JP2008145985A - Three-dimensional map distribution system and server device - Google Patents

Three-dimensional map distribution system and server device Download PDF

Info

Publication number
JP2008145985A
JP2008145985A JP2006336315A JP2006336315A JP2008145985A JP 2008145985 A JP2008145985 A JP 2008145985A JP 2006336315 A JP2006336315 A JP 2006336315A JP 2006336315 A JP2006336315 A JP 2006336315A JP 2008145985 A JP2008145985 A JP 2008145985A
Authority
JP
Japan
Prior art keywords
server
map image
dimensional map
client device
cache
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2006336315A
Other languages
Japanese (ja)
Inventor
Tetsushi Kaneko
Mamoru Shiroki
Atsushi Sone
敦 曽根
哲士 金子
護 銀木
Original Assignee
Cad Center:Kk
Cyber Map Japan:Kk
株式会社キャドセンター
株式会社サイバーマップ・ジャパン
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cad Center:Kk, Cyber Map Japan:Kk, 株式会社キャドセンター, 株式会社サイバーマップ・ジャパン filed Critical Cad Center:Kk
Priority to JP2006336315A priority Critical patent/JP2008145985A/en
Publication of JP2008145985A publication Critical patent/JP2008145985A/en
Application status is Pending legal-status Critical

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide a three-dimensional map distribution system by server-side rendering including a server device capable of high-speed distribution of three-dimensional images. <P>SOLUTION: The server device 12 comprises a rendering server 126 and a cache server 123. The rendering server 126 creates a three-dimensional map image by using three dimensional map data stored in a three-dimensional map data storage section 127. The cache server 123 transmits the three-dimensional map image read out of a cache storage 124 to a client device 10 when the three-dimensional map image corresponding to request for transmission transmitted by the client device 10 exists in the cache storage 124, and transmits the three-dimensional map image created by the rendering server 126 to the client device 10 by requesting the rendering server 126 for creation of the three-dimensional map image corresponding to the request for transmission when the three-dimensional map image corresponding the request for transmission does not exist in the cache storage 124. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention provides a three-dimensional map image in which a landscape is three-dimensionally displayed on a client device connected to a server device via a communication network based on the three-dimensional map data held on the server device side. The present invention relates to a client / server type 3D map distribution system to be displayed.

  The client-server type 3D map distribution system includes a rendering method (hereinafter referred to as client-side rendering) that performs rendering on the client device side such as a personal computer (PC) or a portable information terminal, depending on the location of the rendering engine, and a server Roughly divided into two methods of rendering on the device side (hereinafter referred to as server-side rendering). Note that rendering in this specification means arithmetic processing for generating a three-dimensional map image based on three-dimensional map data including numerical data related to position information, shape information, and texture information of a building or the like. The rendering engine is a processing unit that executes rendering, and is generally configured by a hardware group such as a graphic chip and a software group such as a drawing application program conforming to a programming interface such as OpenGL (registered trademark).

  In a 3D map distribution system that performs client-side rendering, a client device requests the server device to transmit 3D map data, and receives the 3D map data transmitted from the server device in response to the request. Further, the client device executes rendering to generate a 3D map image, and outputs the generated 3D map image to a display device or the like included in the client device. Such a 3D map distribution system using client-side rendering is disclosed in, for example, Patent Document 1 (see paragraphs 76 to 83 of Patent Document 1).

On the other hand, in a 3D map distribution system that performs server-side rendering, the client device requests the server device to transmit a 3D map image, and the server device executes rendering in response to the request received from the client device. As a result, a three-dimensional map image is generated, and the generated three-dimensional map image is transmitted to the client device. The client device outputs the three-dimensional image received from the server device to a display device or the like.
JP 2006-208756 A

  Of the two methods described above, server-side rendering does not require a rendering engine to be executed in the client device, and therefore has the advantage of less restrictions on the processing capacity and memory capacity of a CPU (Central Processing Unit) installed in the client device. On the other hand, the processing load on the server device increases. In particular, in order to realize a so-called walk-through application that obtains a display effect as if walking in the 3D map by continuously updating the image following the movement of the viewpoint, the 3D map image Since high-speed distribution is required, the processing load on the server is further increased.

