JPS6330661B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a text creation machine using a computer, a so-called word processor, and is intended to expand the functionality.

This type of word processor includes, for example, a keyboard switch device arranged in the same arrangement as a typewriter, a signal processing circuit that converts the signal from the keyboard device into a code signal, and a signal processing circuit that decodes the code signal to generate instructions. It consists of a display device that displays code signals, and a recording device that records code signals on a recording medium.

In such a word processor, when an arbitrary sentence is input from a keyboard device, that sentence is coded character by character and displayed on a display device, and a code signal is recorded on a recording medium. Therefore, by reproducing this recording medium at a desired time, the above-mentioned arbitrary sentence can be retrieved, and this sentence can also be easily corrected by operating the keyboard device.

By the way, the applicant of the present application has previously proposed that such a word processor be capable of recording audio signals as well. This is suitable for, for example, recording a dictation and inputting it later by key.

The present invention enables such an apparatus to further reduce the amount of recording medium consumed and to record code signals in good quality. An embodiment of the present invention will be described below with reference to the drawings.

First, FIG. 1 shows the operating section of a word processor according to the present invention. In the figure, 1 is a keyboard device in which key switches corresponding to each letter of the alphabet are arranged in an arrangement similar to that of a typewriter. Reference numeral 2 denotes a display device in which, for example, 40 5×7 dot matrix liquid crystal display sections are arranged side by side. Reference numeral 3 denotes a recording/reproducing device, and a so-called microcassette type tape recorder is provided. Furthermore, a control switch 4 for the tape recorder and an editing switch 5 used for correcting text, etc. are provided. Further, 6 is a speaker, 7 is a microphone, and 8 is a power switch.

The internal configuration of this device is as shown in FIG. That is, an output signal from the keyboard device 1 is supplied to a key encoder 11, and this encoded signal is supplied to a central processing circuit (CPU) 12 constituting a signal processing circuit. This processing circuit 1
2 is supplied to the display device 2 through the matrix encoder 13.

Furthermore, the processing circuit 12 has an interface circuit 1.
4 is connected. A main memory 15 and a buffer memory 24 are connected to this circuit 14.
Each of these memories 15 and 24 has one page, for example.
It has a storage capacity that can accommodate code signals of 80 characters x 40 lines.

Further, the audio signal from the microphone 7 is supplied through the amplifier 17 to a low-pass filter 20 of, for example, 6 kHz or less, and the output of this filter is supplied through the mixing circuit 16 to the recording head _HR of the recording/reproducing apparatus 3. This recording/reproducing device 3 has a recording head.
A recording head _HR is provided on the downstream side in the running _direction (arrow) of _the tape T.

Furthermore, a pulse signal is output from the circuit 14 at predetermined time intervals when the recording/reproducing device 3 is driven, and this signal is supplied to a pilot signal forming circuit 21 consisting of an amplitude modulator with a carrier frequency of 7 kHz, and this output signal is sent to the mixing circuit 16. supplied to

Furthermore, the reproduction signal from the reproduction head _HP of the recording/reproduction device 3 is supplied to a low-pass filter 22 of 6 kHz or less and a low-pass filter 25 of 4 kHz or less,
These filter outputs are supplied to a switch circuit 26. This switch circuit 26 is the circuit 14.
This output signal is controlled by the signal from amplifier 1.
8 to the speaker 6. The reproduced signal is also supplied to a 7kHz bandpass filter 23,
This filter output is supplied to circuit 14. Furthermore, the filter output of the filter 25 is supplied to the mixing circuit 16.

In addition, the “1” in the code signal from the circuit 14 is
Hz, "0" is converted into a 300Hz tone burst signal and this signal is output with a carrier frequency of 5.5kHz.
The modulated output is supplied to the mixing circuit 16. A muting signal from the circuit 14 is also supplied to the amplifier 17.

Furthermore, the playback signal from the recording/playback device 3 is 5.5kHz.
the amplitude demodulator 2 through the bandpass filter 28 of
9, and this demodulated output is supplied to circuit 14. Note that the circuit 14 converts the 600 Hz signal in the demodulated signal into a "1" code signal and the 300 Hz signal into a "0" code signal.

Also, signals from switches 4 and 5 are supplied to circuit 14. The signal from this circuit 14 is then supplied to the system control circuit 19 of the recording/reproducing device 3.

In this device, an audio signal from a microphone 7 is band-limited to 6 kHz or less by a filter 20 and then supplied to a mixing circuit 16. Then, when the user presses the record switch in the switch 4, this signal is supplied to the processing circuit 12.
A command from the processing circuit 1 is supplied to the control circuit 19 to put the recording/reproducing device 3 into the recording mode.
2, a pilot signal is formed at intervals corresponding to the recording time of one page of code signals, this signal is modulated into a 7kHz tone signal, and this signal is supplied to the mixing circuit 16 and mixed into the audio signal. .
This mixed signal is recorded by the recording/reproducing device 3.

Audio signals are recorded in this way.

