JPS6370952A - Cassette tape deck - Google Patents

Abstract

PURPOSE:To display the direction in which a tape starts to run by blinking a display lamp in directions of fast forwarding (FF)/rewinding (RW) and PLAY coincide with each other, but if the directions of FF/RW and PLAY differ from each other, display lamps of the respective directions are blinked or lighted on. CONSTITUTION:If the power supply is turned ON, a tape running direction detecting circuit 15 while playing detects the running direction; since there is no input from a detection circuit 16, switch circuits 14a, 14b outputs to lighten either display lamp 11a or 11b via diodes 13a or 13b to display the running. If an instruction for the operation of FF or RW is issued by the deck controller, an FF/REW action switch 17 turns ON, and a signal is transmitted to FF/REW tape running direction detecting circuit 16 to detect the running direction to the right-hand side or left-hand side direction. Thus obtained detection signal is transmitted to blinking circuit 12a, 12b and the switch circuits 14a, 14b, and blinking output signals are outputted from either the circuit 12a or the circuit 12b, to turn on in blinking either the running display lamp 11a or 11b.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cassette tape deck, and particularly to an operation display thereof.

[Conventional technology]

Figure 2 shows the structure of the control system of a conventional cassette tape deck. In the figure, 1 is the deck main body, 2 is the deck control section, 3 is the operation section, 4 is the display section, 5 is the tape running detection circuit,
6 is a tape running direction detection circuit during tape play; 7 is a tape running direction detection circuit during fast forwarding and rewinding.

In the above configuration, input is given to the deck control section 2 by operating the switch of the operation section 3 from the outside. The deck control section 2 makes a judgment in combination with the inputs from the tape running detection circuit 5 and the tape running direction detection circuits 6 and 7, and gives a deck main body IK operation command. On the other hand, a signal is sent from the deck body 1 to the display section 4 based on the signals passed through each of the detection circuits 5 to 7 and the operation input signal. The display section 4 displays the operational status of the deck main body 1 to the outside based on the signal from the deck control section 2.

FIG. 3(a) shows an example of a conventional tape running display, in which 1 is a left running direction indicator lamp during play;
2 is the fast forward/rewind operation indicator lamp, 3 is the performance (play)
On the right side driving direction indicator lamp, operating raw metal lamps 1 to 3
I'm trying to light it up.

Further, in FIG. 3(b), the fast-forward operation and the rewind operation are indicated by separate lamps 2-1 and 2-2.

In addition, in Fig. 3(c), lamps 1 and 3 indicate the tape running direction during performance, and lamps 1 and 3 flash when the tape is running during fast forwarding (FF) or rewinding (REW). It was showing the direction.

[Problem that the invention seeks to solve]

However, in the conventional device described above, Fig. 3(a)
In Figure 3(b), 4 lamps are required.
I needed one. Also, in Fig. 3(c), the direction of travel can be displayed using two lamps, but if you stop midway in the fast forward 9 or rewind state and enter the playing state, you will not know which direction the playing direction is. It was not possible to determine whether this was the case just by looking at the lamp display. That is, when the lamp is blinking, it indicates the direction in which the tape is running, but when the next time the playing state is entered, there is a problem in that the direction in which the tape is running is not displayed.

This invention was made to solve the above problems, and when only two indicator lamps are used, the tape running direction during performance, fast forwarding, rewinding, and To provide a cassette tape deck capable of displaying the direction in which the tape starts traveling when the operation is stopped midway during fast forwarding or rewinding and put into a playing state.

[Means for solving problems]

The cassette tape deck according to the present invention receives and displays the output of the tape running direction detecting circuit during fast forwarding and rewinding, in addition to the tape running direction detecting circuit during performance and the tape running direction detecting circuit during fast forwarding and rewinding. It is equipped with a blinking circuit that generates a blinking signal to the lamp, and a switch circuit that transmits the output of the tape running direction detection circuit during performance to the display lamp when there is no output from the tape running direction detection circuit during fast forwarding and rewinding. be.

[For production]

In this invention, when the fast-forwarding or rewinding direction matches the playing direction, the indicator lamp for that direction is blinked,
If the fast forward or rewind direction and the playing direction are different,
Flash or light the indicator lamps in each direction.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. 1st
In the figure, reference numeral 15 has a contact point that switches according to the state of the tape running direction during performance, and a tape running direction detection circuit during performance that switches in accordance with the running direction of the tape, and 16 indicates the running of the tape during fast forwarding and rewinding. Tape running direction detection circuits 12a and 12b during fast forwarding and rewinding, which have contacts that switch according to the direction state and switch in accordance with the running direction of the tape.
A blinking circuit 14a generates a blinking signal when a signal is input from the tape running direction detection circuit 16.

