JPH0440897B2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a radio receiver with an alarm function.

<Prior Art> In recent years, radio receivers such as car radios, car stereos, and home audio equipment that have an alarm function have become popular.

Such a radio receiver with an alarm function is configured so that if a predetermined time is set, the radio receiver starts reception at that time, receives the broadcast of the predetermined station, and outputs audio. .

<Problems with the Prior Art> However, depending on the time, there are times when the broadcast station set for the alarm is not broadcasting, and in this case there is a problem in that no sound is output even when the alarm time arrives. Furthermore, in car radios and the like, there are times when it becomes impossible to receive broadcasts on a preset frequency due to the movement of the car, and in this case as well, there is a problem in that no sound is output even when the alarm time arrives.

<Summary of the Invention> The present invention has been made to improve the drawbacks of the conventional radio receiver with an alarm function described above, and includes a timekeeping means for measuring time, an alarm time setting means for setting an alarm time, and an alarm time setting means for setting an alarm time. means for storing an alarm time set by the setting means; means for detecting coincidence between the time measured by the clocking means and the time stored in the storing means; and receiving by a detection signal from the detecting means. a control means for setting the circuit to a reception state, a reception detection means for detecting whether or not the reception circuit is receiving broadcasting, a means for automatic tuning when no reception is detected by the reception detection means; The basic feature is that the receiving circuit has means for outputting the received broadcast as audio.

<Operation> In the above configuration, when the time coincidence is detected by the time coincidence detection means, the receiving circuit enters the broadcast reception state. Then, the reception detecting means detects whether or not the receiving circuit is actually receiving the broadcast, and when the broadcast is not being received, the automatic tuning means automatically performs tuning and receives the broadcast. .
This received broadcast is output from the audio output means and functions as an alarm for waking up.

<Example> An example of the present invention will be described below based on the drawings.

In FIG. 1, reference numeral 1 denotes a clock as a timekeeping means, the output of which is input to a time coincidence detection device 4. Reference numeral 2 denotes an alarm time setting device for setting a desired alarm time, and the alarm time can be set by operating the operating means 11. The alarm time set by the alarm time setting device 2 is sent to the alarm time storage device 3 and stored there. Time coincidence detection device 4
The time stored in the alarm time storage device 3 is constantly compared with the current time from the clock 1, and when the two match, the match signal is sent.
It is configured to output to the ON/OFF control device 8. The ON/OFF control device 8 is the receiving circuit 10
It is a control means for setting the receiving circuit 10 to the receiving state, and is adapted to put the receiving circuit 10 into the operating state upon receiving a coincidence signal from the time coincidence detecting device 4.

The coincidence detection signal from the time coincidence detection device 4 is also output to the S meter signal detection device 5.

The S meter signal detection device 5 is a reception detection means that detects whether or not the reception circuit 10, which has entered the reception state by the ON/OFF control device 8, is actually receiving broadcasting. It is designed to input signals (signal meter) and check the reception of broadcasts.

If the S meter signal is not sent from the receiving circuit 10, the S meter signal detection device 5 sends a signal to the automatic tuning control device 6 indicating that no reception is detected.
The automatic tuning control device 6 performs automatic tuning such as a so-called seek operation, and receives SD (Signal) from the receiving circuit 10.
The receiving frequency of the receiving circuit 10 is changed while inputting the SD output, and the receiving circuit 10 is configured to receive the frequency when the SD output is received. The receiving circuit 10 is equipped with a tuner that changes its reception frequency in response to a control signal from the automatic channel selection control device 6.

The output of the receiving circuit 10 is input to the audio output device 7, where it is output as audio.

In addition, as shown by the dotted line in the figure, the S meter signal detection signal from the S meter signal detection device 5 is also transmitted to the audio output device 7, so that the audio output device 7 is operated only when the S meter signal is detected. It is also possible to configure A time display device 9 displays the time measured by the clock 1, the time set by the alarm time setting device 2, and the like.

Next, the operation will be explained.

The operator first operates the operating means 11 to set a desired alarm time. Through this operation, the alarm time is set in the alarm time setting device 2, and the set alarm time is stored in the alarm time storage device 3. The time coincidence detection device 4 compares the measured time from the clock 1 and the alarm time from the alarm time storage device 3, and when they match, turns the coincidence signal ON/OFF to the control device 8.
and is output to the S meter signal detection device 5.

The ON/OFF control device 8 transmits an activation signal to the receiving circuit 10 based on the coincidence signal, and sets the receiving circuit 10 to a receiving state. At the same time, S meter signal detection device 5
inputs the S meter signal from the receiving circuit 10 and checks whether the receiving circuit 10 is actually receiving broadcasting. If the receiving circuit 10 is receiving a broadcast, the received content is converted into audio by the audio output device 7 and functions as an alarm. If there is no S-meter signal and no broadcast is being received, the S-meter signal detection device 5 sends a signal to the automatic channel selection control device 6 indicating that no reception has been detected. The automatic channel selection control device 6 performs a so-called seek operation in response to this signal, changes the frequency sequentially, and causes the receiving circuit 10 to receive other broadcasts. In this embodiment, the seek operation is performed twice, and during the first seek, narrow band (local) reception is performed, and only stations with strong electrolytic strength and which can be clearly received are searched. If there is no station that can be received in the first round, broadband (Dx) reception is performed on the second round, and weak electric fields are also searched.

