of said procedure sign and each logical device forms the device of the communication channel between described program and each logical device.
Described equipment of the present invention also comprises and is used to make described program to receive the device of an output from the message of respective logic equipment, the state variation of the assembly that described message indication is relevant with described logical device.
Best is, described computer system also comprises line-up device, it be used for temporary transient storage by the message of aforementioned logical device output so that pass to said program later on.Above-mentioned line-up device can comprise a plurality of formations, and each formation all has corresponding priority level, and the order of described program is passed to message in this priority indication from above-mentioned line-up device.
Described computer system also comprises such device, and the data storage that it is used for being inputed to the data of described assembly by aforementioned logical device and exporting to aforementioned logical device by described assembly is to said shared interface.
Best is that described each logical device links to each other with corresponding associated component by device driver.
In aspect the 6th, the invention provides a receiver/decoder that is used to receive program signal, it comprises foregoing equipment of the present invention.
Best is, described receiver/decoder also comprises the device that is used to receive compressed MPEG, is used for deciphering to the received signal with device that TV signal is provided and the device that is used for described TV signal is offered televisor.
Followingly in the mode of giving an example purely best features of the present invention is described with reference to accompanying drawing, in the accompanying drawings:
Fig. 1 shows the one-piece construction of the digital television system of most preferred embodiment of the present invention;
Fig. 2 shows the structure of the interactive system of above-mentioned digital television system;
Fig. 3 shows the structure of the file in the module in the storer that is downloaded to interactive receiver/decoder;
Fig. 4 shows the structure of the storer volume of above-mentioned interactive receiver/decoder;
Fig. 5 is the skeleton diagram of the interface of above-mentioned receiver/decoder;
Fig. 6 shows the structure of the software in the above-mentioned receiver/decoder; And
Fig. 7 shows an example of the annexation between an equipment manager, a plurality of client computer and a plurality of equipment.
Fig. 1 shows the general picture of a digital television system 1000.The present invention includes a common digital television system 2000, it uses the digital signal after known MPEG-2 compressibility transmits compression.Specifically, the streams of MPEG-2 compressor reducer 2002 receiving digital signals in the broadcasting center (generally being video signal flow).Compressor reducer 2002 links to each other with scrambler 2004 with a multiplexer by link 2006.Multiplexer 2004 receives a plurality of other input signals, compile one or more transport stream and will compress after digital signal pass to the transmitter 2008 of broadcasting center by link 2010, said link certainly is the various ways that comprises telecommunication link.Transmitter 2008 is passed to satellite transceiver 2014 by up-link 2012 with electromagnetic signal, in this transceiver, described electromagnetic signal is done electric treatment and by theoretic downlink 2016 it is broadcast to ground receiver 2018, a form of the parabola antenna that has or lease that described ground receiver is the final user usually.The signal that receiver 2018 is received is passed to integrated receiver/code translator 2020 that the final user has or leases and that link to each other with final user's televisor 2022.MPEG-2 signal interpretation after receiver/decoder 2020 will compress becomes to be used for the TV signal of televisor 2022.
Fig. 2 shows the general structure of the interactive television system 4000 of digital television system 1000 of the present invention.
For example, interactive system 4000 makes the final user once just requiring and can buying article, inquiry local news and weather situation figure according to the screen catalogue and play games by televisor.
One is positioned at the authoring tools 4004 in broadcasting center (or other place), and it can make broadcasting supplier establishment, exploitation, debugging and test application;
One is positioned at the application program and the data server 4006 of broadcasting center, and it links to each other with authoring tools 4004 and is used for making the broadcasting supplier to prepare, differentiate and format is passed to the application program of multiplexer and scrambler 2004 and data so that inject the mpeg 2 transport stream (generally being the special-purpose portion that injects this transport stream) that will be broadcast to the final user;
One virtual machine, this virtual machine comprises 4008 of run time engine (RTE), it is mounted in the executable code in the receiver/decoder 2020 that the final user has or lease, and this code can make the final user receive, differentiate that application program and application programs decompress and this application program is loaded in the working storage 2024 of receiver/decoder 2020 so that carry out.Engine 4008 also can move resident general purpose application program.Engine 4008 and hardware and operating system independent.
The backward channel 4002 of one modulation, it is between receiver/decoder 2020 and application program and data server 4006, so that the signal of commander server 4006 is injected data and application program in the mpeg 2 transport stream.
Described interactive television system utilization " application program " is operated, and described application program is controlled receiver/decoder and the function that is included in wherein each equipment.In engine 4008, application program is expressed as " resource file "." module " is one group of resource file and data.May need to form an application program with several modules." the storer volume " of receiver/decoder is the storage space that is used for module.One " interface " is used for download module.Module can be downloaded from mpeg 2 transport stream and be advanced receiver/decoder 2020.
Below describe above-mentioned parts in detail.
With regard to this instructions, an application program is one section computer code, and it is used for the HLF high layer function of receiver/decoder 2020 is preferably controlled.For example, when the final user aims at telepilot the button object of being seen on the screen of televisor 2022 and presses acknowledgement key, just move the instruction sequence relevant with this button.
