JPH07111071A - Reproducing device - Google Patents

Abstract

PURPOSE:To take a necessary measure for the time of a battery exchange or of a battery charging or for an error by displaying the driving time of a recording medium after the exchange of a battery and the voltage value of the battery on the display device of a remote control part and also displaying an error generation on the display part when a communication error is generated. CONSTITUTION:In a case that a main body part 1 is in a stand-by state and when a head-phone plug 15 is inserted into a head-phone jack 14, both a PLAY key 12b and a STOP key 12c of the remote operating part 12 of a remote control part 2 are kept depressing. Then, when a power source is supplied from the main body part 1 to the remote control part 2, a remote mini-computer control part 11 also begins its operation and recognizes simultaneous depressions of the PLAY key 12b and the STOP key 12c to display various displays on a liquid crystal display panel 13. For example, a time during which the recording medium is driven after the battery is exchanged and the voltage value of the battery can be displayed. Further, the error generation is displayed on the display panel 13 when the communication error is generated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headphone stereo cassette player or the like, and relates to a relatively small and portable reproducing apparatus for reproducing a cassette tape and listening through the headphones.

[0002]

2. Description of the Related Art In recent years, a relatively small stereo cassette player having the same size as a cassette tape case and a thickness of about 3 cm has become popular. Since this stereo cassette player is of a size that can be carried in a pocket of clothes or the like for portable use, its popularity is remarkable in terms of fashion.

Particularly, in recent years, a so-called remote controller (remote control device) for controlling the operation of the main body of a cassette player and a headphone is provided on a cord for connecting the headphone. When such headphones with a remote controller are used, operations such as playback, fast forward, rewind, and stop of the main body are controlled by operating the remote controller with the cassette player main body stored in a bag or a clothes pocket. Can be convenient. Further, there is a remote controller provided with a liquid crystal display panel for displaying the operating state of the main body.

[0004]

The so-called liquid crystal remote control type headphone stereo cassette player described above has some problems. First of all, in order to display / confirm the operation state of the main body by the liquid crystal panel on the remote controller, the communication system between the cassette player main body section and the remote controller section becomes a problem, and the operation signal sent from the remote controller section to the main body section becomes a problem. Many communication lines are required in addition to the audio signal line, such as an operation signal sent from the main body to the remote controller and a power supply and ground line sent from the main body to the remote controller.

Secondly, in the exchange of communication data between the cassette player main unit and the remote control unit, as the content to be displayed increases, the transmission / reception control of the communication data becomes complicated, and accurate data transmission / reception is possible. It gets harder.

Thirdly, when the above-mentioned data transmission / reception cannot be performed correctly, or when a trouble occurs in the operation of the main body, a display is provided to inform the operator who is the listener of the abnormal state. There is a need.

Fourthly, since a headphone stereo cassette player mainly uses a rechargeable battery, it is very inconvenient for the operator if the usage time and the reduced power display, which are indicators of the charging time, are not displayed. .

Fifth, from the manufacturer's point of view, the function of inspecting the display state of the liquid crystal panel in the inspection stage after the manufacture of the cassette player, the advertisement function of using the liquid crystal display panel at the point of sale of the product, and the cassette A demonstration function or the like for advertising the operating state and function of the player to the customer is required.

Sixth, from the standpoint of the manufacturer and the seller, a so-called self-check function that can efficiently inspect the operating state of the cassette player is required.

The present invention solves the above problems and allows the manufacturer to
It is an object of the present invention to provide a playback device that is easy to use for sellers and operators.

[0011]

The present invention comprises a reproducing means for reproducing a recording medium on which an audio signal is recorded, a driving means for driving the recording medium, and a plurality of key switches.
A main body including a first operation means for instructing and inputting operation states of the reproducing means and the driving means; headphone that is detachably connected to the main body by a signal line and acoustically outputs a sound signal from the reproducing means; Second operation means detachably connected to the main body by a communication line provided in parallel with the signal line, comprising a plurality of key switches, for instructing and inputting operation states of the reproduction means and drive means of the main body,
A remote control unit including a display unit for displaying an operation state of the main body, wherein the main body is initialized when a battery for supplying power to the main body is mounted, and clocks the time when the recording medium is driven. And a voltage detection unit that detects the voltage of the battery, and displays the time measurement result of the time measurement unit and the voltage value detected by the voltage detection unit on the display unit of the remote control unit. .

