US20050157218A1 - Projector selection system, projector selecting method, and program for implementing the system and method - Google Patents

Projector selection system, projector selecting method, and program for implementing the system and method Download PDF

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Publication number
US20050157218A1
US20050157218A1 US11/016,868 US1686804A US2005157218A1 US 20050157218 A1 US20050157218 A1 US 20050157218A1 US 1686804 A US1686804 A US 1686804A US 2005157218 A1 US2005157218 A1 US 2005157218A1
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United States
Prior art keywords
projector
search
preview image
display
image
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Abandoned
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US11/016,868
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English (en)
Inventor
Kazuya Honma
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Sharp NEC Display Solutions Ltd
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NEC Viewtechnology Ltd
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Publication date
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Assigned to NEC VIEWTECHNOLOGY, LTD. reassignment NEC VIEWTECHNOLOGY, LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HONMA, KAZUYA
Publication of US20050157218A1 publication Critical patent/US20050157218A1/en
Priority to US12/897,881 priority Critical patent/US8086704B2/en
Assigned to NEC DISPLAY SOLUTIONS, LTD. reassignment NEC DISPLAY SOLUTIONS, LTD. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: NEC VIEWTECHNOLOGY, LTD.
Abandoned legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/51—Discovery or management thereof, e.g. service location protocol [SLP] or web services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
    • H04L69/329—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the application layer [OSI layer 7]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/4104—Peripherals receiving signals from specially adapted client devices
    • H04N21/4112—Peripherals receiving signals from specially adapted client devices having fewer capabilities than the client, e.g. thin client having less processing power or no tuning capabilities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2803—Home automation networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/488—Data services, e.g. news ticker
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor

Definitions

  • the present invention relates to a projector selection system, a projector selecting method, and a program for implementing the system and method.
  • a search system For connecting a computer to an intended projector through a network, a search system is used for purposes of avoiding burdensome entry of the IP address and the like of the projector.
  • a communication controller for individually controlling a multi-projector to which a plurality of projectors are connected (see JP-08-172676-A).
  • the configuration of the search system comprises search client 12 having means 102 for searching for a projector; and search response server 22 having means 202 for responding to a search, as illustrated in FIG. 1 .
  • Information on a particular projector is acquired by the search system, and displayed on the screen of a computer in the form of projector list 152 , as illustrated in FIG. 2 .
  • the conventional search system fails to provide a high usability.
  • a projector selection system has one or more projectors and a computer interconnected through a network for selecting one of the projectors from the computer.
  • the computer comprises a search client and a dialog display, while the projector comprises a search response server and a projector information storage.
  • the search client includes projector search means for transmitting a search command for searching the projectors to the network, and acquiring projector information including a projector name, an IP address, and a status from the projector information storage as a response to the search command from the projector; identifier assigning means for generating a unique identifier for the projector which has responded, transmitting an identifier assignment for assigning the identifier to each of the projectors through the network, and omitting the transmission of the identifier assignment to the projector which has already displayed an image; and preview image requesting means for transmitting an image request command to the network for requesting a preview image which is a scale-down version of an image displayed by the projector on a screen, and acquiring the preview image as a response to the image request command from the projector.
  • the dialog display includes means for displaying the projector information and the preview image.
  • the projector information storage includes means for preserving the projector information.
  • the search response server includes search response means for receiving the search command from the network, and returning the projector information from the projector information storage; display presence/absence checking means for checking the status indicating whether or not the display has already displayed an image; identifier display means for displaying the identifier received from the network on a screen; preview image generating means for generating the preview image based on the displayed identifier or an existing display; and preview image transmitting means for receiving the image request command from the network, and returning the preview image generated by the preview image generating means.
  • Another projector selection system has one or more projectors and a computer interconnected through a network for selecting one of the projectors from the computer.
  • the computer comprises a search client and a dialog display, while the projector comprises a search response server and a projector information storage.
