46results about How to "Reduce the number of jumps" patented technology

The invention relates to a record carrier for storing a digital work (DW). The record carrier (10) comprises access information (KLT) for accessing the digital work and a secondary path (HC) in which is stored secondary path information (KLK) for encrypting, decrypting or verifying said access information (KLT) . In order to avoid, prevent or impede tampering with the access information, the auxiliary channel (HC) is stored on the record carrier at substantially the same physical location as the access information (KLT). In a preferred embodiment, when the access information (KLT) changes, the auxiliary path information (KLK) changes accordingly. This enables a record carrier that is resistant to replay cryptographic attacks. The invention also relates to a method for recording a digital work on a record carrier, a recording device and a reading device.

The invention discloses a multi-channel large data item broadcast scheduling method based on a double-layer scheduling strategy. The method includes three processes including large data item subpackaging, high-level data item channel allocating and low-level single channel data item allocating. In the initial stage, a server side judges whether large data items are included according to channel capacity of available channels and the data length of all required data items. If the large data items are included, a pre-subpackaging mechanism needs to be carried out and subpackaging is reasonably carried out. A high-level data item channel allocating algorithm is adopted, and the algorithm guarantees optimal channel allocation; meanwhile, the algorithm is optimized, and accordingly the situation that the channels skip many times when mobile subscribers obtain multiple data items is avoided, and average access time is reduced. In actual application, a feedback mechanism can be introduced for a low-layer single channel data item scheduling strategy, when the subscribers of mobile terminals receive data, the server side is fed back, if certain data are not required, the data can be removed in the next pushing cycle, and the average access time is greatly reduced.

The invention relates to the technical field of train fault diagnosis, and discloses a remote diagnosis device for train operation faults, which includes a housing, a horizontal plate and a sensor group fixed on the horizontal plate, a signal processing and transmission device, a central processing system, a data input and The output interface device and the vehicle image acquisition device, the upper end of the housing is fixedly connected with two fixed blocks, and the opposite sides of the two fixed blocks are horizontally fixedly connected with a rectangular rod, and the rod wall of the rectangular rod is provided with a connecting mechanism. The upper end of the casing is fixedly connected with a horizontal tube, and a buffer mechanism is arranged in the horizontal tube, and the buffer mechanism is connected with the connection mechanism on the two rectangular rods, and the lower end of the housing is provided with an opening matching the horizontal plate. The remote diagnosis device for train operation faults can facilitate the maintenance of the audio-visual detection system and the acquisition of data in the audio-visual detection system, and can effectively reduce the influence of external factors on the audio-visual detection system during use.