JPH02272999A - Voice signal input/output switching device in electronic equipment - Google Patents

Abstract

PURPOSE:To simplify an operation by permitting a changeover control means to receive a loudspeaker selecting signal based on a signal sent from electronic equipment and to execute the switching control of a switching means for selecting a loudspeaker in response to it. CONSTITUTION:A changeover control means 20 receives the loudspeaker selecting signal based on the signal sent from electronic equipment 2i (i=1, 2, ...) and executes the switching control of a switching means 15j (j=1, 2,...) for selecting the loudspeaker in response to it. Consequently, a necessary signal is selected out of sound signals outputted by plural pieces of electronic equipment 2i (i=1, 2,...), and the signal can be outputted from the necessary loudspeaker among plural loudspeaker 21j (j=1, 2,...). Thus, the the operation can be avoided from being intricate.

Description

DETAILED DESCRIPTION OF THE INVENTION The details of the audio signal input/output switching device in the electronic device of the present invention will be explained according to the following items.

A. Industrial field of application B9 Summary of the invention C1 Background art 8 Problems to be solved by the invention E9 Means for solving the problems F. Examples [Figures 1 to 9] F-1, No. 1 Example [Figure 1] 80 circuits, operation F-2, second embodiment [Figures 2 to 4] a9 circuit [
Fig. 2 B, Operation [Figs. 2 and 3] C1 modification [Fig. 4] F-3, Third embodiment [Figs. 5 to 9] 80 circuits [Fig.
Fig. 5] b. How the memory device is used [Figs. 6 to 8] b-1゜ When using the memory device of an AV device [Fig. 6,
Figure 7 b-1-a, Example of using recording media of AV equipment [Figure 6] b-1-a-1, When using g1 air tape b-1-a-2, When using optical disc b- 1-b, Example of using IC memory provided in AV equipment [Figure 7] b-2, Case of using memory device in audio signal input/output switching device [Figures 8 and 9] G0 invention Effects (A. Field of Industrial Application) The present invention relates to an audio signal input/output switching device in a new electronic device. Specifically, the present invention describes an audio signal input/output switching device for a new electronic device that can select a predetermined signal from audio signals output by multiple electronic devices and output it to a desired one of multiple speaker devices. This is what we are trying to provide.

(B. Summary of the Invention) An audio signal input/output switching device for an electronic device of the present invention is an audio signal input/output switching device for an electronic device including a plurality of audio signal input terminals and a plurality of speaker output terminals, the device comprising: An input signal switching switch means for selecting a predetermined signal from among a plurality of audio input signals, and an audio input signal selected by the input signal switching switch means can be outputted to a predetermined speaker output terminal. The speaker selection switch means is separately provided for each of the speaker output terminals, and the switching operation of the speaker selection switch means is individually controlled in response to a speaker selection signal based on a signal sent from an electronic device. By providing a switching control means, it is possible to select the speaker environment through which the electronic equipment is used depending on the electronic equipment used, and this does not cause a significant increase in cost or complication of operation. It is something.

(C, Background Art) Currently, audio signal input/output switching devices for electronic devices are manually operated so that the audio signals output from the electronic device can be output to a predetermined one of a plurality of speaker devices. Devices equipped with a changeover switch are known. For example, an example of an electronic device equipped with such a changeover switch is disclosed in Japanese Utility Model Application Laid-Open No. 61-85968.

In addition, there is a single-person car multi-output selector device with such a function, which allows you to select one of multiple speaker output terminals for output, or output from several of them. A plurality of selection switches are provided for each speaker.

(D. Problem to be Solved by the Invention) By the way, large television receivers, display devices, etc. are used as part of an AV system in combination with multiple other electronic devices, such as component stereos. In such cases, there is an increasing demand for selecting a predetermined audio signal from among the audio signals output by multiple electronic devices and outputting it to a speaker device that matches the electronic device. .

However, in the above-mentioned devices, the basic idea is to output the audio signals outputted from the electronic device or the set of audio signals from a predetermined one of the plurality of speaker devices. As mentioned above, in order to be able to use multiple electronic devices as audio signal sources, select a predetermined electronic device from among them, and use a speaker device suitable for the electronic device, there will be an increase in cost. There is a problem in that the operation is complicated.