The interactive application program provides menu and fill order and the data relevant with the purpose of application program are provided when the final user asks.Application program can be a resident applications, that is to say, they are stored among the ROM (or FLASH or other nonvolatile memory) of receiver/decoder 2020, perhaps can and download among the RAM or FLASH storer of receiver/decoder 2020 with application program broadcasting.
The example of application program has:
Initialization application program (Initiating Application).Receiver/decoder 2020 is equipped with a resident initialization application program, and it is adaptive module collection (following will defining this term in more detail), thereby receiver/decoder 2020 can be moved in the MPEG-2 environment immediately.The initialization application program provides core feature, and if necessary, broadcasting the supplier can make amendment to this feature.The initialization application program also provides the interface between resident applications and the down load application program.
Start application program (Startup Application).Start application program and can make no matter Any Application is that application program or the resident application program of downloading all can be moved on receiver/decoder 2020.This application program can be used as when serving for starting the boot that application program is carried out.To start application program and be downloaded to RAM, therefore, can upgrade this application program at an easy rate.Can after downloading, select and move interactive application available in each channel immediately or after prepackage, select and move interactive application available in each channel starting application deployment one-tenth.With regard to prepackage, described interactive application is put into storer 2024 also started with the startup application program when needed.
Program guide (Program Guide).Program guide is a kind of like this interactive application, and it has proposed the information of all relevant programs.For example, the information of all TV programme that provided in each channel of gathering as a Digital Television can be provided program guide.The final user can visit an additional screen by the button of pressing on the telepilot 2026, and this additional screen is superimposed upon on the screen of televisor 2022 on the shown incident that goes out.Described additional screen is a browser, and it has provided the relevant information of current and next programming events with the Digital Television set.The final user can visit a kind of like this application program by another button of pressing on the telepilot 2026, and it can demonstrate the information list relevant with the programming events in a week.The final user also can come programming events is retrieved and sorted by standard simple and customization.The final user also can directly visit selected channel.
Watch paying (Pay Per View) application program at every turn.Watch payment application is a kind of interactive service that can use together with conditional access system 3000 on each PPV channel of Digital Television set at every turn.The final user can visit this application program with TV guide or channel browsing device.In addition, in case on the PPV channel, detect the PPV incident, watch payment application to begin automatically at every turn.The final user can buy current programming events with sub-smart card 3020 or by the communication server 3022 (with modulator-demodular unit, phone and DTMF sign indicating number, MINITEL or similar system).Watch payment application can reside the ROM of receiver/decoder 2020 or can download in the RAM of code translator 2020 at every turn.
PC downloads (PC download) application program.When request, the final user can come downloading computer software with PC down load application program.
The magazine browser application.The magazine browser application comprises according to the final user coming periodically with the video mode broadcast image by the navigation of button screen.
Quiz (Quiz) application program.Best and the broadcasting quiz program synchronised of quiz application program.For example, demonstrate multiple choice on the screen of TV 2022, the final user can select an answer with telepilot 2026.Whether the quiz application program can correctly be notified to the user with answering and can score to the user.
TV shopping (Teleshopping) application program.In an enforcement of TV shopping application program, the article price of selling is passed to receiver/decoder 2020 and be presented on the TV 2022.The user can select the concrete article that will buy with telepilot.Can be according to the instruction of the debit being charged to the credit card account in the card reader 4036 that injects receiver/decoder 2020 already, the order of the article backward channel 4002 by modulation is sent to TV shopping application program and data server 4006 or sends the individual pins sale system that a telephone number has been downloaded to receiver/decoder to.
TV bank business (Telebanking) application program.In an example of TV bank application program business, the user injects bank card in the card reader of receiver/decoder 2020.Receiver/decoder 2020 usefulness are stored in the bank card or the telephone number that is stored in the receiver/decoder is dialled the bank of being this user, then, the TV bank business application a plurality of functions that available telepilot 2026 selects are provided in case for example by telephone wire download account list, transmission fund, request check book etc. between the account.
Internet-browser (Internet Browser) application program.In an example of Internet-browser application program, with telepilot 2026 input from the user watch the instruction of webpage such as request with specific URL, and send these instructions to application program and data server 4006 with the backward channel 4002 of modulation.Then, suitable webpage is included in the transport stream from the broadcasting center, with receiver/decoder 2020 by up-link 2012, transceiver 2014 and downlink 2016 receive this webpage, and with this web displaying on TV 2022.
Application storage is expressed as resource file in the Memory Storage Unit of receiver/decoder 2020 and with application program.Described resource file comprises Drawing Object description unit file, variable module unit file, instruction sequence file, application file and data file.
Described Drawing Object description unit file is that the people-machine interface of application program is described to screen.The handled data structure of described variable module unit file application programs is described.The processing operation of described instruction sequence file application programs is described.Described application file provides the entrance of application program.
The application program of Gou Chenging can be used the data file such as icon library file, image file, font file, color table file and ASCII text file in such a way.Interactive application also can by input and/output obtains on line data.
With reference to Fig. 3, the module 4010 such as the TV shopping module is one group of resource file and data, and it comprises:
The Drawing Object description unit file 4014 of uncertain quantity;
The variable module unit file 4016 of uncertain quantity;
The instruction sequence file 4018 of uncertain quantity; And
Also comprise the data file 4020 such as icon library file, image file, font file, color table file and ASCII text file in appropriate circumstances.
