Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Control of information signal processing channel
Reexamination Certificate
2000-06-19
2001-10-30
Edun, Muhammad (Department: 2651)
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Control of information signal processing channel
C369S047160, C369S053370, C369S053450
Reexamination Certificate
active
06310842
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a recording apparatus which can record a signal such as, for example, an audio signal inputted thereto onto a recording medium.
In recent years, disk media onto and from which audio data can be recorded and reproduced such as, for example, a mini disk (MD, trademark) and recording and reproduction apparatus on which such disk media can be used have been popularized widely.
In such a MD recorder/player as just mentioned, a user can obtain an audio library arbitrarily by recording, for example, an audio signal reproduced by an audio apparatus such as a compact disk (CD) player or an audio signal outputted from a radio set onto a MD.
In a digital audio system such as a MD recorder/player as described above, audio data are usually managed in a unit called “program”. Here, a program in the present specification signifies a set of data which are managed and recorded in a unit on a disk, and for example, with regard to audio data, it corresponds to one tune (generally called “track”) or the like. Therefore, in the following description, a program may suitably be referred to as track.
As audio signals in general music applications, audio signals of the 2-channel stereo system and the monaural system are used frequently.
In digital data recording, when audio data of the stereo system are encoded into recording data to be recorded onto a recording medium, a formatter stream is formed and recorded such that it may be a data stream which includes L-channel data and R-channel data arranged time-divisionally therein.
In recent years, a MD recorder/player has been developed wherein it can execute monaural recording on the premise that it can record L and R stereo audio data having the data structure described above. In monaural recording, for example, an audio signal inputted as a signal of a single channel is successively placed into sound frames of L channel data and R channel data to form a data stream. The data stream obtained in this manner has a data amount equal to ½ that upon stereo recording, and therefore, a recordable time equal to twice that by stereo recording can be obtained with the same recording medium. For example, with regard to a MD recorder/player, while a mini disc which allows recording for 74 minutes has been placed on the market, monaural recording makes it possible to perform recording of the mini disk for 148(=74×2) minutes.
Among mini discs placed on the market as described above, a mini disk of the type which has a recording capacity for recording of stereo data for 74 minutes has been popularized widely. This corresponds to the fact that the maximum recordable time of, for example, a CD is nominally 74 minutes, and the mini disk of the type described is designed so that all contents recorded on a CD can be recorded (called dubbing) onto it.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a recording apparatus and a recording method by which a long recordable time for a recording medium can be assured.
In order to attain the object described above, according to the present invention, there is provided a recording apparatus for recording a signal onto a recording medium, comprising recording means for recording the signal onto the recording medium in accordance with one of recording modes selected from within a plurality of recording modes, signal discrimination means for discriminating a signal state of the signal, and changeover control means for changing over the recording mode of the recording means in response to a result of the discrimination by the signal discrimination means.
The above and other objects, features and advantages of the present invention will become apparent from the following description and the appended claims, taken in conjunction with the accompanying drawings in which like parts or elements denoted by like reference symbols.
REFERENCES:
patent: 5177728 (1993-01-01), Otsubo et al.
patent: 5684763 (1997-11-01), Kurita et al.
Edun Muhammad
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Sony Corporation
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