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Patent
Tencent Technology Shenzhen Co. | Date: 2017-02-07

A method and a device for obtaining virus signatures in the field of computer security have been disclosed. The method includes: obtaining text strings contained in each virus sample within a virus sample set; selecting text strings for use as virus signatures candidate according to a first frequency at which each text string occurs in a non-virus sample set and a second frequency at which each text string occurs in the virus sample set; calculating an information entropy of the virus signatures candidate according to a quantity of virus samples containing the virus signatures candidate and a quantity of non-virus samples containing the virus signatures candidate; and selecting virus signatures from the virus signatures candidate according to the information entropy. The present disclosure may timely identify the latest virus signatures and ensure that the obtained virus signatures are optimal signatures and may identify a wide range of virus variants.


Patent
Tencent | Date: 2017-01-18

The disclosure discloses a video enhancement method and device, and belongs to the field of image processing. The method includes that: each frame in a video is sequentially acquired; and for each current frame, attribute information reflecting a moving state or luminance is determined, a preset mapping relationship is searched to obtain a control parameter corresponding to the attribute information, and video enhancement operation is executed on the current frame by using the control parameter. The device includes: an acquisition module and an enhancement module. By the disclosure, the problem of processing inflexibility caused by execution of the same enhancement over each frame in the video is solved, each frame in the video may be differentially enhanced, frame-based video enhancement is implemented, a video enhancement effect is effectively improved, and quality of the video is improved.


Patent
Tencent | Date: 2017-01-24

A method for capturing a picture includes: capturing a first picture; overlapping the first picture with a framed image for framing a second picture, and displaying an overlapped picture, where transparency of the first picture is different from transparency of the framed image; receiving a selecting signal to select a target reserved region of the first picture, or to select a region of the framed image as a target reserved region of the second picture; capturing the second picture; and combining the target reserved region of the first picture and the second picture into one picture, or combining the first picture and the target reserved region of the second picture into one picture.


The present invention provides a method and a device for displaying instant messaging messages. The method includes detecting that an instant messaging message to be displayed includes a hyperlink; when it is detected that the instant messaging message comprises the hyperlink, pulling out abstract information corresponding to the hyperlink; filling the pulled-out abstract information in an inserted control; and displaying the instant messaging message as well as the control. The device includes a detection module, a pulling module and a display module. The invention is able to display to users the content of the hyperlink contained in the instant messaging message, therefore improving the usability and interactivity of the Instant Messenger and raising the users experiences.


A natural language question answering method and apparatus belong to the field of information retrieval and processing. The method includes: acquiring a natural language question N; converting the natural language question N into a query semantic graph Qs, each edge in the query semantic graph Qs representing one semantic relation in the natural language question N; searching an RDF graph G for a subgraph matching the query semantic graph Qs; and obtaining an answer to the natural language question N according to the subgraph.


A communications method and apparatus based on a social application are provided, which belong to the field of the Internet. The method includes: acquiring at least one second user according to location information of a current terminal and a specified application identifier, the second user being a user whose geographical location is in a preset range of the current terminal; determining, when receiving a first selection instruction with respect to any user among the at least one second user, the second user corresponding to the first selection instruction as a target user, and acquiring a communication message to be sent, the communication message carrying a first user identifier of a user that has logged in to a specified application on the current terminal, a target user identifier, and second message content; sending the communication message to a specified application server when receiving a sending instruction, so that the specified application server sends the first user identifier and the second message content to the target user according to the target user identifier.


A method and device for transmitting data between a peripheral device and a user device via a Bluetooth Low Energy connection, comprising: at the peripheral device: transmitting data to the user device in a simulated data stream, the transmitting comprising: identifying a first Bluetooth characteristic for writing data, the first Bluetooth characteristic having been exposed by the peripheral device to the user device; dividing a data packet into a sequence of data frames plus zero or one remainder, each data frame having a respective size equal to a predetermined data size of the identified first Bluetooth characteristic; and for each of the sequence of data frames: writing the data frame to a respective value for the identified first Bluetooth characteristic; and pushing the identified first Bluetooth characteristic for reading by the user device.


Patent
Tencent | Date: 2017-03-29

A control method and apparatus for data display are described. The method includes: receiving, by a first client at current time, first target data pushed by a second client; determining, by the first client, whether the first target data pushed by the second client has been received within a first predetermined time period before the current time; and determining, by the first client at least according to the number of times that the first target data is received within the first predetermined time period and whether the first target data received within the first predetermined time period has been displayed on the first client, whether to display, on the first client, the first target data received at the current time if the first client determines that the first client has received, within the first predetermined time period, the first target data pushed by the second client.


Patent
Tencent | Date: 2017-03-01

The present disclosure provides a group positioning method the method includes: acquiring position information corresponding to positioned user identifiers in a group, to obtain a position information set and determining a group central position according to the position information set, the number of geographical distance values that are less than or equal to a preset distance threshold among geographical distance values between the group central position and geographical positions represented by position information in the position information set being maximized. With the group positioning method provided by the present disclosure, the number of group members carrying out activities in a circular area that uses the group central position as the center and the preset distance threshold as the radius is maximized. The group central position determined in this manner can reflect actual geographical positions of as many members as possible in the group, and therefore, the group central position can reflect an actual geographical position of the group. The present disclosure further provides a group positioning system.


Patent
Tencent | Date: 2017-01-18

Embodiments of the present disclosure disclose a malicious call recognition method and apparatus, and belong to the field of mobile communication. The method includes: obtaining call detail record information of the call when a local end makes a call to a peer end, the call detail record information of the call including a call record of the local end within first preset duration that is closest to current time, and/or a call record of the peer end within the first preset duration that is closest to the current time; matching the call detail record information of the call with a malicious model corresponding to a malicious call event included in a preset malicious model library; and determining the call to be a malicious call if the malicious model that matches with the call detail record information of the call is found.

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