JPH10341401A - Audio character signal reproducing device, audio signal recording and reproducing device, video audio signal recording and reproducing device, audio signal receiving, recording and reproducing device and video audio signal receiving, recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily reproduce/output character information at any time for any times if need by reproducing an audio signal from an audio signal recording medium where the audio signal containing an audio character signal is recorded and decoding the reproduced audio signal to obtain a character signal. SOLUTION: An audio signal reproduction means 402 reproduces the audio character signal from the audio signal recording medium 401 where the audio character signal is recorded by an audio character signal recording device. The reproduced audio character signal is supplied to a decoder 403 and it is converted into a character information signal corresponding to the audio character signal by one to one. The character information signal from the decoder 403 is supplied to a character information output means 404 and character information is outputted. Thus, the audio signal loading character information, namely, the audio character signal is reproduced from the audio signal recording medium 401, the audio character signal is converted into the character information signal and character information can be outputted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio character signal reproducing apparatus, an audio signal recording / reproducing apparatus, a video audio signal recording / reproducing apparatus, an audio signal receiving / recording / reproducing apparatus, and a video audio signal receiving / recording / reproducing apparatus.

[0002]

2. Description of the Related Art Heretofore, there has been no known technique for transmitting a character signal based on character information on an acoustic signal.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to propose an apparatus which can easily reproduce and output character information whenever necessary and any number of times.

[0004]

An audio character signal reproducing apparatus according to the present invention comprises a reproducing means for reproducing an acoustic signal from an acoustic signal recording medium on which an acoustic signal including the acoustic character signal is recorded, and a reproducing apparatus for reproducing the acoustic signal. And a character information output means for supplying a character signal from the decoder and outputting character information.

According to the present invention, the sound signal is reproduced by the reproducing means from the sound signal recording medium on which the sound signal including the sound character signal is recorded, and the reproduced sound signal from the reproducing means is decoded by the decoder. Then, a character signal is obtained, and a character signal from the decoder is supplied to the character information output means to output character information.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An acoustic character signal reproducing apparatus according to the present invention comprises: reproducing means for reproducing an acoustic signal from an acoustic signal recording medium on which an acoustic signal including the acoustic character signal is recorded; and reproducing from the reproducing means. It has a decoder for decoding a sound signal to obtain a character signal, and character information output means for supplying a character signal from the decoder and outputting character information.

Such an audio character signal reproducing apparatus can be provided in each of an audio signal recording / reproducing apparatus, a video audio signal recording / reproducing apparatus, an audio signal receiving / recording / reproducing apparatus, and a video audio signal receiving / recording / reproducing apparatus.

Embodiments of the present invention will be described below with reference to the drawings. In the present specification, a signal in a human audible band is referred to as an acoustic signal. Also, the acoustic character signal is
According to a predetermined rule, represents a characteristic sound signal corresponding to a character signal based on character information one-to-one,
It also includes a control code required to display character information. This acoustic character signal is a signal that can be recorded by a general recording device such as a tape recorder.

The present invention relates to an acoustic character signal reproducing apparatus for reproducing an acoustic signal recording medium on which such an acoustic character signal is recorded. First, an acoustic signal recording medium on which the acoustic character signal is recorded is prepared. The method will be described.

FIG. 1 is a block diagram showing an example of an acoustic character output device. The character information input unit 101 is a unit for inputting character information to be transmitted. The character information signal from the character information input unit 101 is supplied to the decoder 102 and converted into an acoustic character signal. The sound character signal from the decoder 102 is supplied to the sound output means 103,
An acoustic character is output.

As the typical sound output means 103, a speaker or a transmitting apparatus for transmitting a modulated signal obtained by modulating a carrier with an acoustic signal as a radio wave can be used.

FIG. 2 is a block diagram showing an example of the encoder 102 shown in FIG. A character information signal from the character information input means 101 is transmitted to a microcomputer (microcomputer).
201. The microcomputer 201 outputs a digital acoustic character signal corresponding to the input character information signal with reference to the correspondence table of the character information signal acoustic character signal correspondence table storage device 202 and supplies the digital acoustic character signal to the D / A converter 203. , And convert it to an analog acoustic character signal.

FIG. 3 is a block diagram showing an example of the acoustic character signal recording device. The sound input means 301 converts the sound character input thereto into an sound character signal, and the sound character signal is supplied to the sound signal recording means and recorded on the sound signal recording medium 303.

A typical sound input means 301 includes a microphone or a receiving device for receiving a radio wave carrying a sound signal and demodulating the sound signal.

According to the acoustic character signal recording device described above, the acoustic character signal is recorded on the acoustic signal recording medium 303.