Furthermore, when the above-mentioned recorded tape is rewound and the playback switch of the switch 4 is pressed, this signal is supplied to the processing circuit 12, and a command from the processing circuit 12 is supplied to the control circuit 14, and the recording/playback device 3 is put into playback mode. When the audio signal is being reproduced, this reproduced signal is emitted from the speaker 6, and a pilot signal is separated and detected by the processing circuit 12.

While listening to this reproduced sound, text is input using the keyboard device 1. This key input is applied to the processing circuit 12.
and stored in the memory 15 through the circuit 14.

And the text entered from keyboard device 1 is
When the 40th line is reached or the user presses a predetermined switch in the switch 5, this signal is supplied to the processing circuit 12, and the code signal stored in the memory 15 is transferred to the memory 24 according to a command from the processing circuit 12. Transferred instantly. Furthermore, when a pilot signal is detected in this state, the code signals stored in the memory 24 are read out in order, and this signal is converted into 300Hz and 600Hz tone signals, which are then amplitude modulated with a 5.5kHz carrier wave and mixed. is supplied to circuit 16. On the other hand, the reproduced signal is band-limited to 4 kHz or less by the filter 25, and is supplied to the mixing circuit 16, where it is mixed with the modulation signal of the code signal. This mixed signal is supplied to the recording/reproducing device 3. At this time, processing circuit 1
The command from 2 is supplied to the control circuit 19, and the recording/reproducing device 3 is put into re-recording mode. Also, at this time, immediately before reading from the memory 15, the processing circuit 12
A header code signal including a predetermined synchronization signal, page number, etc. is supplied to the recording/reproducing device 3 and recorded. Note that when recording the above-mentioned code signal, the audio signal is muted in the amplifier 11 according to a command from the processing circuit 12.

In this way, the code signal is recorded.

Furthermore, when the above-mentioned recorded tape is rewound and the playback switch of the switch 4 is pressed, this signal is supplied to the processing circuit 12, a command from the processing circuit 12 is supplied to the control circuit 19, and the recording device 3 is activated. Put into play mode. The reproduced signal is then supplied to the filter 28 to separate the modulated signal of the code signal, and this signal is demodulated and supplied to the processing circuit 12. Furthermore, when the above-mentioned header code signal is reproduced, the code signal is read into the memory 15 immediately after this. Further, when the header code signal is reproduced, the switch 26 is changed by a command from the processing circuit 12, and the signal whose band is limited to 4 kHz or less by the filter 25 is emitted from the speaker 6.

Furthermore, part of the code signal stored in the memory 15 is supplied to the display device 2 through the processing circuit 12 and displayed. Here, since the display device 2 can display only one line of 40 characters, each line is displayed in half. For example, keyboard device 1
When inputting from , the characters that make up the first or second half of the line being input are displayed. Further, when the code signal from the recording device 3 is being read into the memory 15, the characters forming the first half of each read line are displayed.

Furthermore, when a predetermined switch of the switches 5 is pressed, the first half or the second half of an arbitrary line stored in the memory 15 is displayed. In this state, the user can use the switch 5 and the keyboard device 1 to make corrections to the text. Note that the operation using this switch 5 is equivalent to that of a conventional word processor.

The code signal recorded in this recording device is then supplied to a printer device or the like to create a document or the like.

This is how a word processor is configured.According to the present invention, an audio signal can also be recorded on a recording medium that records a code signal, and an audio signal and a code signal can be recorded on the same recording medium. Therefore, the amount of recording media consumed can be extremely reduced.

Although the above-described embodiments have been described using a cassette tape as the recording medium, the present invention is equally applicable to cases where other recording media such as disk-shaped recording media are used.

Furthermore, the modulation and demodulation of the code signal by the modulator 27 and demodulator 28 is not limited to the above-mentioned amplitude modulation, but may also be frequency modulation.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing the operating section of the apparatus according to the present invention, and FIG. 2 is a system diagram showing the internal configuration. 1 is a keyboard device, 2 is a display device,
3 is a recording device, 6 is a speaker, 7 is a microphone, 12 is a central processing circuit, 15 and 24 are memories,
20, 22, 25 are low pass filters, 21 is a pilot signal forming circuit, 23, 28 are band pass filters, 26 is a switch circuit, 27 is a modulator,
29 is a demodulator.

Claims (1)

[Claims] 1. A keyboard device, a signal processing circuit that converts key input from the keyboard device into a predetermined code signal, a modulator that converts this code signal into a tone signal in a band corresponding to the high frequency components of audio, and an audio signal. an input/output circuit, a mixing circuit that mixes at least the output of the modulator and the output of the input/output circuit, and a recording and reproducing device that records the output of the mixing circuit on a recording medium, and the recording and reproducing device In this state, the high-frequency component is removed from the reproduced signal to reproduce the audio signal, and the code signal generated by the operation of the keyboard and the reproduced audio signal are mixed and recorded on the recording medium. A word processor that allows re-recording.