Further, the present invention comprises a reproducing means for reproducing a recording medium on which an audio signal is recorded, a driving means for driving the recording medium, and a plurality of key switches. By a main body including a first operation means for inputting instructions, a headphone which is detachably connected to the main body by a signal line and which acoustically outputs an audio signal from the reproducing means, and a communication line which is provided in parallel with the signal line. Remote control detachably connected to the main body, comprising a plurality of key switches, including second operation means for instructing and inputting operation states of the reproduction means and drive means of the main body, and display means for displaying operation states of the main body side Part and
The main body includes an error detecting unit that detects an abnormal state of an operating state, and a transmitting unit that responds to an output of the error detecting unit and transmits an error signal to a remote control unit, and the remote control unit is a communication line. Reproduction including communication error detection means for detecting a communication error, and display control means for performing a display in response to an output of the communication error detection means or an error signal from the main body to notify the occurrence of the error to the display means It is a device.

[0013]

According to the invention, the time when the recording medium is driven after the battery is replaced and the voltage value of the battery is displayed on the display means of the remote controller. As a result, the operator can easily know the state of the battery in the main body, and can easily determine when to replace the battery or when to use the rechargeable battery.

Further, according to the present invention, when the operation state becomes abnormal on the main body side or when a communication error occurs in the communication line, the display means of the remote control section is provided with a display for notifying the occurrence of the error. Done. As a result, the operator can immediately recognize the occurrence of the error and can perform the corresponding process.

[0015]

1 is a block diagram showing the structure of a reproducing apparatus according to an embodiment of the present invention, and FIG. 2 is an external view of the reproducing apparatus. In the present invention, the reproducing apparatus is a so-called headphone stereo cassette player in which the compact cassette tape is reproduced and the listener listens to the reproduced audio signal through the headphones 10.

The reproducing apparatus comprises a main body 1 and a remote controller 2 which is a remote controller. The main body unit 1 includes an audio unit 3, a mechanism unit 4 serving as a driving unit, a main body control unit 5, a tuner unit 6, a main body operating unit 7 serving as a first operating unit, and a reproducing unit 8 serving as a reproducing unit. Is the main volume 9, headphones 10, remote controller 11, second
It is composed of a remote control operation unit 12 and a liquid crystal panel (LCD) 13 which are operation means. The main body 1 and the remote controller 2 are electrically connected by inserting the headphone plug 15 into the headphone jack 14.

Generally, as shown in FIG. 1, the main body 1 and the remote controller 2 are provided with three audio signal lines L1, L2, L3 for the right channel, the left channel, and the common, and for supplying power. Although the lines are connected by a total of six lines including three control lines for ground and control signals, the present invention uses the same line L5 for power supply and control signal to provide the ground line L4. In total, the lines are connected by a total of five lines L1 to L5.

The audio section 3 comprises a preamplifier 31, a Dolby circuit 32, a volume 33, a power amplifier 34, an equalizer circuit 35 and an output circuit.
The mechanical unit 4 includes a motor 41, a governor 42, and a solenoid 4
3, a mechanical switch 44, a tape running detection circuit 45, and a tape detection circuit 46.

The main body control section 5 includes an I / O circuit 50, an audio control section 51, a mechanism control section 52, and radio data I / O.
Circuit 53, equalizer control unit 54, operation sound / confirmation sound output circuit 55, LCD data processing circuit 56, integrated time detection circuit 57 which is a time measuring means, voltage detection circuit 58, LCD data output circuit 59, and key input processing / judgment. It is configured to include the unit 60.

The audio section 6 comprises a 1.5-3V level shifter 61, a synth microcomputer 62, and an LCD 63.