FIG. 4 is a block diagram showing an acoustic character signal reproducing apparatus according to an embodiment of the present invention. An acoustic character signal is reproduced by the acoustic signal reproducing means 402 from the acoustic signal recording medium 401 on which the acoustic character signal is recorded by the acoustic character signal recording device of FIG. The reproduced acoustic character signal is supplied to the decoder 403 and converted into a character information signal corresponding to the acoustic character signal on a one-to-one basis. The character information signal from the decoder 403 is supplied to character information output means 404, and character information is output.

As a typical character information output means 404, there is a device comprising a character generator and a monitor. That is, the character information signal from the decoder 403 is supplied to a character generator and converted into a character signal, and the character signal is supplied to a monitor and displayed.

FIG. 5 is a block diagram showing an example of the decoder 403 of the acoustic character signal reproducing apparatus of FIG. The sound character signal from the sound signal reproducing means 402 is supplied to the band-pass filter 501, and only the necessary sound band is extracted. The acoustic character signal from the band-pass filter 501 is supplied to the A / D converter 502 and converted into a digital acoustic character signal. A / D converter 502
Is supplied to the microcomputer 503. The microcomputer 503 outputs a character information signal corresponding to the digital acoustic character signal with reference to the correspondence table of the character information signal acoustic character signal correspondence table storage device 504.

As described above, the acoustic signal carrying the character information, that is, the acoustic character signal is reproduced from the acoustic signal recording medium, the acoustic character signal is converted into the character information signal, and the character information is output. A playback device is realized.

In the above description, the audio character signal is output as it is. However, even if the audio character signal is superimposed on another audio signal and output, if the audio character signal can be separated and extracted from the audio signal, Similar effects can be obtained.

Further, even if the acoustic character signal and the acoustic signal are temporally switched and output in accordance with a predetermined rule instead of superimposing the acoustic character signal on another acoustic signal, the switched acoustic signal is output from the switched acoustic signal. If the original acoustic character signal can be separated and extracted, the same effect as described above can be obtained.

FIG. 6 is a block diagram showing a more specific example of the acoustic character output device. The character input key 601 generates a character information signal corresponding to the character input key by selecting and pressing one of the many character input keys. The character information signal from the character input key 601 is supplied to the encoder 602, and is converted into an acoustic character signal corresponding to the character information signal on a one-to-one basis. Encoder 60
The acoustic character signal from 2 is supplied to the speaker 604 through the amplifier 603, and the acoustic character is output, that is, uttered.

FIG. 7 is a block diagram of a more specific example of the acoustic character signal recording device. When an acoustic character is picked up by the microphone 701, an acoustic character signal is obtained therefrom. The acoustic character signal is recorded on a magnetic tape recording means (magnetic head).
The data is recorded on the magnetic tape 703 by 702.

With the above arrangement, a magnetic tape on which an acoustic character signal is recorded can be obtained.

Next, another example of a method for producing an acoustic signal recording medium on which an acoustic character signal is recorded will be described.

FIG. 8 is a block diagram of an example of the acoustic character signal transmitting apparatus. The character information signal from the character information input means 801 is supplied to the encoder 802 and converted into an acoustic character signal corresponding to the character information signal on a one-to-one basis. The sound character signal from the encoder 802 and another sound signal are supplied to the sound signal switch 803, and are switched according to a predetermined rule. The switched acoustic character signal and acoustic signal from the acoustic signal switch 803 are supplied to the transmission unit 805 through the amplifier 804. The transmitting unit 805 modulates the carrier wave signal with the switched acoustic character signal and acoustic signal, and supplies the modulated signal to the transmitting antenna 806 to be radiated as radio waves.

FIG. 9 is a block diagram of an example of the acoustic signal receiving and recording apparatus. The radio wave transmitted by the acoustic character signal transmitting device of FIG. 8 is received by the receiving antenna 901. A reception signal from the reception antenna 901 is supplied to the reception unit 902 and demodulated, and an audio signal in which an audio character signal and an audio signal are switched is obtained. The switched acoustic signal is recorded on the magnetic tape 904 by the magnetic tape recording means (magnetic head) 903.

Thus, a magnetic tape on which an acoustic character signal and an acoustic signal in which the acoustic signal is switched is recorded is obtained.

In this case, in the acoustic signal receiving and recording apparatus shown in FIG. 9, the received signal received by the receiving antenna 901 may be a modulated signal obtained by modulating a carrier signal with only an acoustic character signal. In this case, the receiving antenna 901
The received signal is supplied to the receiving means 902 and demodulated to obtain an acoustic character signal. This acoustic character signal is recorded on a magnetic tape 904 by a magnetic tape recording means (magnetic head) 903.