That is, if the electronic device has a changeover switch inside it as described above, a plurality of speaker devices must be arranged for each electronic device, and if a selector device is used, - You have to reconnect the selector device for each electronic device you are using to select the desired speaker device, or manually switch a large number of selector switches for each song to select the optimal speaker combination for the song. Otherwise, there would be a waste of redundant investment such as providing a selector device for each electronic device.

(E. 73. Means for Solving the Problem) Therefore, in order to solve the above-mentioned problem, the audio signal input/output switching device in the electronic device of the present invention has a plurality of audio signal input terminals and a plurality of speaker output terminals. An audio signal input/output switching device for an electronic device equipped with an input signal switching device for selecting a predetermined signal from among a plurality of audio input signals; A speaker selection switch means is provided for each speaker output terminal so that the audio input signal can be outputted to a predetermined speaker output terminal, and a speaker selection signal is received based on a signal sent from an electronic device. and switching control means for individually controlling the switching operations of the speaker selection switch means.

Therefore, according to the audio signal input/output switching device for electronic equipment of the present invention, it is possible to select a desired signal from audio signals output from a plurality of electronic equipment and output it from a desired one of a plurality of speaker devices. Therefore, there is no significant increase in costs, and the switching control means receives a speaker selection signal based on a signal sent from the electronic device, and in response to the speaker selection switch means. Since the switching control is performed, it is possible to avoid complicated operations.

(F. Embodiment) [FIGS. 1 to 9] Details of the audio signal input/output switching device in the electronic equipment of the present invention will be explained according to the illustrated embodiments. In the illustrated embodiment, in order to simplify the explanation, the audio signal will be assumed to be a monaural audio signal unless otherwise specified.

(F-1, First Embodiment) [FIG. 1] FIG. 1 shows a first embodiment 1 of an audio signal input/output switching device in an electronic device of the present invention.

(a, circuit) 2□ (i=1.2.3,...) in the figure is an electronic device (hereinafter referred to as rAV device) that has at least an audio signal processing circuit, such as an audio tape recorder or a compact disc. This concept includes audio equipment such as players, video equipment such as television receivers and video tape recorders, as well as devices such as amplifiers and selectors.

31 (i=t, 2.3, . . . ) is an audio signal output terminal, which is connected to the AV equipment 2. (i=1.2.3,...
) are provided respectively. The subscript "i" added to the code "3" indicating this audio signal output terminal means that it corresponds to the subscript ri of the AV equipment 21, and how to use such a code will be explained later in each section. The same applies to the explanation.

41 (i=1.2.3,...) is a speaker selection switch, and AV equipment 21 (i=1.2.3,...) is a speaker selection switch.
) are provided respectively. The speaker selection switch 41 (i=1.2.3, . . . ) is
For example, it has a demultiplexer configuration, and by switching contacts to predetermined positions, it is possible to select a speaker, which will be described later.

51 (i==1.2.3, . . . ) are encoder circuits whose input terminals are respectively connected to the output terminals of the speaker selection switches 45 (i=1.2.3, . . . ). 4. (i
=1.2.3,...), the predetermined encoding (
A binary evolution) signal is generated and output to the speaker selection signal output terminal 6 (i=1.2.3, . . . ).

71 (i=1.2.3, . . . ) are audio signal input terminals provided in the audio signal input/output switching device 1, and these are connected to the connection cord 8. (i=1.2.3,...) to each audio signal output terminal 31 (i=1.2.3,...) of the AV equipment 2□ (i=1.2.3,...) ) are connected separately to each other.

9, (i=1.2.3,...) is the speaker selection signal input terminal, and the connection code 10I (i=1.2.3,...) is the speaker selection signal input terminal.
) via the AV equipment 21 (i=1.2.3,
...) each speaker selection signal output terminal 61
(i=1.2.3, . . . ) are connected to each other separately.

11 is a manual switch for manually switching the audio signal, and each of its input terminals 121 (i=1.2.3, . . . ) is connected to the audio signal input terminal 7. (i=1.2.3,...), and the output side terminal 13 is connected to the power amplifier 1.
It is connected to the 4 input terminal.