The main body operation section 7 has a HOLD key 7a for instructing a temporary stop of the reproducing operation of the magnetic tape, a PLAY key 7b for instructing the start of reproducing the magnetic tape, and a STOP key for stopping the running operation of the magnetic tape. 7c and FF / REW key 7d for instructing fast forward / rewind of magnetic tape
It is configured to include and. The reproducing section 8 includes a magnetic tape 81 and a reproducing head 82.

The remote controller control section 11 includes an I / O circuit 91,
Operation signal processing circuit 92, LCD data processing circuit 93, L
It is configured to include a CD driver 94 and a key input processing / determination unit 95.

The remote controller operating section 12 has a HOLD key 12a for instructing a temporary stop of the magnetic tape reproducing operation, a PLAY key 12b for instructing a magnetic tape reproducing operation, and a STOP key for instructing the magnetic tape traveling operation to stop. 12
c and FF / R to instruct fast forward / rewind of magnetic tape
An EW key 12d, a sound quality switching key 12e for instructing a sound quality switching of a reproduced audio signal at the time of reproducing a magnetic tape, and a mute key 12f for instructing a muting operation at the time of reproducing a magnetic tape.

FIG. 3 is a plan view showing the structure of the display screen of the liquid crystal panel 13 provided in the remote controller 2. The liquid crystal panel 13 has a plurality of display areas (lighting areas) 71, 7
2, 73, 74a to 74l, 75a to 75b, 76, 7
7a to 77c and 78a to 78c are set.

The display areas 71 to 73 are provided on the main body 2 with the battery B.
It is turned on when displaying the accumulated time in which the magnetic tape 81 has been driven after the T has been mounted and the power reduction information of the voltage of the battery BT. The display areas 74a to 74l are turned on to notify the occurrence of an error in the main body 1. Display area 7
5a and 75b are lit up when the magnetic tape 81 is fast-forwarded and rewound, respectively. The display area 76 is HOLD.
It is turned on when the keys 7a and 12a are operated to set the reproduction of the magnetic tape to the paused state. Display area 77a-
Reference numeral 77c indicates the reproduction mode of the magnetic tape 81, that is, which one of the reproduction mode is set, that is, the reproduction of one side only, the reproduction of both sides only by auto reverse, or the continuous reproduction of both sides by auto reverse (endless mode). It is lit. The display areas 78a to 78c are turned on when setting a demonstration mode, which will be described later.

FIG. 4 is a circuit diagram showing a configuration related to data communication between the main body 1 and the remote controller 2. Display data of the LCD 13 and the like are transmitted from the main body unit 1 to the remote control unit 2, and input signals input from the remote control operation unit 12 are transmitted from the remote control unit 2 to the main body unit 1, so-called bidirectional communication. Further, the main body 1 and the remote controller 2
The communication line that connects the
Also serves as a power supply line to the.

The power supply voltage is supplied from the 3V line of the main body 1 to the remote controller 2 via the resistor 25.
The power supply line L5 is unstable as a power supply line because a pulse signal between 3V and 0V is transmitted during communication. Therefore, the power supply voltage is supplied to the remote controller control unit 11 by the power supply voltage stabilized by the Schottky diode 26 and the capacitor 27. The power supply voltage is applied to the VDD terminal of the remote controller control unit 11, the remote controller operation unit 12, and the VDD terminal of the reset IC 28.

When data is transmitted from the main body control section 5 of the main body section 1 to the remote control section 11, a pulse signal is output from the output terminal 33 of the main body control section 5 and passes through the communication / power line L5 via the transistor 21. , The transistor 29 of the remote controller 2 is operated to be input to the input terminal 19 of the remote controller controller 11. When data is transmitted from the remote control unit 11 to the main body control unit 5, the remote control unit 1
The pulse signal is output from the output terminal 18 of the main unit 1, passes through the communication / power line L5 through the transistor 30, operates the transistor 22 of the main body unit 1, and is input to the input terminal 24 of the main body control unit 5.

