Abstract: Methods, systems, computer-readable media, and apparatuses for providing policy-based copyright enforcement of media content items streamed to client devices are described. Various aspects discussed herein relate to managing content access rights in an adaptive bitrate environment (e.g., where an asset may be encoded and delivered at multiple different bitrates). The system discussed herein permits differentiated access to the same video, or portions of the same video, where any DRM-type client may read a manifest file including content verification data, which may be video authentication information that is specific to the video. Additional aspects discussed herein provide DRM metadata specific to each frame of a multi-bitrate video to enable the client device to verify the multi-bitrate video on a frame-by-frame basis.

Abstract: Methods and systems related to authoring and acquiring digital rights management (DRM) licenses are disclosed. For example, a computing device may generate or author a digital rights management license for a content asset that includes one or more usage restriction rules. A usage restriction may limit the maximum display resolution for a content asset. Another device may then receive the license and process the one or more usage restrictions prior to presentation of the content asset to a user.

Abstract: Systems and methods can comprise receiving an authentication request according to a first security protocol from a user device. Responsive to a determination that the authentication request is trustworthy according to the first security protocol, a device identifier and information related to a shared key are transmitted to the user device. A content request to access content secured according to a second security protocol is received from the user device. The content request can comprise the device identifier and can be encrypted using a shared key derived from the information related to the shared key. The content request can be decrypted using the shared key, and authenticated based on the device identifier.

Abstract: A columnar light emitting device is provided. The columnar light emitting device includes an upper transparent electrode layer, a lower transparent electrode layer disposed to be separated from the upper transparent electrode layer, a columnar light emitting structure pattern-formed between the upper transparent electrode layer and the lower transparent electrode layer, a fluorescent part formed between a plurality of the columnar light emitting structures, a P-type electrode pad formed on the upper transparent electrode layer, and an N-type electrode pad formed under the lower transparent electrode layer. The columnar light emitting structure includes a U-GaN layer, an N-type semiconductor layer, an emission layer, and a P-type semiconductor layer.

Abstract: A columnar light emitting device is provided. The columnar light emitting device includes an upper transparent electrode layer, a lower transparent electrode layer disposed to be separated from the upper transparent electrode layer, a columnar light emitting structure pattern-formed between the upper transparent electrode layer and the lower transparent electrode layer, a fluorescent part formed between a plurality of the columnar light emitting structures, a P-type electrode pad formed on the upper transparent electrode layer, and an N-type electrode pad formed under the lower transparent electrode layer. The columnar light emitting structure includes a U-GaN layer, an N-type semiconductor layer, an emission layer, and a P-type semiconductor layer.

Abstract: Systems and methods are described that relate to authentication and/or binding of multiple devices with varying security profiles. In one aspect, a first device with a higher security profile may vouch for the authenticity of a second device with a lower security profile when the second device requests access for content from a content provider. The vouching process may be implemented by allowing the first device to overlay its digital signature on a registration request that has been signed and transmitted by the second device. The second device with the lower security profile may access content from the content provider or source for a predetermined time period, even when the second device does not access content through the first device.

Abstract: Systems and methods are described that relate to authentication and/or binding of multiple devices with varying security profiles. In one aspect, a first device with a higher security profile may vouch for the authenticity of a second device with a lower security profile when the second device requests access for content from a content provider. The vouching process may be implemented by allowing the first device to overlay its digital signature on a registration request that has been signed and transmitted by the second device. The second device with the lower security profile may access content from the content provider or source for a predetermined time period, even when the second device does not access content through the first device.

Abstract: A multi-hierarchical key system is provided such that users receive timely key renewals when required so that access to authorized content is not disrupted. Timely renewals of keys may occur continuously for various services while minimizing network traffic. The multi-hierarchical key system may be used in an adaptive streaming environment.

Abstract: Systems and methods are described that relate to authentication and/or binding of multiple devices with varying security profiles. In one aspect, a first device with a higher security profile may vouch for the authenticity of a second device with a lower security profile when the second device requests access for content from a content provider. The vouching process may be implemented by allowing the first device to overlay its digital signature on a registration request that has been signed and transmitted by the second device. The second device with the lower security profile may access content from the content provider or source for a predetermined time period, even when the second device does not access content through the first device.

Abstract: A disk cartridge including a lower case member in which a space portion to receive an optical disk is formed; an upper case member, joined to the lower case member, an opening portion to allow a reading/recording device to obtain access to the optical disk; a multi-shutter member, including shutters, installed at the lower case member to be able to slide, and to allow the opening portion to be exposed to the outside when the multiple-shutter member is moved in a direction of the insertion direction of the disk cartridge into a disk drive, such that the shutters overlap each other; and a locking member, installed at the lower case member, to fix the multiple-shutter member to the lower case member so that the multiple-shutter member cannot move arbitrarily.

Abstract: An apparatus and a method for taking a panoramic photograph are provided. While a lens of the apparatus is rotated, an angular velocity sensor such as a gyroscope outputs an angular velocity and calculates therefrom a rotation angle of the lens. Accordingly, a user can capture sequential image segments for the panoramic photograph at suitable rotation angles. Since unintended rotations due to a user's hand trembling as well as user's intended rotations can be detected, it may be easy to align overlapped portions of adjacent images and thereby to obtain suitable images for panoramic photograph combination. Also, a user can be informed of a capturable section and a rotating direction by using the calculated angular velocity, so the apparatus may promote a user's convenience and without the need for a burdensome tripod.