15J (j=1.2.3, . . . ) is a switch element for speaker selection, and a relay contact, an active switch element, etc. are used, and these are connected to the output terminal of the power amplifier 14 and the speaker output terminal 16J (j =!, 2.3,
...) are connected in parallel with each other.

Note that these speaker selection switch elements 15j and speaker output terminals 16. The maximum value of the subscript "j" attached to
It does not necessarily match the maximum value of the subscript "i" attached to the code indicating each other part. In other words, the speaker output terminal 16
．． The total number of speakers connected to (j=1.2.3,...) is 21 AV devices (i=1.2.3,...)
can be arbitrarily provided regardless of the total number of.

17 is a changeover switch, which can be changed in conjunction with the manual switch 11 for audio signal input changeover;
Its input terminal 18+ (i=1.2.3,...)
are the speaker selection signal input terminals 91 (i=1.
2, 3, . . . ), and its output terminal 19 is connected to the input terminal of a decoder and switching circuit, which will be described later.

20 is a decoder and switching circuit, and AV equipment 21
(i=1.2.3,...) encoder circuit 51
When an encoded signal from (i=1.2.3,...) is sent via the connection code 101 (i=1.2.3,...), it is decoded and sent to the speaker. Selection switch element 15. (j=1.2.3, . . . ) switching (opening/closing or on-off operation) control signals are generated. By providing the encoder circuit and the decoder circuit in this way, the speaker selection switch 4. It is possible to avoid connecting all of the contacts (i=1.2.3, . . . ) to the input terminals of the switching circuit 20 using electric wires, and it is possible to reduce the number of transmission lines for the speaker selection signal. , making the connection easier.

21J (j=1.2.3,...) is a speaker whose control terminal is connected to the connection cord 22° (j=1.2.
3,...) via the speaker output terminal 16J (
j=1.2.3,...) respectively.

(b, !l)) However, in a system using the audio signal input/output switching device 1 described above, each AV device 21 (i=1.2.3
,...), for example, AVli! l
When using the device 21, the audio signal input switching manual switch 11 is switched to a state where the input terminal 12 and the output terminal 13 thereof are connected, as shown by the solid line in FIG.

Then, the changeover switch 17 is changed in conjunction with the changeover of the audio signal input changeover manual switch 11, and the input end terminal 18 and the output side terminal 19 are connected.

Therefore, when the speaker selection switch 41 is switched to a predetermined position, a speaker selection signal is sent from the encoder circuit 51 to the decoder and switching circuit 20, thereby causing the speaker selection switch element 15. (j=1.2.3,
...) is turned on, and the AV equipment 2.
The audio signal is output from a predetermined one of the speakers 21j (j=', 2.3, . . . ) via the power amplifier 14.

For example, if three speakers 21□, 212, and 213 are installed, and 211 is a front speaker, 21□ is a rear beaker, and 213 is a speaker placed in a separate room, the speaker selection switch 4I
By switching, one, two, or all of them can be used. In this case, the total number of possible combinations is 7, but if you include the state in which the speakers 21+ and 212.21s are not used at all, the number becomes 8. Therefore, it is sufficient to use a 3-bit encoder and decoder.

(F-2, Second Embodiment) [Figs. 2 to 4] Figs. 2 to 4 show a second embodiment 1A of the present invention and a modification thereof.

The difference between the audio signal input/output switching device shown in the second embodiment IA and the modified example from the audio signal input/output switching device 1 shown in the first embodiment is that the speaker selection signal path is It is used in combination with a signal path, for example, an audio signal path or a video signal path, and the audio signal input switching switch (corresponding to the audio signal input switching manual switch 11 in the first embodiment) is connected to a signal from another. The only difference is that it can be switched over. Therefore, only the parts that are different from each part in the first embodiment 1 will be explained, and the parts that are not different will be given the same reference numerals as those used for the same parts in the first embodiment 1. By doing so, the explanation will be omitted. The method of omitting such explanations also applies to the third embodiment, which will be described later.