In mpeg data stream, each module includes one group of mpeg table.Each mpeg table all can be formatted as a plurality of data portion.In mpeg data stream, each data portion all has nearly " size " of 4 kilobyte.With regard to carry out data transmission by serial port and parallel port with regard to, for example, can like module class, resolve into table and data portion, the size of data portion becomes with medium with transmission.
Press form delivery module in mpeg data stream of packet, described packet is generally 188 bytes in for example video data stream, voice data are unified the data stream of respective type such as teletext data stream.The front of each packet all is package identifications (PID) of one 13, and each packet that transmits in mpeg data stream all has a PID.Program Map Table (pmt table) includes the tabulation of different data streams and defines the content of each data stream according to corresponding PID.PID can point out an equipment to have application program in data stream, identifies PID with PMT.
The thought of the thought of module 4010 and download segment code can be improved application program at an easy rate.This just can be downloaded to application program in the permanent FLASH storer of receiver/decoder 2020 as resident software or broadcast software, thereby can only when the final user needs application program be downloaded among the RAM of code translator 2020.
Storer volume (Volume) is the storage space that is used for module 4010.These storage spaces are positioned at the storer 2024 of receiver/decoder 2020.With reference to Fig. 4, storer 2024 generally can be divided into RAM volume 4022, FLASH volume 4024 and ROM volume 4026.Described storer also is divided into aforementioned module is downloaded to the storer volume that the various interface in the receiver/decoder 2020 is associated, and for example, can be divided into: the MPEG volume, and it is used to store the module of download from the MPFG bit stream; And, the serial volume, it is used to store the module that receives via serial line interface.
Each volume all includes the tabulation of module 4010, and each module 4010 all includes the tabulation of file 4012,4014,4016,4018,4020.Can have two of the same name but be arranged in the file of disparate modules.For example, a version of application program generally is stored in the ROM volume 4026, and subsequent editions then is downloaded in the FLASH volume 4020, so that replace the version that is stored in the ROM volume with being stored in the FLASH volume 4024 volume.The content compression of file can be become the LZW form, still, because the decompression of file can spend a period of time, so can receive the content of file by the form after decompressing.
The physical interface of receiver/decoder 2020 is used for data download.With reference to Fig. 5, receiver/decoder 2020 for example includes six download devices: mpeg stream tuner 4020, serial line interface 4030, parallel interface 4032, modulator-demodular unit 4034 and two card reader 4036.
With regard to a plurality of application programs source and a plurality of receiver/decoder 2020 manufacturing sources, importantly, by identical working, and each receiver/decoder should be carried out each application program by identical suitable mode in each receiver/decoder for application program.With reference to Fig. 6, receiver/decoder 2020 comprises a run time engine 4008, and it moves under the control of microprocessor and general purpose application program DLL (dynamic link library) 4054.Described microprocessor and general purpose application program DLL (dynamic link library) are installed in each receiver/decoder 2020, and therefore, from the angle of application program, all receiver/decoders 2020 all are the same.
Fig. 6 shows the structure of 4056 the receiver/decoder 2020 of being used to run application.Virtual machine 4007 executive utilities 4056, described application program comprise the application program 4050 that directly links to each other with this virtual machine ' or for example from mpeg data stream, be downloaded to the application program 4056 of receiver/decoder 2020 ".But run time engine 4008 also display graphics and text, call the equipment that is used to serve, reception " incident " and be used for the function in the storehouse 4058 of specific calculation.
With reference to Fig. 6, with regard to an application program, can be " being counted as " equipment 4060 with a function of code translator 2020.So receiver/decoder 2020 has the function that Any Application all be can't see.
Can give the final user with text and graphic presentation with the Presentation Function that virtual machine 4007 communicates, and final user's action is offered virtual machine 4007.Text and figure are superimposed upon on the display of televisor 2022, and the user can be by keyboard and application program 4056 interactions.Term " keyboard " comprises telepilot 2026.
Run time engine 4008 is mounted in the executable code in the virtual machine 4007 of receiver/decoder 2020 and comprises that one is used to the virtual machine explaining and run application.Engine 4008 is applicable to any operating system that comprises single task operating system (as MS-DOS).
The scheduler program that engine 4008 comprises a process sorting unit (it can receive multiple incident such as pushing button to carry out multiple action) and includes oneself is with the event queue of management from the different hardware interface.Engine 4008 also manages the demonstration of figure and text.
Drawing pulls 4008 comprises that a code load module " loads and be downloaded to the storer 2024 of code translator so that with application program 4056.Only the code of necessity is put into RAM volume 4022 or FLASH storer volume 4024, use best so that guarantee.One identification device check data downloaded is carried out any modification or is carried out the application program of any the unknown to prevent application programs 4056.
With reference to Fig. 6, with regard to an application program, can " regard " function of code translator 2020 as an equipment 4060.So receiver/decoder 2020 has the function that Any Application all be can't see.
The example of low layer equipment 4068 below is described.
