JP2009054096A - Server unit and server processing program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently transmit rendering data, generated according to an application program, at appropriate timing in a server unit for displaying by transferring screen rendering data generated in the server unit to a client unit. <P>SOLUTION: The rendering timing of a screen rendering data is set by dividing the rendering time period T of the screen rendering data, generated by the application program being initiated according to an event input from the client unit, by a rendering number of times M having either once at a low communication speed (less than 128 kbits/s), five times at a medium speed (128 kbits/s to 1 Mbits/s), or 50 times at a high speed (exceeding 1 Mbits/s). The rendering data in which the above screen rendering data is updated is transferred to the client unit according to the above set rendering timing, and displayed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a server apparatus and a server processing program for transmitting and transferring screen drawing data generated by a server apparatus to a client apparatus for display in, for example, an SBC (Server Based Computing) system.

  In a conventional server-client system, for example, there is an SBC (Server Based Computing) system in which a desired application program is activated and executed on the server device side by remote operation from the client device.

  In this SBC system, display drawing data generated by an application program of a server device in response to an operation input of the client device is transmitted and transferred from the server device to the client device and displayed every time the drawing is updated ( For example, see Patent Document 1.)

  In general, display screen drawing data generated by an application program of a computer system includes, for example, a frame constituting a window on the outermost screen, a menu bar and a task bar in the periphery of the window, an inner window frame, and operations in the window. It is generated by sequentially overwriting various component elements (widgets) such as buttons from the lower component to the upper component in the screen.

Each time the drawing data is updated, that is, every time the widget is overwritten and merged (synthesized) with the existing screen drawing data, the server device of the SBC system displays the overwritten widget in the screen position information. At the same time, it is transmitted and transferred to the client device, and the display is updated.
JP 2004-192348 A

  For this reason, in particular, the time required to generate the screen drawing data executed in accordance with the application program of the server device is long due to the large number of widgets constituting the screen or the complexity of the screen. When the communication speed (bandwidth) is low, the drawing data generated by the server device in response to a request from the client device is transmitted and transferred to the client device until it is completed and displayed as one screen. It takes time and becomes a problem of poor responsiveness.

  Moreover, by transmitting and transferring for each widget constituting the drawing data, it takes time for data transfer each time, and the display state is changed step by step, resulting in a poorer response result.

  The present invention has been made in view of such a problem, and an object of the present invention is to provide a server device and a server processing program capable of efficiently transmitting drawing data generated according to an application program at an appropriate timing. And

  The server device according to claim 1 is a server device that generates drawing data in accordance with a built-in application program, transmits the data to a client device, and displays the drawing data. The drawing data generated in accordance with the application program is drawn by overwriting. Drawing data storage means for storing, communication speed acquisition means for acquiring the communication speed with the client device, and drawing for defining the number of times of drawing according to the communication speed with the client device acquired by the communication speed acquisition means And a data transmission means for reading the drawing data stored in the drawing data storage means according to the number of drawing times defined by the drawing number defining means, and transmitting and transferring the drawing data to the client device. .

  The server device according to claim 2 is the server device according to claim 1, wherein the drawing time defining means defines the drawing time from the start time of the drawing data corresponding to each of the plurality of built-in application programs. The data transmission means is stored in the drawing data storage means at a timing set based on the drawing time defined by the drawing time defining means and the number of drawing times defined by the drawing number defining means. The drawing data is read out and transmitted to the client device.

  The server device according to claim 3 is the server device according to claim 2, wherein the data transmission unit sets the drawing time defined by the drawing time defining unit to the number of drawing times defined by the drawing number defining unit. The drawing data stored in the drawing data storage means is read out and transmitted to the client device at a timing set by dividing by.

  The server device according to claim 4 is the server device according to any one of claims 1 to 3, wherein the drawing number defining unit is connected to the client device acquired by the communication speed acquiring unit. It is characterized by defining a smaller number of times of drawing when the communication speed is slower than when the communication speed is fast.

  The server device according to claim 5 is a server device that generates drawing data in accordance with a built-in application program, transmits the data to the client device, and displays the drawing data. The drawing data generated in accordance with the application program is drawn by overwriting. Drawing data storage means for storing the drawing data, drawing completion judging means for judging completion of the drawing data stored by the drawing data storing means, and completion of the drawing data generated by the drawing completion judging means according to the application program. And a data transmission means for reading the drawing data stored in the drawing data storage means and transmitting and transferring the drawing data to the client device when it is determined.

