JPH075596Y2 - Audio equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to an audio device having a radio function and a tape reproducing function.

(B) Conventional Technology Conventionally, for example, as disclosed in Japanese Utility Model Laid-Open No. 57-118588, an audio device has been devised which is configured to switch to the radio side during fast forward and rewind of the tape. Normally, this audio device is configured such that the buttons for fast forward, rewind, eject and traveling direction switching are ejected independently or by simultaneous operation of the fast forward and rewind buttons. It suffices to switch to the radio side based on a switch or the like that detects the operation state of the fast-forward and rewind buttons.

However, recently devised, for example JP-A-60-13875
In the case where the traveling direction switching operation is performed by the simultaneous operation of the fast forward and rewind buttons as shown in Japanese Patent Publication No. 2 publication, when the switch for detecting the operation state of the fast forward and rewind buttons is provided as described above, Even when the direction was switched, there was a drawback that it switched to the radio side for a while.

(C) Problems to be solved by the invention In consideration of the above-mentioned drawbacks, the invention is directed to a fast-forwarding and rewinding operation in which the traveling direction switching operation is performed by the simultaneous operation of the fast-forwarding operation means and the rewinding operation means. Sometimes, switching to the radio side is possible, and switching to the radio side is prevented during the tape traveling direction switching operation.

(D) Means for Solving the Problems The audio device of the present invention is such that the state detecting means for detecting the operating states of the fast-forwarding operation means and the rewinding operation means and the reproduction output of the tape means are being selected, A delay means for delaying the output of the state detecting means is provided between the switching means for selecting the output of the radio means on the basis of the output, and the delay time of the delay means is set to the traveling direction switching operation of the tape means. It is longer than the required operating time of each of the operating means. Further, muting means for muting the reproduction output of the tape means based on the output of the state detecting means is provided.

(E) Operation The present invention is constructed by focusing on the short operation time of the fast-forwarding operation means and the rewinding operation means necessary for the traveling direction switching operation of the tape means as described above. When the tape is fast forwarded or rewound while holding the operation of the rewinding operation means, the tape is switched to the radio side after a small amount of time has passed, and when the tape operation direction is switched by operating each operation means, Since the operation of each operating means is canceled before switching to the radio side, switching to the radio side is not performed. Also, since muting is applied until switching from the tape side to the radio side, fast-forward,
Noise generated when rewinding or switching the tape running direction is not output.

(F) Embodiment An embodiment of the present invention will be described with reference to the drawings. Figure 1 shows
The front view of the audio equipment of this invention is shown, (1) is a cassette insertion port, and the 2nd switch (17) mentioned later which is turned ON / OFF by inserting / removing a cassette is provided in this. Also, when a cassette is inserted into the cassette insertion opening (1), a reproducing mechanism (not shown) is activated. (2) is a fast-forward button, and (3) is a rewind button. Each of the fast-forward button (2) and the rewind button (3) has a fast-forward mechanism (4), a rewind mechanism (5) and a tape running direction switching mechanism (6) as shown in FIG. First and second to activate each
It is connected to the operation plates (7) and (8). When the first and second operation plates (7) and (8) are operated separately by pressing the fast-forward button (2) and the rewind button (3) (in the direction of the arrow), the fast-forward mechanism ( 4) or the rewinding mechanism (5) is operated, and when operated simultaneously, the traveling direction switching mechanism (6) is operated. When the first and second operation plates (7) and (8) are operated separately, the operation state (pressed state) is maintained until another operation plate is slightly depressed, and when operated simultaneously, It is configured to return to the original state when the manual operation is stopped. The first and second operation plates (7),
Each of (8) is adapted to be detected by the first switch (9) whether or not it is in the operating state (in the operating state,
ON, otherwise OFF). (10) is an eject button for ejecting the inserted cassette, (11) is a display for displaying the reception frequency, and (12), (13) and (14) are preset buttons.

FIG. 3 is a circuit diagram of the audio device described above. (15) is a tape reproducing circuit, (16) is a radio receiving circuit, (17) is a second switch, and the cassette is inserted into the cassette insertion slot (1). If it is ON, otherwise it is OFF. (18) is a switching circuit, which includes a switching IC (181) and a transistor (18
2), (183) and resistors (184) (185) (186) (187). The IC (181) outputs the input signal of the b terminal (the output signal of the radio receiving circuit (16)) from the d terminal when the "H" signal is applied to the c terminal, and the "L" signal is applied to the c terminal. If so, the input signal of the a terminal (the output signal of the tape reproducing circuit (15)) is output from the d terminal.
(19) is a delay circuit composed of a resistor (191) and a capacitor (192), and is set to a time constant longer than the time (about 2 seconds) required to operate the traveling direction switching mechanism (6). A muting circuit (20) is composed of a transistor (201), a resistor (202) and a capacitor (203). Reference numeral (21) is an amplifier for amplifying a signal from the d terminal of the IC (181), and reference numeral (22) is a speaker.

