KR940005021Y1 - Separate type of data information displaying system - Google Patents

Abstract

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Description

Separate Character Information Display System of Cassette Player

1A is a three-dimensional schematic diagram of a character information display system of a conventional cassette player.

1B is a block diagram of the character information display system of the cassette player according to FIG. 1A.

Figure 2a is a three-dimensional schematic diagram of a character information display system separated by a wire from the main body of the cassette player according to the present invention.

FIG. 2B is a block diagram of a character information display system separated by a wire from the main body of the cassette player according to FIG. 2A;

Figure 3a is a three-dimensional schematic diagram of the character information display system wirelessly separated from the main body of the cassette player according to the present invention.

3B is a block diagram of a character information display system wirelessly separated from the main body of the cassette player according to FIG. 3A.

Figure 4 is a block diagram showing an embodiment of a cassette player body according to the present invention.

Figure 5a is a block diagram showing another embodiment of the cassette player main body according to the present invention.

Figure 5b is a block diagram showing another embodiment of the cassette player body according to the present invention.

Figure 6a is a block diagram showing an embodiment of a character information display system according to the present invention.

Figure 6b is a block diagram showing another embodiment of the character information display system according to the present invention.

* Explanation of symbols for main parts of the drawings

10, 100: main body 101, 102: equalizer

103: mode telephone unit 104 ~ 106: buffer amplifier

110: transmitter 111: L / R mixing and modulator

112: RF amplifier 20, 200: character information display system

201: filter unit 202: DC / DC converter

203: waveform shaping unit 204: system control unit

205: LCD control unit 206: LCD driving unit

207 LCD panel 210 Receiver

211 tuner 212 frequency converter

213: Detection and L / R separator LH, RH: Left, right head

LS, RS: Left, Right picker JA1, JA2: Jack

The present invention relates to a separate character display information display system of a cassette player in a device for reproducing voice information and text information recorded in separate areas on the same recording medium, and in particular, a cassette player main body and character information display. The system relates to a system that can be separated by wire or wireless.

In general, a character information display system records audio signals and text information separately on a two-channel stereo tape and each channel, and the audio signals recorded on the tape are reproduced by the first channel head and then output to a speaker and correspondingly. Refers to a system capable of displaying character information such as letters or numbers on a display device such as a liquid crystal screen or a monitor after reproducing character information such as letters or numbers.

Conventionally, the character information display system attached to the front of the cassette player as shown in FIG. 1 is disclosed in Korean Patent Application No. 89-17133 filed previously.

However, if two lines of 20 characters per line are to be displayed on a liquid crystal display (LCD) panel mounted on the character information display system 20, the basic LCD size and many peripheral circuits are used. Due to the medium size, there was a problem that is not suitable for mounting on a portable small cassette player.

In order to overcome the above problems, an object of the present invention is to provide a system capable of separating the main body for reproducing voice information and character information and the character information display system for displaying the character information.

Another object of the present invention is to provide a system capable of separating the main body for reproducing voice information and character information and the character information display system for displaying the character information by wire.

Still another object of the present invention is to provide a system capable of wirelessly separating a main body for reproducing voice information and text information and a text information table system for displaying the text information.

In order to achieve the above object, the present invention provides a cassette player having a main body for reproducing voice information and character information, and a character information display system for displaying the character information; The main body includes left and right heads for tracking the left and right tracks of the tape, and mode switching means for switching to a normal mode or a display mode for selectively outputting playback signals of the left and right heads. Detecting means for detecting the character information by the system, and control means for displaying the character information data output from the detecting means on the LCD panel, by first separating the main body and the character information display system using a jack; And attaching a transmitter to the main body, and attaching a receiver to the text information display system, thereby enabling wireless separation.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the separate character information display system of the cassette player according to the present invention.

FIG. 2A is a three-dimensional schematic diagram of the character information display system connected by wire with the main body of the cassette player, and FIG. 2B is a block diagram of the character information display system separated by wire with the main body of the cassette player according to FIG. 2A. At this time, the main body 100 and the character information display system 200 of the cassette player are separated by a jack.

