PROJECTOR SYSTEM

• US 20070229771A1
• Filed: 03/30/2007
• Published: 10/04/2007
• Est. Priority Date: 04/04/2006
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Fujimori, Toshiki
• Granted Patent: US 8,296,572 B2
• Time in Patent Office: Days
• US Class Current: 353/40
• CPC Class Codes: G06F 21/84 output devices, e.g. displays or monitors
• CPC Class Codes: H04N 5/74 Projection arrangements for image reproduction, e.g. using eidophor

Abstract

A projector system is disclosed. The projector system includes an information processing apparatus supplying image data on which an image process is performed to a projector and the projector protecting an image based on the image data supplied from the information processing apparatus, wherein the projector includes a device connection unit of the projector which enables communication between the information processing apparatus and the projector, a password generating unit of the projector which generates a password used for determining whether to start a process for projection; and an encryption unit of the projector which encrypts the password and outputs the encrypted password to the information processing apparatus through the device connection unit of the projector, and wherein the information processing apparatus includes a device connection unit of the information processing apparatus which enables communication between the projector and the information processing apparatus, a decryption unit of the information processing apparatus which decrypts the encrypted password input through the device connection unit of the information processing apparatus using a decryption key, and a password determining unit of the information processing apparatus which has functions of determining whether the decrypted decryption password is correct and outputting a signal directing to start the process for projection to be performed by the information processing apparatus in a case where the decrypted password is correct.

Claims

1. A projector system comprising:

an information processing apparatus supplying image data on which an image process is performed to a projector; and

the projector projecting an image based on the image data supplied from the information processing apparatus,

wherein the projector includes;

a device connection unit of the projector which enables communication between the information processing apparatus and the projector;

a password generating unit of the protector which generates a password used for determining whether to start a process for projection; and

an encryption unit of the projector which encrypts the password and outputs the encrypted password to the information processing apparatus through the device connection unit of the projector, and

wherein the information processing apparatus includes;

a device connection unit of the information processing apparatus which enables communication between the projector and the information processing apparatus;

a decryption unit of the information processing apparatus which decrypts the encrypted password input through the device connection unit of the information processing apparatus using a decryption key; and

a password determining unit of the information processing apparatus which has functions of determining whether the decrypted decryption password is correct and outputting a signal directing to start the process for projection to be performed by the information processing apparatus in a case where the decrypted password is correct.

2. The projector system according to claim 1,

wherein the password determining unit of the information processing apparatus has a function of outputting the decrypted password to the projector through the device connection unit of the information processing apparatus, and

wherein the projector further includes a password determining unit of the projector which determines whether the decrypted password input through the device connection unit of the projector is correct and outputs a signal directing to start the process for projection to be performed by the projector in a case where the decrypted password is correct.

3. The projector system according to claim 1,

wherein the information processing apparatus further includes a password generating unit of the information processing apparatus which generates a same password as the password generated by the projector, and

wherein the password determining unit of the information processing apparatus determines whether the decrypted password is correct by comparing the decrypted password with the password generated by the password generating unit of the information processing apparatus.

4. The projector system according to claim 1,

wherein the information processing apparatus acquires the decryption key through a network.

5. The projector system according to claim 1,

wherein the projector has functions of keeping encrypted correction information generated by encrypting correction information which is used for performing inherent correction of the projector and sending the encrypted correction information and the encrypted password to the information processing apparatus.

6. The projector system according to claim 1,

wherein the password is generated by using information that changes by value.

13. The projector system according to claim 1,

wherein the password and the decryption Key are generated based on an inherent number of the projector.

7. A projector system comprising:

an information processing apparatus supplying image data on which an image process is performed to a projector; and

the projector projecting an image based on the image data supplied from the information processing apparatus;

wherein the information processing apparatus includes;

a device connection unit of the information processing apparatus which enables communication between the projector and the information processing apparatus;

a password generating unit of the information processing apparatus which generates a password used for determining whether to start the process for projection; and

an encryption unit of the information processing apparatus which encrypts the password and outputs the encrypted password to the projector through the device connection unit of the information processing apparatus, and

wherein the projector includes;

a device connection unit of the projector which enables communication between the information processing apparatus and the projector;

a decryption unit of the projector which decrypts the encrypted password input through the device connection unit of the projector using a decryption key; and

a password determining unit of the projector which has functions of determining whether the decrypted decryption password is correct, and outputting a signal directing to start the process for projection to be performed by the projector in a case where the decryption password is correct.

8. The projector system according to claim 7,

wherein the projector further includes a password generating unit of the projector which generates a password used for determining whether to start the process fox projection, and

wherein the password generating unit of the information processing apparatus generates a same password as the password generated by the password generating unit of the projector.

9. The projector system according to claim 7,

wherein the projector sends an authentication signal to the information processing apparatus when the decrypted password is correct, and

wherein the information processing apparatus further includes a projection process start signal output unit which outputs a signal which directs to start the process for projection to be performed by the information processing apparatus based on the authentication signal, sent from the projector.

10. The projector system according to claim 7,

wherein the projector has functions of keeping execution program which is used for performing the process for projection to be performed by the information processing apparatus in the information processing apparatus and sending the execution program to the information processing apparatus in a case where the decrypted password is correct, and

wherein the information processing apparatus performs the process for projection to be performed by the information processing apparatus using the execution program sent from the projector.

11. The projector system according to claim 7,

wherein the projector has functions of keeping correction information used for performing inherent correction of the projector and sending the correction information to the information processing apparatus in a case where the decrypted password is correct, and

wherein the information processing apparatus corrects the image data using the correction information sent from the projector.

12. The projector system according to claim 7,

wherein the password is generated by using information that changes by value.

14. A projector used for a projector system having an information processing apparatus supplying image data on which an image process is performed to the projector and the projector projecting an image based on the image data supplied from the information processing apparatus, the projector comprising:

a device connection unit of the projector which enables communication between the information processing apparatus and the projector;

a password generating unit of the projector which generates a password used for determining whether to start a process for projection; and

an encryption unit of the projector which encrypts the password and outputs the encrypted password to the information processing apparatus through the device connection unit of the projector.