JP2607776Y2 - Audio equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio device.

[0002]

2. Description of the Related Art DAT (Digital Audio Tap)
e), DCC (Digital Compact Cassette) in 1992,
Digital recording devices such as MDs (Mini Discs) have been released, and digital recording has become generally available. Initially, digital recording devices such as these were single component or portable.
Had been released in the form of a single device called, along with the expansion of the market, progress in cost reduction of the digital recording device, Mi
Nikonpo, set to the audio device, such as system components
Included are expected.

FIG. 3 shows a configuration of a conventional audio device.
It is to block diagram. This audio device connects a tuner 20, a CD (Compact Disc) player 21, a cassette deck 22, and a preamplifier 23 to each other .
Configured as devices connected by system communication bus 24
Is done . Received by tuner 20 or CD
Reproduced by the layer 21 or the cassette deck 22
Audio signal is input to the integrated amplifier 23.
You. Switching between these audio signal sources (sources)
Key / display circuit 25 provided in integrated amplifier 23
Select audio equipment by operation Amplifier 2
Select the source by the switching <br/> Toggles Rukoto the changeover switch (SW) 26 by 3 in the CPU.

A tuner 20, a CD player 21, and a cassette deck 22 each have a CPU (Central P
and a system control via a system communication bus 24.

FIG. 4 is a flowchart showing the operation of the conventional audio device of FIG. For example, if the CD player 21 (analog input 1) is selected as the source
(S14) The CPU of the pre-main amplifier 23 switches SW26.
Is switched to the CD player side (S15). As a source
Te, tuner 20 (analog input 2), cassette deck 2
2 (analog input 3) or auxiliary ( AUX : Auxiliary) input
Similarly , when the audio device connected to the input (analog input 4) is selected , switch SW26 to the tuner side and cassette
Tsu key side, or Ru switched to the AUX side.

[0006] If it is here selected cassette deck 22 (analog input 3), CPU Integrated Amplifier 23
It communicates with the CPU of the cassette deck 22 via a system communications bus 24 that is switches the SW26 to side cassette deck 22, a recording prohibited (S16), hank
The CPU of the deck 22 is prohibited from recording on cassette tape.
I had control of.

[0007]

[Present challenges invention is to provide a conventional digital recording device is incorporated into an audio device such as a mini component, digital audio de as the digital recording device is input
No examples dealt with both data and analog audio signals. When a digital audio device such as a CD player is used as a source of the audio device, it is desired to record the digital signal with a high quality digital signal on a digital recording device .

[0008] In this background, the embedded digital recording device to the audio device, if the digital recording device handles both digital audio data and analog audio <br/> signal as an input, is input by the preamplifier portion of the audio device Source switching and digital audio
Recording output of data or analog audio signal (REC
To switch the OUT), also, the digital audio data and analog Eau of digital recording device is recording input
Such as selecting the I o signal, it is necessary to a complicated operation
And the connection of the source is complicated.

[0009]

The audio apparatus according to the present invention comprises: a digital reproducing means for reproducing digital audio data; an analog reproducing means for reproducing analog audio signals; a digital recording means for recording digital audio data; and selecting means for selecting one of the reproducing means of the digital reproduction means and analog reproducing means, digital audio to be played by the digital playback means or said analog reproducing means selected by said selection means
Analog data signal obtained by DA conversion of
A reproduction selector switch for switching to select the analog audio signal, the digital reproducing unit, the analog reproduction means, and control of the operation of the digital recording device
Control means for controlling the switching of the reproduction changeover switch , and the digital recording means comprises:
Analog audio input from the playback switch
A / D conversion to convert E signal to digital audio data
Means and a digital input from the digital playback means
Audio data and data input from the AD conversion means.
Switch to switch digital audio data
Switch , wherein the control means is controlled by the selection means.
The selected playback means is digital playback means or analog playback
Identification data indicating means is input to said digital recording means, the digital recording means is to switch the recording changeover switch based on the identification data.

[0010]

In the audio device, the reproduced audio is reproduced.
When recording audio signals, digital audio
Select data with priority. Therefore, digital
Switching between audio data and analog audio signals
Digital operation that simplifies complicated operations such as
Audio data is automatically selected and recorded.
it can.

[0011]

FIG. 1 shows an embodiment of an audio device according to the present invention.
FIG. 3 is a block diagram showing the configuration of FIG. Oh with Amplifier 1 and tuner 2 and the CD player 3 and the MD recorder 4
1 shows an example of an audio device . There are a tuner 2 and an AUX as audio equipment for analog signals, and a CD player 3 and an MD recorder 4 as audio equipment for digital signals.
Each device has CPUs 5, 6, 7, and 8, and performs system control via a system communication bus 9 as communication means.

