Abstract: The invention relates to a gripper device for a robot gripper, wherein the gripper device comprises a mechanical actuation with at least two contact elements guided linearly and in parallel in a direction of actuation, at least one mechanically activatable and/or deactivatable functional portion for objects to be gripped, and a transmission with at least two levers for converting a mechanical actuation power, and wherein the at least two contact elements on the one hand and the at least two levers on the other hand are each articulated to each other with a degree of freedom f=2.

Abstract: Conversion of text-based images to vector graphics (VG) is disclosed. The text-based images may include images of equations, custom typefaces, or other types of text that may not be included in a font selection of an optical character recognition (OCR) device or an application stored on a viewing device. A textual image may be converted from a raster graphics (RG) image to a VG image, which may enable resizing and alignment of the VG image with body text. In some aspects, the server may determine a body size of a reference character in the VG image. The server may determine a baseline of the VG image that may be used to align the image with the body text.

Abstract: Text content embedded with multimedia content is provided from a content provider to a client device. The multimedia content may be provided to the client device separate from the text content. In particular, multimedia content metadata indicating a storage location of the multimedia content may be provided to the client device after the text content. The client device may request the multimedia content from the content provider based on the multimedia content metadata. The content provider may send the requested multimedia content to the client device after receiving an authenticated version of the multimedia content metadata.

Abstract: A method for providing table-of-contents extensions for items displayed on an electronic device may include displaying contents of the item other than a table of contents for the item. The method may also include receiving user selection of a navigation option while the contents of the item are being displayed. The navigation option may correspond to a part of the item that is listed in the table of contents for the item. The method may also include navigating to the part of the item corresponding to the navigation option in response to the user's selection of the navigation option.

Abstract: A digital media item, such as an electronic book (eBook), may include testing content. The testing content may include questions about the content of the digital media item. When is user is viewing the digital media item on an electronic device, such as an eBook reader, the user may be allowed to select whether the testing content is displayed. The user may also be allowed to select a particular mode of testing, such as automatic testing, selective testing, etc. If the user chooses to display the testing content, the user may also be allowed to provide answers to the testing questions.

Abstract: Text content embedded with multimedia content is provided from a content provider to a client device. The multimedia content may be provided to the client device separate from the text content. In particular, multimedia content metadata indicating a storage location of the multimedia content may be provided to the client device after the text content. The client device may request the multimedia content from the content provider based on the multimedia content metadata. The content provider may send the requested multimedia content to the client device after receiving an authenticated version of the multimedia content metadata.

Abstract: The invention concerns a disk-changing unit comprising a tower housing (1) in which is fitted at least one interchangeable disk magazine (13), at least one disk drive (14), if necessary a disk-loading/ejecting drawer (12), a transporting device (17) for moving a disk between the disk magazine (13), the disk drive (14) and if necessary the disk-loading/ejecting drawer (12), an operating device (6) and a computer-controlled control unit (9). To be able to assemble the disk-changing unit individually with the disk magazine (13), the disk drive (14) and if necessary the disk-loading/ejecting drawer (12), the disk magazine (13), the disk drive (14) and the disk-loading/ejecting drawer (12) have the same external dimensions and are modulatively fitted next to each other by being pushed in or pulled out of corresponding recesses (10) and can thus be interchanged, replaced an/or added to.