In this case, a magnetic tape on which an acoustic character signal is recorded is obtained.

FIG. 10 is a block diagram showing an acoustic character signal reproducing apparatus according to an embodiment of the present invention. A magnetic tape 1001 on which an acoustic character signal is recorded is reproduced by a magnetic tape reproducing means (magnetic head) 1002. The acoustic character signal reproduced by the magnetic tape reproducing means 1002 is supplied to a decoder 1003, and is converted into a character information signal corresponding to the acoustic character signal on a one-to-one basis. The character information signal is supplied to a character generator 1004 and converted into a character signal.
5, the character information of the character signal is output to the screen of the monitor 1005, that is, projected.

As described above, the acoustic signal carrying the character information signal is converted to a magnetic tape 1001 as an acoustic signal recording medium.
And the character information can be output to the monitor 1005.

The acoustic character signal can be any characteristic acoustic signal that is one-to-one corresponding to the character information signal in accordance with a predetermined rule. It is desirable that the signal is unlikely to be erroneously determined as an acoustic character signal.

Therefore, DTMF is used as the acoustic character signal.
An embodiment using a (Dual Tone Multi-Frequency) signal sequence will be described below. The DTMF signal sequence has a relatively low possibility of erroneously discriminating an audio signal that is not intentionally made to be similar to a DTMF sequence signal because the DTMF signal sequence has already been put to practical use in a telephone push line or the like. it is obvious.

FIG. 11 is a diagram showing the standard frequency of the DTMF signal. This figure shows that, for example, the sound signal representing “1” is a sound signal obtained by superimposing the sound signals of 1209 Hz and 697 Hz.

The circuit that generates the DTMF signal is a DTMF signal.
It has been made into a semiconductor integrated circuit as an F-tone encoder and has been generalized. For example, when "1" is input to the circuit, a superimposed signal of the acoustic signals of 1209 Hz and 697 Hz is generated.

A circuit for extracting a DTMF signal from an input audio signal is generally implemented as a DTMF tone decoder in a semiconductor integrated circuit. If the input audio signal of the circuit includes audio components of 1209 Hz and 697 Hz, "1" is output.

By associating such a signal sequence in which the DTMF signals are arranged in time series with the character information signal to be transmitted, it can be used as an acoustic character signal.

Next, an example of a DTMF encoder which can be applied to the encoder in each of the above embodiments will be described with reference to FIG. When the character information signal is supplied to the microcomputer 1201, the microcomputer 1201 outputs a signal corresponding to the character information signal by referring to the character information signal DTMF signal sequence correspondence table storage device 1202, and the signal is supplied to the DTMF tone encoder 1203. As a result, a DTMF signal sequence is output from the encoder 1203.

Next, an example of a DTMF decoder applicable to the decoder in each of the above-described embodiments will be described with reference to FIG. An acoustic character signal composed of a DTMF signal sequence is DT
The signal is supplied to the MF tone decoder 1301 and converted into a signal. The signal is supplied to the microcomputer 1302, and the microcomputer 1302 refers to the character information signal DTMF signal sequence correspondence table storage device 1303 and outputs a character information signal corresponding to the acoustic character signal composed of the DTMF sequence.

The DTMF encoder shown in FIG.
The DTMF decoder shown in FIG.
A system that encodes a TMF signal sequence and converts the DTMF signal sequence into an original acoustic character signal is configured.

FIG. 14 illustrates an example of a character information / acoustic character signal correspondence table in the character information transmitting / receiving system including the devices shown in FIGS. 9 and 10. This table shows, for example, that the character information “A” corresponds to the DTMF signal sequence “001 @”.

That is, when the user transmits the character "A", the speaker of the transmitting device transmits "001 @"
A TMF signal train is emitted. If the microphone of the receiving device picks up the DTMF string "001 @", "A" is displayed on the monitor.

When the user transmits the character "i", a DTM "002 @" is transmitted from the speaker of the transmitting apparatus.
An F signal train is emitted. Also, the microphone of the receiving device
If the DTMF sequence "002 $" is picked up, "I" is displayed on the monitor.

When the user transmits the character "Ai", a DTM "003 @" is transmitted from the speaker of the transmitting apparatus.
An F signal train is emitted. Also, the microphone of the receiving device
If the DTMF string “003♯” is picked up, “Ai” is displayed on the monitor.

As in the above example, one character does not necessarily correspond to one signal, and a plurality of characters can correspond to one signal. Also, it is more efficient to associate one signal with character information that is frequently transmitted.

