JPH0424667Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to an audio device that includes a radio receiver and a recording medium playback device and is advantageously implemented as a vehicle.

BACKGROUND ART Conventionally, in-vehicle audio devices have been constructed in which a radio receiver and a magnetic tape cassette player are integrally configured. When attempting to receive radio radio, the user must first eject the magnetic tape cassette from the player and then operate the push button switch for radio reception, which is cumbersome. Furthermore, when attempting to play the magnetic tape cassette again, the magnetic tape cassette must be inserted into the machine. In general, in car-mounted audio equipment, sources such as radio receivers and magnetic tape cassette players tend to be switched much more frequently than in home audio equipment. Therefore, it is desired to simplify the manual operation and quickly select a desired source.

Problems to be Solved by the Invention The purpose of the invention is to provide an audio device that can quickly switch between radio reception and playback of a recording medium to produce sound with a simple operation.

Means for Solving the Problems The present invention consists of a radio receiver that performs AM and FM reception operations, a recording medium player, a manually operated single mode switch, a manually operated AM reception switch, and a radio receiver that performs AM and FM reception operations. , a manually operated FM reception switch, a manually operated playback switch, an attachment detection means for detecting whether or not a recording medium is attached to the recording medium playback device, the AM reception switch, the FM reception switch, and In response to the output of the playback switch, when the FM reception switch is operated, the radio receiver is set to FM reception operation mode, and the recording media player is in standby mode, and when the AM reception switch is operated, the AM reception operation mode is set. as a radio receiver
When AM reception is activated, the recording medium playback device is in standby mode, and the playback switch is operated, the radio receiver is paused in the recording medium playback mode, the recording medium playback device is put into playback mode, and the output of the mode switch is activated. In response to this, if the attachment detection means detects that a recording medium is attached to the recording medium playback device, the FM reception operation mode and AM reception operation are changed each time the mode switch is operated. mode and the recording medium playback mode are repeated, and if the attachment detection means detects that the recording medium is not attached to the recording medium playback machine, the FM reception operation mode and the AM reception operation are repeated. The acoustic device is characterized in that it includes a control means for repeatedly controlling the mode.

Function According to the present invention, the radio receiver performs the receiving operation and the recording medium reproducing operation by selective manual operation of the reception switch and the playback switch, so the operation is simplified and the radio It becomes possible to quickly switch the desired source of either the receiver or the recording medium reproducing device and convert it into sound.

Embodiment FIG. 1 is a block diagram of an embodiment of the present invention. The in-vehicle audio device 1 uses frequency modulation (abbreviation:
Radio receiver 2 that can switch between receiving FM) broadcasts and amplitude modulation (abbreviated as AM) broadcasts.
and a player 4 into which a magnetic tape cassette 3 is inserted and plays the magnetic tape cassette 3. The acoustic signals from the radio receiver 2 and the magnetic tape cassette player 4 pass through a mixing circuit 5,
The signal is applied to an amplifier circuit 6 and made into sound by a speaker 7.

The processing circuit 8 has output terminals P1, P2, and P3, and depending on the output from the output terminal P1, the radio receiver 2 is switched to each operating state of FM reception, AM reception, and rest. Further, in response to a signal from the output terminal P2, the magnetic tape cassette player 4 is switched between an operating state in which the magnetic tape cassette is played back and a standby state in which the magnetic tape cassette 3 is installed but does not perform any playback operation. can perform actions. Due to the output from output terminal P3,
The operation of the amplifier circuit 6 is controlled. This amplifier circuit 6
When either the radio receiver 2 or the magnetic tape cassette player 4 is in operation, it is always energized and is in a state where it can amplify the acoustic signal. The processing circuit 8 is given an operation command signal from the input circuit 9 . The input circuit 9 includes a reception switch 11 for FM reception and a reception switch 12 for AM reception.
, a playback switch 13 for playing back the magnetic tape cassette 3, a power switch 14, and a mode switch 15.

