LED display screen encryption method, encrypted LED display screen and LED display screen control device
A technology of LED display and encryption method, which is applied in the direction of static indicators, internal/peripheral computer component protection, instruments, etc., can solve the problem that the encryption method of LED display is easy to crack, and achieve the effect of improving the difficulty of cracking
Active Publication Date: 2016-05-18
深圳雷美瑞智能控制有限公司
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AI Technical Summary
Problems solved by technology
[0005] The technical problem mainly solved by the present invention is to provide an LED display encryption method, an encrypted LED display and an LED display control device, which can solve the problem that the LED display encryption method in the prior art can be easily cracked
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no. 1 example
[0021] Such as figure 1 As shown, the first embodiment of the LED display screen encryption method of the present invention includes:
[0022] S110: The sending card periodically generates an encrypted packet and sends it to the control module of the LED display.
[0023] Generally speaking, the sending card is a supporting part of the LED display, which is used to connect the LED display and the control host, obtain the display content and other information from the host and send it to the LED display. Each encrypted package is obtained by encrypting the corresponding time stamp with a preset password, for example, using the preset password as a key to encrypt the corresponding time stamp. The sending card has its own clock function, and the corresponding time stamp is a sequence of characters, which uniquely identifies the system time of the sending card when it starts to generate encrypted packets. The sending card can embed the encrypted packet into the image data to sen...
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The invention discloses an LED display screen encryption method. The LED display screen encryption method comprises the following steps that: a sending card generates an encrypted packet in a timed manner and sends the encrypted packet to a control module of an LED display screen; the control module receives the encrypted packet and decrypts the encrypted packet by using a stored preset password so as to obtain a corresponding timestamp; and, if the control module does not receive the encrypted packet after a preset time interval, the control module cannot decrypt the encrypted packet, the timestamp obtained after decryption is greater than or equal to a stored preset time node or adjacent timestamps have time stagnation or time back, the control module locks the LED display screen, such that the LED display screen cannot display a content, which users want to display, before correct unlocking information is input. The invention further discloses an encrypted LED display screen and an LED display screen control device. By means of the manner, the timestamp can be obtained from the sending card; the LED display screen is locked if the timestamp is greater than or equal to the preset time not; breaking can be prevented through multiple manners; and thus, the breaking difficulty of a time lock is effectively increased.
Description
technical field [0001] The invention relates, in particular, to an LED display screen encryption method, an encrypted LED display screen and a LED display screen control device. Background technique [0002] LED display is a flat-panel display device composed of individual LEDs. It is widely used in indoor and outdoor information display, advertising, video playback and other fields. It has the advantages of high brightness, wide viewing angle, and long life. [0003] At present, LED display screens generally adopt the method of installment payment sales, that is, the end user pays part of the first payment first, pays part of the payment after the installation is completed, and pays the balance after the acceptance is correct. If a user delays payment, due to the high cost of the LED display itself, it will bring a great economic burden to the LED display manufacturer, and even cause the LED display to go bankrupt due to insufficient capital turnover. [0004] In the prior...
Claims
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Login to View More IPC IPC(8): G06F21/84G09G3/32
CPCG06F21/84G09G3/32
Inventor 杨光
Owner 深圳雷美瑞智能控制有限公司