(a, circuit) [Figure 2 231 (i=1.2.3,...) is the AV equipment 21
(i=1.2.3,...), and is a mixer provided at each of the audio signal output terminals 31 (i=1.2.3,...).
,...), the audio signal is mixed with the speaker selection signal output from the encoder circuit 51 (i=1.2.3,...) and output to the audio signal output terminal 31 (i =1.2.3,...).

Methods of mixing the speaker selection signal with the audio signal include, for example, changing the DC component, setting the frequency of the speaker selection signal outside the audible band, or mixing it within the 11i band, which may adversely affect the audio signal. All you have to do is mix a harmless speaker selection signal into the audio signal.

24I (i=1.2.3,...) is AV equipment 2, (
i=1.2.3, . 3,・
...) power-on operation and start command signals for each control operation are sent to each control section (not shown).

26 is an audio signal manual switching switch, and each of its input side terminals is connected to an audio signal input terminal 71 (i=1.2.3,
) are connected separately to each other.

27 is a separator circuit provided before the power amplifier 14 in order to separate the speaker selection signal from the audio signal, and its input terminal is connected to the output side terminal of the audio signal input changeover switch 26; An output terminal is connected to an input terminal of power amplifier 14.

The speaker selection signal separated by the separator circuit 27 is sent to the decoder and switching circuit 20 and decoded, whereby a predetermined control signal is transmitted to the speaker selection switch element 15. (j=1.2.3,...
).

At this time, the speaker selection signal and the actual speaker selection switch element 15. (j=1.2.3, . . . ) Since there is normally a delay between switching, the muting signal is sent from the decoder and switching circuit 20 to the power amplifier 14 for a predetermined period. It looks like this. For example, as shown in the time chart of FIG. 3, after the speaker switching operation I) sp is started with a slight delay from the rise of the speaker switching signal CsP, the switching operation ends after a predetermined time. Ting signal commercial
By synchronizing the rising edge of T with the rising edge of the speaker switching signal csp and making the muting period longer than the period required for the actual speaker switching operation, it is possible to avoid annoying noise when selecting a speaker. This avoids situations where the signal is output to the speakers.

28 is a switching circuit, and the A from the remote control commander 25 is
It has a receiving section that receives a V device selection signal, and is provided to control switching of the audio signal input switching switch 26 in accordance with this signal. The switching circuit 28 is, for example, a last-input priority circuit, so that the latest signal among the AV equipment selection signals is given priority.

(b, Operation) [Figures 2 and 3] However, in the second embodiment IA, when the operation button provided on the remote control commander 25 is pressed, the predetermined AV
A device selection signal is emitted, and this is the AV device 21 (i
=1.2.3,...) receiving section 24. (i=1.2.
3,...), and the desired device, for example, AV device 2, is selected, but the AV device selection signal at this time also reaches the receiving section of the switching circuit 28, and thereby The audio signal input changeover switch 26 is switched to connect the audio signal input terminal 7I and the input terminal of the separator circuit 27, as shown by the solid line in FIG.

Therefore, when the speaker selection switch 4 □ is switched to a predetermined position, the speaker selection signal output from the encoder circuit 51 is mixed with the audio signal, and this is output from the audio signal output terminal 31 and passed through the audio signal manual switching switch 26 . and is input to the separator circuit 27. Here, the audio signal and the speaker selection signal are separated, and the latter is sent to the decoder and switching circuit 2o through the speaker selection switch element 15j (j=1.2.
) are turned on, and after a predetermined muting period, the selected speaker 21. (j=1.2
．． 3,...).

(c, Modification) [FIG. 4] FIG. 4 shows a modification 29 of the second embodiment IA described above.

In the figure, 30+ (i=1.2.3,...) is AV equipment 21
(i=1.2.3,...), and the encoder circuit 51 (i=
1.2.3, . . .), and outputs the video signal output terminal 31° (i=1.2. 3,...).

321 (i=1.2.3, . . . ) is a device selection switch provided in each AV device 21 (i=1.2.3, . . . ), and the device selection switch 32 . (i
=1.2.3, . . . ) is output from the selection signal output terminal 331 (i=1.2.3, . . . ) of the AV equipment 21 (i=1.2.3, . . 2.3,...)
It is now sent to

34 is an audio signal manual changeover switch whose plural input terminals are audio signal input terminals 71 (i=1.2.3
, . . ), and their output terminals are connected to the input terminal of the power amplifier 14.