Table 1 below shows the types of signals transmitted from the main body 1 to the remote controller 2 and an example of the bit configuration of the transmission signals. The types of signals include mechanical operation signals, reverse mode, sound quality switching, playback time, and other 5 types.
If there is a type, for example, "FWD PLAY state (playback state)", a 5-bit signal such as "00010" is transmitted.

[0030]

[Table 1]

Table 2 below shows the types of signals transmitted from the remote controller 2 to the main body 1 and an example of the bit configuration of the transmitted signals. There are four types of signals: data request, key operation, self-check, and mute. For example, the PL of the remote controller operating unit 12 of the remote controller 2 is used.
When the AY key 12a is pressed, a 3-bit signal having the content of "010" is transmitted to the main body controller 5 of the main body 1.

[0032]

[Table 2]

As described above, the communication between the main body 1 and the remote controller 2 is performed by only one of the communication / power supply line L5 which shares the power supply line and the communication line, and the transmission signals overlap each other. The following processing is performed so that there is no First, basically, the data are not transmitted when they are receiving each other. Therefore, it is more effective to send the data first. When an attempt is made to transmit an operation signal from the remote controller control unit 11 to the main body control unit 5 with a slight delay when data is transmitted from the main body control unit 5 to the remote control unit 11, the main body is connected to the input terminal 18 of the remote control unit 11. Since the data from the control unit 5 has been input, it waits for the operation signal to be transmitted until the input of the data is completed. An operation signal is transmitted from the remote controller control unit 11 to the main body control unit 5 after the reception of data from the main body control unit 5 is completed.

Similarly, in the opposite case, when the main body control unit 5 tries to transmit the display data to the liquid crystal panel 13 to the remote control unit 11, the operation signal has already been transmitted from the remote control unit 11 to the input terminal 24. If so, the display data is not transmitted until the input processing of the operation signal is completed. That is, in the main body controller 5 and the remote controller controller 11, when a signal is input to the input terminal, no signal is output from the output terminal. The remote control control unit 1 transmits the key reception prohibition cancellation signal shown in Table 1 above.
When the operation of the main body unit 1 is switched by processing the input signal from 1, the display data for the liquid crystal panel is newly stored in the transmission data buffer (not shown) and the display data is transmitted again to the remote controller control unit 11.

The playback device of the present invention is provided with a playback time display function. The reproduction time display function is the accumulated time in the main body control unit 5 as the accumulated time of each operation of reproducing, fast-forwarding and rewinding the magnetic tape 81 by the reproducing unit 8 after the battery BT is attached to the main body unit 1 in FIG. This is a function of measuring the time by the detection circuit 57 and transmitting a signal indicating the accumulated time from the main body control unit 5 to the remote control control unit 11 of the remote control unit 2 when a predetermined time is reached and displaying the content on the liquid crystal panel 13. The displayed contents are reset when the battery BT is removed from the main body 1 and the power is turned off.

For example, a case will be described in which the integrated times "1 hour" and "2 hours" and the power reduction information of the battery BT are displayed on the LCD 13. In the above-mentioned FIG. 4, only the display area 71 is lit in the initial state. When the accumulated time reaches 1 hour, the reproduction time 1H “10111” in Table 1 is displayed as LCD display data from the main body control unit 5 on the remote control unit 1.
1, the remote controller control unit 11 controls the LCD 13 based on the received LCD display data to turn on the display area 72 of FIG.

Similarly, when the integrated time reaches 2 hours, the reproduction time 2H "11000" shown in Table 1 above is transmitted from the main body controller 5 to the remote controller controller 11 as LCD display data, and the remote controller controller 11 receives it. The LCD 13 is controlled based on the LCD display data to turn off the display area 72 shown in FIG. 4 and turn on the display area 73.

Further, the voltage detection circuit 5 in the main body control section 5
When the voltage of the battery BT becomes 1.1V or less while the voltage detection function of 8 is set to 1.1V, the main body control unit 5 causes the reproduction time OP “11001” shown in Table 1 as LCD display data. Is transmitted to the remote control unit 11, the remote control unit 11 controls the LCD 13 based on the received LCD display data, and the display area 71 shown in FIG.
Blinking (flushing at 0.5 second intervals).