Next, the operation of the above configuration will be described. When the user inserts the cassette into the cassette insertion slot (1), the second switching (17) turns on, the transistor (182) turns on, and the IC (181) outputs the output signal of the tape playback circuit (15). Is output from the d terminal. In this state, when the user operates the fast forward button (2) or the rewind button (3) to perform fast forward or rewind, the first switch (9) is turned on, but the delay circuit (19) causes The transistor (183) turns ON after 2 seconds or more has elapsed. This causes the transistor (182)
Since it is turned off, the IC (181) outputs the output signal of the radio receiving circuit (16) from the d terminal. The first switch (9)
The output signal from the tape playback circuit (15) is output from the d terminal of the IC (181) for about 2 seconds after turning ON, so noise during fast forward or rewind is output from the speaker (22). There is a possibility that it may occur, but here the first switch (9)
Since the transistor (201) is turned on in response to turning on, the output signal of the tape reproducing circuit (15) is grounded, and there is no such fear.

Further, when the user simultaneously operates the fast forward button (2) and the rewind button (3) in the tape reproducing state to perform the traveling direction switching operation, the second switch (9) is also turned on, but the transistor Since the buttons (2) and (3) are normally returned to their original states before (183) is turned on (until 2 seconds or more elapse), the output signal of the radio reception circuit (16) is IC.
It is not output from the (181) d terminal. Also in this case, since the muting circuit (20) operates, noise generated during the traveling direction switching operation is not reproduced by the speaker (22).

In the present invention, the fast-forward button (2) and the first operation plate (7) serve as fast-forward operation means, and the rewind button (3) and the second operation plate (8) serve as rewind operation means. , A fast-forward mechanism (4), a rewinding mechanism (5), a traveling direction switching mechanism (6) and a tape reproducing circuit (15) as tape means, a radio receiving circuit (16) as radio means, and a first switch (9).
Corresponds to the state detecting means, the switching circuit (18) corresponds to the switching means, the delay circuit (19) corresponds to the delay means, and the muting circuit (20) corresponds to the muting means.

(G) Effect of the Invention Since the present invention is configured as described above, in the one in which the traveling direction switching operation is performed by the simultaneous operation of the fast-forwarding operation means and the rewinding operation means, at the time of fast-forwarding and rewinding. Switching to the radio side is possible, and switching to the radio side can be prevented during the tape traveling direction switching operation. Further, it is possible to prevent noise from being output when fast-forwarding, rewinding and switching the traveling direction.

[Brief description of drawings]

FIG. 1 is a front view of an audio device of the present invention, FIG. 2 is an explanatory view of a fast-forward operation means and a rewind operation means, and FIG. 3 is a circuit diagram thereof. (2) …… Fast forward button, (3) …… Rewind button, (4) ……
Fast forward mechanism, (5) ... Rewind mechanism, (6) ... Traveling direction switching mechanism, (7) ... First operation plate, (8) ... Second operation plate, (9) ... First switch , (15) …… tape reproducing circuit, (16) …… radio receiving circuit, (18) …… switching circuit, (19) …… delay circuit, (20) …… muting circuit.

Claims (3)

[Scope of utility model registration request] 1. A tape means having a fast-forwarding operation means and a rewinding operation means for performing a traveling direction switching operation by simultaneously operating the respective means, a radio means, and the fast-forwarding operation means and the rewinding operation means. The state detecting means comprises a state detecting means for detecting an operation state and a switching means for selecting an output of the radio means based on an output of the state detecting means while selecting a reproduction output of the tape means. An audio device, characterized in that delay means for delaying the output of the state detecting means is provided between the switching means and the switching means. 2. The utility model registration claim 1, wherein the delay time of the delay means is longer than the operation time of each of the operation means necessary for the traveling direction switching operation of the tape means. Sound equipment. 3. An audio device according to claim 2, further comprising muting means for muting the reproduction output of the tape means based on the output of the state detecting means.