  A server processing program according to claim 6 is a server processing program for controlling a computer of a server device that generates drawing data in accordance with a built-in application program, and transmits and transfers it to a client device for display. The drawing data storage means for drawing the drawing data generated in accordance with the application program by overwriting and storing it in the memory, the communication speed acquisition means for acquiring the communication speed with the client device, and the communication speed acquisition means A drawing number defining means for defining the number of times of drawing corresponding to the communication speed with the client device, and reading the drawing data stored in the drawing data storage means according to the number of drawing times defined by the drawing number defining means and transmitting and transferring to the client device Data transmission Means, is characterized in that to function as a.

  A server processing program according to claim 7 is a server processing program for controlling a computer of a server device that generates drawing data according to a built-in application program, and transmits and transfers the drawing data to a client device for display. A drawing data storage means for drawing the drawing data generated according to the application program by overwriting and storing the drawing data in a memory; a drawing completion judging means for judging completion of the drawing data stored by the drawing data storage means; When the completion of the drawing data generated according to the application program is determined by the determination unit, the drawing data stored in the drawing data storage unit is read out and transmitted as a data transmission unit to the client device. It is a symptom.

  According to the present invention, it is possible to provide a server device and a server processing program capable of efficiently transmitting drawing data generated according to an application program at an appropriate timing.

  Embodiments of the present invention will be described below with reference to the drawings.

(First embodiment)
FIG. 1 is a block diagram showing a configuration of an SBC (Server Based Computing) system according to an embodiment of a server apparatus of the present invention.

  This SBC system includes a server device 10 and a plurality of client devices (Thin clients) 20 connected to a network N composed of a LAN (Local Area Network) or a WAN (Wide Area Network).

  The server device 10 has a plurality of application programs such as a document creation processing program, a spreadsheet processing program, a presentation material creation program, a mail processing program, an Internet connection processing program, and a Web display program, and is connected to the server device 10. It is activated in response to an operation input (input event) signal from the client device 20,.

  In this server device 10, the display output drawing data generated on the terminal frame buffer 14a in accordance with the execution of the application program according to the operation input signal from the client device 20,. It is transmitted (transferred) to the client device 20 of the access source.

  In the client devices 20,..., The drawing data transferred from the server device 10 is decompressed and expanded in the frame buffer 25 and displayed on the display unit.

  That is, each client device (Thin client) 20 in the SBC system has an input function corresponding to a user operation such as a keyboard and a mouse and an output function to an LCD display unit and a printer as main functions. The server device 10 does not have at least various application functions and data file management functions.

  And the data file produced | generated with the various processes started and performed in the server apparatus 10 according to the operation input (input event) signal from the client apparatus 20 ... is fundamentally in the said server apparatus 10. Alternatively, it is stored and stored for each user account or as a shared file in a storage device such as a magnetic disk managed and managed by the server device 10.

  FIG. 2 is a block diagram showing a circuit configuration of the server device 10 in the SBC system.

  The server device 10 includes a CPU 11 as a computer, and a ROM 13, a RAM 14, a frame buffer RAM 15, and a display device 16 are connected to the CPU 11 via a bus 12.

  Further, a communication interface (I / F) 19 with a key input device 17 such as a keyboard and a mouse, an external storage device 18a, an auxiliary storage device 18b, a client device 20,. .

  The CPU 11 controls the operation of each part of the circuit by using the RAM 14 as a working memory in accordance with a system program stored in the ROM 13 in advance and various application programs, and via a key input signal from the key input device 17 and a communication I / F 19. The various programs are activated and executed in response to a processing command signal corresponding to a user operation (input event) from the client device 20 received in this manner.

  In this server device 10, various data generated according to an application program that is activated and executed in response to an input event signal from the client device 20 is stored in the external storage device 18a in association with the user ID, for example. The drawing data for display is generated using the terminal frame buffer 14a in the RAM 14, and after being compressed, is transferred from the communication I / F 19 to the client device 20 and displayed.

  Note that drawing data to be displayed on the display device 16 of the server device 10 itself is generated on the frame buffer RAM 15.

  FIG. 3 is a block diagram showing a circuit configuration of the client device 20 in the SBC system.