LCARD equipment can make a program and the smart card that is included in the smart card reader 4036 communicate, and RCARD equipment can make a program and the smart card that is included in another smart card reader 4036 communicate.For example, these equipment can make a program remove to read the state of smart card, read the historical of smart card and send an input message to smart card.The said equipment can also advising process will block the reeve card reader, take out card and ask reset card down in the feelings that program is not asked from card reader.LCARD and RCARD equipment are that to be used to move the agreement of smart card special-purpose.The general ISO7816 agreement of using.
SCTV equipment makes a program go to check and dispose rabbet joint type (scart) outlet of leading to televisor 2022.For example, this equipment one program is gone for ask the sound characteristic of relevant above-mentioned rabbet joint type outlet information, this sound is carried out " MUTE " (noise elimination) and dynamically RGB is programmed.
TUNER (tuner) equipment makes a program remove to use tuner 4028.For example, this equipment makes a program begin to scan, read tuner parameters and tuner is programmed from the minimum frequency or the current frequency of tuner.
SERIAL (serial) equipment makes a program communicate by serial transmission line and machine, and PARALLE (walking abreast) equipment makes a program communicate by a parallel line road and machine.For example, the said equipment makes a program send a message and notify a program to receive a message by this circuit by corresponding circuit.
MODEM (modulator-demodular unit) equipment makes described receiver code translator communicate by inside half-duplex modem and the data, services of supporting V23.The MODEM device request dials and is a number, send message to data server and disconnect modulator-demodular unit connection, send the signal that receives a message, send the signal that carries out error detection and send the signal of losing or detecting carrier.
Remote equipment in the remote position operation can be any local device except limiting the port and protocol.
Except that " low layer equipment ", receiver/decoder 2020 can also comprise " high-level device " 4027, the operation of their may command receiver/decoders 2020.
The example of high-level device below is described.
MLOAD equipment make an application program load from mpeg bit stream with the corresponding mpeg data of hardware and software filter criteria portion, complete mpeg table or one group of mpeg data portion.For example, this equipment can make a program only download any once needed those data portion of application program in one group of mpeg data portion.
FDLOAD equipment automatically manages downloading by the file of serial and/or parallel port.This equipment can send beginning and finish and carry out the signal that file is downloaded by serial and/or parallel port when program needs.This equipment can be to the PROGRAMMED REQUESTS concordance list, and described concordance list comprises the PID that wants downloaded files and the deciphering PIDECM of this document.Program is loaded above-mentioned concordance list and is sent it to described equipment, and this equipment then asks file is downloaded to program subsequently.Described program is extracted PID and the PIDECM that is used for file out and is asked to carry out multi-channel demodulator so that can download said file fully from concordance list.At any time program all can be called " fload_offline " to instruct FDLOAD equipment to stop to manage serial and/or parallel port.
" device_id " comes marking equipment 4060 with unique identification.For example, with " LCARD_DEVICE_ID " sign LCARD equipment, with " RCARD_DEVICE_ID " sign RCARD equipment.
When creating new equipment 4060, can " this equipment be installed in the existing receiver/decoder 2020 by download relevant application program 4056 from the broadcasting center.
Download in receiver/decoder 2020 with application program 4056, the version of described Application inspection hardware and software, if correct, just load and represent the software module of this new equipment 4046 and require a process in the storehouse 4058 to go code with new equipment to be installed into (the FLASH storer is interior) firmware.This just can advance receiver/decoder 2020 with new function mounting flexibly and reliably under the situation that does not influence all the other softwares.
18 processes are arranged, their access device managers 4070, access means 4060 itself or carry out memory management.
Device_Open_Channel () opens the channel that leads to manager
Device_Close_Channel () closes the channel that leads to manager
Device_Open_Device () opens the channel that leads to equipment
Device_Close_Device () closes the channel that leads to equipment
Device_Event () contingency management
Device_Call () synchronization of access one equipment
Device_Io () asynchronous access one equipment
The information of the relevant equipment of Device_Info ()
Set_Buffer_outline () is defined for the memory partition of buffer zone
Get_Buffer_outline () reads the subregion of current buffer zone
Pool_Info () provides the information of relevant current buffer zone subregion
Device_Alloc_Buffer () storage allocation
Device_Free_Buffer () releasing memory
Device_Lock_Buffer () pins internal memory
Device_Info_Free_Buffer () provides the buffer zone quantity of release
Device_Info_Alloc_Buffer () lists the buffer zone after the distribution
Device_Buffer_Size () provides the buffer size after the distribution
With reference to Fig. 7, before the service of using any equipment 4060, program (such as an Application-script) must be illustrated as " client " 4076, that is to say, be illustrated as logical access method to equipment 4060 or equipment manager 4074.Described manager is given 4076 customer IDs that all will relate to of client when equipment is conducted interviews.
With process Device_Open_Channel () 4078 client 4076 is passed to equipment manager 4068, equipment manager is then composed customer ID to client 4076 with said process.Equipment manager 4074 output one " client_id " and " error_code ", described " client_id " comprises the address of variable, described variable contains the customer ID (two clients that do not have have identical customer ID) after the distribution, described " error_code " then comprises error_code " 0 " or error_code " e_client_max ", said process had successfully been finished in error_code " 0 " indication already, error_code " e_client_max " indication had reached the client's that equipment manager can manage maximum quantity already, and client's maximum quantity is generally 256.