351 (i=1.2.3,...) is a video signal input terminal, and the AVQ unit 21 (i=1.2.3,...
・) Video signal output terminal 311 (i=1
．． 2.3,...) to each connection code 361 (iw
1, 2.3,...).

37 is a video signal input changeover switch whose plural input terminals are video signal input terminals 35° (iwl, 2.3,
), and their output terminals are connected to the input terminals of a separator circuit 38 provided for separating the video signal and the speaker selection signal. Then, when the separated speaker selection signal is sent to the decoder and switching circuit 20, switching control of the speaker selection switch element 15j (j=1.2.3, . . . ) is performed in accordance with this signal, and At this time, a predetermined muting signal is sent from the decoder and switching circuit 20 to the power amplifier 14 as in the second embodiment IA. The video signal separated by the separator circuit 38 is sent to a video signal output terminal (not shown).

391 (iwl, 2.3, ...) is a selection signal input terminal, and connection code 401 (i-1, 2, 3, ...) is a selection signal input terminal.
...) to the selection signal input terminal 331 of the AV equipment.
(iwl, 2.3, . . . ).

41 is a switch switching circuit for controlling the switching of the audio signal manual changeover switch 34 and the video signal manual changeover switch 37, and its plurality of input terminals are connected to the selection signal input terminals 391 (iwl, 2.3, . . . ). ) are connected to each separately. The switch switching circuit 41 is, for example, a last-in priority circuit, and the device selection switch 32. (=1.
The latest signal among the selection signals generated by the operations of 2.3, . . . ) is preferentially adopted, and the audio signal input changeover switch 34
and the video signal input changeover switch 37 are switched in synchronization.

(F-3, Third Embodiment) [Figures 5 to 9] Figures 5 to 9 show a third embodiment IB of an audio signal input/output switching device in an electronic device of the present invention and a device installed therein. This figure shows how the memory device is used.

(a, circuit) and FIG. 5] 421 (iwl, 2.3, . . . ) is a buffer whose input terminal is the encoder circuit 5I (iwl, 2.3, . . . ).
), and its output terminal is connected to the output terminal of the speaker selection signal output terminal 61 (iwl,...).
2.3,...).

Then, the buffer 421 (iwl, 2.3, . . .
・) is the timing signal TI (iwl, 2.3,...
) controls the opening and closing of the gate.

43+ (iwl, 2.3, ...) is a memory device, and in addition to storage means such as an IC memory or an IC card built into the AV equipment 21 (iwl, 2.3, ...),
When the device 21 (iwl, 2.3, . . . ) is a recording/reproducing device, its recording medium, for example, a magnetic tape, a magnetic disk, a magneto-optical disk, etc. can be used as a memory. In the case of such a read/write memory device, a write (or record) signal Wl
The speaker selection signal from the encoder circuit 51 (t=1.2.3,...) is written via the data bus or stored in the memory by (iwl, 2.3, · Salary ·). Data can be read out and sent to the buffer 421 (iwl, 2.3, . . .) using read (or reproduction) signals R, (iwl, 2.3, . . . ).

It is also possible to use a storage medium, such as an optical disk, on which data cannot be written by the user, as a memory; in this case, only the speaker selection signal recorded in advance on the recording medium can be read out or played back. It is done.

Reference numeral 44 denotes a speaker selection signal manual changeover switch, the input side terminal of which is connected to the speaker selection signal input terminal 91.
(i==1.2.3,...). The speaker selection signal input changeover switch 44 is linked with an audio signal input changeover switch 45 provided between the audio signal input terminal 71 (i=1.2.3, . . . ) and the power amplifier 14. It is designed to be switched by a switching means (not shown). Note that methods for selecting AV equipment include the aforementioned remote control method and connection code method.

46 is a buffer whose input terminal is connected to the output terminal of the speaker selection signal input changeover switch 44, and whose output terminal is connected to the input terminal of the decoder and switching circuit 20. The opening and closing of the gate of the buffer 46 is controlled by a predetermined timing signal T.