2, 3, and 4 are flowcharts for explaining the operation of the embodiment shown in FIG. 1. Move from step n1 to step n2,
It is determined whether or not the power switch 14 has been turned on, and when the power switch 14 has been turned on, the process moves to step n3 and the memory provided in the processing circuit 8 is read. This memory stores the operation contents of the radio receiver 2 immediately before the FM and AM reception operation was stopped, and also whether the magnetic tape cassette player 4 was in the playback state or the magnetic tape cassette 3 was not installed. Information such as whether the magnetic tape cassette 3 was in a standby state or whether the magnetic tape cassette 3 was removed is stored.

In step n4, as a result of reading the memory,
It is determined whether the stored contents immediately before the power switch 14 was shut off were AM reception, FM reception, and the reproduction state of the magnetic tape cassette 3 indicated by the reference numeral CS. If FM broadcasting is being received immediately before the power switch 14 is shut off, the process moves to step n5, and the radio receiver 2 starts receiving the FM broadcast again.
FM reception status is established. If the AM broadcasting reception state is reached immediately before the power switch 14 is turned off, the process moves to step n6 and the AM reception state is entered.
If the magnetic tape cassette 3 is in the playback state immediately before the power switch 14 is shut off, the process moves to step n7, where it is determined whether the magnetic tape cassette 3 is in a standby state with the magnetic tape cassette 3 installed, and if so. Then, the program moves to step n8, and the magnetic tape cassette 3 is reproduced.
When it is determined in step n7 that the magnetic tape cassette 3 has been ejected, the same operation as in the previous FM reception state is performed in step n5.

At step n9, magnetic tape cassette 3
When the insertion of the magnetic tape cassette 3 is detected, the process moves to step n8 and the magnetic tape cassette 3 is played back. If magnetic tape cassette 3 is not inserted, step
The process moves to step n10, and it is determined whether the mode switch 15 has been operated. If not, the process moves to step n11, and it is determined whether the AM reception switch 12 has been operated. When the AM reception switch 12 is operated, the process moves to step n12, and it is determined whether AM reception should be performed in the same state as the contents of the memory. After turning on the power switch 14,
When the frequency of AM reception is changed, the contents stored in the memory and the actual reception operation state will differ, and in this case, the process moves to step n13. In step n13, it is determined whether the magnetic tape cassette 3 is currently being played back. If the AM reception switch 12 is operated while the magnetic tape cassette 3 is in playback mode, the process moves to step n15, where the playback operation is temporarily stopped while the magnetic tape cassette 3 remains attached. It will be in a standby state. When the magnetic tape cassette 3 is not being reproduced, an AM receiving operation is performed at a desired frequency in step n14.

At step n16, the FM reception switch 11
If it is detected that has been manipulated, step n17
Then, it is determined whether the contents are the same as the contents stored in the memory. After the power switch 14 is turned on, if the frequency etc. at which FM reception is changed in the radio receiver 2, the content will be different from the content stored in the memory, and in this case, the step
The process moves from n17 to step n18, and it is determined whether or not the playback operation of the magnetic tape cassette 3 is currently being performed. If so, the process moves to step n20, where the playback operation of the magnetic tape cassette 3 is temporarily stopped and the playback operation is put into a standby state. do. Also, if the FM reception operation is the same as the memory contents at step n17, the step
The process moves to n5, and the same FM reception operation as the contents of that memory is performed. If it is determined in step n18 that the magnetic tape cassette is currently not being played, then in step n19,
FM reception operation is performed at a frequency different from that stored in memory.

In step n21, it is determined whether the tape reproduction switch 13 has been operated, and if it has not been operated, the process moves to step n22, and it is determined whether the power switch 14 has been operated, and if the power switch 14 has not been operated, the process moves to step n4. step
When the power switch 14 is operated at step n22, the process moves to step n24, where the current operating state and the loading/unloading of the magnetic tape cassette 3 are stored in the memory, and the operation ends. When it is determined in step n21 that the tape reproduction switch 13 has been operated, it is determined in step n23 whether or not it is in a standby state, that is, whether or not the magnetic tape cassette 3 is loaded. If the magnetic tape cassette 3 is installed and in standby mode, proceed to step
The program moves from step n23 to step n8, and the magnetic tape cassette 3 is played back.