First customer ID that is distributed is 0, all increases by 1 when calling with process Device_Open_Channel until reaching value 255 at every turn.This point with from customer list, leave out any one client and all have nothing to do.Distribute customer ID 255 and carrying out follow-up Device_Open_Channel when calling, " expire " with the indication customer list with regard to output error sign indicating number " e_client_max ", perhaps the client's that available minimum customer ID has promptly been deleted from customer list customer ID is distributed to the client.
For the client 4076 of devices illustrated 4060, client's use Device_Open_Device () 4080 is to transmit its client_id and device_id.If successfully finish this process, equipment manager is just exported an error message " 0 ", if the client does not exist, equipment manager is output " e_client_inconnu " just, if equipment does not exist, equipment manager is output " e_periph_inconnu " just, if to description of equipment equipment, equipment manager is output " e_client_max " or " w_deja_vu " just.
Available processes Device_Close_Device () is from being used for the tabulation deletion client 4076 of equipment 4060.Client_id and device_id are inputed to equipment manager, if successfully finish this process, equipment manager is just exported error_code " 0 ", if the client is unknown concerning equipment manager, equipment manager is just exported error_code " w_client_inconnu ", if equipment is unknown concerning equipment manager, equipment manager is just exported error_code " w_periph_inconnu ".
Available processes Device_Close_Channel () is from being used for the tabulation deletion client 4076 of equipment manager 4074.Client_id is inputed to equipment manager, if successfully finish this process, equipment manager is just exported error_code " 0 ", if the client is unknown concerning equipment manager, equipment manager is just exported error_code " w_client_inconnu ".Delete the client in the tabulation of this process slave unit manager 4074 and the tabulation of each equipment 4060, the client who is deleted is the client of equipment 4060, that is to say, if application program is not done like this, Device_Close_Channel () process just is this Device_Call_Device () process of each equipment calls that client of being deleted is its client.Available then Device_Open_Channel () process will be distributed to new client with the customer ID that aforementioned process discharges.
Process " Device_Info () " offers client 4076 with the information of relevant devices 4060.Client_id and device_id are inputed to equipment manager 4074, this equipment manager can generally be that the version of equipment, the maximum client's number that is used for this equipment and the actual client's number of this equipment that uses return to the client together with error_code with the information of relevant the said equipment, and described error_code indication had been finished said process already or had been unknown concerning equipment manager 4074 clients or equipment.
Process " Device_Event () " is to be used for management " unscheduled event " particular case or unexpected mode promptly to have occurred.Device_Event () process can make a client clearly from the receiver of the unscheduled event of an equipment.
The message that is used for application program that will be called " incident " is put of for example five formations of engine 4008 into.Each formation in these formations is corresponding to priority 0 to 4 (4=greatest priority, the minimum priority of 0=).
Extracting message out when passing to an application program from above-mentioned formation, engine 4008 just search includes the formation with limit priority of an incident.This incident of deletion also starts predetermined process sorting unit with this incident from described formation.
All " outside " incidents no matter be to input to the incident of explicit function or the incident that receives through interface with keyboard, all transmitted through an event interface before being handled by engine 4008.But generally any internal event that is produced by internal unit is all without said event interface but directly pass to engine 4008.
Concerning each process, last call parameters is to use the address of the set variable of equipment manager, and how its indicating equipment manager is handled order.
The reason that one unscheduled event is sent to the client depends on equipment 4060.For example, with regard to equipment LCARD DEVICE, unscheduled event comprises:
To block from card reader and withdraw from;
To block and inject card reader; Perhaps
The client resets to sticking into row.
Represent above-mentioned each incident with corresponding unique event code (being respectively " ev_lcard_extract ", " ev_lcard_insert " and " ev_card_reset ").
In order to receive unscheduled event, the client must be with the receiver of self for each incident of wishing to receive with process " device_event ".Following parameter is inputed to equipment manager:
client_id；
device_id；
Be called the order of " get_event ", it can send a unscheduled event;
Event code; And
Event Priority, it is between 0 to 4.
Several equipment can receive identical unexpected thing by identical or different priority.In this case, by specific order (according to priority and customer ID) incident is sent to each client.
For example, client 22 is to be receiver from the incident ev_lcard_extract of LCARD equipment with self according to priority.Client 32 is to be the receiver of above-mentioned incident with self according to priority, and client 14 is to be the receiver of above-mentioned incident with self according to priority, and client 43 is to be the receiver of above-mentioned incident with self according to priority.If card is withdrawn from card reader, following sequence of events will appear:
The incident ev_lcard_extract that passes to client 1 is placed in the formation corresponding to priority 4 of run time engine 4008;
The above-mentioned incident of passing to client 4 is placed in the formation corresponding to priority 3 of run time engine 4008;
The above-mentioned incident of passing to client 2 is placed in the formation corresponding to priority 2 of run time engine 4008;
The above-mentioned incident of passing to client 3 is placed in the formation corresponding to priority 2 of run time engine 4008.