  • the search client includes projector search means for transmitting a search command for searching the projectors to the network, and acquiring projector information including a projector name, an IP address, and a status from the projector information storage as a response to the search command from the projector; and preview image requesting means for transmitting an image request command to the network for requesting a preview image which is a scale-down version of an image displayed by the projector on a screen, and acquiring the preview image as a response to the image request command from the projector.
  • the dialog display includes means for displaying the projector information and the preview image.
  • the projector information storage includes means for preserving the projector information.
  • the search response server includes search response means for receiving the search command from the network, and returning the projector information from the projector information storage; display presence/absence checking means for checking the status indicating whether or not the display has already displayed an image; IP address display means responsive to the search command received from the network for displaying the IP address set for the projector on a screen, and omitting the display of the IP address of the projector which has already displayed an image on the screen; preview image generating means for generating the preview image based on the displayed IP address or an existing display; and preview image transmitting means for receiving the image request command from the network, and returning the preview image generated by the preview image generating means.
  • a program according to the present invention causes the computer and the search response server of the projector to function as any of the projector selection systems described above.
  • a projector selecting method for selecting one of projectors from a computer, wherein the projectors and computer are interconnected through a network, the computer comprises a search client and a dialog display, and the projector comprises a search response server and a projector information storage.
  • the method comprises the steps of the search client transmitting a search command for searching the projectors to the network using projector search means, and waiting for a response to the search command; the search response server receiving the search command, reading a projector name and an IP address from the projector information storage, acquiring a status indicative of the presence or absence of a display from display presence/absence checking means, and returning projector information including the projector name, IP address and status, using search response means; the search client passing the received projector information to the dialog display for displaying the projector information on a screen; the search client generating a unique identifier for each of the projectors which have responded, transmitting an identifier assignment to each of the projectors for assigning the identifier, and omitting the transmission of the identifier to the projector which has already displayed an image; the search response server receiving the identifier assignment, displaying the identifier on a screen using identifier displaying means, and returning an assignment completion; the search response server generating a preview image which is a scale-
  • Another projector selecting method for selecting one of projectors from a computer, wherein the projectors and computer are interconnected through a network, the computer comprises a search client and a dialog display, and the projector comprises a search response server and a projector information storage.
  • the method comprising the steps of the search client transmitting a search command for searching the projectors to the network using projector search means, and waiting for a response to the search command; the search response server receiving the search command, reading a projector name and an IP address from the projector information storage, acquiring a status indicative of the presence or absence of a display from display presence/absence checking means, and returning projector information including the projector name, IP address and status, using search response means; the search client passing the received projector information to the dialog display for displaying the projector information on a screen; the search response server receiving the search command, displaying the IP address set for the projector on a screen using IP address display means, and omitting the display of the IP address for the projector which has already displayed an image on the screen; the search response server generating a preview image which is a scale-down version of an image displayed on the screen by the projector using preview image generating means based on the displayed IP address or an existing display; the search client, responding to a selection of a desired projector made
  • a program according to the present invention causes the computer and the search response server of the projector to execute any of the projector selecting methods described above.
  • the present invention provides various advantages, some of which are described below.
  • the present invention permits the user to readily select an appropriate projector because the user is provided with the preview images which associate items on a projector list displayed on the computer screen with actual projectors. Also, the present invention does not prevent other persons from using projectors since the identifiers or IP addresses are not displayed for those projectors which have already made a display. Additionally, the identifier assigning means can be omitted from the search client when using an IP address unique to each projector.
  • FIG. 1 is a block diagram illustrating the configuration of a conventional search system
  • FIG. 2 is a diagram illustrating a display on a conventional computer screen
  • FIG. 3 is a block diagram illustrating the configuration of a projector selection system according to a first embodiment of the present invention
  • FIG. 4 is a sequence chart for describing the operation according to the first embodiment of the present invention.
  • FIG. 5 is a diagram illustrating how identifiers are displayed on screens
  • FIG. 6 is a diagram showing a display layout on a screen of a dialog display
  • FIG. 7 is a block diagram illustrating the configuration of a projector selection system according to a second embodiment of the present invention.
