Abstract: A method for controlling read rights of digital contents includes receiving, by a first service node, digital content information from a second service node implemented by a second server, wherein the digital content information includes digital contents and read rights of the digital contents, and both the first service node and the second service node are service nodes authenticated by a root service node, transmitting, by the first service node, a verification request to the root service node to verify whether the digital content information is authorized by the root service node, and parsing, by the first service node, the digital content information to obtain the digital contents and the read rights of the digital contents if a verification result shows that the digital content information is authorized by the root service node. An apparatus and system for implementing the method are also provided.

Abstract: A method for displaying an electronic document includes obtaining a reading mark of the electronic document, which is recorded at a last display of the electronic document; identifying a content of the electronic document corresponding to the reading mark under a current reading mode; and displaying the identified content. A reading device that performs the disclosed method is also provided.

Abstract: Embodiments of the present disclosure relate to the field of printed circuit boards and particularly to a multi-layer printed circuit board. The multi-layer printed circuit board includes at least two inner-layer circuit boards, each of which has a non-circuit pattern area including a welding area. Each welding area has at least one welding hole. Further, at least one prepreg is used to fill between two adjacent inner-layer circuit boards and is melted to fill into the welding hole in a welding process. In the multi-layer printed circuit board according to the embodiments of the disclosure, a welding area is arranged in a non-circuit pattern area, and one or more welding holes are arranged in the welding area so that a prepreg between two inner-layer circuit boards can be melted filling into the welding hole(s) in a welding process, thus enhancing effectively an adhesive force binding the inner-layer circuit boards.

Abstract: A fabrication method for thickening pad metal layers comprises: growing a first metal layer on a silicon substrate; etching the first metal layer to obtain a metal wire comprising a metal fuse and a pad; growing a passivation layer on the metal wire; etching the passivation layer to obtain a first window to expose a pad area; growing a second metal layer on the passivation layer having the first window; etching the second metal layer to obtain a metal layer covering the pad area only and expose the passivation layer outside the pad area; and etching the passivation layer outside the pad area to obtain a second window to expose a metal fuse area.

Abstract: The invention discloses a method for manufacturing a dual-layer polysilicon gate. The method includes: depositing silicon nitride on silicon oxide of an integrated circuit to be processed; performing anisotropic etching on the silicon nitride to form sidewalls of silicon nitride on sidewalls of a first layer of polysilicon gate of the integrated circuit to be processed; manufacturing a second layer of polysilicon gate; and rinsing the sidewalls of silicon nitride.

Abstract: The invention discloses a printed circuit board compensation processing method for fabricating a BGA despite a small distance between a line and a pad of the BGA. The method includes compensating a pad and/or a line under a predetermined condition, and removing a portion of the pad facing the line by a second predetermined width when the shortest distance between the compensated line and pad is smaller than a first predetermined distance. The invention further discloses a device for performing the method and a PCB fabricated using the method.

Abstract: A method for processing handwriting input includes determining a first boundary point and a second boundary point corresponding to each target track point, forming an enclosed area by connecting all first boundary points determined for all target track points, connecting all second boundary points determined for all the target track points, connecting the first boundary point corresponding to the first target track point with the second boundary point corresponding to the first target track point, and connecting the first boundary point corresponding to the last target track point with the second boundary points corresponding to the last target track point, and filling the enclosed area.

Abstract: A digital right management method, including: generating, by a first user equipment having access right to shared digital contents, a common public key based on one or more public keys of one or more second user equipments intended to share the digital contents, respectively; encrypting, by the first user equipment, a key of the digital contents with the common public key to generate a ciphertext of the key of the digital contents; generating, by the first user equipment, from the ciphertext a new authorization certificate corresponding to the digital contents; and transmitting, by the first user equipment, the new authorization certificate and the digital contents to the second user equipments to instruct the second user equipments to share the digital contents in accordance with the new authorization certificate.

Abstract: The invention discloses a method and a device for providing location-based electronic information. In some embodiments, the method comprises the following steps: receiving an electronic information request carrying location information from a user terminal; querying pre-stored various electronic information for electronic information corresponding to the location information carried in the electronic information request; and providing the electronic information obtained from the query to the user terminal.

Abstract: A digital rights management service control method, including: receiving an authorization file request transmitted from a client terminal for a selected service operation; obtaining an authorization file template matching an authorization type included in the authorization file request; generating, based on the obtained authorization file template, an authorization file including digital resource feature information included in the authorization file request and rights feature information; and transmitting the generated authorization file to the client terminal.