With regard to some equipment, buffer zone may be relevant with unscheduled event.In this case, this equipment can distribute the sort buffer district by equipment manager 4068.
In the application programming language, the addressable parameter relevant of process with incident:
event_code；
clent_id；
Evt_paraml (size that generally has 4 bytes); And
Evt_param2 (size that generally has 2 bytes).
The accurate implication of evt_param parameter depends on the reason of the equipment and the incident of transmission.The related equipment that depends on of buffer zone and unscheduled event.If exist association, evt_paraml is just corresponding to the address data area of associated buffer.If there is no buffer zone still can send incident but evt_paraml is set to " 0 ".
If equipment has the buffer zone that is associated with unscheduled event, leave out the client in slave unit tabulation or the slave unit manager list and can cause the buffer release district, only the application program buffer zone of process " Device_Lock_Buffer " " pinning ".
Evt_param2 represents that successfully having finished said process and equipment has already obtained the result.
The client can stop to receive any unscheduled event with the order " ret_event " that replaces order " get_event ".
It is that " synchronization of access " or " asynchronous access " conduct interviews to equipment 4060 by dual mode that equipment manager 4074 can make client 4076.
The synchronization of access of use " Device_Call " is a kind of method of access means proprietary feature, and this method does not comprise the response from equipment is put in the formation of run time engine 4008; Said response can obtain immediately.In general, when the hardware interface of configuring receiver/code translator 2020, use said process.
The client can utilize said process by equipment manager following parameters to be inputed to equipment:
client_id；
device_id；
" call_cmde ", it comprises will be by the action type of equipment execution.For example, with regard to the SERIAL equipment that the permission program communicates by serial link and machine, order " seral_setup " can form the configuration of serial link;
" em_adr ", it comprises the address of the storage unit of importing data;
" rec_adr ", it comprises the address of the storage unit that equipment must be written to output data.
In case finished client institute requested operation, equipment is output " call_report " just, and it comprises ruuning situation report.Call_report generally comprises in the report of the predetermined quantity that can issue the client.Equipment manager 4074 is issued client 4076 with error_code, and error_code generally comprises one of following content:
e_client_inconnu；
e_periph_inconnu；
" e_cmde_inconnu ", it is the unknown client that is notified to order;
" e_report_periph ", it is the proprietary mistake of equipment; And
" 0 ", said process has successfully been finished in its indication.
When receiving error_code " 0 ", described equipment only is written to output data the address of the storage unit that parameter " rec_adr " identified.
Device_call can stop other all application programs to finish operation until described equipment.
The asynchronous access of use " Device_Io " is a kind of method of access means proprietary feature, and this method comprises waits for a response.For example, with regard to SERIAL equipment, order " seral_send " sends message by serial transmission line.(searched for before any " overtime " parameter that presets) after successfully having transmitted all data, described equipment is to the program announcement of transmitting messages.In the time can obtaining this report, just incident is put in the formation of engine 4008, arrive with notification event.
The client can utilize said process by equipment manager following parameters to be inputed to equipment:
client_id；
device_id；
" io_cmde ", it comprises will be by the action type of equipment execution;
Finish relevant event code with aforesaid operations;
The Event Priority relevant with incident;
Em_adr, and;
rec_adr。
In case finished client institute requested operation, equipment is output " io_report " just, and it comprises ruuning situation report.
Io_report generally comprises and two reports (" e_not_periph " and " 0 " relevant with incident in the report of the predetermined quantity that can issue the client, " e_not_periph " indication client can't use institute's information requested, " 0 " indication can use institute's information requested)) in one.
In case receive report " 0 ", equipment manager is just issued error_code client 4076, and error_code one ship comprises one of following content:
e_client_inconnu；
e_periph_inconnu；
e_cmde_inconnu；
" e_cmde_inconnue ", its indication event code is unknown;
" e_priorite_inconnue ", its indication priority is unknown;
e_report_periph；
0。
Should be realized that, more than be to illustrate of the present inventionly by way of example fully, can improve details within the scope of the invention.
Can provide disclosed each feature in this instructions and (under suitable situation) claim and the accompanying drawing independently or with any suitable array configuration.
In above-mentioned most preferred embodiment, realized some feature of the present invention with computer software.But it is very clear that yes concerning the expert, and all available hardware realizes any one in these features.In addition, should be realized that, but electricity consumption or similarly signal realize with hardware, computer software or function that similar means realized.
Cross reference our each common unsettled application, all these applications all have the identical submission date, these applications are entitled as: " signal produces and broadcasting " (attorney docket PC/ASB/19707), " smart card and the receiver that use for the receiver of encrypted broadcast signals " (attorney docket PC/ASB/19708), " broadcasting and receiving system with and conditional access system (attorney docket PC/ASB/19710); " from transmitter by the receiver/decoder downloading computer file to computing machine " (attorney docket PC/ASB/19711); the transmission and the receptions of other data " TV programme and " (attorney docket PC/ASB/19712); " data download " (attorney docket PC/ASB/19713); " computer memory organization " (attorney docket PC/ASB/19714); " exploitation of TV or Radio Control System " (attorney docket PC/ASB/19715), " from the data stream that is sent, extract data segment (attorney docket PC/ASB/19716); " access control system " (attorney docket PC/ASB/19717); " data handling system " (attorney docket PC/ASB/19718), " broadcasting and receiving system and receiver/decoder thereof and telepilot " (attorney docket PC/ASB/19720).This paper has quoted the content of these files.Above-mentioned application documents inventory has comprised the application.
