Abstract: A data processing apparatus includes a recording unit operable to record content including video stream and/or audio stream to a recording medium, and a menu recording unit operable to generate control information for displaying a first menu (“Treasure Menu”) and a second menu (“Pleasure Menu”). The first menu allows selection of content from contents which are selected by the user out of contents stored in the recording medium. The second menu is selectively displayed between the first and second menus and allows selection of content from contents which are not selected by the user. The recording unit records the control information to the recording medium.

Abstract: The present invention provides a semiconductor device having a recess-structured ohmic electrode, in which the resistance is small and variation in the resistance value caused by manufacturing irregularities is small. In the semiconductor device of the present invention, a two-dimensional electron gas layer is formed on the interface between a channel-forming layer and a Schottky layer by electrons supplied from the Schottky layer. The ohmic electrode comprises a plurality of side faces in ohmic contact with the two-dimensional electron gas layer. At least a part of side faces of the ohmic electrodes are non-parallel to a channel width direction. In a preferred embodiment of the present invention, the side faces have a saw tooth form or a comb tooth form. Since the contact area between the ohmic electrode and the two-dimensional electron gas layer is increased, ohmic resistance is reduced.

Abstract: The present invention provides a tone detector that is capable of performing accurate tone signal detection in a short period of time. Specifically, the tone detector according to the present invention includes: a control unit that measures the tone signals using a plurality of channels having a predetermined measuring time interval, which are shifted by a fixed time period, and reads out the tone signals stored in a memory unit for each of the measuring time intervals; detection processing units that determine the characteristic quantity of the tone signals read out by the control unit; and a tone determination unit that identifies the tone signal for each of the plurality of channels based on the characteristic quantity determined in the detection processing units. In this tone detector, the tone signals are measured using a plurality of channels wherein the measuring time interval of each channel is shifted by a fixed time period after which the tone signal is identified.

Abstract: A player reads content data from a continuous area on a storage medium and plays back video and/or audio based on the content data. The continuous area includes a data area, in which the content data is stored, and a non-content-data area, in which the content data is not stored. The player includes: a reading control section for giving an instruction to read the content data of a predefined size from the data area and an instruction to start to play back the video and/or the audio based on the content data that has been read out; a head for reading the content data from the data area in accordance with the instruction to read; and a buffer memory for accumulating the content data that has been read. The reading control section determines the predefined size by the amount of time it takes to skip the non-data area, reads the content data of the predefined size, accumulates the data in the buffer memory, and then gives an instruction to start to play back the content.

Abstract: An AV data recording apparatus and an AV data recording method are provided, in which even in the case of using the UDF file system, seeking can be minimized. The AV data recording method has file management information for managing continuous blocks on a disk as an extent, and dividing the extent into groups so as to manage the extent as a file, wherein a new directory is created on a disk, and a not recorded but allocated extent is kept as a reservation region for recording file management information.

Abstract: 1. A ?-lactam compound of the formula [1]; wherein R1 is a lower alkyl, a lower alkyl substituted by a hydroxy; R2 is a hydrogen, a lower alkyl; X is O, S, NH; m and n are 0 to 4, Y1 is a halogen, cyano, a hydroxy, an amino, a lower alkyloxy, a lower alkylamino, a carboxy, a carbamoyl, a lower alkyl, etc., Y2 is hydrogen, an alkyl, cyano, —C(R3)?NR4 (wherein R3 and R4 are hydrogen, an amino, an alkyl, etc., or R3 and R4 may combine each other together with the nitrogen atom to form a 5- to 7-membered heterocyclic group), or a pharmaceutically acceptable salt thereof, or a non-toxic ester thereof, which has an excellent antibacterial activity against Gram-positive bacteria, especially against MRSA and MRCNS.

Abstract: A data processor records an audio frame corresponding to an audio gap interval at a connection point, as well as the audio playback control information, in a post recording area. The audio is reproduced so as to include the audio frame at the connection point. The audio is also reproduced while being faded in and faded out in accordance with the audio playback control information. As a result, when an MPEG program stream stored on a disk is played back by making a play list with the connection point re-encoded, seamless playback is guaranteed without discontinuing the audio at all.

Abstract: A reproducing apparatus includes a reproducing section picking up any signals compressed in a plurality of different compression methods from a recording medium. The recording medium records the signals compressed in a plurality of different compression methods and record management information denoting association of the signals compressed in a plurality of different compression methods with each other, respectively. A decoding section decodes the signal picked up from said recording medium, and a recording section records reproduction management information including reproduction-interruption information in the reproducing section associated with the record management information onto the recording medium.

Abstract: A data processor includes: a signal input section to which video and audio signals are input; a compressing section for compressing/coding the video and audio signals to generate video and audio data; a stream assembling section, which divides the video and the audio data into a plurality of packets, and makes a plurality of data units, in each of which a video packet representing a fraction of the video data and an audio packet representing a fraction of the audio data are multiplexed together to generate a data stream composed of a plurality of data units; and a writing section for writing the data stream on a storage medium.

