Projection display device and method for improving security of projection display device

A technology of projection display and password verification, which is applied in the field of projection display, can solve problems such as damage to projection display devices, management and use problems of projection display devices, and achieve the effect of strengthening protection

Inactive Publication Date: 2006-10-04
LENOVO (BEIJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the existing projection display devices cannot restrict users, many malicious or non-malicious operations, such as: turning on and off the ceiling-mounted projector at will, or visitors using the command input unit to op

Method used

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  • Projection display device and method for improving security of projection display device
  • Projection display device and method for improving security of projection display device
  • Projection display device and method for improving security of projection display device

Examples

Experimental program
Comparison scheme
Effect test

Example

[0082] The first embodiment:

[0083] When the projection display device is used in the method described in this embodiment, the use security of the projection display device is improved by adding an authorization verification process for performing an operation and setting a verification password for the operation.

[0084] First, the projection display device adds an authorization verification process for performing certain or certain operations in advance, and presets and saves the verification password required for authorization verification.

[0085] The verification password used in the above authorization verification may be a keyboard identification (KeypadPassword), a remote control identification (IRPassword), a key remote control identification (KeyIRPassword), or a user password (UserPassword). Among them, the keyboard identification, remote control identification, and key remote control identification are all input device identifications. The projection display device...

Example Embodiment

[0142] Embodiment two:

[0143] After the user issues a password setting instruction by pressing the key, the password verification unit performs the password setting operation to modify the UserPassword process as follows:

[0144] Step 601: The password verification unit judges whether the password setting this time is over, if it is over, execute step 603, otherwise, execute step 602.

[0145] The above method for judging whether the password setting is over is: when the password verification unit receives the end character of the password setting, it judges that the current password setting is over.

[0146] Step 602: The password verification unit decodes and stores the entered password, and then returns to step 601.

[0147] Step 603: The password verification unit judges whether the user sets a password for the first time in step 601, and if yes, execute step 604, otherwise, execute step 605.

[0148] Step 604: The password verification unit saves the password set for the f...

Example Embodiment

[0156] Embodiment three:

[0157] The projection display device adds an authorization verification process for the startup operation in advance. When the user sends a startup instruction through the button, the projection display device performs the startup operation process as follows:

[0158] 1. After the user issues a boot command, the core control module determines that the command is legal, and the core control module starts the boot operation.

[0159] 2. The core control module determines that the operation requires authorization verification according to the authorization attribute of the power-on operation, and then triggers the password verification unit to perform authorization verification.

[0160] 3. The password verification unit judges whether the password entered by the user is correct. If it is correct, the projection display device completes the power-on operation; otherwise, an unauthorized operation is performed, and the core control module ends the process o...

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PUM

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Abstract

The disclosed projection display device comprises: an input unit to receive and send user command and key to the next, an electronic unit to receive signal from last unit and the video signal and convert the video signal into optical control signal, an optical unit to receive and display the optical control signal, a power supply, and a cipher verification unit to receive and verify and return the input code. This invention can ensure the authorization.

Description

technical field [0001] The invention relates to the field of projection display, in particular to a projection display device and a method for improving the safety of the projection display device. Background technique [0002] A projection display device is a commonly used display device. The device provides a video input interface, and displays various video signals on the screen in a projection mode, so as to realize large-size, high-quality image display at a lower cost. Projection display devices are widely used in business presentations, school teaching, business entertainment, home entertainment, etc. figure 1 Shown is the composition structure of a common projection display device. [0003] Such as figure 1 As shown, the projection display device used in the prior art includes an electronic unit 101 , an instruction input unit 106 , a power supply 107 and an optical unit 108 . [0004] 1. The electronic unit 101 is used to receive and process the video signal inp...

Claims

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Application Information

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IPC IPC(8): G03B21/00H04N5/74H04N9/31
Inventor 王振华
Owner LENOVO (BEIJING) CO LTD
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