  Therefore, until now, it has been difficult to realize a robust server device that can withstand access from a large number of client devices in a 3D map distribution system using server-side rendering. It has been considered unsuitable for large-scale map distribution systems.

  The present invention has been made in consideration of the above-described circumstances, and includes a server side including a server device that can efficiently process access from a large number of client devices and perform high-speed distribution of three-dimensional images. An object is to provide a 3D map distribution system by rendering.

  The 3D map distribution system according to the present invention includes a client device and a server device capable of transmitting and receiving data to and from the client device via a communication network. Further, the client device sends a request for transmitting a three-dimensional map image to the server device based on an input device, a display device, a communication interface connected to the communication network, and an input operation on the input device. Screen data for outputting to the interface and receiving the 3D map image transmitted from the server device in response to the transmission request via the communication interface, and displaying the 3D map image on the display device; A map image display processing unit to be generated. The server device can store a 3D map data storage unit that stores 3D map data, a rendering server that generates a 3D map image using the 3D map data, and a plurality of 3D map images. A 3D map image corresponding to the transmission request is present in the cache storage, the 3D map image read from the cache storage is transmitted to the client device, When a 3D map image corresponding to the transmission request does not exist in the cache storage, a request to generate a 3D map image corresponding to the transmission request is transmitted to the rendering server, and in response to the generation request A 3D map image generated by the rendering server is transmitted to the client device. And a Yasshusaba.

  With such a configuration, when the cache server can respond to the request of the client device with the cached 3D map image, the rendering server does not need to perform rendering. Therefore, it is possible to reduce the processing load of the rendering server and suppress the delivery delay of the three-dimensional image due to the processing delay of the rendering server. As a result, the above-described 3D map distribution system according to the present invention can efficiently process accesses from a large number of client devices and perform high-speed distribution of 3D images.

  In the 3D map distribution system according to the present invention described above, the cache server may store the 3D map image generated by the rendering server in response to the generation request in the cache storage.

  In the 3D map distribution system according to the present invention described above, the client device further includes a storage unit capable of storing a plurality of 3D map images received from the server device, and the server device includes: The transmission data including the three-dimensional map image transmitted in response to the transmission request may be configured to add effective period information indicating an effective period when the three-dimensional map image is held in the storage unit. Good. Accordingly, the server device can instruct the client device to cache the 3D map image, and the client device can efficiently display the 3D map image acquired in the past, and the processing load of the server device can be reduced. Can be reduced.

  In the 3D map distribution system according to the present invention described above, the client device includes a CPU and a Web browser program having a scripting engine, and the CPU performs processing by the map image display processing unit. You may perform by executing the script transferred from the said web browser program and the said server apparatus. In such a configuration, in order to realize a process of updating a three-dimensional map displayed on the client device based on a user input, the client device may be a general-purpose device such as Internet Explorer (registered trademark) or Firefox (registered trademark). It is sufficient that a simple web browser program is installed, and there is an advantage that no other dedicated software or plug-in software linked with the web browser program is required.

  According to the present invention, it is possible to provide a 3D map distribution system by server-side rendering including a server apparatus capable of efficiently processing accesses from a large number of client devices and performing high-speed distribution of 3D images.

  Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings. In the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted as necessary for the sake of clarity.

  The structure of the three-dimensional map delivery system 1 concerning this Embodiment is shown in FIG. The three-dimensional map distribution system 1 has a configuration in which a plurality of client devices 10 and a server device 12 are connected via a communication network 11. In the 3D map distribution system 1, a 3D map image generated by rendering by the server device 12 is transmitted from the server device 12 to the client device 10, and the 3D map image is displayed by the client device 10. Hereinafter, each component which the three-dimensional map delivery system 1 has is demonstrated.

  The client device 10 displays a 3D map image to the user and requests the server device 12 connected via the communication network 11 to transmit a new 3D map image based on an input operation by the user. The display content is updated using the three-dimensional map image transmitted from the server device 12.