In this way, the reproduction time and the state of the battery BT can be displayed in six ways as shown in Table 3 below.

[0040]

[Table 3]

FIG. 5 is a flow chart for explaining the operation at the time of key input of the reproducing apparatus of the present invention. In order to operate the reproducing apparatus, it is necessary to perform a key input through the main body operation unit 7 of the main body unit 1 or the remote control operation unit 12 of the remote control unit 2. When operating the main body unit 1, the key switches 7a to 7d of the main body operation unit 7 are pressed to input the operation mode. At step a2, the input signal is judged by the key input processing / judgment part 60 in the main body control part 5, and if the operation mode is inputted, at step a3, another input signal is inputted until the key is inputted to become the operation mode. The key reception prohibition state is set so that the key reception is not accepted, and a key reception prohibition signal is transmitted to the remote control unit 11.

In step a4, the main body control section 5 controls the audio section 3, the mechanical section 4 or the tuner section 6 to start the operation corresponding to the input operation mode.
Then, in step a5, the corresponding operation is executed.

As for the reverse mode, sound quality, time, etc., the setting or calculation result is always stored and immediately output when a key is input.

When the operation of the main body 1 is started in step a4 described above, the operation status of the main body 1 is transmitted to the remote controller 2 as display data, and this display data is transmitted as group data. That is, group data transmission is started in step a6, and step a7
Then, the remote controller control unit 11 sequentially receives each signal data.
When the transmission of the group data is completed in step a8, the main body control section 5 transmits a key reception prohibition release signal to the remote control section 11 in step a9, and the remote control control section 11 receives the key reception prohibition release signal. The group data is determined, and the operation status of the main body unit 1 at that time is displayed on the liquid crystal panel 13 in step a10.

Similarly, in step a11, the key input switch 12 of the remote controller operating unit 12 in the remote controller 2
Similarly, when a to 12f are operated, the processes after step a2 are executed.

FIG. 6 is a flow chart for explaining a communication method from the main body 1 to the remote controller 2. 6 (1) shows the case of transmitting group data, and FIG. 6 (2) shows the case of transmitting a single signal other than group data.

Referring to FIG. 6 (1), group data is a communication method for sending a plurality of types of data from the main body 1 to the remote controller 2, and in step b1 the main operating unit 7 or the remote operating unit 12 has a key. When input, the main body unit 1 starts the corresponding operation, transmits a key reception prohibition signal to the remote control unit 11, prohibits key reception from the remote control unit, and operates the keys of the main body operation unit 7 of the main body unit 1. Reception is also prohibited.

In step b3, the group data transmission start signal "11110" is transmitted, and then the main body control unit 5
A plurality of data set therein and a signal indicating an operation mode corresponding to the input key are sequentially transmitted. That is, in step b4, the reverse mode signal is transmitted,
In step b5, the sound quality switching signal is transmitted, and step b
In step 6, a reproduction time signal is transmitted, in step b7, a signal indicating the operation mode corresponding to the input key is transmitted, and finally in step b8, a group data transmission end signal "11111" indicating completion of group data transmission.
Will be sent. Then, in step b9, the key reception prohibition cancellation signal "11011" is transmitted.

As described above, the remote controller control section 11 receives a group data transmission start signal, sequentially receives a plurality of data, and finally receives a group data transmission end signal to recognize that the transmission operation is completed. Prior to the transmission of this group data, the key reception prohibition signal “11010” is transmitted, and finally the key reception prohibition cancellation signal “1101” is transmitted.
1 ”is transmitted and during this time, the key input of the remote control unit 2 is prohibited. Upon receiving the key reception prohibition cancellation signal in step b9, the remote controller control unit 11 determines the received group data, and starts displaying the operation state of the main body unit 1 on the liquid crystal panel 13.