Claims (19)
1, a kind of method that at least one assembly of one computer system is conducted interviews by program, described method comprises the following steps:
The logical device relevant with each corresponding assembly is stored in the said system, and described each logical device has the corresponding apparatus sign;
One program identification is composed to said procedure; And
From said procedure, one signal that comprises the device identification of said procedure sign and each logical device exported to a shared interface between described program and each logical device, to form the communication channel of aforementioned program and each logical device by above-mentioned interface.
2, method as claimed in claim 1 is characterized in that, described signal also comprises an order, and it can make described program receive the message of an output from respective logic equipment, the state variation of the assembly that this message indication is relevant with described logical device.
3, method as claimed in claim 2 is characterized in that, above-mentioned message temporarily can be stored in the line-up device of aforementioned calculation machine system, so that pass to said program later on.
4, method as claimed in claim 3, it is characterized in that, described line-up device comprises a plurality of formations, each formation all has corresponding priority level, the order of described program is passed to message in this priority indication from above-mentioned line-up device, and described signal also comprises the priority that aforementioned messages temporarily is stored in formation wherein.
5, the method that at least one assembly of one computer system conducted interviews by a plurality of programs of the method for above-mentioned any one claim of a kind of usefulness, each program visits described assembly by aforementioned interface.
6, a kind of method that transmits data between program and computer system component, this method comprises the following steps:
Method with above-mentioned claim 1 conducts interviews to described assembly by program; And
From said procedure, comprise that with one the signal of the device identification of said procedure sign and logical device exports to a shared interface subsequently, with the order of instructing an assembly to operate, will export to aforementioned shared interface by the data of above-mentioned logical device are exported in the address and being used for that described logical device inputs to the data of aforementioned components by said modules address by associated logical device.
7, a kind of method that transmits data between program and computer system component, this method comprises the following steps:
Method with above-mentioned claim 4 conducts interviews to described assembly by program; And
From said procedure, comprise that with one said procedure identifies and the signal of the device identification of logical device is exported to a shared interface subsequently, with the order of instructing an assembly to operate by associated logical device, before passing to described program, wherein temporarily store the priority of the formation of a message, export to aforementioned shared interface by the data of above-mentioned logical device are exported in the address and being used for that described logical device inputs to the data of aforementioned components by said modules address, said message is state variation that export from respective logic equipment and the assembly that indication is relevant with described logical device.
8, the method for any one claim as described above is characterized in that, can aforementioned program and/or each logical device be inputed to aforementioned calculation machine system by an assembly.
9, the method for any one claim as described above is characterized in that described each assembly includes at least one in mpeg stream tuner, serial line interface, parallel interface, modulator-demodular unit and the smart card reader.
10, a kind of foregoing basically method that at least one assembly of computer system is conducted interviews by program or the method that between program and computer system component, transmits data.
11, a kind of equipment of at least one assembly of computer system being conducted interviews by program of being used for, the logical device relevant with each corresponding assembly is stored in the said system, and described each logical device has the corresponding apparatus sign, and aforementioned device comprises:
Be used for a program identification is composed device to described program; And
Be used for according to exporting from aforementioned program and comprising that the signal of the device identification of said procedure sign and each logical device forms the device of the communication channel between described program and each logical device.
As the equipment of claim 11, it is characterized in that 12, described equipment also comprises and is used to make described program to receive the device of an output from the message of respective logic equipment, the state variation of the assembly that described message indication is relevant with described logical device.
As the equipment of claim 11, it is characterized in that 13, described computer system also comprises line-up device, it be used for temporary transient storage by the message of aforementioned logical device output so that pass to said program later on.
As the equipment of claim 11, it is characterized in that 14, above-mentioned line-up device can comprise a plurality of formations, each formation all has corresponding priority level, and the order of described program is passed to message in this priority indication from above-mentioned line-up device.
15, as the equipment of claim 11 to 14, it is characterized in that, described computer system also comprises such device, and the data storage that it is used for being inputed to the data of described assembly by aforementioned logical device and exporting to aforementioned logical device by described assembly is to said shared interface.
As the equipment of claim 11 to 15, it is characterized in that 16, described each logic module links to each other with corresponding associated component by device driver.
17, a kind of receiver/decoder that is used to receive program signal, it comprises the equipment as claim 11 to 16.
18, as the receiver/decoder of claim 17, it is characterized in that described receiver/decoder also comprises the device that is used to receive compressed MPEG, is used for deciphering to the received signal with device that TV signal is provided and the device that is used for described TV signal is offered televisor.