FIG. 2 shows the audio device of the present invention shown in FIG.
6 is a flowchart illustrating an operation of one embodiment . For example,
When the key / display circuit 10 selects the CD player 3 (digital input 1) as the source (S1) , the CPU 5
It is determined as a digital input by switching the changeover switch (SW1) 11 to the CD player side CPU5
With digital input to Integrated Amplifier 1 (S2)
And the changeover switch (SW2) 12 is connected to the DA converter (D /
A) Switching to the 13 side (S3), digital audio data
Data to an analog audio signal and output to a speaker .

[0013] Here, the digital audio data outputs of the plurality of audio devices having digital audio data,
The D / A 13 is shared, and is provided only in the pre-main amplifier 1 so as to perform DA conversion collectively. Each audio device transmits audio data as digitally as possible to ensure high-quality sound.

[0014] The CPU 5 outputs a RECOUT output digitally.
Information for discriminating as being in communication (identification data) to the MD recorder 4 by a system communications bus 9 (S4). MD
The recorder 4 receives the identification data by the CPU 8, and switches the changeover switch (SW3) 14 to the PLL circuit 15 side.
You.

If the MD recorder 4 is selected as the source (S5), switch SW1 (11) to the MD recorder side
(S6), SW2 (12) is switched to the D / A side (S7).
Then, it notifies the MD recorder 4 that the recording is prohibited.
(S8).

A case where an analog audio signal is selected as a source will be described. For example, analog audio
When the tuner 2 (analog input 1) is selected by the key / display circuit 10 as the audio signal (S9), SW2 (12) is
It is switched to the una side (S10). Analog audio
When AUX (analog input 2) is selected as the E signal
If (S11) , SW2 (12) switches to AUX side
It is (S12).

The analog output from the tuner 2 or the AUX
Dio signal are both when it is output to RECOUT output of the analog and outputted to the speaker 18 via the attenuator 16 and amplifier 17. Further, identification data for determining an analog signal is communicated to the MD recorder 4 via the system communication bus 9 (S13). MD recorder 4
Receives the identification data in the CPU 8 and sets SW3 (14) to A
Switch to the D conversion circuit 19 side, where the analog audio
Audio signal to digital audio data for recording.
You .

The system communication bus 9 of this embodiment can perform conventional timer recording of the tuner 2 and synchronized recording with the CD player 3, but even in such a case, the CPU 5 Whether the recording source is digital or audio
The identification data of the analog is transmitted to the MD recorder 4 and the CP
U8 switches the SW3 (14) to determine the identification data.

As described above, the reproduction output and RECOUT
An output, and switching of the MD recorder for digital and analog signals, communicating by a system communication bus, due to a configuration in which control is performed substantially simultaneously switched, selection <br/> the source function switch Amplifier side Switching of signals can be performed by a simple operation of selecting.

[0020]

According to the audio device of the present invention, the saw
Only perform a scan of the selection operation, the source of the reproduction output switches
For example, source switching of recording output, and digital audio
It is possible to switch between the circuits for the audio data and the analog audio signal .

[Brief description of the drawings]

FIG. 1 shows a configuration of an embodiment of an audio device of the present invention.
It is to block diagram.

FIG. 2 shows the operation of one embodiment of the audio device of the present invention.
It is to flow chart.

FIG. 3 is a block diagram illustrating a configuration of a conventional audio device .

FIG. 4 is a flowchart showing the operation of a conventional audio device .

[Explanation of symbols]

 1,23 Integrated amplifier 2,20 Tuner 3,21 CD player 4 MD recorder 5,6,7,8 CPU 9,24 System communication bus 10,25 Key / display circuit 11,12,14,26 Changeover switch 13 DA conversion Circuit (D / A) 15 PLL circuit 16 Attenuator 17 Amplifier 18 Speaker 19 AD conversion circuit (A / D) 22 Cassette deck

Claims (1)

(57) [Scope of request for utility model registration] And 1. A digital reproducing means for reproducing digital audio data, and analog reproducing means for reproducing the analog audio signal, and the digital recording means for recording the digital audio data, the one of said digital reproduction means and the analog reproduction means selection means for selecting the reproducing means, digital reproduced by the digital reproducing means or said analog reproducing means selected by said selection means
Analog audio converted from digital audio data
Cut to select a signal or analog audio signal
A reproduction selector switch changing, the digital reproducing unit, the analog reproduction means, and control of the operation of the digital recording means, and comprising a control means for controlling to switch the reproduction selector switch, the digital recording means, the reproduction Analog input from the changeover switch
Audio signal to digital audio data
AD conversion means, and
Digital audio data and input from the AD conversion means.
Recording off for switching digital audio data
Comprising a Toggles switch, said control means, said selecting Hand
If the playback means selected by the step is a digital playback means or an
Enter the identification data indicating whether analog reproducing means to said digital recording means, the digital recording unit audio device, characterized in that switching the recording changeover switch based on the identification data.