Referring to FIG. 6 (2), when a single signal is transmitted in addition to the group data described above, step b
11 transmits a single signal such as a sound quality switching signal, a reproduction time signal, an error display signal, an error display cancellation signal,
In step b12, a key reception prohibition cancellation signal is transmitted. The remote controller control unit 11 recognizes that data has been transmitted by receiving the key reception prohibition cancellation signal. For example, when the sound quality is turned off, the sound quality switching signal “10010” and the key reception prohibition cancellation signal “1” are set.
1011 ”is transmitted, and the remote controller control unit 11 determines the received signal and displays it on the liquid crystal panel 13.

As described above, since the remote controller control section 11 can receive a plurality of types of data collectively by the group data method, and the receiving process is such that the order of the data in the group data is predetermined. It will be easy. Further, when each data is transmitted from the start of transmission of the group data, the data transmission is interrupted midway, and the group data transmission end signal is not received, an error occurs.

FIG. 7 is a flow chart for explaining the operation of the reproducing apparatus which is an embodiment of the present invention. Step c1
When the remote control unit 2 is connected to the main body unit 1 while pressing the two keys of the remote control operation unit 12 at the same time, the main body unit 1 starts its operation and is initialized.

In step c2, the remote controller control section 11 transmits a data transmission request signal to the main body section 1 in order to have the main body section 1 transmit the operation status of the main body section 1 as display data. Receives the data transmitted from and makes a judgment. If the transmission data is an error in step c4, the process proceeds to step c11, and if it is normal data, the process proceeds to step c5.

At step c5, it is judged whether or not the main body 1 is in operation. Step c if running
6, the display according to the operation is displayed on the liquid crystal panel 13, and in this case, the demo mode and self-check mode described later cannot be entered.

When the main body 1 is stopped at step c5, it is determined whether the demo mode input or the self-check mode input is performed. That is, it is determined in step c7 whether the demo mode is input. That is, when the two keys pressed at the same time on the remote control operation part 12 are the PLAY key 12b and the STOP key 12c, step c8
Go to and enter demo mode. This demo mode will be described later.

If the demo mode is not input in step c7, it is determined in step c9 whether the self-check mode is input. That is, the two keys pressed simultaneously on the remote control operation unit 12 are the FF / REW key 1
2d and sound quality switching key 12e, step c10
Go to and enter the self-check mode. At this time, the remote controller control section 11 sends a self signal to the main body control section 5 of the main body section 1 to activate a self-check program described later.

When an error occurs in the data received in step c4, the process returns to step c2, and the data transmission request is again made to the main body 1. Step c1
If the error occurs 5 times in step 1, step c12
Then, the remote controller control section 11 displays an error message indicating a communication error on the liquid crystal panel 13. This error display will be described later.

Here, the demo mode executed in step c8 will be described. What is demo mode? Main unit 1
LCD panel 13 of remote control unit 2 when is not operating
In order to display a predetermined pattern in sequence, it is possible to check the display state of the liquid crystal panel and display advertisement at the time of exhibition at the store, and the usage is various.

The operation will be described in detail. The main body 1 is in a standby state, and when the headphone plug 15 is inserted into the headphone jack 14, the PLAY key 12b and the STOP key 12c of the remote control operation part 12 of the remote control part 2 are inserted.
When both are pressed, the power is turned off from the main unit 1 to the remote control unit 2.
When it is supplied to the remote controller control unit 11, the remote controller control unit 11 also starts to operate, recognizes the simultaneous pressing of the PLAY key 12b and the STOP key 12c, and causes the liquid crystal panel 13 to display a pre-programmed demo mode display. The display pattern in the demo mode is shown in FIG.
A wide variety of display patterns are conceivable, such as lighting up to 73 and 78c one by one, or lighting up all at the same time.

To cancel the demo mode, for example, S
Press the TOP key 12c. If the main body 1 is operated during execution of the demo mode, the remote controller 2 suspends the demo mode and causes the liquid crystal panel 13 of the remote controller 2 to display a display corresponding to the operation of the main body 1.

Next, the self-check mode will be described.
The self-check mode is for automatically performing a series of operations by executing an operation program incorporated in advance for the purpose of inspection without key input.