  FIG. 2 is a block diagram illustrating the configuration of the client device 10. In FIG. 2, the input device 101 receives input from the user and transfers input information from the user to the map image display processing unit 102. As the input device 101, for example, a mouse, a keyboard, a pen tablet, or the like can be used.

  The map image display processing unit 102 executes a process of updating the three-dimensional map image displayed on the display device 104 in accordance with user input information input from the input device 101. Specifically, the map image display processing unit 102 outputs a transmission request for a 3D map image to the server device 12 to the communication interface 103 in response to an input operation on the input device 101. Further, the map image display processing unit 102 receives the 3D map image transmitted from the server device 12 in response to the transmission request via the communication interface 103 and displays the received 3D map image on the display device 104. Generate screen data for

  The communication interface 103 is an interface for connecting the client device 10 to the communication network 11 and performing data transmission / reception with the server device 12.

  The display device 104 is a device that displays a 3D map image and a screen that prompts the user to input. As the display device 104, for example, a CRT display, a liquid crystal display, or the like can be used.

  The cache data storage unit 105 is a storage device that stores a three-dimensional map image acquired from the server device 12.

  The client device 10 illustrated in FIG. 2 can be realized by a general-purpose information processing device having a communication function such as a PC, a mobile phone terminal, and a portable information terminal. Further, the client device 10 may be configured as a dedicated terminal for browsing the map like a so-called kiosk terminal. As an example, FIG. 3 shows a configuration diagram when the client device 10 is realized by a typical computer system.

  In FIG. 3, a CPU (Central Processing Unit) 106 executes an operation system (OS) 1091 and a Web browser program 1092 stored in a ROM (Read Only Memory) 108 or a non-volatile storage device 109, whereby the map described above. Processing of the image display processing unit 102 is performed.

  The nonvolatile storage device 109 stores an OS 1091 and a Web browser program 1092. Further, the three-dimensional map image acquired from the server device 12 by the execution of the Web browser program 1092 is stored as cache data 1093 in the nonvolatile storage device 109. As the nonvolatile storage device 109, a hard disk drive, a magneto-optical disk drive, a flash memory, or the like can be used. The nonvolatile storage device 109 may be a storage device provided in a single computer together with other components, but may be configured as a physically separated network storage, for example, a plurality of hard disk devices Or a combination of flash memories.

  The Web browser program 1092 is an application program for displaying a Web page, is read out on a RAM (Random Access Memory) 107 or an internal memory (not shown) of the CPU 106, and is executed by the CPU 106. Note that a Web browser program including a JavaScript engine may be used in order to realize smooth update of a three-dimensional map image displayed without screen transition of the entire Web page displayed on the display device 104. As the Web browser program 1092, for example, Internet Explorer (registered trademark), Firefox (registered trademark), or the like can be used. The Web browser program 1092 is not necessarily stored in the nonvolatile storage device 109, and may be input from a storage device provided remotely via a communication network, for example.

  Subsequently, the procedure of the update process of the three-dimensional map image executed by the client device 10 shown in FIG. 3 will be described with reference to the flowchart of FIG. First, in step S101, an operation by the user is accepted by the input device 101. In step S102, a URL (Uniform Resource Locator) where a three-dimensional map image to be displayed exists in accordance with a user operation is generated.

  In step S103, the cache data 1093 is searched to confirm whether or not the 3D map image corresponding to the URL generated in step S102 has already been cached. If the three-dimensional map image corresponding to the URL generated in step S102 does not exist in the cache data 1093, or if a predetermined valid period has passed even though it exists, the HTTP request is sent to the server device 12. The URL is notified and transmission of a new three-dimensional map image is requested (steps S104 and S105). In step S106, the three-dimensional map image transmitted from the server device 12 in response to the HTTP request is received. In step S <b> 107, the map display portion of the Web page displayed on the display device 104 is updated with the 3D map image received from the server device 12.

