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180 results about "Computer usage" patented technology

Computer assembly

The invention discloses a computer assembly, comprising a base, a panel personal computer and a back plate which is connected with the base by a rotating shaft; the panel personal computer comprises afirst assembly structure which is arranged at a first side edge of the panel personal computer, a second assembly structure which is arranged at a second side edge of the panel personal computer, andthe first side edge and the second side are opposite in parallel; the back plate comprises a first fixing structure which is arranged on a third side edge of the back plate, and the position of the first fixing structure corresponds to the first assembly structure; a second fixing structure which is arranged at a fourth side edge of the back plate, and the position of the second fixing structurecorresponds to the second assembly structure, the third side edge and the fourth side edge are opposite in parallel; by matching the first assembly structure and the first fixing structure and the second assembly structure and the second fixing structure, the panel personal computer is fixed in the back plate, by releasing the second assembly structure and the second fixing structure, the panel personal computer is separated from the inner part of the back plate. In the invention, the panel personal computer is fixed in the back plate for being used as a notebook PC, or is used independently by being detached from the inner part of the back plate.
Owner:LENOVO (BEIJING) CO LTD

Computer permission control method based on mobile dynamic password

The invention relates to a computer permission control method based on a mobile dynamic password. The computer permission control method based on the mobile dynamic password comprises the following steps: generating a private key and a public key by adopting encryption algorithm at an personal computer (PC) end and sending the public key to a mobile end; encrypting a PC management password, using time and permission level information which are stored at the mobile end in advance by adopting the public key after the mobile end receives the public key, generating a ciphertext string, and then sending the ciphertext string to the PC end; deciphering the ciphertext string by adopting the private key after the PC end receives the ciphertext string, getting the PC management password, the using time and the permission level information; and conducting a password authentication with the PC end by using the PC management password information. When the PC end passes the password authentication, computer permission is opened according to the using time and the permission level information. When the PC end does not pass the password authentication, the computer permission ends. Compared with the prior art, the computer permission control method based on the mobile dynamic password has the advantages of being capable of achieving a remote control of the using time and the permission of a computer by a mobile, convenient to use, good in safety and the like.
Owner:TONGJI UNIV
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