The acoustic character signal receiving device of each embodiment described above can be provided in various electronic information devices. FIG. 15 shows a case where an acoustic character signal reproducing device is provided in an acoustic signal receiving / recording / reproducing device (tape recorder with a radio tuner). Reference numeral 1501 denotes the entire audio signal receiving / recording / reproducing apparatus, and reference numeral 1502 denotes its receiving antenna. Fifteen
03 shows a case where an acoustic character signal reproducing device is provided in the acoustic signal receiving / recording / reproducing device 1501.

FIG. 16 shows a case where an audio character signal reproducing apparatus is provided in a video / audio signal receiving / recording / reproducing apparatus (VTR with a television tuner). Reference numeral 1601 denotes the video / audio signal receiving / recording / reproducing apparatus as a whole, and 1602 denotes its receiving antenna. Reference numeral 1603 denotes a case where an audio character signal reproducing device 1603 is provided in the video / audio signal receiving / recording / reproducing device 1601.

In the above description, the case where an acoustic signal, that is, a signal in the human audible band is used as the acoustic character signal has been described as an example. Needless to say, the same effect can be obtained.

[0050]

According to the present invention, a reproducing means for reproducing an acoustic signal from an acoustic signal recording medium on which an acoustic signal including an acoustic character signal is recorded, and a reproduced acoustic signal from the reproducing means are decoded. Since it has a decoder for obtaining a character signal and character information output means for supplying the character signal from the decoder and outputting character information, the character information can be easily reproduced and output whenever necessary and as many times as necessary. Thus, an acoustic character signal reproducing device that can be operated can be obtained.

According to the present invention, a reproducing means for reproducing an acoustic signal from an acoustic signal recording medium on which an acoustic signal including an acoustic character signal is recorded, and a reproduced acoustic signal from the reproducing means for decoding a character signal And an audio character signal reproducing device including a character information output means for supplying character signals from the decoder and outputting character information, so that character information can be easily and whenever necessary. Thus, it is possible to obtain an audio signal recording / reproducing apparatus which can reproduce and output the audio signal.

According to the present invention, a reproducing means for reproducing an acoustic signal from an acoustic signal recording medium on which an acoustic signal including an acoustic character signal is recorded, and a reproduced acoustic signal from the reproducing means for decoding a character signal And an audio character signal reproducing device including a character information output means for supplying character signals from the decoder and outputting character information, so that character information can be easily and whenever necessary. A video / audio signal recording / reproducing apparatus which can reproduce and output the video / audio signal can be obtained.

According to the present invention, a reproducing means for reproducing an acoustic signal from an acoustic signal recording medium on which an acoustic signal including an acoustic character signal is recorded, and a reproduced acoustic signal from the reproducing means for decoding a character signal And an audio character signal reproducing device including a character information output means for supplying character signals from the decoder and outputting character information, so that character information can be easily and whenever necessary. Thus, it is possible to obtain an audio signal receiving / recording / reproducing apparatus which can reproduce and output the audio signal.

According to the present invention, a reproducing means for reproducing an acoustic signal from an acoustic signal recording medium on which an acoustic signal including an acoustic character signal is recorded, and a reproducing audio signal from the reproducing means for decoding a character signal And an audio character signal reproducing device including a character information output means for supplying character signals from the decoder and outputting character information, so that character information can be easily and whenever necessary. And a video / audio signal receiving / recording / reproducing apparatus capable of reproducing and outputting the same.

According to the present invention, a reproducing means for reproducing an acoustic signal from an acoustic signal recording medium on which an acoustic signal including an acoustic character signal is recorded, and a reproduced acoustic signal from the reproducing means for decoding a character signal And a character signal from the DTMF decoder,
Character information output means for outputting character information,
This acoustic character signal can easily reproduce and output character information whenever and whenever necessary and reduce the possibility of erroneously determining an acoustic signal that is not an acoustic character signal as an acoustic character signal. A playback device can be obtained.

According to the present invention, a reproducing means for reproducing an acoustic signal from an acoustic signal recording medium on which an acoustic signal including an acoustic character signal is recorded, and a reproducing audio signal from the reproducing means for decoding a character signal And a character signal from the DTMF decoder,
A character information output device that outputs character information, the character information reproducing device includes a character information output device that outputs character information. An audio signal recording / reproducing apparatus which can reduce the possibility of erroneously determining a signal as an audio character signal can be obtained.

According to the present invention, a reproducing means for reproducing an acoustic signal from an acoustic signal recording medium on which an acoustic signal including an acoustic character signal is recorded, and a reproducing audio signal from the reproducing means for decoding a character signal And a character signal from the DTMF decoder,
A character information output device that outputs character information, the character information reproducing device includes a character information output device that outputs character information. A video / audio signal recording / reproducing apparatus which can reduce the possibility of erroneously determining a signal as an audio character signal can be obtained.