  The client device 20 includes a CPU 21 as a computer, and a ROM 23, a RAM 24, and a frame buffer RAM 25 are connected to the CPU 21 via a bus 22. The drawing data written in the frame buffer RAM 25 is output to the display device 26 and displayed.

  The CPU 21 also has a key input device 27 such as a keyboard, mouse, microphone, and optical sensor via the bus 22, an external storage device 28 a, an auxiliary storage device 28 b, and a communication I / F (interface) 29 with the server device 10. Is connected.

  The CPU 21 uses the RAM 24 as a working memory in accordance with a system program stored in advance in the ROM 23 to control the operation of each part of the circuit. The CPU 21 receives a key input signal from the key input device 27 and a communication I / F 29. The system program is activated and executed in accordance with an application response signal, transfer drawing data, etc. from the apparatus 10.

  In the client device 20, various data generated by executing the application program in the server device 10 is appropriately read and stored in the external storage device 28a, and the display drawing data generated and transferred is The compressed data is decompressed, written to the frame buffer RAM 25, and displayed on the display device 26.

  FIG. 4 is a diagram showing a configuration of one-screen drawing data generated by the server device 10 and transferred to the client device 20 and displayed.

  Here, an outline of the transfer drawing data generation function in the server device 10 will be described.

  When generating drawing data for transfer that becomes a window screen G4 as shown in FIG. 4D, for example, in accordance with an application program activated in response to an event input from the client device 20, first, FIG. As shown in the figure, the lowest (first) window screen G1 made up of the rectangular frame widget Wg1 constituting the outermost part of the window is drawn in the terminal frame buffer 14a.

  Next, as shown in FIG. 4B, the bar-shaped widget Wg2 constituting the title at the top of the window is overwritten on the lowest window screen G1 and merged to generate a second window screen G2. The

  Subsequently, as shown in FIG. 4C, a rectangular frame-like widget Wg3 that forms an information display range at the center of the window is overwritten on the second window screen G2 and merged to form a third window screen G3. Generated.

  Then, as shown in FIG. 4D, the small rectangular frame-shaped widget Wg4 constituting the information display range further divided in the rectangular frame-shaped widget Wg3 in the third window screen G3 is overwritten. The uppermost (fourth) window screen G4 is generated by merging.

  In the server apparatus 10 according to the SBC system of the first embodiment, for example, in order to draw and generate the top-level window screen G4 and transmit and transfer it to the client apparatus 20, the top-level window screen G4 is displayed stepwise. Each of the constituting widgets Wg1 to Wg4 is not transmitted and displayed every time it is drawn, but is displayed with respect to time characteristics (see FIG. 6) required for the screen drawing process of the application program to be executed and the communication speed with the client device 20. At the timing set according to (bandwidth) (see FIG. 7), the drawing data overwritten and merged (combined) in each timing period is transmitted and transferred. As a result, when the time characteristics required for the screen drawing process and the communication speed with the client device 20 tend to be low, the timing for transmitting and transferring drawing data is reduced, and the display response time in the client device 20 is further delayed. The top-level window screen G4 is completed and displayed at once, and when the time characteristics required for the screen drawing process and the communication speed with the client device 20 tend to be high, the drawing data is transmitted and transferred. The drawing data of each of the widgets Wg1 to Wg4 constituting the uppermost window screen G4 is displayed at a high speed and stepwise so as to be completed.

  FIG. 5 is a block diagram showing a configuration of a program function for generating screen drawing data by the server device 10 and transmitting and transferring it.

  When the screen drawing data is generated according to the application program P1 activated in response to the event input from the client device 20, the window system program P2 detects a drawing process corresponding to the lowest window screen G1. Thereafter, the drawing data generated according to the activated application program P1 is written into the terminal frame buffer 14a by the virtual display driver program P3, merged (synthesized) by the drawing merge control unit P31, and then the data. The data is compressed by the conversion unit P32 and the screen information transmission unit P33, converted into drawing data for transfer, and transmitted and transferred to the client device 20.

  At this time, in the drawing merge control unit P31, as described above, the time characteristics required for the screen drawing process of the application program P1 to be executed (see FIG. 6) and the communication speed (bandwidth) with the client device 20 (see FIG. 7). ), The drawing data that has been merged (synthesized) and updated within each timing period is sent to the data conversion unit P32 and the screen information sending unit P33, and is transmitted and transferred to the client device 20. .