FIG. 3A is a three-dimensional schematic diagram of a character information display system of a cassette player wirelessly separated by adding a transmitter 100 to a main body 100 of a cassette player and a receiver 210 to a character display system 200. FIG. Fig. 3 is a block diagram of a character information display system wirelessly separated from the main body according to Fig. 3A.

4 is a block diagram showing an embodiment of a main body in a cassette player according to the present invention.

According to FIG. 4, in the mono cassette player, the left and right heads LH and RH are connected to the first and second equalizers 102 and 102 which compensate for deterioration of a signal reproduced and transmitted by the head.

The input terminal of the first buffer amplifier 104 is commonly connected to the output terminal of the first equalizer 101 and the first switch SW1. The other fixed terminal b2 of the second switch SW2 connected to the output terminal of the second equalizer 102 is connected to the input terminal of the third buffer amplifier 106. An input terminal of the second buffer amplifier 105 is commonly connected to the other fixed terminal b1 of the first switch SW1 and the one fixed terminal a2 of the second switch SW2. The control signal output terminal of the mode switching unit 103 is connected to the control contacts of the first switch SW1 and the second switch SW2.

The output terminal of the first buffer amplifier 104 is connected to the right channel signal output terminal R of the right speaker RS and the jack JA1, and the output terminal of the second buffer amplifier 105 is connected to the left speaker ( LS) and the output terminal of the third buffer amplifier 106 to the left channel signal output terminal L of the jack JA1. In this case, the mono cassette player has a loudspeaker (RS) and a left speaker (LS), but the music signal is actually output in mono. When the jack JA1 is connected to the jack JA2 of FIG. 6a by wire, the main body 100 and the character information display system 200 are separated by wire.

Figure 5a is a block diagram showing another embodiment of the cassette player main body according to the present invention.

5a, in the stereo and cassette player, the first and second equalizers 101 and 102 are connected to the left and right heads LH and RH, and the output of the second equalizer 102 is shown. The first switch, which is a mono / stereo switching switch of FIG. 4, is connected to a third switch SW3 for switching the terminal under the control of the mode switching unit 103 according to a signal loaded on the left track, that is, text information or audio signal. The configuration other than the point without (SW1) is configured similarly to FIG. Here, the jack JA1 is connected to the jack JA2 of FIG. 6a by wire, and the main body 100 and the character information display system 200 are separated by wire.

FIG. 5B is a block diagram showing still another embodiment of the main body to which the transmitter is attached in the stereo cassette player having the structure of FIG. 5A.

5B, the left and right heads LH and RH are connected to input terminals of the first and second equalizers 101 and 102, and the outputs of the first and second equalizers 101 and 102 are connected. The terminals are connected to the input terminals of the first and second buffer amplifiers 104 and 105. The first input terminal of the L / R mixing and modulator 111 of the transmitter 110 is connected to the output terminal of the first buffer amplifier 104, and the second input terminal is connected to the output terminal of the second buffer amplifier 105. Connect. The input terminal of the RF amplifier 112 is connected to the output terminal of the L / R mixing and modulator 111, and the output terminal is connected to the aerial line ANT. Here, the main body 100 to which the transmitter 110 is added is wirelessly separated from the text information display system 200 to which the receiver 210 shown in FIG. 6B is added.

Figure 6a is a block diagram showing an embodiment of a character information display system according to the present invention.

According to FIG. 6A, the right channel signal input terminal R connected to the jack JA2 shown in FIGS. 4 and 5A is connected to the right speaker RS, and the left channel signal input terminal L is filtered. Connected to the input terminal of the unit 201, the ground terminal G is connected to the positive terminal of the power supply Vcc, and the output terminal is the filter unit 201, the system controller 204, the LCD controller 205, The power supply terminal of the LCD panel 207 is connected.

The input terminal of the waveform shaping unit 203 is connected to the output terminal of the filter unit 201 with the input terminal of the system control unit 204.

The control signal input terminal of the LCD control unit 205 is connected to the system control unit 204, the first control signal output terminal is connected to the LCD driving unit 206, and the second control signal output terminal of the LCD control unit 205. And a control signal output terminal of the LCD driver 206 to the LCD channel 207.