  On the other hand, when a valid 3D map image corresponding to the URL generated in step S102 exists in the cache data 1093, the display of the display device 104 is updated with the 3D map image included in the cache data 1093. (Steps S104 and S107).

  It is also possible to update the 3D map image continuously as if walking in the 3D map by repeating the image update process shown in FIG. 4 according to the user's input.

  Next, the configuration on the server device 12 side will be described in detail with reference to FIG. 1 again. The load balancer 121 sends an access by the client device 10 connected so as to be able to transmit and receive data via the communication network 11, that is, a request for transmitting a three-dimensional map image from the client device 10 by HTTP Request to any of the cache servers 123. Sort to crab. The method of determining the access distribution destination by the client device 10 may be a round robin method in which the distribution destination is switched in order according to the access order, or the load is equalized according to the number of TCP connections held by each cache server 123. A method of determining the distribution destination may be used. Further, the present invention is not limited to this, and load distribution may be performed by other conventionally known methods. In FIG. 1, the number of cache servers 123 is two, but such a configuration is an example, and it is needless to say that three or more cache servers may be provided.

  The plurality of cache servers 123 are connected to the load balancer 121 via the communication network 122. Each cache server 123 has a cache storage 124 for storing a three-dimensional map image generated in the past by a rendering server 126 described later in an identifiable manner.

  An example of the operation of the cache server 123 will be described with reference to the flowchart of FIG. In step S <b> 201, the cache server 123 receives the three-dimensional map image transmission request from the client device 10 distributed by the load balancer 121. In step S202, it is searched whether or not the three-dimensional map image specified by the URL included in the transmission request received in step S201 is stored in the cache storage 124. If a valid 3D map image corresponding to the URL included in the transmission request from the client device 10 exists in the cache storage 124, the process proceeds to step S207.

  On the other hand, if the three-dimensional map image corresponding to the URL included in the transmission request from the client device 10 does not exist in the cache storage 124 or if it exists but the predetermined valid period has passed, the cache server 123 The rendering server 126 is requested to generate a new three-dimensional map image (steps S203 and S204). In step S205, the 3D map image generated by the rendering server 126 in response to the request transmitted in step S204 is received. In step S <b> 206, the 3D map image received from the rendering server 126 is stored in the cache storage 124.

  Finally, in step S207, the three-dimensional map image is transmitted to the client device 10 in response to the transmission request from the client device 10.

  Next, the rendering server 126 shown in FIG. 1 will be described. The rendering server 126 is connected to a plurality of cache servers 123 via a communication network 125. The rendering server 126 performs a drawing process based on the 3D map data stored in the 3D map data storage unit 127 to generate a 3D map image. Here, the 3D map data stored in the 3D map data storage unit 127 includes numerical data related to position information, shape information, and texture information of buildings and the like. The rendering method applied to the generation of the three-dimensional map image by the rendering server 126 may be arbitrarily selected from a plurality of conventionally known methods.

  An example of a procedure for generating a three-dimensional map image by the rendering server 126 will be described with reference to the flowchart shown in FIG. In step S301, a request for generating a three-dimensional map image is received from the cache server 123. In step S302, based on the URL included in the generation request received from the cache server 123, the spatial coordinates (x, y, z), the pitch angle, and the yaw angle of the viewpoint serving as a reference for the three-dimensional map image are calculated. . In step S303, the 3D map data stored in the 3D map data storage unit 127 is input, and a 3D map image corresponding to the calculated viewpoint is generated. Finally, in step S304, the generated three-dimensional map image is transmitted to the requesting cache server 123.

  7 and 8 show an overall processing sequence when a 3D map image is distributed to the client device 10 in the 3D map distribution system 1 configured as described above. That is, when the server apparatus 12 responds to the client apparatus 10 with the image data held in the cache storage 124 of the cache server 123, the rendering process of the rendering server 126 is performed as shown in steps S401 to S409 in FIG. Not done. On the other hand, as shown in steps S501 to S512 of FIG. 8, when a valid 3D map image requested by the client apparatus 10 does not exist in the cache storage 124, rendering processing by the rendering server 126 is performed (S508 to S508). 510).

