TWI224277B - Method displaying redirected data on remote computer and computer system using the method - Google Patents

Abstract

A method displaying redirected data on remote computer can display the data displayed on a remote computer on a host system in connection with the remote computer. The method is that can periodically issues an interrupt signal to a processor of the remote computer, enabling the processor to periodically enter into an independent operation mode. Whenever the processor enters the independent operation mode, the processor will grab the data displayed on a display device of the remote computer in a display processing unit and transit the display data to the host system so as to conveniently facilitate the remote monitoring and control of system manager.

Description

Mei, description of the invention: [Technical field to which the invention belongs] The present invention relates to a method and a computer system for remotely ordering bread and bread, and particularly to a computer system using the virtual king 5 to cry 5! Method and computer system for cutting display data of a remote computer to A γ Betting in a stand-alone mode to a host computer. [Previous technology] For computer system managers, it is necessary to grasp the working state of the central host from time to time, especially in distributed computer system architectures. It is often to set up 10 servers first, and then use each server. Server to provide the services required by many clients. However, a common problem is that the place where the server is built is often far from the place where the system administrator is located. Therefore, when there is a problem with the remote server, the system administrator must go to the place where the server is located. Can solve the problem, causing waste of time and cost. 15 Wei Yu then, many auxiliary tools or methods with remote management capabilities were derived, enabling managers to use a host to connect to the feeder through the network, and to directly control the host through the host. The server performs remote monitoring ^ One of the methods is to use the so-called bus-mastering, that is, first install a 20-amp & bus control card in the remote server, and use this control card to Capturing the display data in the display chip (VGA chip) in this ship and redirecting the display data to the host, so that the host can display the working status of the server, but its disadvantage is that it is only compatible with specific types of display Chip, so its compatibility is not high. Another better method is, for example, US Patent No. 6,17,0021, "Heavy 4 New & Toward Tools", the following is an excerpt from the full text, and is incorporated into this case as * testing materials . As shown in FIG. 1, its architecture mainly includes a host 50G and m, _, and the connection between the host and the server ⑼0 is transmitted through the modem 61. The server is equipped with a processor 1 62, a microcontroller 63 connected to the processor 62, a buffer 64, a display register 65, and a series of devices to control the cry 66. °. The main method is that when the system administrator uses the keyboard 501 of the host computer 500 to input data, it will be transmitted to the microcontroller by the modem 61, and an interrupt will be generated by the interrupt signal generator 631 in the microcontroller 63. (ystem manamgent intermpt, SMI), forcing the processor 62 to enter the system managemem (smm), and the processing after entering the system s pole type "62 will read the specific SMM computer code (S Read handler rmines) 621 so that the display # data is retrieved from the display buffer 64, display, and memory 65, and optimized by the optimization processor 632, and then transmitted to the host 500 The display 502 is provided for the system administrator to monitor the operation of the server 600 through the host 500. The above method makes use of the system management mode of the processor 62, so the excessive transmission of display data will not affect the operation of the device, the operating system or the application program in 600. In other words, since the processor 62 enters the system management mode, the operation of the operating system and applications is suspended. After the system management mode is restored to the normal mode, it can continue the processing operations of the previous operating system or applications, so there is no The problem of lack of phase purity. However, because this method requires a built-in microcontroller: 3, to

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Zhengzheng i: iiA a No. 921 1 6573 Application Specification Amendment Page (Amendment Date: 93.8) It optimizes display data and generates interrupt signals, etc., so its construction cost is high. Secondly, because it waits for reading requests in a passive way, the processor 62 will be triggered to send display data only after the system administrator issues an instruction through the keyboard 501, so its timeliness is poor. [Summary of the Invention] In view of the fact that the previous method of redirecting display data is not perfect, the purpose of this document is to provide a remote computer that can actively display it.

Display data redirection to a remote computer on the host computer. Display data redirection method and computer system using the method. Therefore, in a preferred embodiment, the computer system of the present invention can transmit the information to a remote host. The computer system includes a processor, a display processing unit, and a firmware body. ), AA is a trigger unit.