Figure 6b is a block diagram showing another embodiment of the character information display system according to the present invention.

According to FIG. 6B, a signal transmitted from the input terminal of the tuner 211 from the main body with the transmitter as shown in FIG. 5B is introduced through the aerial line ANT, and the output terminal of the tuner 211 is frequencyd. The input terminal of the converter 212 is connected. The input terminal of the detection and L / R separator 213 is connected to the output terminal of the frequency converter 212, the first output terminal is connected to the loudspeaker RS, and the second output terminal is connected to the fifth switch SW5. . In this case, the tuner 211, the frequency converter 212, the demodulator, and the L / R separator 213 correspond to the receiver 210.

The character information display system 200 has a RAM in addition to connecting the one fixed terminal a5 of the fifth switch SW5 to the left speaker LS and the other fixed terminal b5 to the filter unit 201. Same as 6a.

The operation of the separate character display system of the cassette player according to the present invention will be described in detail.

According to FIG. 4, when the main body 100 and the character information display system 200 of the cassette player are separated by wires as shown in FIGS. 2A and 2B, left and right heads LH and RH are shown. The first and second switches SW1 and SW2 are short-circuited to one fixed terminal a1 and a2 when the signal to be reproduced is a voice signal and amplified by the first and second buffer amplifiers 104 and 105. Is output through the left and right speakers (LS, RS).

On the other hand, when the signal reproduced from the right head RH is an audio signal and the signal reproduced from the left head LH is text information, the mode switching unit 103 switches to the display mode to switch the first and second switches SW1. , SW2 is short-circuited to the other fixed terminals b1 and b2, and the audio signal output from the first equalizer 101 is output to the left and right speakers LS and RS through the first buffer amplifier 104. . At this time, the left and right speakers LS and RS output a mono audio signal reproduced by the right head RH. In particular, the use speaker RS outputs an audio signal through the right channel signal output terminal R of the jack JA1. The character information output from the second equalizer 102 is passed through the third buffer amplifier 106 and through the left channel signal output terminal L of the jack JA1. The character information display system 200 shown in FIG. Is sent to.

Here, the mode switching unit 103 selects the display mode or the normal mode.

According to FIG. 5A, when the main body 100 of the cassette player and the character information display system 200 are separated by wires as shown in FIGS. 2A and 2B, the main body 100 is a dedicated stereo cassette player. In this case, when the audio-only tape is played back, audio signals are played back at the left and right heads LH and RH, and under the control of the mode switching unit 103, the third switch SW3 is connected to one fixed terminal a3. The audio signals of the L and R channels, which are short-circuited and amplified through the first buffer amplifier 104 and the second buffer amplifier 105, are output through the left and right speakers LS and RS.

On the other hand, in the case of a tape carrying character information, the audio signal recorded on the right track is reproduced by the right head RH and input to the buffer amplifier 104 via the equalizer 101.

In addition, the character information recorded on the left track is reproduced by the left head LH, and is switched to the display mono by the mode switching unit 103 to short-circuit the third switch SW3 to the other fixed terminal b3. The character information reproduced by the left head LH is output to the third buffer amplifier 106.

The audio signal output from the first buffer amplifier 104 is supplied to the right channel signal output terminal R of the jack JA1 and output to a speaker RS or earphone (not shown), and the third buffer. The character information output from the amplifier 106 is supplied to the left channel signal output terminal L of the jack JA1 and transmitted to the character information display system 200 of FIG. Here, the mode switching unit 103 selects the display mode or the normal mode.

According to FIG. 5B, as shown in FIGS. 3A and 3B, when the main body 100 and the character information display system 200 of the cassette player are separated wirelessly, the main body 100 is a dedicated stereo cassette player. If

When the audio-only tape is played back, left and right audio signals are output to the L / R mixing and modulator 111 through the first and second buffer amplifiers 104 and 105. In the L / R mixing and modulator 111, FM signals are mixed by mixing left and right channels, and then transmitted as RF signals 112 through an RF amplifier 112 as a radio frequency ANT. do.