Abstract: A disc cartridge and a disc drive apparatus. The disc cartridge includes an upper case and a lower case which form an internal space to accommodate a disc, and a pair of elastic protrusions formed at both sidewalls of the lower cases, which are elastically biased toward the internal space so that ends of the elastic protrusions support the disc. Surfaces are formed at the ends to slope toward the internal space so that the disc is located in an upper portion of the internal space and the pair of elastic protrusions supports the disc. The disc descends on the surfaces when the pair of elastic protrusions are opened and the disc is then located in a lower portion of the internal space.

Abstract: A cool air supply duct of a refrigerator includes a vertical duct unit installed in a freezing chamber or a refrigerating chamber of the refrigerator so that the length of the vertical duct unit can be adjusted in the vertical direction; and horizontal duct units installed on the vertical duct unit so that the length of the horizontal duct unit can be adjusted in the horizontal direction and provided with cool air discharge holes formed therethrough for discharging cool air. Since the cool air discharge holes are changed to positions desired by a user, the cool air supply duct cools a designated space of the freezing chamber or the refrigerating chamber of the refrigerator to a temperature lower or higher than those of other spaces, thus increasing convenience in using the cool air supply duct and improving the cooling efficiency of the cool air supply duct.

Abstract: A disk cartridge which includes a case having an upper wall, a lower wall, and a sidewall, which form an inner receiving space in which a disk is inserted, an opening formed in at least one of the upper wall and lower wall of the case to allow a recording/reproducing unit of a disk drive to access the disk therethrough, and an inlet hole formed at the sidewall of the case to allow the disk to be inserted into and withdrawn from the case therethrough.

Abstract: A pressure sensor system involves a semi-conductive diaphragm electrode overlying a cavity in a semiconductor chip, with the center of the diaphragm secured to a mesa extending upwardly from the cavity. A second electrode is implemented by a heavily doped raised ring between the mesa and the periphery of the chip at the ring of maximum deflection of the diaphragm. The raised ring electrode is heavily doped with one polarity, with light doping near the base of the raised area, and the remainder of the cavity is heavily doped with the opposite polarity. The plot of Linearity Error versus width of the ring electrode, has a minimum, and the width of the ring electrode and related constructional features are selected to conform to the minimum point of the linearity function. The reference capacitor is arcuate in configuration and extends part way around and in immediate proximity to the sensor diaphragm.

Abstract: An optical pickup apparatus having laser light sources emit a first light beam having a relatively shorter wavelength for a DVD and a second light beam having a longer wavelength for a CD-R, an objective lens having a focal length of an information recording surface in the DVD, an optical path control unit controls the light beams so that the light beam emitted from one of the laser light sources is directed to the objective lens and the light output from the objective lens is directed to the optical detection unit, and a phase shift unit between the optical path control unit and the objective lens and which shifts a phase of the second light to reduce the size of a beam spot which is formed the information recording surface in the CD-R.

Abstract: An optical pickup apparatus having laser light sources emit a first light beam having a relatively shorter wavelength for a DVD and a second light beam having a longer wavelength for a CD-R, an objective lens having a focal length of an information recording surface in the DVD, an optical path control unit controls the light beams so that the light beam emitted from one of the laser light sources is directed to the objective lens and the light output from the objective lens is directed to the optical detection unit, and a phase shift unit between the optical path control unit and the objective lens and which shifts a phase of the second light to reduce the size of a beam spot which is formed the information recording surface in the CD-R.

Abstract: A pressure sensor system involves a semi-conductive diaphragm electrode overlying a cavity in a semiconductor chip, with the center of the diaphragm secured to a mesa extending upwardly from the cavity. A second electrode is implemented by a heavily doped raised ring between the mesa and the periphery of the chip at the ring of maximum deflection of the diaphragm. The raised ring electrode is heavily doped with one polarity, with light doping near the base of the raised area, and the remainder of the cavity is heavily doped with the opposite polarity. The plot of Linearity Error versus width of the ring electrode, has a minimum, and the width of the ring electrode and related constructional features are selected to conform to the minimum point of the linearity function. The reference capacitor is arcuate in configuration and extends part way around and in immediate proximity to the sensor diaphragm.

Abstract: In a slim type optical disc drive, an optical pickup unit and an optical pickup transport assembly are installed on a main base disposed in a housing having a lower case and an upper case. A spindle motor is mounted on a tray so as to slide in and out of the housing. A spindle motor printed circuit board is mounted on the tray, and a main printed circuit board is fixed to the lower case. A flexible printed circuit connects the spindle motor and main printed circuits boards. The tray includes a table which supports the spindle motor, and side frame bars located at sides of the tray and spaced apart from the table. A pair of guide ribs are arranged in the housing to guide the movement of the table. In the slim type optical disc drive, only the spindle motor is disposed on the tray.

Abstract: A disk cartridge which includes a case having an upper wall, a lower wall, and a sidewall, which form an inner receiving space in which a disk is inserted, an opening formed in at least one of the upper wall and lower wall of the case to allow a recording/reproducing unit of a disk drive to access the disk therethrough, and an inlet hole formed at the sidewall of the case to allow the disk to be inserted into and withdrawn from the case therethrough.