78 results about "DVD-RW" patented technology

The present invention provides for a compact media player capable of playing a variety of audio and visual data embedded in a variety of media data formats, including but not limited to CD, CD-R, CD-RW, VCD, DVD, DVD-R, DVD-RW, DVD+R, DVD+RW, and SD memory card. The player can also be used to receive TV broadcast signals and AM, FM and/or XM radio broadcast signals. In one embodiment, the compact media player can also perform computing functions. Also, the player of the present invention can be used as a means to transmit and receive media data to other media devices through A/V, USB and/or wireless interfaces. The player can also record incoming media data sources through those interfaces.

An optical disk drive for optimizing laser power to be used at the time of recording operation. In a DVD-R drive and a DVD-RW drive, a controller performs OPC to set recording power and records RMD serving as recording management data in an RMA serving as a recording management area. The RMD are verified. When the RMD can be read, the number of PI errors in the RMD is detected. If the number of PI errors is equal to or less than an allowable value, data are recorded in a data area at that recording power. If the number of PI errors exceeds the allowable value, OPC is again performed, to thereby reset the recording power.

A recording medium storing a write protection information, and a write protection method for protecting data recorded on a recordable and/or rewritable disc from unwanted overwriting or erasing. In order for write protection of a disc in a bare state that is usually used in a cartridge having a recognition switch for write-protection, such as a DVD-RAM, write protection information is recorded in a Lead-in area, a Lead-out area or a recording information area other than a user data area of the disc, and the data is protected from unwanted overwriting or erasing using the write protection information. Also, even though the write protection information stored on a disc does not match the state of a recognition switch of a case for write-protection, the data can be prevented from unwanted overwriting or erasing. Thus, the write protection can be ensured when a recordable and/or rewritable recording medium, such as DVD-RAM, DVD-R and DVD-RW, is used in a bare state.

The inventive stand alone mechanism converts video data from an original format such as VHS or digital video to an optical media such as a CD-RW or DVD-RW and prepare it for use in non-linear computer applications such as video editing and production in a single step conversion process. The inventive mechanism will also insert index markers into the video data. The markers could be time based or scene transition based.

A method for performing optimal recording power calibration (OPC) on a recording medium, such as a DVD-RW, is characterized by flagging the address of the last test data. The method enables a recording position of the last test data to be quickly retrieved by recording position information of a power calibration area, in which the last test data is recorded, and indication information (such as a flag bit) indicating the recording position information is the last test data, in a specific area of the recording medium, such as the second field (field 1) of the format 1 RMD (recording management data). Such a method shortens the processing time prior to the OPC, and does not require the recorder to employ registers to determine the address of the last test data.

An optical recording medium on which data may be stored seamlessly, and a method of processing a defective area in the optical recording medium are provided. In a recording medium in which basic recording units are seamlessly recorded, such as a digital versatile disc rewritable (DVD-RW) on which data can be repeatedly recorded and reproduced multiple times, defective areas occurring before or during use are detected, and a list of the defective areas is recorded in a predetermined area of the recording medium. Thereafter, while user data is being recorded, instead of slipping (lowering optical power in) the defective areas registered in the defective area list, dummy data is recorded in the defective areas, basic unit data from an area preceding or succeeding a defective area is repeatedly recorded in the defective area, or a predetermined data pattern is recorded in the defective area. This suppresses linking caused by the interruption of data recording, thereby ensuring a maximum user area.

Multilayer Optical Disc and Method and Apparatus for making same are proposed The technology provides increasing the number of layers in reflective optical disks of any format. The technology allows producing of multilayer optical reflective discs of any format (CD, ROM, DVD ROM, Blue Ray, HD-DVD, DVD-R, DVD-RW, etc.) using existing CD/DVD production lines with reasonable upgrading.

Multi-drive optical disk apparatus and a method and a label for easily confirming the respective performance characteristics for the different kinds of optical disks are provided. The respective performances, such as a data transfer rate are indicated by multiple-fold speed forms, respectively. The performance indication label is affixed on one surface of the optical disk drive. The performance indication label is constructed by arranging an indication for a data reading performance from a CD-ROM disk and a DVD-ROM disk, an indication for a data writing performance to a CD-RW disk, a DVD-RAM disk, a DVD-RW disk, a DVD-R disk, and a CD-R disk, and an indication for a data writing and reading performances to and from a DVD-RAM disk in a hypothetical circle.

