JPH0534735U - Compound sound device - Google Patents

Abstract

(57) [Summary] [Purpose] To make it possible to hear the broadcast sound of the radio without making noise during fast-forwarding or rewinding the cassette tape. [Structure] In step S4, the selector switch is switched to the tuner side, and the process proceeds to step S5. Step S5
Then, if the fast-forward key is pressed, the cassette tape reproducing device is set to the fast-forward state, and if the rewind key is pressed, the cassette tape reproducing device is set to the rewinding state, and the process proceeds to step S6. In step S6, it is determined whether or not the play key is pressed. If the play key is pressed, the process proceeds to step S1. If not, the process proceeds to step S7. In step S7, it is determined from the electric field strength of the received radio wave whether or not there is a broadcasting station at the tuning frequency. If there is a broadcasting station, the process proceeds to step S6, and if there is no broadcasting station, the process proceeds to step S8. In step S8, the reception frequency is changed to the next frequency, and the process proceeds to step S6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a composite audio device in which a radio and a cassette tape reproducing device are integrated, and more particularly to a composite audio device in which a radio sound can be heard during preparatory operations of the reproducing device such as fast-forwarding and rewinding cassette tapes. .

[0002]

[Prior Art]

 A conventional compound audio device with a built-in radio and cassette tape playback device that could be heard by the radio during cassette tape rewinding or fast-forwarding was annoying because noise could be heard if there was no broadcasting station at the radio reception frequency. .

[0003]

[Problems to be solved by the device]

 This invention has been made in view of the above points, and its purpose is to ensure that there is no broadcasting station at the receiving frequency of the radio when preparing to play back the recording medium such as rewinding the cassette tape or fast-forwarding. It is to provide a compound sound device that automatically searches for a broadcasting station and emits radio sound.

[0004]

[Means for Solving the Problems]

 The composite audio device of the present invention is being prepared for reproduction of a recording medium in a composite audio device in which a speaker is sounded by either an audio signal obtained by receiving a radio broadcast or an audio signal obtained by reproducing a recording medium. Is configured so that radio broadcasts can be listened to, and when there is no broadcast station on the frequency being received, it automatically searches to find a broadcast station and emit sound.

[0005]

[Action]

 According to the composite audio device of the present invention, if the radio is not tuned to the frequency of the broadcasting station while the recording medium is being replayed, such as when the cassette tape is rewound or fast-forwarded, the frequency of the broadcasting station is automatically searched for and broadcast. It emits a sound, so you don't have to hear any unpleasant noise.

[0006]

【Example】

 A composite audio device incorporating a cassette tape reproducing device and a radio according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the apparatus of the embodiment. In the figure, reference numeral 1 is a tuner, which is tuned to a transmission frequency by a signal from a microcomputer 3 to receive a broadcast wave and demodulate an audio signal. The audio signal demodulated by the tuner 1 is input to the amplifier 4 via the changeover switch 6. The tuner 1 also outputs a signal indicating the electric field strength of the received radio wave to the microcomputer 3.

Reference numeral 2 denotes a cassette tape reproducing device, which operates in accordance with a signal from the microcomputer 3 and outputs an audio signal reproduced from the cassette tape to the amplifier 4 via the changeover switch 6.

The microcomputer 3 has a built-in ROM and RAM, operates according to a program recorded in the ROM and a signal from the operation switch 5, outputs a signal for determining a reception frequency to the tuner 1, and also a cassette tape. It outputs a signal to the playback device 2 and operates it.

The microcomputer 3 further outputs a signal to the changeover switch 6 to select one of the tuner 1 and the cassette tape reproducing device 2 by the changeover switch 6 and connect it to the amplifier 4. The amplifier 4 amplifies the input audio signal and sounds the speaker 7.

Next, the operation of the microcomputer when the cassette tape reproducing device in the composite audio device of the embodiment is operated will be described with reference to the flowchart of FIG. First, when operating the cassette tape player. In step S1, the changeover switch 6 is changed over to the tape cassette reproducing device side. Next, in step S2, the cassette tape reproducing device is set to the play state and the process proceeds to step S3.

In step S3, it is determined whether or not the fast-forward key or the rewind key is pressed. If the fast-forward key or the rewind key is pressed, the process proceeds to step S4. In step S4, the selector switch 6 is switched to the tuner side, and the process proceeds to step S5. In step S5, if the fast-forward key is pressed, the cassette tape reproducing device is set to the fast-forward state, and if the rewind key is pressed, the cassette tape reproducing device is set to the rewinding state, and the process proceeds to step S6.

In step S6, it is determined whether or not the play key is pressed. If the play key is pressed, the process proceeds to step S1. If not, the process proceeds to step S7.

In step S7, it is determined from the electric field strength of the received radio wave whether or not there is a broadcasting station at the tuning frequency. If there is a broadcasting station, the process proceeds to step S6, and if there is no broadcasting station, the process proceeds to step S8. Transition. In step S8, the reception frequency is changed to the next frequency and the process proceeds to step S6.

As described above, in the fast-forwarding or rewinding state, steps S7 and S8 are repeated until the electric field strength of the reception frequency becomes strong, so that the reception frequency is changed, and when the electric field strength of the reception frequency becomes strong, the signal is received at that frequency. Continue to ring the speaker.

The embodiment is configured as described above, but the invention is not limited to this. For example, a DAT may be incorporated instead of the tape cassette reproducing device.

This consideration can also be applied when listening to the radio during CD exchange with the CD autochanger.

[0017]

[Effect of the device]

 According to the composite audio device of the present invention, the broadcast sound of the radio can be heard without generating noise during fast-forwarding and rewinding of the cassette tape.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a compound acoustic device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation of the same composite audio device.

[Explanation of symbols]

 1 Tuner 2 Cassette tape player 3 Microcomputer 4 Amplifier 5 Operation switch 6 Changeover switch 7 Speaker

Claims (1)

[Scope of utility model registration request] 1. In a compound sound device which makes a speaker sound by either an audio signal obtained by receiving a radio broadcast or an audio signal obtained by reproducing a recording medium, the radio broadcast is heard while the recording medium is being prepared for reproduction. In addition, when there is no broadcasting station at the frequency being received, the compound acoustic device is configured to automatically search to find the broadcasting station and make a sound.