  FIG. 6 is a diagram showing an example of the drawing time table 14b stored in the RAM 14 of the server device 10.

  In this drawing time table 14b, an average drawing time (T) (drawing characteristic information) required for generating screen drawing data by various application programs provided in the server device 10 is defined and stored. For example, the time T required for drawing and generating the Web browsing screen by the Web browser is 1000 ms, and the time required for drawing and generating the text editing screen by the text editor is 100 ms.

  FIG. 7 is a diagram showing an example of the bandwidth table 14 c stored in the RAM 14 of the server device 10.

  This bandwidth table 14c includes three levels of bandwidth (less than 128 kbit / s / 128 kbit) for determining whether the communication speed between the server device 10 and the client device 20 corresponds to low speed / medium speed / high speed. / s to 1Mbit / s / 1Mbit / s) and the number M of drawing updates in application processing in each band (communication speed) are defined and stored in association with each other, for example, being accessed When the communication speed with the client device 20 is included in a low speed, the drawing data generated by the execution application at that time is collectively converted into a single transfer drawing data for transfer when the application ends. When it is transmitted to the apparatus 20 and included in the medium speed, it is divided and transmitted by the conversion processing to the drawing data for transfer five times before the application is finished.

  Next, the drawing data output function of the server apparatus 10 in the SBC system having the above-described configuration will be described.

  FIG. 8 is a flowchart showing the drawing data merge output process of the first embodiment by the server device 10.

  FIG. 9 is a flowchart showing a merge timer setting process accompanying the drawing data merge output process of the server device 10 according to the first embodiment.

  In the server device 10, when the application program P1 corresponding to the input event received from the client device 20 is started, the merge timer that counts and counts the reference clock of the CPU 11 is reset (step S1).

  When the window system program P2 detects and starts the drawing process according to the application program P1 (step S2 (Yes)), the drawing data generated according to the application program P1 is drawn in the terminal frame buffer 14a. In step S3, the process proceeds to the merge timer setting process in FIG. 9, and the timing for transmitting and transferring the drawing data merged and drawn in the terminal frame buffer 14a to the client device 20 is set (step SA).

  When the merge timer setting process is activated, the drawing characteristic information (drawing time (T)) corresponding to the currently executing application program P1 is acquired from the drawing time table 14b (see FIG. 6) stored in the RAM 14. (Step A1) The actual transmission / reception speed with the currently accessed client device 20 is detected, and the bandwidth corresponding to the communication processing is acquired (Step A2), and stored in the RAM 14 based on the actual bandwidth. The communication speed (high speed / medium speed / low speed) is determined from the current bandwidth table 14c (see FIG. 7) (step A3).

  If it is determined that the bandwidth corresponding to the actual transmission / reception speed with the client device 20 is low, for example, less than 128 (kbit / s) (step A4 (Yes)), Based on the drawing characteristic information (T) by the currently executing application program P1 acquired in step A1, the timing (T / M) for performing the drawing data output processing once (M) per drawing processing time T is shown. The merge timer is set (step A5).

  When the bandwidth corresponding to the actual transmission / reception speed with the client device 20 is, for example, 128 (kbit / s) to 1 (Mbit / s), it is determined that the medium speed is set (step A4). (No) → A6 (Yes)), the drawing data of 5 times (M) per drawing processing time T based on the drawing characteristic information (T) by the currently executing application program P1 acquired in step A1. Timing (T / M) for performing output processing is set in the merge timer (step A7).

  Furthermore, when it is determined that the bandwidth corresponding to the actual transmission / reception speed with the client device 20 exceeds 1 (Mbit / s), for example (step A6 (No)), the step A1 Based on the drawing characteristic information (T) obtained by the currently executing application program P1 obtained at step (T / M), the timing (T / M) for performing the drawing data output processing 50 times (T / M) per drawing processing time T is the merge timer. (Step A8).

  In a state where it is determined that the timing (T / M) set in step SA has not elapsed (T4 (No)), the time measured by the merge timer started in accordance with the start of the application program P1. Each time there is a next drawing process of the screen drawing data according to the application (step S5 (Yes)), the screen drawing data drawn in the terminal frame buffer 14a is overwritten with the current drawing data and merged ( (Step S6).