14b does not output when there is an input signal from the detection circuit 16, and when there is no input signal from the detection circuit 16 and the detection circuit 1
When there is an input from 5, the reverse current blocking diode 13a,
A switch circuit 13b outputs an output to the running direction indicator lamps 11a and 11b, 17 is a fast-forward and rewind operation switch that is turned on during fast-forward and rewind, and 18 is a deck motor power supply circuit.

In the above configuration, when the stain source is turned on by the deck motor source circuit 18, the tape running direction detection circuit 1 during performance
5 detects whether the vehicle is traveling on the right or left side, and the detection circuit 16
Since there is no input from the switch circuits 14m and 14b, the indicator lamp 11a is output via the reverse current blocking diodes 13a and 13b.

11b is turned on to display driving. Also, when a fast forward or rewind operation instruction is issued from the deck control, the fast forward or rewind operation switch 17 is turned on, and a signal is sent to the tape running direction detection circuit 16 during fast forward or rewind, and the tape running direction detection circuit 16 determines whether the tape is running to the right or left. The direction of travel is detected. This detection signal is transmitted to the blinking circuits 12a, 12b and the switch circuit 1.
4a.

14b. For this reason, the blinking circuit 12a.

A blinking output signal is output from one of the display lamps 12b, and one of the travel indicator lamps lla and llb blinks.

Next, the operating states of the indicator lamps lla and llb are summarized in Table 1.

Table 1 Note that the deck control section 2 shown in FIG. This changes when the tape ends and is not automatically reversed, but the tape running direction does not change even if you give fast forward or rewind instructions. Therefore, the deck control section 2 stores the direction in which the tape runs when the fast-forward/rewind state is stopped halfway and the play state is changed. Therefore, with this memory, the playing tape running direction detecting circuit 15 can detect the playing direction even during fast forwarding and rewinding operations.

Furthermore, although the above embodiments have been explained using circuit blocks, it is also possible to simplify the circuit by using a microcomputer controller or the like. Furthermore, although both lighting and flashing are used for the travel display, lighting and flashing may be distinguished by changing the number of flashes.

〔Effect of the invention〕

As described above, according to the present invention, the tape running display can be
It is possible to display the tape running direction during fast forwarding and rewinding and the running direction mode during performance at the same time, and a reduction in cost can be expected due to the reduction in the number of display lamps.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the operation display mechanism of the cassette tape deck according to the present invention, Fig. 2 is a block diagram of the control system of a conventional cassette tape deck, and Figs. 3 (a) to (c) are conventional tape running displays. FIG. 11a, 1lb...indication lamp, 12a
, 12b... Flashing circuit, 14a, 14b... Switch circuit, 15... Tape running direction detection circuit during performance, 1
6...Tape running direction detection circuit during fast forwarding and rewinding, 17
...Fast forward/rewind operation switch. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (2)

[Claims] (1) A tape running direction detection circuit during performance that detects the tape running direction during performance, a fast forward/rewind operation switch that is turned on when fast forwarding or rewinding, and a tape running direction detection circuit that detects the tape running direction when the fast forward/rewind operation switch is on. Leftward and rightward flashing that generates blinking signals when traveling leftward and rightward, respectively, in response to the outputs of the tape running direction detection circuit during fast forward and rewinding and the tape running direction detection circuit during fast forwarding and rewinding. circuit, and leftward and rightward switch circuits that receive and output the leftward running signal and rightward running signal of the tape running direction detecting circuit during performance when there is no output from the fast forward/rewinding tape running direction detecting circuit. and a left direction driving indicator lamp that blinks in response to the output of the left direction flashing circuit and lights up in response to the output of the left direction switch circuit, and a left direction driving indicator lamp that blinks in response to the output of the right direction flashing circuit and lights up in response to the output of the right direction flashing circuit. A cassette tape deck characterized by being equipped with a rightward running indicator lamp that lights up in response to an output from a switch circuit. (2) When the playing direction is on the left and the player is performing fast-forward operation (traversing to the left), only the indicator lamp for leftward travel will flash; when the playing direction is to the left and the player is rewinding (traversing to the right), the indicator lamp for leftward travel will flash. The display lamp for running to the right lights up and the indicator lamp for running to the right flashes, and if the playing direction is on the right and the rewind operation is in progress (running to the left), the indicator lamp for running to the left blinks, the indicator lamp for running to the right lights up, and the playing direction is set to the right. 2. The cassette tape deck according to claim 1, wherein only the rightward running indicator lamp blinks during fast forward operation (rightward running) on the right side.