To explain the operation in detail, the main body 1 is in the standby state, and when the headphone plug 15 is inserted into the headphone jack 14, both the FF / REW key 12d and the sound quality switching key 12e of the remote controller 2 are simultaneously operated. When pressed, the remote controller control unit 11 starts operation when power is supplied from the main body unit 1 to the remote controller unit 2, and the FF / REW
Recognizing that the key 12d and the sound quality switching key 12e are pressed at the same time, the SELF signal "11" shown in Table 2 above is recognized.
0 ”is transmitted to the main body control unit 5. The main body control unit 5 is SE
When the LF signal is received, the self-check program is executed, and the operations shown in Table 4 below are sequentially and automatically executed.

[0063]

[Table 4]

As shown in Table 4, PLAY start (3
Seconds) and sound quality switching (1 second), the 13-step operation is automatically switched and executed without key operation. Even in the self-check mode, each operation state is displayed on the liquid crystal panel 13 of the remote controller 2, so that the operation of the main body 1 can be checked and the output can be checked using a test tape or the like. This makes it applicable to a wide variety of inspections such as performance measurement and operation check.

The self-check mode is released when either the STOP key 12c of the remote controller 2 or the STOP key 7c of the main body 1 is pressed.

Next, the error display will be described. The error display is intended to send a signal to the remote control unit 2 to cause the liquid crystal panel 13 to display an error when the main unit 1 cannot operate normally due to an abnormal operation of the mechanism unit 4. Further, the main body unit 1 tries to display the same display even when the signal is normally transmitted to the remote controller unit 2 even when the remote controller control unit 11 cannot receive the signal due to a communication line failure or the like. (Corresponding to step c12 described above).

When the main body unit 1 is in an abnormal state, the main body control unit 5 detects an abnormal operation of the mechanism unit 4, and the error display signal "11100" and the key reception prohibition release signal "11011" in Table 1 are sent. It is sent to the remote control unit 2,
The display pattern of the error display is lit on the liquid crystal panel 13 to inform the operator of the abnormality.

In the case of a data transmission / reception error between the remote control unit 2 and the main body unit 1, the remote control unit 11 first shows in Table 2 when the signal sent from the main body unit 1 cannot be determined due to a failure of the communication line or the like. As shown, the DATA request signal "001" for requesting the signal again is transmitted. Even when the normal signal from the main body unit 1 is not received within a predetermined period or within a predetermined number of times or the judgment cannot be performed again, the liquid crystal panel 13 is caused to light up the display pattern of the error display. At this time, the remote control unit 2 determines an error by an abnormal signal from the main body unit 1 and lights the error display pattern.

For the display pattern of the error display, refer to, for example, FIG. 4 described above. For example, when an error occurs, all 12 display areas 74a to 74l are turned on, and after 0.5 seconds, all are turned off. In addition, the operator can be informed by turning on the flashing state.
To cancel the error display state, for example, an initialization operation performed when the power is once shut off and then turned on again is performed. As described above, since the error detection unit is different, it is possible to display the display when the main body unit 1 is abnormal and when the transmission / reception error occurs in different display forms.

As described above, according to this embodiment, the first
In addition, the number of communication lines can be reduced by sharing the communication line and the power supply line in the communication line between the main body 1 and the remote controller 2. Secondly, the main body 1
The group data system can be used as a communication system between the remote control unit 2 and the remote control unit 2 accurately. Third
In addition, since an error is displayed on the liquid crystal panel 13 when an abnormality occurs, the operator can immediately confirm the error occurrence. Fourthly, since the accumulated time of the power reduction information of the battery BT and the reproduction time, which is the drive time of the magnetic tape, is displayed on the liquid crystal panel 13, it is necessary to charge the battery when the operator replaces the battery or when the battery is a rechargeable battery. It is possible to easily determine when to do. Fifth, since a predetermined display pattern is automatically displayed on the liquid crystal panel 13 in the demonstration mode, it is possible to check the liquid crystal panel 13 and to advertise on the liquid crystal panel at the store. Sixth, the self-check mode makes it possible to easily inspect the operation in the manufacturing stage. This makes it possible to provide a useful reproducing apparatus which is convenient and convenient for manufacturers, sellers and operators.