  Thereafter, when it is determined that the time measured by the merge timer started in accordance with the start of the application program P1 has passed the timing (T / M) set in step SA (step S4 (Yes)). The screen drawing data drawn in the terminal frame buffer 14a is read out and transmitted to the client device 20 via the communication I / F 19 (step S7).

  That is, when the bandwidth corresponding to the actual transmission / reception speed with the client device 20 is, for example, low speed (less than 128 kbit / s), the application program P1 started this time is a Web browser program (drawing time T = 1000 ms). The screen drawing data in the terminal frame buffer 14a is not transmitted and transferred until the drawing time T = 1000 ms elapses, and the original drawing data (for example, in widget units) is updated every time during that time. The merge process is repeatedly performed on the screen drawing data. Then, when the drawing time T (= 1000 ms) of the current Web browser program elapses, the screen drawing data that has been merged in the terminal frame buffer 14a is transmitted to the client device 20 and displayed.

  FIG. 10 is a timing chart showing the output timing of drawing data when the communication speed with the client device 20 is low in the drawing data merge output processing of the server device 10.

  As described above, when the communication speed with the client device 20 is low, for example, the drawing data updated in units of widgets is not transmitted and transferred each time, and the final screen according to the application program being executed is displayed. Since only the drawing data is transmitted and transferred for display, the uppermost window screen G4 can be completed and displayed all at once while preventing the display response time in the client device 20 from becoming slower.

  Conversely, the application program P1 started this time is a Web browser program (drawing time T = 1000 ms) in a state where the bandwidth corresponding to the actual transmission / reception speed with the client device 20 is, for example, high speed (exceeding 1 Mbit / s). In some cases, drawing data subjected to update merge processing in the terminal frame buffer 14a is read 50 times before the drawing time T = 1000 ms elapses, and is transmitted, transferred, and displayed to the client device 20.

  As described above, when the communication speed with the client device 20 is high, the drawing data subjected to the update merge processing in the terminal frame buffer 14a is transmitted 50 times, so that the top-level window screen G4 is configured. The drawing data of the widgets Wg1 to Wg4 can be displayed at high speed and stepwise to complete the uppermost window screen G4.

  In step S7, after the screen drawing data drawn in the terminal frame buffer 14a is read out and transmitted to the client device 20, the drawing processing of the screen drawing data according to the same application program is performed. When continuing, the same timing (T / M) set in the previous merge timer setting process (step SA: see FIG. 9) is set in the merge timer (steps S1, S2 (No) → S8), The same drawing data merge output process is repeated (steps S4 to S7).

  Therefore, according to the drawing data output function of the first embodiment of the server device 10 in the SBC system configured as described above, the drawing time T of the screen drawing data by the application program activated in response to the event input from the client device 20 is When the communication speed with the client device 20 is low (less than 128 kbit / s), once when the medium speed (128 kbit / s to 1 Mbit / s), and when high (higher than 1 Mbit / s) Divides by the number M of renderings defined as 50, sets the rendering timing, and transmits the drawing data updated on the screen rendering data to the client device 20 in accordance with the set rendering timing. Since the display speed is displayed, when the communication speed with the client device 20 is slow, the display response time in the client device 20 is prevented from becoming slower. When the communication speed with the client device 20 is high, the drawing data of the widgets Wg1 to Wg4 constituting the highest window screen G4 can be displayed at high speed. The uppermost window screen G4 can be completed in a stepwise manner.

  In the first embodiment, the application is started at a timing obtained by dividing the screen drawing time T by the application program started by the server device 10 by the number of drawing times M defined according to the communication speed with the client device 20. The drawing data generated and updated in accordance with the program is transmitted and transferred to the client device 20, but the drawing data is related to the number of drawing times M defined according to the screen drawing time T by the application program and the communication speed with the client device 20. Instead, as will be described in the second embodiment, each time the top-level widget (Wg4) is drawn by the executed application program and the window screen (G4) is completed, the completed screen drawing data is displayed. It is good also as a structure which transmits and forwards.

(Second Embodiment)
FIG. 11 is a flowchart showing the drawing data merge output process of the second embodiment by the server device 10.

  In the server apparatus 10 that executes the drawing data merge output process of the second embodiment, the drawing time table 14b (FIG. 6) provided in the RAM 14 in the server apparatus 10 that has executed the drawing data merge output process of the first embodiment. And the bandwidth table 14c (see FIG. 7) can be omitted.