  • FIG. 8 is a sequence chart for describing the operation according to the second embodiment of the present invention.
  • the first embodiment of the present invention comprises a projector selection system which has one or more projectors 2 and computer 1 that are interconnected through network 9 for selecting projector 2 from computer 1 .
  • Computer 1 comprises search client 10 having projector search means 101 , identifier assigning means 105 , and preview image requesting means 109 ; and dialog display 15 .
  • Projector 2 in turn comprises search response server 20 having search responding means 201 , display presence/absence checking means 203 , identifier display means 205 , preview image generating means 207 , and preview image transmitting means 209 ; and projector information storage 25 .
  • projector search means 101 transmits a search command to network 9 for searching projectors, and acquires projector information including a projector name, an IP address, status, and the like from projector information storage 25 as a response to a search command from each projector 2 .
  • Identifier assigning means 105 generates a unique identifier for each of projectors 2 which have responded, and transmits an identifier assignment for assigning the identifier to each of projectors 2 through network 9 .
  • Identifier assigning means 105 does not transmit the identifier assignment to projectors 2 which have already made a display.
  • Preview image requesting means 109 transmits an image request command to network 9 for requesting a preview image which is a scale-down version of an image displayed by projector 2 on the screen, and acquires the preview image as a response to the image request command from projector 2 .
  • Dialog display 15 visually provides the user with projector information and preview images which make up a user interface.
  • search response means 201 receives a search command from network 9 , and returns the projector information including the projector name, IP address, status, and the like.
  • Display presence/absence checking means checks the status indicating whether projector 2 has already made any display.
  • Identifier display means 205 displays an identifier received from network 9 on the screen.
  • Preview image generating means 207 generates a preview image, based on the displayed identifier or an existing display, which is a scaled-down version of an image displayed on the screen by projector 2 .
  • Preview image transmitting means 209 receives an image request command from network 1 , and returns the preview image generated by preview image generating means 207 .
  • Projector information storage 25 preserves the projector information including the projector name, IP address, status, and the like in a storage device or a memory.
  • a program for implementing the projector selection system according to the first embodiment of the present invention can cause the computer and the search response server of the projector to function as the projector selection system.
  • search client 10 transmits search command T- 1 for searching for projectors 2 to network 9 using projector search means 101 , and waits for a response to search command T- 1 .
  • Search response server 20 upon receipt of search command T- 1 , reads the projector name, IP address, and the like from projector information storage 25 , while acquiring the status indicating whether or not projector 2 is making a display on the screen from display presence/absence checking means 203 , and returns projector information R- 1 including the project name, IP address and status, using search response means 201 .
  • Search client 10 passes the received projector information to dialog display 15 for displaying the projector information on the screen (see projector list 151 in FIG. 6 for a specific example).
  • Search client 10 next generates a unique identifier (a character string comprised of alphanumeric symbols) for each of projectors 2 which have responded, and transmits identifier assignment T- 2 for assigning the identifier to each projector 2 .
  • identification assignment T- 2 is not transmitted to projector 2 which has already made a display.
  • Search response server 20 upon receipt of identifier assignment T- 2 , displays the identifier on the screen (see screens 3 a , 3 b in FIG. 5 for specific examples) using identifier display means 203 , and returns assignment completion R- 2 .
  • Search response server 20 further generates a preview image which is a scale-down version of the image displayed on the screen by projector 2 based on the displayed identifier or an existing display using preview image generating means 109 .
  • search client 10 transmits image request command T- 3 for requesting a preview image using preview image requesting means 109 .
  • Search response server 20 upon receiving image request command T- 3 , returns the generated preview image as image data R- 3 using preview image transmitting means 209 .
  • Search client 10 passes the received image data to dialog display 15 for displaying the preview image on the screen (see preview image 153 in FIG. 6 for a specific example).
  • a program for implementing the projector selecting method according to the first embodiment of present invention can permit the computer and the search response server of the projector to execute the projector selecting method.
