摘要:
A copy prevention method and apparatus of a digital magnetic recording/reproducing system performs the copy prevention function by encoding to insert a marker involving copy prevention function information and executing the function and allows a program supplier to realize a desired copy prevention function of various patterns, in which the marker formed by a control word for scrambling audio and video bit straps and copy prevention information for preventing an illegal copy is encrypted by an encoded key to be multiplexed with the audio and video bit strips scrambled by the control word. The marker transmitted is detected from the bit strips to be decrypted and analyzed by the encoded key to determine whether the copy is permitted or not, so that the detected marker is updated to be recorded on a video tape and the control word is produced from the marker to perform the descrambling to supply the result to a monitor to be displayed. Thus, the program supplier selects the copy prevention function, and a separate format converting apparatus is not required since a field defined within a GA format is utilized while an existing DVCR is not need to be changed for performing the copy prevention function as the data amount to be recorded is not increased. A method and apparatus for recording digital data are discussed. According to an embodiment, the invention is directed to a method of recording digital data using a data recording/reproducing apparatus, the data recording/reproducing apparatus including a scrambler, the method comprising: scrambling, by the scrambler, at least one data units included in the digital data based on control data, the control data being used for controlling a parameter of a scrambling/descrambling operation, wherein one or more succeeding data units included in the digital data are scrambled based on the same control data; and recording, by the data recording/reproducing apparatus, the at least one scrambled data unit and the control data in a portable data storage.
摘要:
A thin film transistor array substrate includes according to an embodiment a plurality of gate lines and a plurality of data lines on a substrate, to define pixel regions crossing each other; thin film transistors each formed at the intersection of the gate lines and the data lines, and including a gate electrode, a source electrode and a drain electrode; common lines, each including a first pattern formed across the data lines, a second pattern formed adjacent to the data lines on both sides in the pixel region and parallel to the data lines, and a third pattern formed adjacent to the gate lines to connect the second pattern disposed on both the sides in the associated one of the pixel regions, and passing below the drain electrode of the thin film transistors; and pixel electrodes formed in the pixel regions.
摘要:
Provided is an apparatus and a method of restricting an access to an application module of a mobile wireless device. The apparatus for restricting an access to an application module of a mobile wireless device according to an exemplary embodiment of the present invention includes an access restriction unit for receiving a request for an access to an application module from a basic module, and for restricting the access of the basic module to the application module when a restriction on the access is required. Further included is an access restriction determination unit for determining whether the restriction on the access of the basic module to the application module according to an access environment is required. Also included is an access environment determination unit for monitoring the access environment of the basic module to the application module and for providing the access restriction determination unit with a result of monitoring the access environment.
摘要:
A radio frequency (RF) semiconductor device includes a semiconductor substrate, a resistor film formed at one area of the semiconductor substrate, a first metal layer formed on the semiconductor substrate, a dielectric layer formed at least on the lower electrode film, a second metal layer formed on the dielectric layer, a first insulating layer having a first pad via connected with the first metal layer, a capacitor via connected with the second metal layer, and an inductor via connected with the first or second metal layer. a third metal layer includes filling parts that fill the capacitor via and the inductor via, respectively, and a second circuit line. A second insulating layer is formed on the first insulating layer to have a second pad via connected with the first pad via. A bonding pad is formed at the first and second pad vias.
摘要:
A copy prevention method and apparatus for a digital video system is disclosed including the steps of: (a) adding a header area of a header start code and key field to a reproduced bit stream: (b) decrypting and transmitting the bit stream to which the header area is added: (c) detecting a key field of the decrypted and transmitted bit stream and detecting copy prevention information; and (d) encrypting the bit stream according to information detected from stop (c) and recording it an tape. A copy protection method including receiving encrypted digital data to be recorded, key information which is required to decrypt the encrypted digital data, and first copy control information which indicates a copy permission status of the encrypted digital data; and recording the encrypted digital data, the key information, and second copy control information on a digital recording medium, based on at least a status of the first copy control information.
摘要:
A thin film transistor array substrate and a method for manufacturing the same are disclosed. The thin film transistor array substrate includes a plurality of gate lines and a plurality of data lines on a substrate, to define pixel regions crossing each other, thin film transistors, each formed at the intersection of the gate lines and the data lines, and including a gate electrode, a source electrode and a drain electrode, common lines, each including a first pattern formed across the data lines, a second pattern formed adjacent to the data lines on both sides in the pixel region and parallel to the data lines, and a third pattern formed adjacent to the gate lines to connect the second pattern disposed on both the sides in the associated one of the pixel regions, and passing below the drain electrode of the thin film transistors and pixel electrodes formed in the pixel regions.
摘要:
A format converting apparatus for a mutual data exchange between an IEEE 1394 serial bus and a VSB remodulator is disclosed. The present invention allows a conversion from a format of the IEEE 1394 to the VSB remodulator and also a conversion from a format of the VSB remodulator to the IEEE 1394. Therefore, digital equipment having both the IEEE 1394 and the VSB remodulator can be utilized without problem.
摘要:
A copy prevention method and apparatus for a digital video system is disclosed including the steps of: (a) adding a header area of a header start code and key field to a reproduced bit stream: (b) decrypting and transmitting the bit stream to which the header area is added: (c) detecting a key field of the decrypted and transmitted bit stream and detecting copy prevention information; and (d) encrypting the bit stream according to information detected from stop (c) and recording it an tape.
摘要:
A reproducible number limiting apparatus for a magnetic recording medium using a reproducible number limiting algorithm is disclosed including: scrambling means for scrambling an input bit stream using a scrambling key; encryption means for encrypting the scrambling key used in the scrambling means' scrambling and additional information, and outputting a ciphertext; a key storage for storing an encryption key required in encryption; recording/reproducing means for recording or reproducing the output of the scrambling means and encryption means; decryption means for updating the additional information for every playback from the ciphertext using an encryption key, and destroying the scrambling key when the additional information satisfies a specific condition; and descrambling means for descrambling a reproduced bit stream using the scrambling key from the decryption means.
摘要:
Provided are a node device of a beacon-enabled Wireless Personal Area Network (WPAN) managing a channel resource and a method thereof. The node device may generate a pseudo random binary sequence (PRBS) and generate a hopping sequence based on a number of available channels using the PRBS, thereby generating a hopping sequence having a characteristic of pseudo randomness and selecting a channel to be hopped, using the hopping sequence.