19, basically as this paper with reference to described equipment of accompanying drawing or receiver/decoder.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP97400650 | 1997-03-21 | ||
| EP97400650.4 | 1997-03-21 | ||
| PCT/EP1997/002115 WO1998043172A2 (en) | 1997-03-21 | 1997-04-25 | Access control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1260056A true CN1260056A (en) | 2000-07-12 |
Family
ID=26070210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97182171A Pending CN1260056A (en) | 1997-03-21 | 1997-04-25 | Access control system |
Country Status (14)
| Country | Link |
|---|---|
| EP (1) | EP1055176A2 (en) |
| JP (1) | JP2002512713A (en) |
| CN (1) | CN1260056A (en) |
| AU (1) | AU742213B2 (en) |
| BR (1) | BR9714603A (en) |
| CA (1) | CA2284867A1 (en) |
| HU (1) | HUP0004141A2 (en) |
| IL (1) | IL131936A0 (en) |
| NO (1) | NO994539L (en) |
| NZ (1) | NZ500205A (en) |
| PL (1) | PL336907A1 (en) |
| TR (1) | TR199902263T2 (en) |
| WO (1) | WO1998043172A2 (en) |
| ZA (1) | ZA973612B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100377125C (en) * | 2003-06-12 | 2008-03-26 | Lg电子有限公司 | Method for making label of external AV apparatus and apparatus using the same |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0893765A1 (en) | 1997-07-24 | 1999-01-27 | CANAL+ Société Anonyme | IEEE 1394 Set Top Box device driver |
| US20020073218A1 (en) * | 1998-12-23 | 2002-06-13 | Bill J. Aspromonte | Stream device management system for multimedia clients in a broadcast network architecture |
| EP1304871A3 (en) * | 2001-08-21 | 2003-06-18 | Canal+ Technologies Société Anonyme | Method and apparatus for a receiver/decoder |
| CN102768843A (en) * | 2012-03-28 | 2012-11-07 | 新奥特（北京）视频技术有限公司 | User-configurable cataloguing method and system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63163944A (en) * | 1986-09-17 | 1988-07-07 | インタ−ナショナル・ビジネス・マシ−ンズ・コ−ポレ−ション | Application communication system |
| US4855905A (en) * | 1987-04-29 | 1989-08-08 | International Business Machines Corporation | Multiprotocol I/O communications controller unit including emulated I/O controllers and tables translation of common commands and device addresses |
| US5179708A (en) * | 1989-04-07 | 1993-01-12 | At&T Bell Laboratories | System inhibiting message delivery to destination process until priority of process excuting on distination processor is no higher than priority of sending process |
| CA2044022A1 (en) * | 1990-06-28 | 1991-12-29 | Miriam A. Nihart | Common agent computer management system and method |
| US5206936A (en) * | 1990-08-31 | 1993-04-27 | International Business Machines Corporation | Apparatus for exchanging channel adapter status among multiple channel adapters |
| JPH05252228A (en) * | 1992-03-02 | 1993-09-28 | Mitsubishi Electric Corp | Data transmitter and its communication line management method |
| US5448568A (en) * | 1994-04-28 | 1995-09-05 | Thomson Consumer Electronics, Inc. | System of transmitting an interactive TV signal |
-
1997
- 1997-04-25 CN CN97182171A patent/CN1260056A/en active Pending
- 1997-04-25 HU HU0004141A patent/HUP0004141A2/en unknown
- 1997-04-25 EP EP97918155A patent/EP1055176A2/en not_active Ceased
- 1997-04-25 TR TR1999/02263T patent/TR199902263T2/en unknown
- 1997-04-25 BR BR9714603-0A patent/BR9714603A/en unknown
- 1997-04-25 ZA ZA9703612A patent/ZA973612B/en unknown
- 1997-04-25 CA CA002284867A patent/CA2284867A1/en not_active Abandoned
- 1997-04-25 PL PL97336907A patent/PL336907A1/en unknown
- 1997-04-25 JP JP54087898A patent/JP2002512713A/en active Pending
- 1997-04-25 AU AU26385/97A patent/AU742213B2/en not_active Ceased
- 1997-04-25 NZ NZ500205A patent/NZ500205A/en unknown
- 1997-04-25 WO PCT/EP1997/002115 patent/WO1998043172A2/en not_active Application Discontinuation
- 1997-04-25 IL IL13192697A patent/IL131936A0/en unknown
-
1999
- 1999-09-17 NO NO994539A patent/NO994539L/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100377125C (en) * | 2003-06-12 | 2008-03-26 | Lg电子有限公司 | Method for making label of external AV apparatus and apparatus using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| AU742213B2 (en) | 2001-12-20 |
| TR199902263T2 (en) | 2000-03-21 |
| NO994539L (en) | 1999-11-22 |
| HUP0004141A2 (en) | 2001-05-28 |
| PL336907A1 (en) | 2000-07-17 |
| NO994539D0 (en) | 1999-09-17 |
| AU2638597A (en) | 1998-10-20 |
| NZ500205A (en) | 2001-11-30 |
| IL131936A0 (en) | 2001-03-19 |
| ZA973612B (en) | 1998-02-23 |
| CA2284867A1 (en) | 1998-10-01 |
| EP1055176A2 (en) | 2000-11-29 |
| WO1998043172A3 (en) | 2000-09-21 |
| WO1998043172A2 (en) | 1998-10-01 |
| JP2002512713A (en) | 2002-04-23 |
| BR9714603A (en) | 2000-05-16 |
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