  • the second embodiment of the present invention comprises a projector selection system which has one or more projectors 2 and computer 1 that are interconnected through network 9 for selecting projector 2 from computer 1 in a manner similar to the first embodiment.
  • the second embodiment of the present invention differs from the first embodiment in that identifier assigning means 105 is removed, and identifier display means 203 is replaced with IP address display means 206 .
  • Computer 1 comprises search client 11 having projector search means 101 and preview image requesting means 109 ; and dialog display 15 .
  • Projector 2 in turn comprises search response server 21 having search response means 201 , display presence/absence checking means 203 , IP address display means 206 , preview image generating means 207 , and preview image transmitting means 209 ; and projector information storage 25 .
  • projector search means 101 transmits a search command to network 9 for searching for projectors 2 , and acquires projector information including the projector name, IP address, status, and the like as a response from each projector 2 .
  • Preview image requesting means 109 transmits an image request command to network 9 for requesting a preview image which is a scale-down version of an image displayed on the screen by projector 2 , and acquires the preview image as a response to the image request command from projector 2 .
  • Dialog display 15 visually provides the user with he projector information and preview image which make up a user interface.
  • search response means 201 receives the search command from network 9 , and returns the projector information including the projector name, IP address, and the like.
  • Display presence/absence checking means 203 checks the status indicating whether projector 2 has already made any display.
  • IP address display means 206 upon receipt of a search command from network 9 , displays the IP address set for projector 2 on the screen, but does not display the IP address of projector 2 if it has already made a display.
  • Preview image generating means 207 generates a preview image which is scale-down version of an image displayed on the screen by projector 2 based on the displayed IP address or an existing display.
  • Preview image transmitting means 209 receives an image request command from network 9 , and returns the preview image generated by preview image generating means 207 .
  • Projector information storage 25 preserves the projector information including the projector name, IP address, status, and the like in a storage device or a memory.
  • a program for implementing the projector selection system according to the second embodiment of the present invention can cause the computer and the search response server of the projector to function as the projector selection system.
  • search client 11 transmits search command T- 1 for searching projectors 2 to network 9 using projector searching means 101 , and waits for a response to search command T- 1 .
  • Search response server 21 upon receipt of search command T- 1 , reads the projector name, IP address, and the like from projector information storage 25 , while acquiring the status indicating whether or not projector 2 is making a display from display presence/absence checking means 203 , and returns projector information R- 1 including the projector name, IP address and status, using search response means 201 .
  • Search client 11 passes the received projector information to dialog display 15 for displaying the projector information on the screen.
  • Search response server 21 upon receipt of search command T- 1 , displays the IP address set for projector 2 on the screen using IP address display means 206 . However, if projector 2 has already displayed an image, the IP address is not displayed.
  • search response server 21 generates a preview image, which is a scale-down version of the image displayed on the screen by projector 2 , based on the displayed IP address or an existing display using preview image generating means 207 .
  • search client 11 transmits image request command T- 3 for requesting a preview image using preview image requesting means 109 .
  • Search response server 21 upon receipt of image request command T- 3 , returns the generated preview image as image data R- 3 using preview image transmitting means 209 .
  • Search client 11 passes the received image data to dialog display 15 for displaying the preview on the screen.
  • a program for implementing the projector selecting method according to the second embodiment of the present invention can permit the computer and the search response server of the projector to execute the projector selecting method.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Computing Systems (AREA)
  • Health & Medical Sciences (AREA)
  • Multimedia (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Projection Apparatus (AREA)
  • Selective Calling Equipment (AREA)
  • Computer And Data Communications (AREA)
  • Information Transfer Between Computers (AREA)
US11/016,868 2004-01-21 2004-12-21 Projector selection system, projector selecting method, and program for implementing the system and method Abandoned US20050157218A1 (en)

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JP2004-013083 2004-01-21
JP2004013083A JP2005210284A (ja) 2004-01-21 2004-01-21 プロジェクタの選択システム、プロジェクタの選択方法及びそのプログラム

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