330results about How to "Improve recording effect" patented technology

A magnetic head having at least a main pole having a profile on a magnetic head air bearing surface composed of a first portion having a length in a cross-track direction which continuously increases from a leading edge to a trailing edge, and a second portion located on the side of the trailing edge of the first portion. A length of the second portion in the cross-track direction at the trailing edge is substantially equal to a length in the cross-track direction at the point of contact between the first and second portions. A rate of change in the length of the second portion in the cross-track direction from the leading edge to the trailing edge is different from a rate of increase in the length of the first portion in the cross-track direction.

The invention discloses a handwriting recognition method based on a handwriting coordinate sequence. The method includes acquiring a lot of data of the handwriting coordinate sequence, obtaining a general recognition model, and then training the handwriting coordinate sequence of a user through the recursive neural network to form a recognition model adaptive to the user's handwriting habit. Because the time characteristic of the user's handwriting is recorded, after the training, the recognition model adaptive to the user's handwriting habit is formed, so that the recognition precision is high. According to the invention, the training model calculation speed can be adjusted for the handwriting speed of different users by changing the sampling frequency of a handwriting input device, and the data volume of the handwriting coordinate sequence; and moreover, the recognition can be carried out during the handwriting, and the recognition efficiency is high.

A magnetic powder consisting of substantially spherical or ellipsoidal particles comprising a transition metal which comprises iron and a rear earth element which is mainly present in the outer layer of the magnetic powder particles, and having a particle size of 5 to 200 nm, a coercive force of 80 to 400 kA / m and a saturation magnetization of 10 to 25 uWb / g.

The invention relates to multimedia storage method, system and device. The multimedia storage method comprises the following steps: acquiring a user recording program list and recording document information of the recorded multimedia contents; judging whether to accept or reject the recorded multimedia contents according to the user recording program list and the recording document information, saving necessary recording documents in the recorded multimedia contents according to the result of the judgment, and deleting unnecessary recording documents in the recorded multimedia contents. The user recording program list is used for providing time shifting service or / and review service. The technical scheme can share one recording document in a time shifting and review mode, reduce the IO resources by writing and storing with one media server, double the recording performance of the media server and also reduce the storage space waste of the recorded contents of the time shifting programs.

The volume hologram recording photosensitive composition provided by the present invention contains at least a fluorine-contained photoreactive compound represented by the following formula (1): R1—R3—(CF2)n-R4—R2 wherein R1 and R2 are photoreactive groups which can be bonded to each other by photoreaction, and each of R3 and R4 is independently a single bond or a bivalent hydrocarbon group having 1 to 5 carbon atoms, and n is an integer of 1 or more. This volume hologram recording photosensitive composition is used to form a recording section of a recording medium, and then the section is exposed to light, whereby a bright volume hologram can be obtained.

An embodiment of the invention discloses a video recording method and device and a computer readable storage medium, and belongs to the technical field of multimedia. The method is applied to a terminal comprises at least one camera, and comprises the following steps: determining a selected lyric special effect, and obtaining special effect processing information corresponding to the lyric specialeffect according to a correspondence relation list between lyric special effects and special effect processing information; in the video recording process, playing a selected song, and collecting a video picture by utilizing the camera; carrying out face recognition on the video picture to obtain a face recognition result; and based on the face recognition result, carrying processing on the lyrics playing currently according to the special effect processing information, and displaying the processed special effect lyrics. The method is characterized by obtaining the special effect processing information corresponding to the selected lyric special effect, carrying out face recognition on the collected video picture, and displaying the special effect lyrics obtained after processing according to the special effect processing information, thereby enabling the video picture to be associated with the special effect lyrics, enriching recorded video content and optimizing the video recordingeffect.

A magnetic powder consisting of substantially spherical or ellipsoidal particles comprising a transition metal which comprises iron and a rear earth element which is mainly present in the outer layer of the magnetic powder particles, and having a particle size of 5 to 200 nm, a coercive force of 80 to 400 kA / m and a saturation magnetization of 10 to 25 μWb / g.

A perpendicular recording medium having an underlayer structure that improves the microstructural properties of the recording layer. A spacer layer is intercalated between the lower and upper hcp metal layers. This results in improvements in microstructure of the upper hcp metal layer and the recording magnetic layer, which in turn results in gains in recording media performance. Further, the thickness of the upper hcp metal layer can be reduced, thereby reducing the distance between the recording layer and the soft underlayer, providing further gains in recording media performance.

The invention discloses a screen recording device comprising an acquisition board, a synthesized board, an encoding compression board and a file writing module. The acquisition board comprises a computer video acquisition module, a camera video acquisition module, a computer audio acquisition module and a microphone audio acquisition module. Each acquisition module is realized by independent hardware, and needs not to occupy a CPU (Central Processing unit), so the acquisition frame rate is not limited by the processing speed of the CPU, the dynamic video and the transparent pictures can be captured, and the computer voice and the microphone voice can be recorded simultaneously. In comparison with recording just by software, the recording effect is improved, and the recording efficiency is increased.

Multiple embodiments of the invention are described which include at least two laminated ferromagnetic layers with differing magnetic anisotropy. The independent magnetic layer farther away from the recording head is selected to have a lower magnetic anisotropy to allow magnetic switching of the multiple magnetic layers to occur at approximately the same head write current even though the recording head field is reduced with increased distance from the head. The improved switching yields improved magnetic recording performance. Laminated magnetic media according to the invention can have a single peak in the normalized DC erase noise vs. head write current plot indicating that the magnetic transitions in the non-slave magnetic layers are written at the same head write current. As a result the magnetic pulse width (PW50) is reduced, overwrite (OW) is improved and media signal-to-noise ratio (SoNR) is improved. Alternatively one or both of the laminated ferromagnetic layers can be replaced with an antiferromagnetically (AF) coupled layer structure that has an AFC-master and an AFC-slave layer separated by a spacer layer selected to antiferromagnetically couple the AFC-master and AFC-slave layers.

A perpendicular magnetic write head includes: a magnetic pole; a pair of side shields on both sides, in a write-track width direction, of the magnetic pole with respective side gaps in between; a trailing shield on a trailing side of the magnetic pole and the pair of side shields with a trailing gap in between. Each of the magnetic pole, the side shield, the trailing shield, the side gap, and the trailing gap has an end face exposed on an air bearing surface. The trailing gap has a first regional part and a second regional part. The first regional part separates a trailing edge of the magnetic pole from the trailing shield, and the second regional part separates the pair of side shields from the trailing shield. All or a part of the second regional part has a thickness larger than a thickness of the first regional part.

A perpendicular magnetic recording system uses an exchange-spring type of perpendicular magnetic recording medium. The medium has a recording layer (RL) that includes a lower media layer (ML) and a multilayer exchange-spring layer (ESL) above the ML. The high anisotropy field (high-Hk) lower ML and the multilayer ESL are exchange-coupled across a coupling layer. The multilayer ESL has at least two ESLs separated by a coupling layer, with each of the ESLs having an Hk substantially less than the Hk of the ML. The exchange-spring structure with the multilayer ESL takes advantage of the fact that the write field magnitude and write field gradient vary as a function of distance from the write pole. The thicknesses and Hk values of each of the ESLs can be independently varied to optimize the overall recording performance of the medium.