JPS60196053A - Pb signal deletion sound storage control system - Google Patents

Abstract

PURPOSE:To delete the PB (push-button) signal to store only the sound signal and also to attain the effective use of a storage device by detecting the PB signal mixed into the sound data by a PB receiver in a sound data storage mode and applying the detected signal to a sound data processing part. CONSTITUTION:The detection signal SP is applied to a switch circuit 12 and an address control part 17. Then the circuit 12 is turned off to prevent application of the PB signal to buffer memory 14 via an A/D converter 13. While the part 17 sends the PB signal back to a write starting address and also stops the address advance during a period of the PB signal. When the signal SP does not exist any more, the circuit 12 is turned on to write the sound data to the memory 14. This write starting address is equal to the address whose stepwise advance is stopped. Thus the sound data is written on the PB signal written previously and partially. Then the PB signal is deleted and stored to a storage device 16.

Description

[Detailed Description of the Invention] Technical Field of the Invention The present invention is directed to a storage device in a storage and exchange system, etc., in which only audio signals are stored by removing unnecessary PB double signals (push button signals). The present invention relates to a PB signal removal audio accumulation control method.

Prior Art and Problems In a store-and-forward system, a storage device consisting of a magnetic drum device, a magnetic disk device, etc. is provided to store audio signals in response to requests from subscribers, and to store audio signals in response to requests from other subscribers. Alternatively, the stored content can be reproduced and transmitted at a specified time. Furthermore, with the development of switching networks, it has become possible to control various devices in the home from outside the home using telephones, etc., and to temporarily stop or perform other controls during voice storage. For the sake of
A subscriber may send out a PB double signal.

If the PB signal is accumulated together with the PB multiplied audio signal, not only will the reproduced sound become harsh, but the reproduced PB signal may act as a control signal for various devices in the home, causing unexpected malfunctions. Therefore, it is necessary to remove the PB multiplied signal during audio storage.

Conventionally, the PB multiplied signal removal during audio storage has been performed using the configuration shown in FIG.

That is, an analog voice signal or a PB multiplied signal is input from a terminal 1 connected to a public line network or a private branch exchange, and is applied to an AD converter 2 and a PB receiver 7. The audio data converted by the AD converter 2 is applied to the storage control unit 5 via the delay circuit 3 and the switch circuit 4, and the storage control unit 5 performs format conversion and transfer control for storage in the magnetic disk device 6. is performed and stored in the magnetic disk device 6. Note that the configuration for reproducing the stored contents of the magnetic disk device 6 and transmitting it to the subscriber is omitted from the illustration.
I'm here.

Also, if a PB double signal is added to input terminal 1, 1) B
The receiver 7 detects the PB signal and sends the detection signal 5F) (
signal present) is added to switch circuit 4, P
The switch circuit 4 is turned off so that the B-fold signal is not accumulated, and the detection signal SP and the PB-fold signal identification signal PBS are transferred to a PB signal reading section (not shown).

FIG. 2 is an explanatory diagram of the operation, and as shown in (a), when the analog audio signal AU and the PB multiplied signal are input to the input terminal 1, the PB receiver 7 distinguishes between the audio signal and the PB multiplied signal. After a dead time of 1'', the detection signal SP obtained by detecting the PB double signal is outputted as shown in fbl. Also, the delay circuit 3
As a result, the audio data DAU and the PB signal data DPB are separated by a delay time corresponding to the dead time T of the PB receiver 7 (C
), the switch circuit 4 receives the detection signal S
Since it is off for a period of P, the PB times signal is removed and (d
As shown in +, only the audio data DAU is stored in the magnetic disk device 6.

In order to remove and accumulate the PB multiplied signal in this way, a delay circuit 3 is required to provide a delay time corresponding to the dead time T of the PB receiver 7, which increases the amount of hardware.
Even if the B-multiple signal can be removed by the switch circuit 4 and stored in the magnetic disk drive 6, the time corresponding to the PB-multiple signal becomes a silent period during playback, resulting in an unnatural feeling in the reproduced sound.

OBJECTS OF THE INVENTION The present invention aims to omit a delay circuit which would increase the amount of hardware, remove the PB multiple signal, make it possible to store only the audio signal, and make effective use of the storage device. be.

Structure of the Invention The present invention provides an audio data processing unit having a buffer memory for temporarily storing manually input audio data, a storage device that stores audio data via the audio data processing unit, and detecting the reception of a PB double signal. a PB receiver, when the PB receiver detects the PB double signal mixed in the audio data when storing the audio data, the detected signal is added to the audio data processing section, and the PB double signal written on the buffer memory is Hack the write address to the address corresponding to the write start address to stop the advance, start writing audio data from the write address that was stopped when the detection signal disappeared, and write a predetermined amount of writing content. Therefore, the written contents are transferred to the storage device and stored therein, and the PB times signal is removed on the buffer memory. Examples will be described in detail below.

Embodiment of the invention FIG. 3 is a block diagram of main parts of an embodiment of the invention.
1 is an input terminal connected to the public line network or private branch exchange;
12 is a switch circuit, 13 is a ΔD converter, 14 is a buffer memory, 15 is a PI3 signal receiver, 16 is a storage device, and 17 is an address control section. In this embodiment as well, the means for reproducing the stored content from the storage device 16 and transmitting it to the subscriber is omitted from illustration because various known means can be employed. An analog voice signal applied to an input terminal 11 from a public line network, a private branch exchange, or the like is applied to an AD converter 13 via a switch circuit 12 and converted into a digital signal. This converted audio data is added to the buffer memory 14. This buffer memory 14 is controlled by an address control section 17, and when a predetermined amount of data has been written, the data is transferred to the storage device 16.

