Abstract: An identity certificate may be issued to a blockchain node. The issuance may include issuing a first identity certificate to a first terminal and receiving a second identity certificate issuance request that is from the first terminal. A second identity certificate may be issued to the first terminal, and a third identity certificate issuance request is received from the second terminal. A third identity certificate is issued to the second terminal, so that the second terminal forwards the third identity certificate to the third terminal.

Abstract: A clock signal generating circuit includes a crystal oscillator, a phase compensation circuit, a negative resistance compensation circuit, and a high pass filter circuit. The crystal oscillator generates a clock signal. The phase compensation circuit compensates a phase of the clock signal. The negative resistance compensation circuit filters phase noises of the clock signal. The high pass filter circuit filters low frequency noises of the clock signal.

Abstract: The invention discloses a method for controlling digital film play-count and a system thereof, wherein a play-count parameter is added into a KDM file where a key delivery message used for controlling film play is embedded, detecting the play-count parameter for a playing film, setting RSA key abstracts of an FDM packager of all authorized contracting film producers, safely importing the KDM and play-count into a security module, detecting the play-count parameter for a playing film. The film is not permitted to play unless existing play-count is less than the authorized play-count in the FDM. The invention fulfills the requirements and demands for controlling the distribution and playback of digital films in the second-tier market using technologies such as the authorized play-count and a method to charge on the basis of play-count.

Abstract: A clock signal generating circuit includes a crystal oscillator, a phase compensation circuit, a negative resistance compensation circuit, and a high pass filter circuit. The crystal oscillator generates a clock signal. The phase compensation circuit compensates a phase of the clock signal. The negative resistance compensation circuit filters phase noises of the clock signal. The high pass filter circuit filters low frequency noises of the clock signal.

Abstract: The invention discloses a method for controlling digital film play-count and a system thereof, wherein a play-count parameter is added into a KDM file where a key delivery message used for controlling film play is embedded, detecting the play-count parameter for a playing film, setting RSA key abstracts of an FDM packager of all authorized contracting film producers, safely importing the KDM and play-count into a security module, detecting the play-count parameter for a playing film. The film is not permitted to play unless existing play-count is less than the authorized play-count in the FDM. The invention fulfills the requirements and demands for controlling the distribution and playback of digital films in the second-tier market using technologies such as the authorized play-count and a method to charge on the basis of play-count.

Abstract: The invention discloses a method for controlling digital film play-count and a system thereof, wherein a play-count parameter is added into a KDM file where a key delivery message used for controlling film play is embedded, detecting the play-count parameter for a playing film, setting RSA key abstracts of an FDM packager of all authorized contracting film producers, safely importing the KDM and play-count into a security module, detecting the play-count parameter for a playing film. The film is not permitted to play unless existing play-count is less than the authorized play-count in the FDM. The invention fulfills the requirements and demands for controlling the distribution and playback of digital films in the second-tier market using technologies such as the authorized play-count and a method to charge on the basis of play-count.

Abstract: The invention discloses a method for controlling digital film play-count and a system thereof, wherein a play-count parameter is added into a KDM file where a key delivery message used for controlling film play is embedded, detecting the play-count parameter for a playing film, setting RSA key abstracts of an FDM packager of all authorized contracting film producers, safely importing the KDM and play-count into a security module, detecting the play-count parameter for a playing film. The film is not permitted to play unless existing play-count is less than the authorized play-count in the FDM. The invention fulfills the requirements and demands for controlling the distribution and playback of digital films in the second-tier market using technologies such as the authorized play-count and a method to charge on the basis of play-count.

Abstract: A production monitoring system for remotely monitoring a production device includes a database, a monitoring device, and a translating device. The database saves attribute data of the production device, and the attribute data includes operation signals, operation statuses, and production data. The monitoring device sends a monitoring message. The translating device translates attribute data sent by the production device into data recognizable to the monitoring device, and includes a parsing module and a performing module. The parsing module parses the attribute data sent by the production device, determines whether the attribute data matches previous attribute data, and classifies the attribute data if the attribute data does not match the previous attribute data. The performing module receives and processes the monitoring message sent by the monitoring device, receives the classified attribute data from the parsing module, and sends the classified attribute data to the monitoring device.

Abstract: A sheet metal processing method for generating punching codes and laser codes includes: reading an engineering drawing, and setting punching parameters; laying out workpieces, and generating punching multi-layout data; selecting and laying out corresponding punching tools for the workpieces and tooling-holes, and generating punching tool layout data; generating the punching codes according to the punching parameters, the punching tool layout data, and the punching multi-layout data, and saving the punching codes in a saving sub-system; retrieving the punching parameters, the punching tool layout data, and the punching multi-layout data of the punching codes, and automatically setting laser parameters and laser multi-layout data; and generating the laser codes according to the laser parameters and the laser multi-layout data. A sheet metal processing system for generating the punching codes and the laser codes is also provided.

Abstract: A computer-aided manufacturing system for sheet-metal punching includes client computers (6), a server (1), and a database (2). The client computers are used for transmitting client drawings to the server, and obtaining machining drawings from the server. The database is used for storing the client drawings, punching tool information, turret information, punching tool layout information, relevant production management information, machining drawings of workpieces, and statements for control of machining processes. The server is connected to a production management system (3) through a network (4), and is used for automatically selecting, mounting and laying out punching tools, optimizing turrets, simulating machining of workpieces, and exporting CNC (computer numerical control) code files, types of machines, machining information on workpieces and materials of the workpieces to the production management system in order to have statements for control of relevant machining processes generated.

Abstract: An apparatus (2) for automatically laying out punching tools on a turret is used in a computer-aided manufacturing system for sheet-metal punching. The system includes a server (1), a database (3), and client computers (7). The apparatus resides in the server, and is used for receiving drawings from the client computers to obtain information on workpieces, selecting punching tools in accordance with sizes and shapes of each type of drawing entity of the workpieces and in accordance with materials of the workpieces and machining allowances set by users, selecting a corresponding tool station on the turret for each of the selected punching tools in accordance with a type of the turret and specifications of the selected punching tool, mounting each punching tool on the corresponding tool station, selecting an optimum manufacturing path for each punching tool, and recording punching tool layout information. A related method is also provided.

Abstract: A computer-aided manufacturing system for sheet-metal punching includes client computers (6), a server (1), and a database (2). The client computers are used for transmitting client drawings to the server, and obtaining machining drawings from the server. The database is used for storing the client drawings, punching tool information, turret information, punching tool layout information, relevant production management information, machining drawings of workpieces, and statements for control of machining processes. The server is connected to a production management system (3) through a network (4), and is used for automatically selecting, mounting and laying out punching tools, optimizing turrets, simulating machining of workpieces, and exporting CNC (computer numerical control) code files, types of machines, machining information on workpieces and materials of the workpieces to the production management system in order to have statements for control of relevant machining processes generated.

Abstract: A computer numerical control (CNC) code-simulating system includes a number of client computers (6), a server (1), and a database (2). The database stores all information used and generated by the system. The client computers provide user interfaces enabling users to timely view information on machining of workpieces. The server is connected to a production management system (5), and is used for: obtaining turret information and machining paths of tools from the database; generating CNC code files according to the turret information and the machining paths of tools; constructing figurations of the tools according to parameters of the tools recorded in the CNC code files; simulating machining of the workpieces according to the figurations, the machining paths and of the tools and the turret information; and exporting relevant production management information to the production management system to generate statements for controlling of machining processes. A related method is also disclosed.