In the case of the tape containing the text information signal, the voice signal loaded on the right track through the first buffer amplifier 104 and the text information loaded on the left track are L / R mixed through the first and second buffer amplifiers 104 and 105. And an output to the modulator 111.

In this case, the character information is an analog signal obtained by FSK modulation of binary data on the table, that is, information of "1" for 2.4kHz and information of "0" for 1.2kHz. The L / R mixing and modulator 111 modulates the voice signal of the right channel voice channel and the character information of the left channel and then outputs the FM signal to the RF amplifier 12. The RF amplifier 112 transmits the text information and voice signal of the FM-modulated left and right channels through an aerial line ANT as an RF signal.

FIG. 6A is a block diagram of one embodiment of a character information display system according to the present invention. As shown in FIG. 4 or FIG. 5A, a tape in which the main body 100 and the right track have voice signals, and the left track has character information. In one case, the right channel audio signal flowing through the right channel signal input terminal R of the jack JA2 is output through the right speaker RS, and the left channel flows through the left channel signal input terminal L. The channel character information is output to the filter unit 201, and the power supply Vcc connected to the ground terminal is supplied to the DC / DC converter 202.

The filter unit 202 removes the noise carried in the character information through a low pass filter (not shown).

The waveform shaping unit 203 is composed of a buffer and a transistor-transistor logic circuit (TTL). When the output signal of the filter unit 201 is a signal of 2.4 kHz, it is " 1 " An analog signal having a signal is shaped into a logic signal having a level of "high" or "low".

The system controller 204 controls the LCD control 205 and the LCD driver 206 to display the logic signal output from the waveform shaping unit 203 as a text signal on the LCD panel 207.

FIG. 6b is a block diagram of another embodiment of the character information display system according to the present invention. As shown in FIG. 5b, when the main body 100 and the information display system 200 are separated wirelessly, the main body 100 The RF signal transmitted from the transmitter 110 of the tuner is tuned to the appropriate channel signal in the tuner 211 through the antenna. The frequency converter 212 converts the RF signal into an intermediate frequency signal (hereinafter, referred to as IF) and separates the RM detection and the left and right channel signals from the detection and L / R separator 213. When the left and right channel signals are voice signals, the fifth switch SW5 is short-circuited to the fixed pin terminal a5 and the voice signals are output to the left and right speakers or earphones.

When the signal reproduced from the left head LH in the display mode is character information, the fifth switch SW5 is short-circuited to the other fixed terminal b5, and the filter unit 201 detects and detects the L / R separator 213. Removes noise from character information output from. The audio signal of the right channel is output to the right speaker RS or the left and right earphones. In the waveform shaping unit 203, the output signal of the filter unit 201 is shaped into a logic signal having a level of "high" or "low".

The system controller 204 controls the LCD controller 205 and the LCD driver 206 to output the signals output from the waveform shaping unit 203 as characters on the LCD panel 207. That is, the system control unit 214 initializes the character information display system 200 when the reproduction selection signal switched by the fifth switch SW5, that is, the character information is input, and then the LCD control unit 205 and the LCD driver 206. ) Is turned on to generate a character pattern from codes corresponding to the character information and display it on the LCD panel 207.

At this time, the DEC / DC converter 202 boosts the 1.5V voltage, which is the external power supply (Acc), to 5V to increase the width of the power supply voltage. The filter unit 201, the system control unit 204, and the LCD control unit 205 And the LCD panel 207. This uses a booster DC / DC converter 202 to cope with small cassette players to large cassette players. That is, when the voltage supplied to the DC / DC converter 202 is 5 V or less, the processing speed of the system control unit 204 is slowed down and the contrast of the LCD panel 207 is blurred.

Since the character information display system is separated and cannot supply the power supply voltage, the character information display system is supplied by the separated character information display system and is driven by the DC / DC converter 202.

As described above, the separate type character information display system of the cassette player according to the present invention separates the main body for reproducing sound and character information and the character information display system for displaying the character information by using a jack or by wire. By attaching the transmitter to the bone and attaching the receiver to the text information display system, the main body of the cassette player and the text information display system can be separated wirelessly.