The address control unit 17 writes data into the buffer memory 14,
It performs read control and address control,
The audio data output from the AD converter 13 is written to the address of the buffer memory 14 specified by the address control section 17. Then, the address is incremented by 1 for each writing unit of audio data, and when the audio data written in the buffer memory 14 reaches a predetermined amount, it is sequentially read out and transferred to the storage device 16.

When a PB double signal is input during audio data storage, it is detected by the PB receiver 15, and this detection signal SP
and the signal PBS identified as the PB multiple signal are output. The detection signal SP is transmitted to the switch circuit 12 and the address control section 17.
, the switch circuit 12 turns off and prevents the PB multiplied signal from being added to the buffer memory 1-4 via the AD converter 13. Further, the address control section 17
The address corresponding to the dead time of the B receiver 15, that is, P
The B-fold signal is hacked to the write start address, and the address increment is stopped during the period of the seven detection signals sp. Therefore, the first part of the PB multiplied signal is written into the buffer memory 14, but the address control unit 17
The write address is banked. Then, when the detection signal SP disappears, the switch circuit 12 is turned on,
Audio data is written into the buffer memory 14. Since the write start address is the address where incrementing was stopped, the audio data will be written on the PB double signal that was partially written earlier, the PB double signal will be removed, and the storage will be accumulated. It will be stored in the device 16.

FIG. 4 is an explanatory diagram of the operation on the buffer memory according to the embodiment of the present invention, in which (as shown in al), the audio data DAU is sequentially written by incrementing the write address by the address control unit 17, and the PB When the double signal is input), the PB signal data DPB is written from address a, and the address is
Assuming that the PB receiver 15 detects the PB double signal when proceeding from to b, the switch circuit 12 is turned off by the detection signal SP as described above, and the address control section 17
As shown in (bl in FIG. 4), the address of the buffer memory 14 is hacked from b to address a corresponding to the dead time of the PB receiver 12, that is, the PB double signal writing start address a. Then, it stops incrementing the address until the detection signal SP from the PB receiver 15 disappears, and when the detection signal SP disappears, it starts writing audio data from address a and starts incrementing the address. be.

Therefore, even if part of the PB double signal is written in the buffer memory 14, the next audio data will be written in that write area, so the PB double signal has been removed, and this buffer Since the audio data is stored in the storage device 16 via the memory 14, only the audio data is stored. Furthermore, since the audio data is stored in a time-compressed state during the silent period from which the PB double signal has been removed, the silent period does not continue during playback (and does not give a sense of discomfort to the listener).

Note that format conversion of audio data for the storage device 16 can be added to the subsequent stage of the buffer memory 14, and it is also possible to further compress and encode the audio data to effectively utilize the storage capacity of the storage device 16. It is.

As described in detail, the present invention includes the buffer memory 14 for temporarily storing input audio data and the address control section 17.
A storage device 16 such as a magnetic disk device or a magnetic drum device that stores audio data via the audio data processing portion, and a PB receiver 15 that detects reception of a PB double signal. When the PB double signal is detected by the PB signal receiver 15 during audio data storage, the audio data processing section banks the write address up to the address corresponding to the PB double signal write start address on the buffer memory 14. When the detection signal SP disappears, writing of audio data is started from the write address that was stopped, and when the content of the buffer memory 14 reaches a predetermined amount, it is transferred to the storage device 16. Since the PB multiplied signal is removed on the buffer memory 14, only the audio signal is stored in the storage device 16. Therefore, even when the audio signal is reproduced from the storage device 16, the PB double signal is not mixed in, and writing is stopped during the PB double signal period, so writing area is not wasted. Therefore, it is possible to effectively utilize the storage capacity of the buffer memory 14 and the storage bag W16, and there is an advantage that the player does not feel uncomfortable when opening the bag during playback. Further, since a delay circuit is not required as in the conventional example, there is an advantage that the hardware configuration is simple.

[Brief explanation of drawings]

Fig. 1 is a block diagram of the main part of the conventional example, Fig. 2 is an explanatory diagram of the operation of the first cabinet, Fig. 3 is a block diagram of the main part of the embodiment of the present invention,
FIG. 4 is an explanatory diagram of the operation on the buffer memory according to the embodiment of the present invention. 11 is an input terminal connected to a public line network or a private branch exchange, 12 is a switch circuit, 13 is an AD converter, 14 is a buffer memory, 15 is a PB signal receiver, 16 is a storage device,
17 is an address control section. Patent Applicant Fujitsu Ltd. Representative Patent Attorney Akira Aitani Representative Patent Attorney Hiroshi Watanabe - Figure 1 Figure 2 cd) DAU DAU Figure 3 Figure 1 to Figure 4 (a) (b) (c)

Claims (1)

[Claims] An audio data processing unit having a buffer memory that temporarily stores input audio data, a storage device that stores audio data via the audio data processing unit, and a PB receiver that performs PB double signal reception detection. In the audio storage device, when the PB receiver detects the PB double signal mixed in the audio data when storing the audio data, the detected signal is added to the audio data processing section, and the PB double signal written on the buffer memory is Bank the write address to the address corresponding to the write start address and stop the sidewalk, and delete the PB double signal by starting writing audio data from the write address that was stopped when the detection signal disappeared. A PB signal removal audio accumulation control method.