The processor can receive an interrupt signal to enter-independent operation mode 'The display processing unit is connected to the processor and can generate the display f material which is not displayed on the display n'. For the computer code to be executed when the processor enters the closed operation mode, the trigger unit can periodically send the interrupt signal to the processor, so that the processor enters the independent operation f mode periodically and executes it. Data computer program = code 'to enable the processor to periodically capture the display data of the display processing unit and transmit the display data to the remote host. Ince, the brain system can actively rewrite its display data to the remote host, so that the line manager can know the day and night of the computer system through the remote host. [Embodiment] 6 1224277 | > The previous and other technical contents, features, and effects of the present invention are being replaced on the page. It will be clear in the following detailed description of a preferred embodiment with reference to the accompanying drawings. understand. Referring to FIG. 2, a decentralized network architecture using the present invention is shown. 5 Under this architecture, a server 100 can be used by multiple clients, and the server is 100 connected to a remote host 200. . The figure shown in Figure 2 is to simplify the description. In fact, there can be more than one server 100 for many clients, and the number of remote hosts 2000 is not limited to one. 10 The system administrator can monitor the temple server 100 through the remote host 200. Each host 200 has a display 201 and an input device 202. The display 201 refers to a cathode ray tube type display screen (crt), or a similar flat panel display such as a liquid crystal display screen (LCD), etc .; The input device 202 refers to, for example, a keyboard, a mouse, a trackball, a track track, track pad, a touch panel, a tablet, and the like. In other words, the system manager can watch the current operation of the server 100 through the display 200 of the remote host 200, and can also control the server 100 through the input of the input device 202, so as to achieve the purpose of remote monitoring. This will be explained in detail below. 20 Referring to FIG. 3, the server 100 has a processor, a network interface card 2, a display processing unit 3, a firmware 4, a trigger unit 5, and a timer 6. Processor 1, in this embodiment, refers to processors of Intel 80386 and later types, such as lnteipentiuml, PentiumII, etc., or 7 1224277 is a processor such as K5 and K6 produced by AMD, which can operate independently Work in mode. The so-called independent operation mode refers to the processor's operation can not be affected by any application or operating system, and can execute the corresponding s-read computer code in the main memory-independent address space. (SMM subroutines). In addition to the system management mode (SMM) described in the previous technology, there are still in-line analog (in eireuit simula⑽, ICE) modes [or debugging mode (probing mode, probing mode, etc.)], The online simulation mode is a processor mode set for the convenience of program debugging. In this mode, the processor can also be the same as the system management mode, with support for network drivers, system peripheral drivers, Data security monitoring and other capabilities. The difference is that the interrupt k number that triggers the processor to enter the online simulation mode is R / S ## (take Intel Pentium processor as an example). Of course, in the server 100, in addition to the above-mentioned main memory 10 for the processor 1, it is necessary to have a read-only memory (ROM) for storing a basic input-output system (BIOS) (not shown in the figure) (Shown) and other components, as this is no different from the general computer system architecture, it will not be described separately. The network I interface card 2 is connected to the processing unit 1, and through the network interface card 2, the remote host 200 and the server 100 can be connected through the local network or the Internet. 33 (fram The head processing unit 3 is connected to the processor through a system bus, such as a PCI bus, AGP bus, etc., and the display processing unit 3 has a display controller 31 (VGA controller) and a basic display input. Output system (VGA BIOS) 32, and a frame buffer 8 1224277 buffer). The display controller 31 refers to a general graphics processing chip. The frame buffer 33 is used to store data to be displayed on the display of the server 100. Generally, the frame buffer 33 has a plurality of buffer units. For example, one of the buffer units is used to store the picture currently displayed on the server 5-10 monitor 101, and the other is used to store the picture being drawn by the display controller 31.

Display Basic Input Output System (hereinafter referred to as VGA BIOS) 32. In this example, ‘specially’ refers to a VGA BIOS compatible with the VESA BIOS Extension (hereinafter referred to as VBE) version 2.0 or above. In other words, call 1 by a specific function (VBE Function 4F0Ah: Return VBE

Protected Mode Interface, which returns the function entry point of VBE in protected mode. It can be in the protected mode of processor 1 (suitable for multi-work system operating mode, that is, the normal mode). From this, VGA BIOS 32 Function call through VBE includes (but is not limited to): Function 4F00h 15-Return VBE Controller Information, returning graphics card information;

