Abstract: A method and apparatus for encoding three-dimensional (“3D”) video includes receiving a left-eye interlaced frame and a corresponding right-eye interlaced frame of a 3D video. An amount of interlacing exhibited by at least one of the left-eye interlaced frame and the corresponding right-eye interlaced frame is determined. A frame packing format to be used for packing the left-eye interlaced frame and the corresponding right-eye interlaced frame into a 3D frame is selected based on the amount of interlacing that is determined. The left-eye interlaced frame and the corresponding right-eye interlaced frame are formatted into a 3D frame using the selected frame packing format. Illustrative frame packing formats that may be employed include a side-by-side format and a top-and-bottom format.

Abstract: Systems, apparatus and methods can operate to generate frame aligned digital video streams encoded at different bitrates from a common digital video stream. To provide uninterrupted playback of video content when a device switches from one stream encoded at one bit rate to the same digital video stream encoded at another bitrate, the video frames of the digital video streams can be aligned. To provide for proper frame alignment between fragments representing the same frame of a digital video stream encoded at different bitrates, video encoding device(s) can mark decoded digital pictures for subsequent encoding at different bit rates when the division of a program reference clock value by the fragment period approaches an integer value.

Abstract: A method and apparatus for encoding three-dimensional (“3D”) video includes receiving a left-eye interlaced frame and a corresponding right-eye interlaced frame of a 3D video. An amount of interlacing exhibited by at least one of the left-eye interlaced frame and the corresponding right-eye interlaced frame is determined. A frame packing format to be used for packing the left-eye interlaced frame and the corresponding right-eye interlaced frame into a 3D frame is selected based on the amount of interlacing that is determined. The left-eye interlaced frame and the corresponding right-eye interlaced frame are formatted into a 3D frame using the selected frame packing format. Illustrative frame packing formats that may be employed include a side-by-side format and a top-and-bottom format.

Abstract: Provided is a mobile counterweight equipment of crawler crane, which includes a main platform, wherein the said mobile counterweight equipment further includes a pair of sliding rails on two sides of the main platform, a slider and counterweight equipment on the sliding rails; the counterweight equipment is connected to the slider, the slider sliding back and forth on the sliding rails. Accordingly, total weight of the counterweight is greatly reduced, the structure is simplified and it is easy to operate and to maintain.

Abstract: The present invention discloses a mobile counterweight equipment of crawler crane, which includes a main platform, wherein the said mobile counterweight equipment further includes a pair of sliding rails on two sides of the main platform, slider means and counterweight equipment on the said sliding rails; the said counterweight equipment is connected to the said slider means, the said slider means slides back and forth on the said sliding rails. The beneficial effects of the present invention are: the total weight of the counterweight is greatly reduced, the structure is simplified and it is easy to operate and to maintain.

Abstract: A quick-connect system is disclosed for sectional boom members for cranes and the like. The sectional boom members comprise chords for carrying compressive loads, each chord terminating in an end configured to abut against an end of a chord of an adjacent sectional boom member. The quick-connect system comprises at least one easily alignable connector secured to the ends of at least one of the chords, the connector comprising a compressive load bearing surface intersected by the intersection of the vertical and horizontal neutral axes of the chord to which the connector is attached.