Abstract: Each of a first data stream in a first format and a second data stream in a second format is an arrangement of a plurality of data units, each including compressed and encoded video data. In the first and second formats, first and second time ranges are respectively set to define a permissible variation in the video playback duration of the respective data units. The method includes the steps of: receiving a content representing the video; generating the compressed and encoded video data of the content; making the data units out of the video data such that the playback duration of each said data unit falls within both of the first and second time ranges; and recording the first data stream, including the data units, on the storage medium.

Abstract: A recording apparatus is provided that includes a recording section for recording information onto a recording medium, a file system processing section for managing the information as a file using file system information having a directory hierarchy structure capable of being referenced using a path name, a contents management information processing section for managing the directory and the file using contents management information, and an extension information processing section for managing extension information with respect to the directory and the file. The contents management information includes media object management information for referencing the directory and the file using object reference information obtained by converting the path name, and extended object management information for managing the extension information. The directory and the file are associated with the extension information via the object reference information.

Abstract: The data processor of the present invention can play back video and audio synchronously from an optical disk, on which video and audio data are stored in different areas. Each area consists of one or more unit areas. The data processor includes: a playback control section for giving instructions on how to read the video and audio data and how to play back the video and audio based on the read data; a head for reading the data from one of the unit areas after another in accordance with the instructions; and audio and video buffers for retaining the audio and video data read. The playback control section instructs that the audio data be read from a predetermined one of the unit areas to the audio buffer memory, and then instructs that the video data, which is to be played back over first and second periods of time, be read from a number n (where n is an integer equal to or greater than two) of unit areas to the video buffer.

Abstract: A tone transmission part transmits a tone signal. A tone signal detection part detects data representing an echo signal of the tone signal transmitted by the tone transmission part, and detects data representing a predetermined tone signal targeted to be detected. The tone signal detection part also detects data representing tone signals of all of input signals. A tone judgment part excludes the data representing the echo signal from the data representing the tone signals of all of the input signals so as to judge a detection of the predetermined tone signal.

Abstract: A data processing apparatus includes an encoder and a processor. The encoder generates reproduction units each including I/B/P picture data, and information indicating reproduction time to reproduce each of the pictures to generate a data stream. The processor generates, in accordance with the type of the recording medium, one of basic picture information and reproduction unit information, and time length information. Such information is stored in one or more tables of the respective units as management information. The basic picture information defines a correspondence between a reproduction time to reproduce the first I picture which is recorded at the top of the each unit, and a recording position of the I picture. The reproduction unit information defines a correspondence between a reproduction time length of each unit and a recording position of the I picture. The time length information relates to the reproduction time length on pictures in each unit.

Abstract: A tone transmission part transmits a tone signal. A tone signal detection part detects data representing an echo signal of the tone signal transmitted by the tone transmission part, and detects data representing a predetermined tone signal targeted to be detected. The tone signal detection part also detects data representing tone signals of all of input signals. A tone judgment part excludes the data representing the echo signal from the data representing the tone signals of all of the input signals so as to judge a detection of the predetermined tone signal.

Abstract: A reproducing apparatus includes a reproducing section picking up any signals compressed in a plurality of different compression methods from a recording medium. The recording medium records the signals compressed in a plurality of different compression methods and record management information denoting association of the signals compressed in a plurality of different compression methods with each other, respectively. A decoding section decodes the signal picked up from said recording medium, and a recording section records reproduction management information including reproduction-interruption information in the reproducing section associated with the record management information onto the recording medium.

Abstract: A data processor according to the present invention includes receiving sections 100, 102 for receiving video data and audio data, a compressing section 101 for generating encoded data, complying with the MPEG-2 system standard, by encoding the video and audio data received, an auxiliary information generating section 103 for generating auxiliary information, which includes reference information to make reference to the encoded data and attribute information that uses a VOBU of the encoded data as a sample unit and that describes an attribute of the sample unit, and a writing section 120 for writing the encoded data and the auxiliary information on a storage medium as a data file and an auxiliary information file, respectively. The encoded data is decodable by either the auxiliary information file or the MPEG-2 system standard.

Abstract: An AV data recording apparatus and an AV data recording method are provided, in which even in the case of using the UDF file system, seeking can be minimized. The AV data recording method has file management information for managing continuous blocks on a disk as an extent, and dividing the extent into groups so as to manage the extent as a file, wherein a new directory is created on a disk, and a not recorded but allocated extent is kept as a reservation region for recording file management information.

Abstract: An AV data recording apparatus and an AV data recording method are provided, in which even in the case of using the UDF file system, seeking can be minimized. The AV data recording method has file management information for managing continuous blocks on a disk as an extent, and dividing the extent into groups so as to manage the extent as a file, wherein a new directory is created on a disk, and a not recorded but allocated extent is kept as a reservation region for recording file management information.

Abstract: An AV data recording apparatus and an AV data recording method are provided, in which even in the case of using the UDF file system, seeking can be minimized. The AV data recording method has file management information for managing continuous blocks on a disk as an extent, and dividing the extent into groups so as to manage the extent as a file, wherein a new directory is created on a disk, and a not recorded but allocated extent is kept as a reservation region for recording file management information.