In a ROW-based DVD-RW, a DVD video file is managed according to provisional VMGI (TMP_VMGI) and an extension file other than the DVD video file, such as a JPEG file or the like is managed according to intermediate management information (TMP_EXTI), and temporary space bitmap (TMP_SBM) used in UDF and the like is added to provisional VMGI (TMP_VMGI to record a combination of the DVD video file and extension file such as JPEG file and manage the temporary space. Thereby, the temporary space can be known from TMP_SBM, and even when the extension file has been deleted, the DVD-RW is made interchangeable with a read-only optical disk through finalization. Thus, the present invention allows to record a file of still pictures other than moving pictures and also pad information in a temporary space resulted from deletion of any recorded area.

The CD title protecting method includes the following two steps: detecting and confirming the recognition information for showing CD title protection during executing the data record operation; and either recording the data on the title(s) the CD records or recording the data to the area without title recorded according to the confirmed recognition information. The present invention is valuable in that the title protecting recognition information may be appended onto recordable CDí»s, such as DVD and DVD-RW. In addition, when the new data is recorded, the available recognition information is referred to avoid the accident deletion of the recorded title on the CD and the loss of important data recorded on the CD.

The present invention aims at providing a recording method for making a request for selecting whether or not to perform finalizing processing on a disc inserted in a DVD-R or a DVD-RW recording device, capable of reducing unnecessary operations and effectively using the recording capacity of the DVD-R or the DVD-RW. The DVD-R or the DVD-RW recording device includes user information input/output means including recording means for recording data in the disc and display means and central processing means for processing information input by the user or recorded information in the inserted disc, inputs and sets a reference based on which a finalizing processing selection is displayed, detects the presence/absence of a finalizing record of the inserted disc and an amount of remaining capacity therein, decides and displays whether the detected amounts meet the reference or not, performs finalizing processing as required and performs processing of unloading the disc. The display contents include an amount of remaining capacity of the disc and amount of remaining capacity according to the recording mode.

The present invention provides an writing/reading system of HD stream in a digital broadcast product, by which HD transport stream is wrote/read in/from a disc medium. The present invention buffers the HD transport stream in HDD to record in a DVD-RW medium. And, the present invention reads the transport stream recorded in the DVD medium via a decoder, thereby storing the HD transport stream in the DVD medium.

A method and apparatus for controlling an audio recording level. The apparatus variably controls a recording level of audio data recorded on a rewritable recording medium such as a DVD-RW disk on the basis of either a firstly-recorded audio level average value in song units or a previously-recorded audio level average value in song units, and then records the resultant data on the recording medium. In this way, the apparatus records the audio data to be recorded on a single recording medium at a prescribed audio recoding level within the appropriate range, resulting in even playback audio levels regardless of the type and/or format of audio data.

The address information of DVD-R or DVD-RW discs should be identified more accurately. Therefore, the detector is implemented with a sample/hold device for storing a reference value to be used for a sampling window. An optional integrator is used for comparing the integrated signal with a reference value to decide on the presence of a land pre-pit. The timing for controlling both the sample/hold device and the integrator is derived from a phase locked loop that is locked to the incoming groove wobble signal (TWin) by performing a clock multiplication with a predetermined factor. Advantageously, no band pass filter has to be included, which would need to be tuned according to the variations of the disc speed. Furthermore, the proposed land pre-pit detector is less affected by variations of the input amplitude, as no limiter is used.

An information recording medium such as DVD-R, DVD-RW or the like is provided with a user information recording area in which user information can be recorded. The user information recording area has pre-recorded areas for preventing recording/reproduction of the user information, in a plurality of portions. The user information recording area is divided by the pre-recorded areas into a plurality of partial recording areas including a partial recording area smaller than a unit area in which record information of a read-only recording medium is recorded.

There is described a method of partitioning data on a data carrier arranged to be a write-once item. The method comprises a first step of writing video data content to a first region of the carrier, a second step of writing other data content to a second region of the carrier, and a third step writing substantially mutually independent first and second directories for recording data layouts of their corresponding first and second regions respectively, for example during finalisation. Such partitioning of the video data content and other data content, for example still picture data, is of benefit in rendering the data carrier, for example implemented as a DVD R data carrier, more compatible with other data carrier formats, for example DVD RW.

The invention discloses a DVD-RW that could realize radio video frequency signal wireless transferring. It includes inner core electric circuit and UWB module. The UWB module is made up of receiver, base band processor, and medium access controller. Receiver connects to antenna, and the system bus of DVD-RW inner core electric circuit connects to the medium access controller in UWB module. The invention uses UWB method to take wireless transmitting for audio video frequency signal. It could realize single DVD play on plural display devices.

An information recording medium such as DVD-R, DVD-RW or the like is provided with: an user information recording area in which user information can be recorded. The user information recording area has a pre-recorded area for preventing recording/reproduction of the user information, in an edge portion corresponding to a recording area portion in which reproduction control information for a read-only recording medium such as DVD-Video is recorded.