47 is the memory device 43. (t=i, 2.3,...
), storage and reading of speaker selection signals are controlled by control signals such as write signal W' and read signal R, and read data is sent to a decoder and switching circuit via a data bus. It is scheduled to be sent to the 20th. Incidentally, as an operational problem, this memory device 47 and the memory device 431 (i.e.
= 1.2.3, . . .), it is sufficient to set a priority order, such as giving priority to the last entry.

(b. How the memory device is used) [Figures 6 to 8] Next, several examples of how the memory device is used in Example IB of S3 above are shown in the AV equipment 2□ (i=1.2.3 ,...
・) Memory device 431 (i; 1.2.3,
) and the case where the memory device 47 is used will be explained separately.

(b-1, When using the memory device of AV equipment) [Chapter 6
In the following, an example in which a recording medium unique to the AV device is used as a memory, and an example in which an IC memory within the AV device is used will be explained.

(b-1-a, Example using a recording medium of AV equipment) [Fig. 6] Fig. 6 shows an example 48 in which a magnetic tape or an optical disk is used as a recording medium of an AV equipment.

(b-1-a-1, when using magnetic tape) 21 in the figure is an audio tape recorder using an analog signal recording method or a digital signal recording method, and includes a magnetic head 50 arranged opposite to a magnetic tape 49, The reproduced signal from the magnetic head 50 is demodulated and output as an audio signal to the audio signal output terminal 3. At the same time, it modulates the speaker selection signal and external audio input signal, and sends it to the magnetic field.
A recording/reproducing circuit 51 for recording signals onto the magnetic tape 49 via the magnetic tape 49 is provided.

52 is an interface circuit, and encoder circuit 5
It takes in the speaker selection signal output by I, converts it into a predetermined signal form, sends it to the recording and reproducing circuit 51, and records it on a predetermined position on the magnetic tape 49 via the magnetic head 50, or vice versa. When the speaker selection signal recorded on the magnetic tape 49 is read out via the magnetic head 50 and extracted by the recording/reproducing circuit 51, it plays the role of encoding it and sending it to the buffer 421.

Therefore, if it is desired to select, for example, the three speakers 21+, 212, and 213 according to the music to be performed, the speaker selection signals can be assigned as shown in the table below. In the table below, "O" means use of a speaker, and "x" means no use of a speaker.

When selecting a speaker suitable for the song recorded on the magnetic tape 49, first press the mode changeover switch provided on the operation section (not shown) of the tape recorder 2I to set the speaker selection mode, and then select the beginning of the song. After searching for a song based on the signal, the speaker selection switch 4 is switched to a predetermined position.

Then, by this operation, a predetermined encoded signal is generated from the encoder circuit 5I, for example, a speaker selection signal rloOJ when only the speaker 21 is desired to be used, and this is sent to the recording/reproducing circuit 51 via the interface circuit 52. The signal is modulated and recorded on the curved head of the magnetic tape 49 via the magnetic head 50.

Therefore, during reproduction, this speaker selection signal is first read out, demodulated and extracted by the recording and reproducing circuit 51, and then encoded via the interface circuit 52. Then, this is sent to the decoder and switching circuit 20 via the buffer 421 and the speaker selection signal input changeover switch 44, so only the speaker selection switch element 15+ is turned on, and the reproduced audio signal is transferred to the speaker 21.
, will be output from.

The method of recording the speaker selection signal as described above is applied to an analog recording type audio tape recorder, but like a digital audio tape recorder, there is a main data area for recording audio signals on the signal format, as well as a main data area for recording audio signals. If a subcode area is provided for recording additional information other than audio signals, the speaker selection signal can be recorded in the empty area of the subcode area, and this can be done by program processing on software. So it's easy.

(b-1-a-2, when using an optical disc) 22 in the figure is a compact disc player, and compact disc 5
an optical pickup device 54 for reading the recorded information of No. 3;
A digital signal processing circuit 55 is provided for demodulating the RF flaw signal from the optical pickup device 54 and the like.