In step n10 in FIG. 2 above,
If the mode switch 15 has been operated, the process moves to step n26, where it is determined what the current operating mode is. If the current operating mode is the FM reception state, the process moves to step n27 and the AM reception state is entered. If the current operation mode is AM reception, the process moves from step n26 to step n28, where it is determined whether the magnetic tape cassette 3 is installed and in a standby state, and if so, the process moves to step n29.
Then, the reproduction operation of the magnetic tape cassette 3 is performed. Further, if the current operating mode is the reproduction operation of the magnetic tape cassette 3, the process moves from step n26 to step n30, and by pressing the mode switch 15, the magnetic tape cassette reproducing machine 4 is put into a standby state. Step n31
, and performs FM reception operation. In this way, as shown in FIG. 5, each time the mode switch 15 is pressed, the operation changes in order.

When the mode switch 15 is pressed while the magnetic tape cassette 3 remains ejected from the magnetic tape cassette reproducing machine 4, the operation moves from step n28 to step n31. As shown, the operations of FM reception and AM reception are repeated alternately.

In this way, by pressing the switches 11 and 12 for FM or AM reception and pressing the tape switch 13, the desired operation can be easily and quickly obtained.

Furthermore, since the present invention is also provided with a mode switch 15, the operation mode can be changed repeatedly and sequentially by simply operating this single mode switch 15, making the operation extremely easy.

Furthermore, in the present invention, the magnetic tape cassette 3
Since the mode is switched by detecting whether or not the magnetic tape cassette 3 is installed, unnecessary operations such as switching to the playback mode of the magnetic tape cassette 3 even though the magnetic tape cassette 3 is not installed can be prevented. , operability can be further improved.

Instead of the magnetic tape cassette reproducing means 4, other recording media may be used, such as a reproducing machine for compact discs and digital audio tapes.

Effects As described above, according to the present invention, it becomes possible to quickly switch a desired source of either a desired radio receiver or a recording medium player and make it sound with a simple operation. Furthermore, since the present invention is provided with a mode switch, the source can be switched by simply operating one mode switch, making the operation extremely easy.

Furthermore, in the present invention, since the operation mode is switched depending on whether or not a recording medium is attached by the attachment detection means, the mode is set to recording medium playback mode even though no recording medium is attached. Such unnecessary operations can be prevented, and operability can be further improved.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an embodiment of the present invention;
3 and 4 are flowcharts for explaining the operation of the embodiment shown in FIG.
The figure is a diagram for explaining the operation when the mode switch 15 is pressed with the magnetic tape cassette 3 installed, and FIG.
It is a figure for demonstrating the operation|movement when pressing operation is performed. 1... Vehicle-mounted audio device, 2... Radio receiver,
3...Magnetic tape cassette, 4...Magnetic tape cassette player, 5...Mixing circuit, 6...Amplifying circuit, 7...Speaker, 8...Processing circuit, 9...Input circuit, 11...FM reception Switch, 12...
AM reception switch, 13...tape playback switch, 14...power switch, 15...mode switch.

Claims (1)

[Claims for Utility Model Registration] A radio receiver that performs AM and FM reception operations, a recording medium player, a manually operated single mode switch, a manually operated AM reception switch, and a manually operated AM reception switch. a manually operated playback switch; an attachment detection means for detecting whether or not a recording medium is attached to the recording medium playback device; outputs of the AM reception switch, the FM reception switch, and the playback switch; In response, when the FM reception switch is operated, the radio receiver is set to FM reception operation mode and the recording medium player is set to standby, and when the AM reception switch is operated, the radio receiver is set to FM reception operation mode. of
When AM reception is activated, the recording medium playback device is in standby mode, and the playback switch is operated, the radio receiver is paused in the recording medium playback mode, the recording medium playback device is put into playback mode, and the output of the mode switch is activated. In response to this, if the attachment detection means detects that a recording medium is attached to the recording medium playback device, the FM reception operation mode and AM reception operation are changed each time the mode switch is operated. mode and the recording medium playback mode are repeated, and if the attachment detection means detects that the recording medium is not attached to the recording medium playback machine, the FM reception operation mode and the AM reception operation are repeated. and control means for repeatedly controlling the mode.