According to the present invention, a reproducing means for reproducing an acoustic signal from an acoustic signal recording medium on which an acoustic signal including an acoustic character signal is recorded, and a reproduced acoustic signal from the reproducing means for decoding a character signal And a character signal from the DTMF decoder,
A character information output device that outputs character information, the character information reproducing device includes a character information output device that outputs character information. An acoustic signal receiving / recording / reproducing apparatus which can reduce the possibility of erroneously determining a signal as an acoustic character signal can be obtained.

According to the present invention, a reproducing means for reproducing an acoustic signal from an acoustic signal recording medium on which an acoustic signal including an acoustic character signal is recorded, and a reproduced acoustic signal from the reproducing means for decoding a character signal And a character signal from the DTMF decoder,
A character information output device that outputs character information, the character information reproducing device includes a character information output device that outputs character information. A video / audio signal receiving / recording / reproducing apparatus which can reduce the possibility of erroneously determining a signal as an audio character signal can be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an example of an acoustic character signal output device.

FIG. 2 is a block diagram illustrating an example of an encoder in FIG.

FIG. 3 is a block diagram illustrating an example of an acoustic character signal recording device.

FIG. 4 is a block diagram showing an acoustic character signal reproducing device according to an embodiment of the present invention.

FIG. 5 is a block diagram illustrating an example of a decoder in FIG. 4;

FIG. 6 is a block diagram illustrating an example of an acoustic character output device.

FIG. 7 is a block diagram illustrating an example of an acoustic character signal recording device.

FIG. 8 is a block diagram illustrating an example of an acoustic character signal transmission device.

FIG. 9 is a block diagram illustrating an example of an acoustic character signal receiving and recording device.

FIG. 10 is a block diagram showing an acoustic character signal reproducing device according to an embodiment of the present invention.

FIG. 11 is a diagram showing a standard frequency of a DTMF signal.

FIG. 12 is a block diagram illustrating an example of a DTMF encoder.

FIG. 13 is a block diagram illustrating an example of a DTMF decoder.

FIG. 14 is a table showing an example of a control command / acoustic character signal correspondence table.

FIG. 15 is a block diagram illustrating an audio signal receiving / recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 16 is a block diagram showing a video / audio signal receiving / recording / reproducing apparatus according to an embodiment of the present invention.

[Explanation of symbols]

401 sound signal recording medium, 402 sound signal reproducing means, 403 decoder, 404 character information output means.

Claims (10)

[Claims] 1. A reproducing means for reproducing an acoustic signal from an acoustic signal recording medium on which an acoustic signal including an acoustic character signal is recorded, and a decoder for decoding a reproduced acoustic signal from the reproducing means to obtain a character signal. And a character information output means for supplying a character signal from the decoder and outputting character information. 2. A reproducing means for reproducing an audio signal from an audio signal recording medium on which an audio signal including an audio character signal is recorded, and a decoder for decoding a reproduced audio signal from the reproducing means to obtain a character signal. And a character information output means for supplying a character signal from the decoder and outputting character information. 3. A reproducing means for reproducing an audio signal from an audio signal recording medium on which an audio signal including an audio character signal is recorded, and a decoder for decoding a reproduced audio signal from the reproducing means to obtain a character signal. And a character information output means for supplying a character signal from the decoder and outputting character information. 4. A reproducing means for reproducing an audio signal from an audio signal recording medium on which an audio signal including an audio character signal is recorded, and a decoder for decoding a reproduced audio signal from the reproducing means to obtain a character signal. And a character information output unit for supplying a character signal from the decoder and outputting character information. 5. A reproducing means for reproducing an audio signal from an audio signal recording medium on which an audio signal including an audio character signal is recorded, and a decoder for decoding a reproduced audio signal from the reproducing means to obtain a character signal. And a character information output unit that supplies character signals from the decoder and outputs character information. 6. The acoustic character signal reproducing device according to claim 1, wherein the decoder is a DTMF decoder. 7. The audio signal recording / reproducing apparatus according to claim 2, wherein the decoder is a DTMF decoder. 8. The video and audio signal recording and reproducing apparatus according to claim 3, wherein the decoder is a DTMF decoder. 9. The audio signal receiving / recording / reproducing apparatus according to claim 4, wherein said decoder is a DTMF decoder. 10. The video / audio signal receiving / recording / reproducing apparatus according to claim 5, wherein the decoder is a DTMF decoder.