Data processing: generic control systems or specific application – Specific application – apparatus or process – Digital audio data processing system
Reexamination Certificate
1997-09-08
2001-10-30
Mei, Xu (Department: 2644)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Digital audio data processing system
C381S061000, C704S270000, C704S278000
Reexamination Certificate
active
06311092
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a recording apparatus, a reproducing apparatus, and a recording and/or reproducing apparatus, and particularly to a recording apparatus, a reproducing apparatus, and a recording and/or reproducing apparatus having a storage device.
2. Prior Art
A voice signal recording apparatus such as a portable, small-size tape recorder and an optical magnetic disc apparatus capable of writing normally has a built-in microphone for recording in a cabinet thereof. The cabinet also has operation pushbutton switches such as a recording start pushbutton switch and a stop pushbutton switch.
These pushbutton switches are usually provided with a click mechanism so that a user can feel when a pushbutton switch is depressed, which assures the operation.
The above-mentioned small-size voice signal recording apparatus has a problem that a click sound is also recorded because it is impossible to assure a sufficient distance between a microphone and, for example, a recording start pushbutton switch.
FIG.
1
(A) through FIG.
1
(F) show a concrete example. If a recording start pushbutton switch is depressed at time t
1
and released at time t
2
as shown in FIG.
1
(A), and a stop pushbutton switch is depressed at time t
3
and released at time t
4
as shown in FIG.
1
(B), then, as shown in FIG.
1
(C), a voice is generated at each of these operations. The voices have the maximum amplitude at t
1
, t
2
, t
3
, and t
4
, respectively and the amplitude is gradually attenuated for a time interval T. Consequently, as shown in FIG.
1
(
f
), the click sounds are inputted over the voice to be recorded. On the other hand, as shown in FIG.
1
(E), recording starts with a delay of &Dgr;1 after time t
1
when the recording start pushbutton switch is specified, and the recording terminates with a delay of &Dgr;2 after time t
3
when the recording stop pushbutton switch is specified. That is, as shown in FIG.
1
(F), three click voices are recorded over the voice to be recorded.
Thus, a small-size voice signal recording apparatus having a built-in microphone has a problem that if a pushbutton switch provided with a click mechanism is used for improving operation feeling for a user, the click sound of the pushbutton switch is also unnecessarily recorded.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide a recording apparatus which resolves the above-mentioned problem.
It is another object of the present invention to provide a reproducing apparatus which resolves the above-mentioned problem.
It is a further object of the present invention to provide a recording and/or reproducing apparatus which resolves the above-mentioned problem.
According to the present invention, there is provided a recording apparatus including a microphone, an analog to digital converting circuit, a storage device, an input device, and a controller. The analog to digital converting circuit converts an output signal from the microphone, into a digital signal. An output signal from this analog to digital converting circuit is written in the storage device. The input device is capable of entering at least a recording start and recording stop. The controller, according to the operation of the input device, controls start and stop writing into the storage device of a digital signal produced from the analog to digital converting circuit. The controller controls so as to start writing into the storage device the digital signal from the analog to digital converting circuit when a predetermined time interval has passed after the input device is operated.
According to the present invention, there is provided a reproducing apparatus including a storage device, time setter, a memory, and a controller. At least one dynamic data is written into the storage device. The time setter is used for specifying a time. The memory stores a time data specified by the time setter. The controller reads out the dynamic data from the storage device according to the time data stored in the memory.
According to the present invention, there is provided a recording and/or reproducing apparatus including a microphone, an analog to digital converting circuit, a semiconductor memory, a digital to analog converting circuit, an input device, a controller, and a cabinet. The analog to digital converting circuit converts an output signal from the microphone, into a digital signal. The semiconductor memory stores an output signal from the analog to digital converting circuit. A digital signal read from the semiconductor memory is converted into an analog signal by the digital to analog converting circuit. The input device at least enters a recording start, recording stop, and reproduction start. The controller, according to an operation of the input device, controls writing of a digital signal from the analog to digital converting circuit into the semiconductor memory and reading of a digital signal from the semiconductor memory. The cabinet is provided with the microphone, the analog to digital converting circuit, the digital to analog converting circuit, and the input device.
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Maioli Jay H.
Mei Xu
Sony Corporation
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