  As described above, the 3D map distribution system 1 according to this embodiment includes the cache server 123 on the server side. Therefore, when the cache server 123 can respond to the request of the client device 10 with the cached data, the rendering server 126 does not need to execute the rendering process. Therefore, the processing load on the rendering server 126 can be reduced, and the delivery delay of the three-dimensional image due to the processing delay of the rendering server 126 can be suppressed. As a result, the 3D map distribution system 1 can efficiently process access from a large number of client devices and perform high-speed distribution of 3D images.

  Note that a sufficient expiration date may be set for a response when the server device 12 transmits the 3D map image so that the cache function of the 3D map image in the client device 10 operates effectively. Specifically, in the response from the server apparatus 12 to the client apparatus 10, a future date may be specified in the Expires field of the HTTP header. Also, a sufficiently large value may be set in the max-age indicator of the cash-control field. Accordingly, the server apparatus 12 can instruct the client apparatus 10 to cache the three-dimensional map image, and the client apparatus 10 can efficiently display images acquired in the past, and the processing load of the server apparatus 12 Can be reduced.

  Further, in order to reduce the processing load of the rendering server 126 and enable high-speed distribution of 3D map images to a large number of client devices 10, it is desirable to improve the cache hit rate in the cache server 123. For this purpose, the unit of viewpoint movement when the client apparatus 10 accepts the movement of the viewpoint of the 3D map image from the user is coarse enough not to impair the smoothness of the display update of the 3D map image in the client apparatus 10. It is good to set. Specifically, the minimum change amount of at least one of the viewpoint position coordinates, the pitch angle, and the yaw angle may be adjusted. As a result, the maximum number of three-dimensional map images that may be displayed on the client device 10 is reduced, so that the cache hit rate of the cache server 123 can be improved.

  As shown in FIGS. 7 and 8, the client device 10 uses a Web browser program having a JavaScript engine and executes a program described in JavaScript, thereby generating URL generation processing according to user input information, and the server device 12. Processing related to the map image display processing unit 102 such as acquisition processing of a three-dimensional map image from the image data may be performed. Note that the JavaScript for performing the processing related to the map image display processing unit 102 may be transferred from the server device 12 to the client device 10 prior to the transmission request of the three-dimensional map image by the client device 10, for example. In such a configuration, in order to implement the process of updating the three-dimensional map displayed on the client device 10 based on the user input, the client device 10 such as the Internet Explorer (registered trademark), Firefox (registered trademark), or the like. It is sufficient that a general-purpose Web browser program is installed, and there is an advantage that no other dedicated software or plug-in software linked with the Web browser program is required. The operation of the three-dimensional map may be realized by executing a script by another scripting engine included in the web browser program, not limited to the JavaScript engine.

  The number of cache servers 123, rendering servers 126, and 3D map data storage units 127 included in the server device 12 illustrated in FIG. 1 is an example. If the server apparatus 12 has one cache server 123, the load balancer 121 is not necessarily provided.

  The cache server 123 described above can be configured by a plurality of computer systems in addition to a single computer system. For example, the cache server 123 described above may be configured by a Web server that handles data transmission / reception with a client device in response to a request from the client device 10 and a cache management server that manages cache storage.

  Furthermore, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention described above.

It is a block diagram of the three-dimensional map delivery system concerning embodiment of this invention. It is a structural example of the client apparatus which the three-dimensional map delivery system concerning embodiment of this invention has. It is a structural example of the client apparatus which the three-dimensional map delivery system concerning embodiment of this invention has. It is a flowchart which shows the process of the client apparatus which the three-dimensional map delivery system concerning embodiment of this invention has. It is a flowchart which shows the process of the cache server which the three-dimensional map delivery system concerning embodiment of this invention has. It is a flowchart which shows the process of the rendering server which the three-dimensional map delivery system concerning embodiment of this invention has. It is a sequence diagram regarding the three-dimensional map delivery system concerning embodiment of this invention. It is a sequence diagram regarding the three-dimensional map delivery system concerning embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 3D map delivery system 10 Client apparatus 101 Input apparatus 102 Map image display process part 103 Communication interface 104 Display apparatus 105 Cache data storage part 11 Communication network 12 Server apparatus 121 Load balancer 123 Cache server 124 Cache storage 126 Rendering server 127 3D Map data storage unit 122, 125 Communication network