Although the magnetic tape reproducing apparatus has been described in this embodiment, an optical recording medium such as a compact disc or another recording medium may be used.

[0072]

According to the present invention, the display means of the remote control section displays the time when the recording medium is driven after the battery is replaced and the voltage value of the battery, so that the operator can check the battery level in the main body. The state can be easily known, and the time for battery replacement, or the time for charging when a rechargeable battery is used, can be easily determined.

Further, according to the present invention, when the operation state becomes abnormal on the main body side or a communication error occurs in the communication line, the display means of the remote control section is provided with a display for notifying the error occurrence. Since the operation is performed, the operator can immediately recognize the occurrence of the error and perform the corresponding process, and the operability and usability are improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing a basic configuration of a reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is an external view of a playback device.

FIG. 3 is a plan view showing a screen configuration of a liquid crystal panel 13 provided in the remote control unit 2.

FIG. 4 is a circuit diagram showing a configuration related to data transmission between a main body unit 1 and a remote control unit 2.

FIG. 5 is a flowchart illustrating an operation of the reproducing apparatus when a key is input.

FIG. 6 is a flowchart for explaining a communication method from the main body unit 1 to the remote control unit 2.

FIG. 7 is a flowchart explaining the operation of the reproducing apparatus of the present invention.

[Explanation of symbols]

 1 Main Unit 2 Remote Control Unit 3 Audio Unit 4 Mechanism Unit 5 Main Unit Control Unit 6 Tuner Unit 7 Main Unit Operation Unit 8 Playback Unit 10 Headphones 11 Remote Control Control Unit 12 Remote Control Operation Unit 13 Liquid Crystal Panel 14 Headphone Jack 15 Headphone Plug 7a, 12a HOLD Key 7b, 12b PLAY key 7c, 12c STOP key 7d, 12d FF / REW key 12e Sound quality switching key 12f Mute key 81 Magnetic tape 82 Playback head

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Claims (2)

[Claims] 1. A reproducing means for reproducing a recording medium on which an audio signal is recorded, a driving means for driving the recording medium, and a plurality of key switches, for instructing and inputting an operating state of the reproducing means and the driving means. A body including a first operation means, a headphone detachably connected to the body by a signal line, which outputs an audio signal from the reproducing means by audible conversion, and a communication line provided in parallel with the signal line, attachable to and detachable from the body A remote control unit which is operably connected and comprises a plurality of key switches, and which includes a second operation unit for instructing and inputting operation states of the reproduction unit and the drive unit of the main body, and a display unit for displaying the operation state of the main body side. The main body is initialized when a battery for supplying electric power to the main body is installed,
It includes a time measuring means for measuring the time when the recording medium is driven, and a voltage detecting means for detecting the voltage of the battery, and displays the time measuring result by the time measuring means and the voltage value detected by the voltage detecting means on the display means of the remote control section. A reproducing device characterized by: 2. A reproducing means for reproducing a recording medium on which an audio signal is recorded, a driving means for driving the recording medium, and a plurality of key switches, for instructing and inputting operation states of the reproducing means and the driving means. A body including a first operation means, a headphone detachably connected to the body by a signal line, which outputs an audio signal from the reproducing means by audible conversion, and a communication line provided in parallel with the signal line, attachable to and detachable from the body A remote control unit which is operably connected and comprises a plurality of key switches, and which includes a second operation unit for instructing and inputting operation states of the reproduction unit and the drive unit of the main body, and a display unit for displaying the operation state of the main body side. The main body includes an error detecting unit that detects an abnormal state of the operating state, and a transmitter that transmits an error signal to the remote control unit in response to the output of the error detecting unit. The remote control unit includes a communication error detection unit that detects a communication error in the communication line, and a display that responds to an output of the communication error detection unit or an error signal from the main body and notifies the display unit of the occurrence of the error. A reproducing apparatus including a display control means for performing the operation.