In addition, the present invention develops 5x7 fonts of LCD into 16x16 fonts so that Korean, Chinese, Japanese, Arabic, etc. can be expressed, and thus the range of use of karaoke products and cassette translators for foreign language learning is expanded, and small cassettes can be used for cassette tapes. Is compatible with all sound products such as players, music centers, standard radio cassettes and DECK COMPONENTs.

Claims (14)

A cassette player having a reproducing means for reproducing voice information and text information recorded in a separate area on the same recording medium, and displaying the character information reproduced by the reproducing means separately from the cassette player and displaying on the screen; And voice and text information transmitting means for transmitting the voice information to a display device, wherein the text information is displayed on the display device. The voice and text information transmitting means selectively outputs the voice information and text information. And a mode switching means for outputting the voice information only to a cassette player or a mode switching means for outputting the voice information to a speaker and for switching to a display mode for displaying the text information on the display device. Cassette player, characterized in that the display device is separated by wire Ear separated character information display system. The display apparatus according to claim 1, wherein the display device includes detection means for detecting a digital signal after removing noise contained in character information, and control means for controlling display on the LCD panel of character information output from the detection means. And a separate character information display system of a cassette player. 3. The separate character information display system of a cassette player according to claim 2, wherein said display device further comprises boosting means for widening the width of the power supply voltage. A cassette player having a main body for reproducing voice information and character information and a character information display system for displaying the character information, wherein the main body has left and right heads for tracking left and right tracks of a tape. And mode switching means for switching to a normal mode or a display mode for selectively outputting the reproduction signal of the head, wherein the character information display system includes: detection means for detecting a noise in the character information and then detecting it as a logic signal; And a main body and the character information display system separated by a wire, including control means for generating a character pattern from the control signal output from the detection means and displaying the character pattern on the LCD panel. 5. A separate character information display system according to claim 4, wherein said character information display system further comprises boosting means for widening the width of the power supply voltage. 5. A separate character information display system according to claim 4, wherein said character information display system is supplied with constant voltage to said boosting means only in the display mode. 5. The apparatus according to claim 4, wherein said detecting means of said text information display system comprises: filter means for removing noise in text information transmitted from said main body, and waveform shaping for converting a signal output from said filter means into a square wave signal. And a means for displaying a separate character information of a cassette player. A cassette player having a main body for reproducing voice information and character information, and a character information display system for displaying the character information, the main body including left and right heads for tracking left and right tracks of a tape. And mode switching means for switching to a normal mode or a display mode for selectively outputting the reproduction signal of the head, wherein the character information display system includes: detection means for detecting a noise in the character information and then detecting it as a logic signal; The main body and the character information display system include detection means for detecting the control signal output from the detection means, and control means for generating a character pattern from the control signal output from the detection means and displaying the character pattern on the LCD panel. A separate character information display system of a cassette player, characterized in that it is separated wirelessly. 10. The separate character information display system according to claim 8, wherein said character information display system further comprises boosting means for widening the width of the power supply voltage. 9. A separate character information display system according to claim 8, wherein said character information display system supplies a constant voltage to said boosting means only in a display mode. 9. The apparatus of claim 8, wherein the detecting means of the text information display system comprises: filter means for removing noise in text information transmitted from the main body, and a wave for converting a signal output from the filter means into a square wave signal. A separate character information display system for a cassette player, characterized in that it comprises shaping means. A cassette player having a reproducing means for reproducing voice information and text information recorded in a separate area on the same recording medium, and displaying the character information reproduced by the reproducing means separately from the cassette player and displaying on the screen; And voice and text information transmitting means for transmitting the voice information to a display device, the text and text information transmitting means for modulating the voice information or text information. And a demodulating means for demodulating the modulated voice information and the text information outputted from the modulating means, wherein the cassette player and the display device are wirelessly separated. The display apparatus according to claim 12, wherein the display device includes detection means for removing noise on the character information and detecting the digital signal and controlling means for controlling the display on the LCD panel of the character information output from the detection means. Detachable character information display system of a cassette player, characterized in that. 13. The separate character information display system of a cassette player according to claim 12, wherein said display device further comprises boosting means for widening the width of the power supply voltage.