Claims (7)

  1. A client device, and a server device capable of transmitting and receiving data between the client device via a communication network,
    The client device is
    An input device;
    A display device;
    A communication interface connected to the communication network;
    Based on an input operation on the input device, a transmission request for a three-dimensional map image for the server device is output to the communication interface, and a three-dimensional map image transmitted from the server device in response to the transmission request is output to the communication interface. A map image display processing unit that generates screen data for displaying the three-dimensional map image on the display device, and
    With
    The server device
    A 3D map data storage unit for storing 3D map data;
    A rendering server that generates a three-dimensional map image using the three-dimensional map data;
    A cache storage capable of storing a plurality of three-dimensional map images, and when a three-dimensional map image corresponding to the transmission request exists in the cache storage, the three-dimensional map read from the cache storage; An image is transmitted to the client device, and when a 3D map image corresponding to the transmission request does not exist in the cache storage, a generation request for a 3D map image corresponding to the transmission request is transmitted to the rendering server. And a cache server that transmits a three-dimensional map image generated by the rendering server in response to the generation request to the client device;
    3D map distribution system.
  2.   The 3D map distribution system according to claim 1, wherein the cache server stores the 3D map image generated by the rendering server in response to the generation request in the cache storage.
  3. The client device further includes a storage unit capable of storing a plurality of three-dimensional map images received from the server device,
    The server device adds valid period information indicating a valid period when the three-dimensional map image is held in the storage unit to transmission data including the three-dimensional map image transmitted in response to the transmission request. The three-dimensional map distribution system according to claim 1.
  4. The client device includes a CPU and a Web browser program having a scripting engine,
    The three-dimensional map distribution system according to claim 1, wherein the processing by the map image display processing unit is performed by the CPU executing a script transferred from the Web browser program and the server device.
  5. A server device capable of transmitting / receiving data to / from a client device via a communication network,
    A 3D map data storage unit for storing 3D map data;
    A rendering server that generates a three-dimensional map image using the three-dimensional map data;
    A cache storage capable of storing a plurality of three-dimensional map images; when a three-dimensional map image corresponding to a transmission request transmitted by the client device exists in the cache storage, the cache storage reads The issued 3D map image is transmitted to the client device, and if a 3D map image corresponding to the transmission request does not exist in the cache storage, a request for generating a 3D map image corresponding to the transmission request is issued. A cache server that transmits to the rendering server and transmits a three-dimensional map image generated by the rendering server in response to the transmission request to the client device;
    A server device comprising:
  6.   The server apparatus according to claim 5, wherein the cache server stores a three-dimensional map image generated by the rendering server in response to the generation request in the cache storage.
  7.   The effective period information which shows the effective period when the said 3D map image is hold | maintained at the said client apparatus with respect to the transmission data containing the said 3D map image transmitted according to the said transmission request is provided. 5. The server device according to 5.
JP2006336315A 2006-12-13 2006-12-13 Three-dimensional map distribution system and server device Pending JP2008145985A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006336315A JP2008145985A (en) 2006-12-13 2006-12-13 Three-dimensional map distribution system and server device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006336315A JP2008145985A (en) 2006-12-13 2006-12-13 Three-dimensional map distribution system and server device

Publications (1)

Publication Number Publication Date
JP2008145985A true JP2008145985A (en) 2008-06-26

Family

ID=39606205

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006336315A Pending JP2008145985A (en) 2006-12-13 2006-12-13 Three-dimensional map distribution system and server device

Country Status (1)