Function 4F01h-Return VBE Mode Information, returns information for a specific display mode (such as: 1024x768 True Color); Function 4F03h-Return Current VBE Mode, returns the current display mode; and Function 4F04h-Get / Restore State, returns / Back to 20 to save the current setting status of the graphics card, etc., it is known that the initial address of the current day in the frame buffer 33, the actual width and length, and the color palette, etc. For the VGA BIOS32 without the protected mode entry point, you can also use the “TripleFault” or “LOADALL” instruction to temporarily leave the CPU in protected mode and enter the real mode (Real 9 1224277 Poverty Alleviation 2 is used for various functions on the open Function call, it is learned that the frame buffer is the relevant information in 33. Take the knife body 4 is used to store the above SMM computer program, 5 In her example, the carcass body 4 is a computer code. Non-sex memory, such as read-only memory or flash memory (M), these SMM computer code is used to load the computer into the main memory 10 after the computer system is turned on, until the processor i enters the system management In the mode, it is captured and executed in the main memory: 0, or when processor 1 enters the system management mode, 10 ^ ^ is directly captured and executed in Lexus 4. In this embodiment, the code can enable processing. The device 1 captures the display data in the display processing unit 3 ^ The detailed description in this section will be described in the following-step by step;;. It is worth mentioning that in the SMM code, you can add a "na "Instructions" and when the processor does this When instructed, it will leave the 15-core system management system and return to the original normal mode, so that the operating system can control the processing benefit 1. Similarly, if you use the online simulation mode, you can use Force the instruction to return the processor i to the normal mode. 20 β touch "Unit 5" is connected to the processor 1. The trigger unit 5 is composed of simple f logic circuits, and its purpose is to send only periodically. The system management interrupt is received on the processor 1 so that the processor 1 can be repeatedly triggered to enter the system management mode. 10 °° 6 means a periodic pulse generator that can generate a periodic pulse. The 'wave' enables the trigger unit 5 to repeatedly generate a system management interrupt signal based on this pulse wave. In particular, it should be noted that, in a general 10 computer system, the timer 6 does not need to be separately installed, for example, the master can be used The keyboard controller on the T board (not shown in the figure) can be used to provide the clock signal to the trigger unit $ by using the time, ri (ck) or 晶片 RTC chip in ⑽d to achieve the same purpose as above. Please refer to _ 4 relies ① ～ ④ According to the above-mentioned green step 51, the present invention first uses the trigger unit 5 to send the interrupt to the processor i, so that the processor can enter the aforementioned independent operation mode as described in step 52. Then, as in step ^, when you are in F mode, you will read the SMM computer code, =: _ 32, and read the frame from VGA delete 32 :: guangzhong Start address, length, actual width, length, etc. and read the picture data currently stored in the frame buffer 33 from the frame buffer 33. Machine 2 0tl 'as step 54' processor 1 will display The information is transmitted to the remote host 200's display + cry, Λ ^,, °. The system manager on G1 can use the screen on the remote host to display the current information. 1 has transmitted the displayed data to the blame actor. Tian Tianli mouth management mode and the port will automatically jump after 200 minutes. Off-system electricity rII. Set to the normal mode, and continue processing the exhaustion that has been previously suspended '(step 55). Since the trigger unit 5 sends 糸: management interrupt signal periodically, it returns from step 55 to step. ,in this way

If Γ, the remote host's fine display 201 will continuously display the display data of the servo state 100. —Therefore, the frequency of the line interrupt signal sent by the trigger unit 5 determines the display frequency of the screen on the host 200. For example, the general screen is renewed and the new frequency is 30 ~ 75Hz, so it can be used. The timer 6 provides a clock signal in this frequency range, so that the triggering unit 5 sends a system management interrupt signal according to the clock k number, so it can determine the frequency of the day-to-day update displayed on the remote host 200. In particular, the system manager can also use the input device 202 to control the server 100, that is, the signal input by the system manager through the input device 202 (such as a keyboard) enters the system at the processor 丄In the official mode, this input signal will also be redirected to the corresponding controller on the server i 00 (for example, keyboard controller, not shown), to be processed. 1 After returning to the normal mode, this input signal is read in, so that the system administrator can directly enter the server 100 as if it were in front of the server 100. Since this part is roughly the same as the previous technology, it will not be described again. As can be seen from the above description, although the server 100 is taken as an example in this embodiment, as long as it is a general computer system, the present invention can be used to monitor the fallback, and it is not limited to the server 100. " Not 5 above, the present invention utilizes the trigger unit 5 to periodically send the system official interrupt signal, so that the processor 1 can enter the system management mode periodically to actively transmit the display data on the servo controller i00 to the remote host 200. The concept of broadcasting above enables the system administrator to continuously receive the daytime surface of the server 100, which is convenient for the system administrator to monitor and achieve the objective of the present invention. However, the above are only the preferred embodiments of the present invention. When the scope of implementation of the present invention cannot be limited in this way, that is, the simple equivalent changes and modifications made in accordance with the patent application scope of the present invention and the contents of the invention specification Both 1224277 should still fall within the scope of the invention patent. [Brief Description of the Drawings] Figure 1 疋 v is a diagram illustrating the redirection tool described in US Patent No. 6,170,021; Figures 2 疋 7 ^ and Figures illustrate a preferred embodiment of the present invention applied to a decentralized network In the road structure; = Second illustration !, Figure 'Describes the preferred embodiment of the-server; Weight = 7 Cantonese indicates that the preferred embodiment is re-displaying the display data to ¥ 4, and processing n is switched in Beizhu. In the A-hearted independent operation mode, FIG. 5 is a flowchart illustrating the steps performed in the preferred redirection. Order Display Information 13 1224277

