JPS634222B2 - - 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 the characters that have been written, 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.

In this case, if the amount of recording medium consumed when recording an audio signal is made equal to the amount of recording medium consumed when converting that audio signal into a code signal and recording it, it is possible to This is more suitable for cases where conversion into code signals is performed sequentially.

That is, if the code signal is recorded in units of, for example, one page (80 characters x 40 lines), the time required to dictate this one page is approximately one minute. Therefore, the code signal for one page described above is recorded on the recording medium for one minute of the audio signal.

However, in this case, if the recording and reproducing time for each page of code signals is set to 1 minute, it is not preferable because a very long time is required to read and write the coded text.

In view of these points, the present invention has been made to enable efficient operation of the apparatus as described above. 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 memory 15 is connected through this circuit 14.

Further, the signal from the circuit 14 is supplied to the recording/reproducing device 3 through the mixing circuit 16. In addition, in circuit 14, “1” in the code signal is 600Hz, and “0” is 300Hz.
The signal is converted into a tone burst signal and supplied to the recording/reproducing device 3. Further, the audio signal from the microphone 7 is supplied to the mixing circuit 16 through an amplifier 17 and a low-pass filter 20 of, for example, 6 kHz or less. Furthermore, a pulse signal is outputted from the circuit 14 at predetermined time intervals when the recording 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. A muting signal from the circuit 14 is also supplied to the amplifier 17.

Further, a reproduction signal from the recording/reproducing device 3 is supplied to the circuit 14 . In addition, in the circuit 14, the
A 600Hz signal is converted to a "1" code signal, and a 300Hz signal is converted to a "0" code signal. Also, the playback signal is from amplifier 1.
The signal is supplied to the speaker 6 through a low-pass filter 22 with frequencies below 8kHz and 6kHz. Also, the playback signal is 7k
Hz bandpass filter 23 and the output of this filter is supplied to circuit 14. Furthermore, a muting signal from circuit 14 is supplied to amplifier 12.

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.

Furthermore, the signal from the circuit 14 is supplied to the control circuit 24 of the recording medium driving motor M of the recording/reproducing apparatus 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.
A header code signal indicating that an audio signal has been recorded is supplied from 2 to the mixing circuit 16. Furthermore, a pilot signal is generated at intervals of one minute in the processing circuit 12, this signal is modulated into a 7 kHz tone signal, and this signal is supplied to the mixing circuit 16 to be mixed with 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 19, and the recording/playback device 3 is put into playback mode. When the header code signal indicating the above-mentioned audio signal is reproduced, the reproduced signal is emitted from the speaker 6, and the 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.
The signal is converted into a code signal and stored in the memory 15 via 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 signals stored in the memory 15 are read out in order according to instructions from the processing circuit 12. and is supplied to the recording/reproducing device 3. At this time, a command from the processing circuit 12 is supplied to the control circuit 19 to set the recording/reproducing device 3 to the recording mode, and a command from the processing circuit 12 is supplied to the control circuit 24 so that the rotational speed of the motor M is changed to the normal speed. be doubled. Also, at this time, just before reading from the memory 15,
A header code signal containing a predetermined synchronization signal, page number, etc. and indicating that a code signal is being recorded is supplied from the processing circuit 12 to the recording/reproducing device 3 and is recorded. Note that when recording the above-mentioned code signal, the audio signal is muted by the amplifier 17 according to a command from the processing circuit 12. Further, the reading speed of the code signal is such that the entire contents of the memory 15 can be read out in 30 seconds.

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 the command from the processing circuit 12 is supplied to the control circuit 19, which causes the recording device 3 to play back. be put into mode. Then, when the header code signal of the above-mentioned code signal is reproduced, the processing circuit 12
A command from the motor M is supplied to the control circuit 24 to control the motor M.
rotation is doubled. Then, the reproduced code signal immediately after this header code signal is read into the memory 15. Further, when the header code signal of the code signal is reproduced, the reproduced signal supplied to the speaker 6 is muted by the amplifier 18 according to a command from the processing circuit 12.

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 the time of recording the audio signal and the time of recording the code signal can be changed. Since the consumption of the recording medium is made equal, audio can be encoded easily and efficiently, and since the transport speed of the recording medium when recording and reproducing code signals is increased, reading and writing of code signals can be done in a short time. It can be done in time.

Note that the header code signal must be able to be read at both high speed and low speed, but with a normal central processing circuit, there is no problem even if the header code signal is about twice as fast.

Further, FIG. 3 is a system diagram showing an example of the motor control circuit 24. As shown in FIG. In the figure, a capstan C is rotated by a motor M, and a tape T is transported. The signal reproduced by the head H is then extracted through the reproduction amplifier 31. This reproduced signal is supplied to the circuit 14. This circuit 14 determines the content of the header code signal. Two voltage sources 32 and 33 are also provided, and a high voltage from the voltage source 32 and a low voltage from the voltage source 32 are supplied to the switch 34. This switch 34 is switched by a signal from the circuit 14. The voltage selected by this switch 34 is then supplied to the motor M through an amplifier 35.

Therefore, when the header code signal of the audio signal is reproduced, the voltage source 33 is selected by the switch 34, and when the header code signal of the code signal is reproduced, the voltage source 32 is selected. The running speed of the tape can be increased.

Note that the tape speed is set to be equal to the tape speed of a conventional tape recorder when recording and reproducing audio signals. Furthermore, since some wow and flutter does not pose a problem when recording and reproducing code signals, it is sufficient to design the apparatus based on the above-mentioned recording and reproducing of audio signals.

Further, although the above-described embodiments have been described using a cassette tape as the recording medium, the present invention can be similarly applied to cases where other recording media such as disk-shaped recording media are used.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the operating section of the apparatus according to the present invention, FIG. 2 is a system diagram showing the internal configuration, and FIG. 3 is a system diagram showing an example of the main parts. 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 is a memory, 20,
22 is a low pass filter, 21 is a pilot signal forming circuit, 23 is a band pass filter, and 24 is a motor control circuit.

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 recording device that records this code signal on a recording medium, an audio signal input circuit, and a signal processing circuit that converts the key input from the keyboard device into a predetermined code signal. means for recording on a recording medium;
The amount of movement of the recording medium when a predetermined number of code signals are recorded is approximately equal to the amount of movement of the recording medium when an audio signal dictating a sentence corresponding to the predetermined number of code signals is recorded. and a word processor in which the speed at which the recording medium is moved when recording the code signal is faster than the speed at which the recording medium is moved when the audio signal is recorded.