NETWORK SYSTEM OF PROJECTOR

• US 20110055325A1
• Filed: 11/09/2010
• Published: 03/03/2011
• Est. Priority Date: 01/21/2004
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: KUBOTA, Shinji
• Granted Patent: US 8,640,196 B2
• Time in Patent Office: Days
• US Class Current: 709/203
• CPC Class Codes: H04L 65/403 Arrangements for multi-party communication, e.g. for conferences data switching systems for conference H04L12/18; arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities H04M3/56; television conferencing systems H04N7/15
• CPC Class Codes: H04N 5/74 Projection arrangements for image reproduction, e.g. using eidophor
• CPC Class Codes: H04N 7/18 Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Abstract

A network system of a projector is provided in which a network connection is established between a plurality of information terminal apparatus and the projector, and an image data file owned by an information terminal apparatus can be commonly used. A network system of a projector is arranged by an information terminal apparatus and a projector connectable to the information terminal apparatus via a network. The information terminal apparatus is arranged by a personal computer which supplies image data to the projector, and personal computers which are connected to this personal computer by a wireless manner. When the network connection is established between the personal computer and the projector, and when the network connection between the personal computer and the personal computers is established, the image data is commonly used among these personal computers

Claims

1. (canceled)

2. A projector capable of communicating with a computer supplying an image signal via a network, the projector comprising:

a password production unit that outputs a first password to be inputted to the computer,

a network interface that receives a second password that is transmitted with a connection request from the computer to the projector,

a display control unit that produces an image of the first password and determines a position on a screen for displaying image data based on the image signal, and

a projection unit that projects an image, on the screen, based on the image data and the first password so as to allow the second password to be transmitted from the computer, wherein when the first password matches the second password that has been transmitted from the computer, the projection unit displays the image data and the first password such that the first password is displayed at a different position on the screen from the previously determined position so that the displayed first password does not impede visual recognition of the image data corresponding to the image signal supplied by the computer.

3. The projector according to claim 2 further comprising a storage unit that stores a specific code used by the computer for establishing connection with the projector, the image data including the first password produced by the display control unit including the specific code.

4. The projector according to claim 2, the password production unit producing the first password by using a random number table when the projector is turned ON.

5. The projector according to claim 2, the projector further comprising a password production instructing unit that instructs the password production unit to produce the first password when an operation for producing the first password is received.