[Description of the main components of the diagram] 100 Server 5 Trigger unit 101 Display 6 Timer 200 Host 31 Display controller 201 Display 32 Display basic input / output system 202 Input device system 1 Processor 33 Frame buffer 2 Network Interface card 10 Main memory 3 Display processing unit 51 ~ 55 Step 4 Firmware 14

Claims (1)

^ 24277 --II ....:, .............:: ,, ...; Pick up and apply for patent scope: 丨 .1 = System 'can transmit Gu Shi to the computer System — on the host computer, the computer system includes: Industry model: processor 'can accept — interruption signal trigger and enter _ independent operation two: processing unit' is connected to the processor, capable of producing a significant state The display data above; M =: there are plural computer codes for the processing 11 to enter the independent operation mode; and the production == yuan 'periodically sends the interrupt signal to the processor, so that I q enters the independent operation mode and executes the electrical code, so that the processor cycle data and __ materials are transmitted to the remote 1: place ^^ m? A computer system, wherein the independent operating system (SMM). Among them, the independent fj woman declared the patent scope! The computer system business mode described in this item is the online analog mode (ICE mode). Among them, the assertion that the computer system number described in the female patent application item 2 is a system management interrupt (SMI) signal. 5 · According to the computer system described in item j of the scope of patent application = connected timer, the timer can provide periodic two signals to the trigger generation; σσ ^ ^ is too "every, so that the early 70 according to the pulse signal The periodic deduction generates the interruption signal. 6. The computer system as described in item 1 of the scope of the patent application, wherein the 15 silkworms are not allowed to g7L has a display controller, a technology remote from the display controller Frame buffer, and the display basic input wheel-out system (VGA / 0S) read by the 'Bayer's industrial device' § Hai processor can be used in the display basic input-output system- Get the relevant information of the display data. One way to redirect your computer's display data is to display a remote computer 7 '' on a host computer connected to the remote computer. Far: Ermei has a processor and a presentation processing unit connected to the processor and capable of generating and displaying information. The method includes the following steps: A) | S 迗 An interrupt signal is sent to the processor, so that The processor enters a stand-alone operation In the "Hai independent operation mode", the display data is captured from the processor to the display processing unit; C) the display data is transmitted from the processor to the host; and the above steps are performed sexually A) to c). 8. Please request the remote computer display data described in item 7 of the patent scope to repeat: Method 'wherein' step B) is from the processor to the display processing shore =-display the basic input and output system to read the The display data is hidden and the color value of the display material is read from the frame buffer of the display processing unit. 9. If the 7th item of the patent scope is declared, the computer display data redirection method is adopted. Among them, the independent author Zhang Jin ^, 、, and 疋 system management mode (SMM). 10 · As described in item 7 of the scope of the application for patents, and re-introduced 16 1224277 from the display data, "rewarding" eggs, the method, where mode) ° No. 92116573 application specification amendment page (revision date · 93 7) The independent operation mode is an online simulation mode (ICE 1 1. The remote computer display data redirection method described in item 9 of the scope of patent application, wherein the interrupt signal is a system management interrupt (SMI) signal. 12 The remote computer display data redirection method as described in the scope of application patent 胄 9, which further includes a step between step c) and step d) to restore the processor from the independent operation mode to the normal mode. Steps. 17