A method for safely shutting down a set-top box
A set-top box and security technology, applied in image communication, selective content distribution, electrical components, etc., can solve problems such as hard disk track damage, data loss, and inability to store user information safely, achieving the effect of increasing security
Inactive Publication Date: 2015-08-12
LE SHI ZHI ZIN ELECTRONIC TECHNOLOGY (TIANJIN) LTD
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Problems solved by technology
However, neither the power cut off nor the infrared power off method can safely save user information
[0007] There is a buffer in the Linux system. When the user is operating the U disk (especially writing operations), some data will be kept in the cache of the Linux system. If the power is directly cut off at this time, this part of the data will be lost
If the user is operating the hard disk, if the power is directly cut off, not only will the data be lost, but after a long time it will cause damage to the hard disk track, resulting in the scrapping of the hard disk
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[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments. The correspondence between constituent elements in the claims and specific examples in the embodiments can be exemplified as follows. The description herein is intended to confirm that specific examples used to support the subject matter stated in the claims are described in the embodiments, and since an example is described in the embodiments, it does not mean that the specific examples do not represent constituent elements. Conversely, even if a specific example is included here as an element characteristic corresponding to one constituent element, it does not mean that the specific example does not represent any other constituent element.
[0025] Furthermore, the description herein does not imply that all subject matter corresponding to specific examples set forth in the embodiments are recited in the claims. In other words, the d...
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The invention provides a method for safely powering off an STB (Set Top Box). The method comprises the following steps of receiving a first power-off command sent by a remote controller by the STB; preserving data information of a user by the STB; judging whether a storage device needs to be connected or not by the STB; switching off a command for operating the storage device by the STB if the STB is connected with the storage device; unloading an external device if the external device exists in the STB; sending a second power-off command to an SCM (Single Chip Microcomputer) by the STB; and safely powering off the STB. Compared with the prior art, the method for safely powering off the STB, provided by the invention, is realized by carrying out communication with the SCM, the safety performance of the STB is increased, data loss caused by direct interruption of power supply cannot be caused, the user information can be safely preserved, or the storage device such as a USB (Universal Serial Bus) flash disk can be safely unloaded.
Description
technical field [0001] The invention relates to the technical field of digital television, and more specifically, to a method for safely shutting down a set-top box. Background technique [0002] In recent years, China's digital TV industry, especially the cable digital TV industry, has continued to develop rapidly. The digital TV set-top box market has developed simultaneously with the overall conversion of digital TV, and the market size has continued to grow. Therefore, the set-top box is becoming an indispensable household device for more and more users. [0003] A set-top box (STB) is a device that connects your TV to an external signal source. The set-top box can convert the compressed digital signal into the content of the TV program, so that the corresponding TV program can be played on the TV. The digital signal may originate from cable, satellite dish, broadband network or terrestrial broadcast. In addition to receiving images and sounds in TV programs, the set-...
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IPC IPC(8): H04N21/422H04N21/43
Inventor 刘建龙孟伟平
Owner LE SHI ZHI ZIN ELECTRONIC TECHNOLOGY (TIANJIN) LTD