Country Link
JP (1) JP2008145985A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5559445B1 (en) * 2013-12-26 2014-07-23 株式会社スクウェア・エニックス Drawing system, control method, program, and recording medium
US8892883B2 (en) 2011-05-02 2014-11-18 Crytek Ip Holding Llc Render service for remote access to applications
JP2014235607A (en) * 2013-06-03 2014-12-15 独立行政法人海洋研究開発機構 Server system and program
KR101481122B1 (en) 2012-11-30 2015-01-14 성균관대학교산학협력단 Method and system for managing dynamic cache for transcoding based on cloud computing

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001134776A (en) * 1999-08-25 2001-05-18 Alpine Electronics Inc Map data distributing method
JP2002049766A (en) * 2000-08-03 2002-02-15 Kddi Corp Contents-providing method
JP2003134545A (en) * 2001-10-22 2003-05-09 Communication Research Laboratory Contents distribution method to mobile terminal and its center system
JP2003208597A (en) * 2002-01-11 2003-07-25 Dream Technologies Kk Image converter and image conversion method
JP2006031087A (en) * 2004-07-12 2006-02-02 Nec Corp Real estate property guiding system, server and program

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001134776A (en) * 1999-08-25 2001-05-18 Alpine Electronics Inc Map data distributing method
JP2002049766A (en) * 2000-08-03 2002-02-15 Kddi Corp Contents-providing method
JP2003134545A (en) * 2001-10-22 2003-05-09 Communication Research Laboratory Contents distribution method to mobile terminal and its center system
JP2003208597A (en) * 2002-01-11 2003-07-25 Dream Technologies Kk Image converter and image conversion method
JP2006031087A (en) * 2004-07-12 2006-02-02 Nec Corp Real estate property guiding system, server and program

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8892883B2 (en) 2011-05-02 2014-11-18 Crytek Ip Holding Llc Render service for remote access to applications
KR101481122B1 (en) 2012-11-30 2015-01-14 성균관대학교산학협력단 Method and system for managing dynamic cache for transcoding based on cloud computing
JP2014235607A (en) * 2013-06-03 2014-12-15 独立行政法人海洋研究開発機構 Server system and program
JP5559445B1 (en) * 2013-12-26 2014-07-23 株式会社スクウェア・エニックス Drawing system, control method, program, and recording medium

Similar Documents

Publication Publication Date Title
US6313855B1 (en) System and method for web browsing
JP5536846B2 (en) Web page display method and system
KR101346301B1 (en) Automatic display of resized images
US8549531B2 (en) Optimizing resource configurations
EP1662405A1 (en) Method of displaying data on a client computer
JP5627771B2 (en) Assigning GPU resources to multiple clients
JP2012533102A (en) Selective distribution of changing image updates to client devices
US20120254727A1 (en) Methods and systems for generating and displaying a preview image of a content area
US7464381B1 (en) Content update proxy method
TWI543108B (en) Crowd-sourced video rendering system
CN103946836B (en) The method and apparatus for rendering map image using the modification of non-grating map datum
US20110169860A1 (en) Information Display Device
US20140108945A1 (en) Custom optimization of web pages
US10031891B2 (en) Delivery and display of page previews during page retrieval events
US10533871B2 (en) Rendering a map using style identifiers
US20130120368A1 (en) Browser-Based Collaborative Development of a 3D Model
CN105027121B (en) The five application page of the machine application is indexed
JPWO2006046286A1 (en) Data distribution system and method
JP2005535944A (en) Method and system for proactively and predictively caching pages to improve navigation within a site
US8903900B2 (en) Managing map elements using aggregate feature identifiers
CN102438045B (en) Method and system for pre-fetching web page, and method for accessing web page
US20120011194A1 (en) Systems and methods for networked, in-context, high resolution image viewing
WO2011153014A2 (en) Adjustable and progressive mobile device street view
US20060235941A1 (en) System and method for transferring web page data
US20100045662A1 (en) Method and system for delivering and interactively displaying three-dimensional graphics

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20091130

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20111013

A131 Notification of reasons for refusal

Effective date: 20111101

Free format text: JAPANESE INTERMEDIATE CODE: A131

A02 Decision of refusal

Effective date: 20120403

Free format text: JAPANESE INTERMEDIATE CODE: A02