Abstract: Disclosed is a method for treating wastewater containing at least one copper complex, comprising: 1) providing the wastewater containing the at least one copper complex, wherein the at least one copper complex is chosen from EDTA-Cu2+ complex and ammonia-Cu2+ complex; 2) adjusting pH of the wastewater containing the at least one copper complex to be within a range from 2.0 to 3.0, and adding ferrous sulfate to convert copper in the wastewater into a form of cuprous ions; and 3) adjusting pH of the wastewater obtained in step 2) to be within a range from 8.0 to 10.5, so that the cuprous ions in the wastewater are converted into precipitates of cuprous hydroxide and/or precipitates of cuprous oxide.

Abstract: A method for providing a digital content, including: determining, by a first device, a digital content to be synchronized in progress upon determining that a synchronization trigger condition is satisfied; obtaining, by the first device, current browsing progress information of the digital content; and transmitting, by the first device, a content identifier of the digital content and the current browsing progress information to a second device, to instruct the second device to store the current browsing progress information corresponding to the digital content identified by the content identifier.

Abstract: A method for adjusting spacing between characters comprises determining a character pair from a font kit. The character pair comprises two characters and has a spacing value. The method further comprises acquiring glyph outline data of the character pair, plotting the glyph outline data of the character pair, displaying the character pair on an interface, adjusting the spacing value from a first spacing value to a second spacing value, and changing, while adjusting the spacing value, a spacing between the two characters displayed on the interface along with a change of the spacing value.

Abstract: A method for rasterizing a transparent page comprises interpreting the transparent page to obtain graphic entities, transparency properties of the graphic entities, and profile information of the graphic entities; dividing the transparent page into a transparent area and a nontransparent area according to the transparency properties of the graphic entities; identifying, from the graphic entities, an overlapping graphic entity having an overlapping portion with the transparent area according to the profile information of the graphic entities; and dividing the transparent area into a de-transparentizing area and an ultimate transparent area by using the overlapping graphic entity.

Abstract: A method for digital content security cooperation, including: creating, by a first content possessing device, a cooperation content packet of digital contents and transmitting the created cooperation content packet to at least one of a second content possessing device or a first content cooperating device, wherein the cooperation content packet includes an attribute data block and a content data block; and performing, by the first content cooperating device receiving the cooperation content packet, privilege verification according to the cooperation content packet, and after the privilege verification is passed, updating the information in the content data block in the cooperation content packet, and transmitting the cooperation content packet including the updated information to at least one of a second content cooperating device or the first content possessing device.

Abstract: A method for processing data of a scanned book having a plurality of pages is disclosed. The method includes obtaining page image data from a page. The method further includes segmenting and recognizing the page image data to obtain locations of rectangular boxes corresponding to the respective characters and text codes for the respective characters. The method also includes obtaining respective aggregated character line information for each line of characters. The method further includes adjusting the rectangular boxes in accordance with the obtained aggregated character line information.

Abstract: A digital right management method, including: encrypting, by a first user equipment which has access right to shared digital contents, a key of the digital contents with at least an equipment key of a second user equipment intended to share the digital contents to generate a ciphertext of the key of the digital contents; generating, by the first user equipment, from the ciphertext a new authorization certificate corresponding to the digital contents; and transmitting, by the first user equipment, the new authorization certificate and the digital contents to the second user equipment to instruct the second user equipment to share the digital contents in accordance with the new authorization certificate.

Abstract: A method of manufacturing a printed circuit board (PCB) is provided. The method includes defining an area on the PCB to be subjected to a controlled-depth milling. The area includes a warp. The method further includes providing a plurality of positioning holes adjacent to edges of the area of the PCB, installing positioning members in the positioning holes so as to fix the PCB on a flat surface of a table of a milling equipment, and milling the area of the PCB. A PCB is also provided. The PCB includes a controlled-depth area containing patterns and having a surface lower than a surface of the PCB. The PCB further includes a plurality of positioning holes formed adjacent to edges of the controlled-depth area.

Abstract: Techniques, devices and systems for publishing digital contents such as encyclopedia are provided. One method for such digital publishing includes obtaining entries of encyclopedic resource files; indexing attributes of each of the entries by using preset indexing rules; reorganizing the entries based on the attributes; and publishing the reorganized entries by applying a preset template.

Abstract: A method for detecting a registration offset is disclosed. The method includes transferring a first pattern to a metal layer on a first side of a printed circuit board (PCB) substrate. The first pattern has a reference scale. The method further includes transferring a second pattern to a metal layer on a second side opposite to the first side of the PCB substrate. The second pattern has a measurement scale. The second pattern is transferred by aligning an origin of the measurement scale with an origin of the reference scale in an apparatus such that at least a portion of the reference scale is overlapped with the measurement scale. The method includes etching the metal layers of the PCB substrate and measuring an offset in the patterns on the PCB substrate by using the reference scale and the measurement scale.