  In the server device 10, when the application program P1 corresponding to the input event received from the client device 20 is activated and the start of the drawing process according to the application program P1 is detected and determined by the window system program P2 (step Q1 ( Yes)) First, a lowermost window screen G1 (see FIG. 4A) composed of a rectangular frame widget Wg1 constituting the outermost side of the window is drawn in the terminal frame buffer 14a and transmitted to the client apparatus 20. It is transferred and displayed (step Q2).

  Then, the drawing data generated and updated in units of widgets, for example, in accordance with the application program P1 is merged (synthesized) by overwriting each time the terminal frame buffer 14a in which the lowest window screen G1 is drawn is updated. (Step Q3).

  Then, it is determined whether or not the widget that has been updated this time is the uppermost widget (Wg4) for completing the uppermost window (G4) (step Q4).

  Here, if it is determined that the widget that has been rendered and updated in the terminal frame buffer 14a is not the highest-level widget (No in step Q4), the widget is generated according to the application program P1 that is being executed. The rendered data is merged (synthesized) by overwriting in the terminal frame buffer 14a and updated and rendered (step Q3).

  Thereafter, when it is determined in step Q4 that the widget that has been drawn and updated this time with respect to the terminal frame buffer 14a is the highest-level widget (step Q4 (Yes)), the terminal frame buffer In 14a, the drawing data updated and merged (synthesized) up to the current top widget is read out and transmitted to the client device 20 via the communication I / F 19 (step Q5).

  Therefore, according to the drawing data output function of the second embodiment of the server device 10 in the SBC system having the above-described configuration, the terminal frame buffer 14a is applied to the terminal frame buffer 14a according to the application program executed in response to the event input from the client device 20. The drawing data that is merged (synthesized) and updated by overwriting in units of widgets is read from the terminal frame buffer 14a when the top-level widget is drawn and drawing data for one screen is completed. Thus, the drawing time table 14b and the bandwidth table 14c required in the server device 10 of the first embodiment can be omitted. In addition, even when the communication speed with the client device 20 is low, the top-level window screen is completed at once without the widgets that make up the window screen being transmitted and transferred each time and being displayed with poor responsiveness. Can be displayed.

  It should be noted that the processing method by the server device 10 of the SBC system described in the above embodiments, that is, the drawing data merge output processing of the first embodiment of the server device 10 shown in the flowchart of FIG. Each method such as the merge timer setting process associated with the drawing data merge output process of the first embodiment shown in FIG. 11 and the drawing data merge output process of the server apparatus 10 according to the second embodiment shown in the flowchart of FIG. Programs that can be stored in an external recording medium 18a such as a memory card (ROM card, RAM card, etc.), magnetic disk (floppy disk, hard disk, etc.), optical disk (CD-ROM, DVD, etc.), semiconductor memory, etc. can do. Then, the computer (CPU 11) of the server device 10 reads the program stored in the external recording medium 18a into the storage device (flash ROM 13 or RAM 14), and the operation is controlled by the read program, so that each of the above-described embodiments is performed. The drawing data merge output function described in the embodiment can be realized, and the same processing as described above can be executed.

  Further, program data for realizing each of the above methods can be transmitted on the communication network (N) in the form of a program code, and from a computer device (program server) connected to the communication network (N). The program data can be fetched and stored in a storage device (flash ROM 13 or RAM 14) to realize the above-described drawing data merge output function.

  In each of the above embodiments, the drawing data merge output function by the server device 10 of the SBC system has been described. However, drawing data for the client device is generated by the server device of the normal server / client system, and transmitted. The same drawing data merge output function as described above can be applied even when the image is displayed.

  Note that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention at the stage of implementation. Further, each of the embodiments includes inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent elements are deleted from all the constituent elements shown in each embodiment or some constituent elements are combined in different forms, the problems described in the column of the problem to be solved by the invention If the effects described in the column “Effects of the Invention” can be obtained, a configuration in which these constituent requirements are deleted or combined can be extracted as an invention.