If a speaker selection signal is recorded in advance in an empty channel of the subcode of this compact disc 53, this is read by the optical pickup device 54 during playback, and the speaker selection signal is demodulated and extracted by the digital signal processing circuit 55. is sent to the decoder and switching circuit 20 via the buffer 422 and the speaker selection signal manual changeover switch 44 at a predetermined timing, so that the speaker selection is automatically performed in accordance with the song.

However, if you do not want to automatically select a speaker based on the speaker selection signal recorded on the compact disc 53, the speaker selection switch element 15j (j=1.
2.3, . . .) may be appropriately switched by a manual switch.

(b-1-b, Example using IC memory provided in AV equipment) [Figure 7] Figure 7 shows the memory device 431 (iwl, 2.3,...
・Example 56 is shown in which the IC memory provided in the AV equipment 21 (iwl, 2.3, . . . ) is utilized.

In the figure, 571 (iwl, 2.3, ...) is an operation unit, which is composed of a plurality of pushbutton switches with automatic return contacts, such as the setting key UP key [)OWN
A key, a change (or clear) key, etc. are provided.

58 (iwl, 2.3, . . . ) is an encoder section, which receives a signal from the operation section 57 + (iwl, 2.3, . . . ) and outputs an encoded speaker selection signal. The speaker selection signal is provided in the display unit 591 (iwl
, 2.3, ...), and a confirmation display for speaker selection is made before setting.
The user can select the desired speaker by pressing the UP key or DOWN key while viewing this, and then by pressing the setting key, the encoded speaker selection signal is sent to the IC memory 601 via the data bus. It is written to a predetermined address (iwl, 2.3, . . . ). Then, on -day, when the speaker is selected, the operation section 571 (i-1,
Unless the change key of 2, 3, . . . ) is pressed, the I
The speaker selection signal recorded in the C memory 601 (iwl, 2.3, . . .) is read out, and this signal is sent to the buffer 42 + (iwl, 2.3, . .), the speaker selection signal input changeover switch 44, and the buffer 46 to the decoder and switching circuit 20,
When in use, the AV equipment 21 (i-1, 2, 3,...
) to the desired speaker 21. (j=1.2.3,
) will be selected for automatic fishing.

In this way, the IC memory 601 (iwl, 2.3,
), the operation section 571 (i-1, 2,
3,...) can use a so-called bush switch with an automatic return contact, which eliminates the restriction of using a mechanical switch with a residual contact such as a rotary type as in the above example. opened,
It is possible to reduce the number of contact points, etc.

(b-2, When using the memory device in the audio signal input/output switching device) [Figures 8 and 9] Figure 8 shows an example 61 of how the memory device 47 of the audio signal input/output switching device is used. It is something.

62 is an analyzer circuit whose input terminal is connected to the output terminal of the audio signal input changeover switch 45, which analyzes the audio signal, detects the tempo of a song, etc., and sends a predetermined address signal to the memory device 47. When the addressed speaker selection signal is read out by the R signal, it is sent to the decoder and switching circuit 20, so that the speaker 21° (j
;1.2.3,...) is selected. This makes it possible to automatically select speakers according to the type of music being played.

In addition to the above-mentioned audio signal analysis, it is also possible to detect a sound source (for example, a car or motorcycle), and in this case, as shown in FIG. 9(A),
Speaker 21J (J Yuki 1.2.3,
...) L channel speaker 21", (j=1
．． 2.3,...) and R channel speaker 21 (
RZ (j=1.2.3,...) may be arranged in a line so that they face each other, and each pair of speakers may be switched sequentially in the direction of the arrow, or they may be placed on a plane as shown in Figure 9 (B). Speaker 21J (j=1.2.3.4.5.6) viewed from
be arranged in a circle, and switch them one at a time clockwise, or two for each pair of speakers facing each other.
1. ．． 214 → 212.215 → 21s, 216 → 2
11214... or 211, 212 → 21 so that some of the beakers overlap.
□, 223 → 223, 224, etc. It is preferable to create a realistic sound effect.

(G. Effects of the Invention) As is clear from the above description, the audio input/output switching device for an electronic device of the present invention provides an audio input/output switching device for an electronic device including a plurality of audio signal input terminals and a plurality of speaker output terminals. The signal input/output switching device includes an input signal switching switch means for selecting a predetermined signal from a plurality of audio input signals, and a switch means for switching the audio input signal selected by the input signal switching switch means into a predetermined signal. speaker selection switch means provided separately for each speaker output terminal so that the output can be output to the speaker output terminal; and a speaker selection switch that receives a speaker selection signal based on a signal sent from an electronic device. The present invention is characterized in that a switching control means for individually controlling switching operations of the means is provided.

Therefore, according to the audio signal input/output switching device for electronic equipment of the present invention, it is possible to select a desired signal from audio signals output from a plurality of electronic equipment and output it from a desired one of a plurality of speaker devices. Therefore, there is no significant increase in costs, and the switching control means receives a speaker selection signal based on a signal sent from an electronic device, and in response to this, switches the switch for switching the speaker selection. Since the switching of the means is controlled, it is possible to avoid complicated operations.

It should be noted that the above-mentioned embodiments are merely illustrative of some cases where the audio input/output switching device in the electronic device of the present invention is applied, and the technical scope of the audio input/output switching device in the electronic device of the present invention is limited to these examples. This is not to be construed as being narrowly limited to AV equipment, but in terms of the configuration of the device, in addition to configuring it as a selector device with an audio input/output device as a unit, it is also possible to incorporate such an audio input/output device into AV equipment. In addition, various types of signal transmission methods are possible. For example, as a transmission method for a speaker selection signal, in addition to a coded signal, changes in signal potential or signal tone may be used. Alternatively, pulse signal transmission or the like may be used, and in addition to the above-mentioned electric line, an electromagnetic wave, an optical transmission line, etc. may be used as the signal transmission line.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a first embodiment of an audio input/output switching device in an electronic device of the present invention, and FIGS. 2 to 4 are a block diagram showing a second embodiment of an audio input/output switching device in an electronic device of the present invention. 2 is a block diagram, FIG. 3 is a time chart for explaining the muting operation, FIG. 4 is a block diagram showing the modification, and FIG.
9 to 9 show a third embodiment of the audio input/output switching device in the electronic device of the present invention, FIG. 5 is a block diagram, and FIGS. 6 to 8 show how the memory device is used. FIG. 6 is a block diagram showing an example in which a recording medium of an AV device is used as a memory device, FIG. 7 is a block diagram showing an example in which an IC memory in an AV device is used as a memory device, and FIG. 8 is a block diagram showing an example in which an IC memory in an AV device is used as a memory device. FIG. 9 is a block diagram showing an example of an audio input/output switching device using an IC memory, and FIG. 9 is a schematic diagram showing an example of speaker arrangement. Explanation of symbols 1...Audio signal input/output switching device in electronic equipment, 2 盈 (i=1.2.3,...)...Electronic equipment, 71 (i=1.2.3,...・)...Audio signal input terminal, 11...Switch means for input signal switching, 15, (j
=1.2.3,...)...Speaker selection switch means, 16, (j=1.2.3,...)...Speaker output terminal, 20...Switching control means, 1A...Audio signal input/output switching device in electronic equipment, 26...Switching means for input signal switching, 29...Audio signal input/output switching device in electronic equipment, 34...Switching means for input signal switching, IB...Audio signal input/output switching device in electronic equipment, 45...Switch means for input signal switching, 48...Audio signal input/output switching device in electronic equipment, 56...Audio signal input/output in electronic equipment Switching device, 61...Time chart diagram of audio signal input/output switching device in electronic equipment (second major flow example) Fig. 3

Claims (1)

[Scope of Claims] An audio signal input/output switching device for an electronic device equipped with a plurality of audio signal input terminals and a plurality of speaker output terminals, the device selects a predetermined signal from among the plurality of audio input signals. an input signal switching switch means for input signal switching, and a speaker provided separately for each speaker output terminal so that the audio input signal selected by the input signal switching switch can be outputted to a predetermined speaker output terminal. An electronic device comprising a selection switch means and a switching control means for individually controlling switching operations of the speaker selection switch means in response to a speaker selection signal based on a signal sent from the electronic device. Audio signal input/output switching device in