The block diagram which shows the structure of the SBC (Server Based Computing) system which concerns on embodiment of the server apparatus of this invention. The block diagram which shows the circuit structure of the server apparatus 10 in the said SBC system. The block diagram which shows the circuit structure of the client apparatus 20 in the said SBC system. The figure which shows the structure of the 1 screen drawing data produced | generated by the said server apparatus 10, transferred to the client apparatus 20, and displayed. FIG. 3 is a block diagram showing a configuration of a program function for generating screen drawing data by the server device 10 and transmitting and transferring it. The figure which shows an example of the drawing time table 14b memorize | stored in RAM14 of the said server apparatus 10. FIG. The figure which shows an example of the bandwidth table 14c memorize | stored in RAM14 of the said server apparatus 10. FIG. 6 is a flowchart showing drawing data merge output processing of the first embodiment by the server device 10; 6 is a flowchart showing a merge timer setting process associated with the drawing data merge output process of the first embodiment of the server device 10; 6 is a timing chart showing the output timing of drawing data when the communication speed with the client device 20 is low in the drawing data merge output processing of the server device 10; 9 is a flowchart showing drawing data merge output processing of the second embodiment by the server device 10;

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Server apparatus 20 ... Terminal apparatus 11, 21 ... CPU
12, 22 ... Bus 13, 23 ... ROM
14, 24 ... RAM
14a ... Frame buffer for terminal 14b ... Drawing time table 14c ... Bandwidth table 15, 25 ... Frame buffer RAM
16, 26 ... Display device 17, 27 ... Key input device 18a, 28a ... External storage device 18b, 28b ... Auxiliary storage device 19, 29 ... Communication I / F
N ... Communication network Wg1 ... Lowest widget (component element)
G1 ... lowest window screen Wg4 ... highest widget (component element)
G4 ... top-level window screen

Claims (7)

A server device that generates drawing data according to a built-in application program, transmits the data to a client device, and displays the data.
Drawing data storage means for drawing and storing drawing data generated according to the application program by overwriting;
A communication speed acquisition means for acquiring a communication speed with the client device;
A drawing number defining means for defining the number of drawing times according to the communication speed with the client device acquired by the communication speed acquiring means;
Data transmitting means for reading the drawing data stored by the drawing data storage means according to the number of drawing times defined by the drawing number defining means, and transmitting and transferring the drawing data to the client device;
A server device comprising: A drawing time defining means for defining a drawing time from the start time of the drawing data corresponding to each of a plurality of built-in application programs;
The data transmission means reads the drawing data stored in the drawing data storage means at a timing set based on the drawing time defined by the drawing time defining means and the number of drawing times defined by the drawing number defining means. Transmit and forward to the client device;
The server apparatus according to claim 1. The data transmission means divides the drawing data stored in the drawing data storage means at a timing set by dividing the drawing time defined by the drawing time defining means by the number of drawing times defined by the drawing number defining means. Read and transfer to client device,
The server device according to claim 2.   4. The drawing number defining means defines a smaller number of drawing times when the communication speed with the client device acquired by the communication speed acquiring means is slower than when the communication speed is high. The server device according to claim 1. A server device that generates drawing data according to a built-in application program, transmits the data to a client device, and displays the data.
Drawing data storage means for drawing and storing drawing data generated according to the application program by overwriting;
A drawing completion judging means for judging the completion of the drawing data stored in the drawing data storing means;
A data transmission unit that reads out the drawing data stored in the drawing data storage unit and transmits the data to the client device when the drawing completion determination unit determines completion of the drawing data generated according to the application program;
A server device comprising: A server processing program for controlling a computer of a server device that generates drawing data according to a built-in application program, transmits the data to a client device, and displays the data.
The computer,
Drawing data storage means for drawing the drawing data generated according to the application program by overwriting and storing it in a memory;
A communication speed acquisition means for acquiring a communication speed with the client device;
A drawing number defining means for defining the number of times of drawing according to the communication speed with the client device acquired by the communication speed acquiring means;
Data transmitting means for reading out the drawing data stored in the drawing data storage means according to the number of drawing times defined by the drawing number defining means and transmitting and transferring it to the client device;
A computer-readable server processing program designed to function as a computer. A server processing program for controlling a computer of a server device that generates drawing data according to a built-in application program, transmits the data to a client device, and displays the data.
The computer,
Drawing data storage means for drawing the drawing data generated according to the application program by overwriting and storing it in a memory;
Drawing completion judging means for judging completion of drawing data stored by the drawing data storage means;
A data transmission unit that reads out the drawing data stored in the drawing data storage unit and transmits the data to the client device when the drawing completion determination unit determines completion of the drawing data generated according to the application program;
A computer-readable server processing program designed to function as a computer.

Images