When the receiving circuit 10 receives another broadcast, the received content is sent to the audio output device 7 where it is converted into audio and functions as an alarm. Note that, as described above, it is also possible to send a reception signal from the S meter signal detection device 5 to the audio output device 7, and to operate the audio output device 7 only when the reception signal is received.

FIG. 2 shows another embodiment constructed using a microcomputer 20.

The microcomputer 20 inputs the S meter signal and the SD signal from the radio receiver main body 30, and outputs the control voltage Vt and wideband reception signal Dx to the radio receiver main body 30. The radio receiver main body 30 includes components similar to the above-described receiving circuit 10 and audio output device 7, and is also equipped with a tuner that changes the reception frequency in response to the control voltage Vt and wideband reception signal Dx. It is being
The power supply circuit 31 of the radio receiver main body 30 is controlled by the microcomputer 20, and is configured so that the radio receiver main body 30 can be put into a receiving state by detecting a coincidence of times.

input port 23 of the microcomputer 20,
Each output port 24 has a key matrix 22
It is connected to the. The key matrix 22 also includes keys for setting the time. A display device 21 is also connected to the microcomputer 20, and is configured to display necessary information such as the set time and current time.

The operation of the microcomputer 20 will be explained using the flowchart shown in FIG.

The microcomputer 20 checks whether the alarm setting key in the key matrix 22 has been pressed (step 40), and if it has not been pressed, performs other normal processing (step 50). If pressed,
The alarm time set by the alarm setting key is stored, and the time is measured by a timer built in the microcomputer 20 to constantly check whether the alarm time has arrived (step 41). When the alarm time arrives, the power supply circuit 31 is controlled to operate the radio receiver main body 30 and put it into a receiving state (step 42). Radio receiver body 30
When a broadcast is received on a preset frequency, the radio receiver main body 30 outputs the broadcast as an alarm. At this time, the S meter signal output from the radio receiver body 30 to the microcomputer 20 is Lo. The microcomputer 20 checks this S meter signal (step 43), and if it is Lo, it does not change the control voltage Vt and transmits the frequency to the radio receiver body 30.
(Step 44).

When the S meter signal is H, the control voltage Vt is sequentially changed to cause the radio receiver body 30 to perform a seek operation (step 45). During this operation, the microcomputer 20 receives the SD from the radio receiver main body 30.
The signal is checked (step 46), and if this signal is turned on and the radio receiver body 30 receives another broadcast, the frequency is maintained (step 48).
As a result, other broadcasts are received by the radio receiver main body 30 and outputted as an alarm. After completing one cycle of the seek operation, if there is no received broadcast, the microcomputer 20 outputs a Dx signal to the radio receiver main body 30 to perform broadband reception (step 47). Once a broadcast is received, the frequency is maintained in the same manner as above (step 48).

As explained above, in the above configuration, even if there is no broadcast on the preset frequency, other stations are automatically sought and received. There is no possibility that the alarm will not be output, and reliable alarm operation can be obtained. Therefore, it is suitable for a radio receiver with an alarm function for napping in large trucks, etc., and is also applicable to various other radio receivers.

<Effects of the Invention> As explained above, the radio receiver with an alarm function of the present invention has a clock means for measuring time, an alarm time setting means for setting an alarm time, and a memory for storing the alarm time set by the setting means. means for detecting coincidence between the time measured by the clocking means and the time stored in the storing means; and a control means for setting the receiving circuit to a receiving state by a detection signal from the detecting means. , a reception detection means for detecting whether or not the reception circuit is receiving a broadcast; a means for automatically selecting a channel when no reception is detected by the reception detection means; and a sound output of the broadcast received by the reception circuit. Because it has the means,
Even if a broadcast cannot be received at the set frequency, other broadcasts are automatically received, so the alarm function can be reliably achieved by the broadcast audio output. Therefore, there is an effect that a reliable wake-up can be performed.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention;
FIG. 2 is a block diagram showing another embodiment, and FIG. 3 is a flowchart. 1: Clock, 2: Alarm time setting device,
3: alarm time storage device, 4: time coincidence detection device, 5: S meter signal detection device, 6: automatic channel selection control device, 7: audio output device, 8: ON/OFF control device, 9: time display device, 10: Receiving circuit, 1
1: Operating means, 20: Microcomputer, 2
1: Display device, 22: Key matrix, 23:
Input port, 24: Output port, 30: Radio receiver body, 31: Power supply circuit.

Claims (1)

[Scope of Claims] 1. A clock means for measuring time; an alarm time setting means for setting an alarm time; a means for storing the alarm time set by the setting means; a time measured by the time measuring means; means for detecting coincidence of times stored in the storing means; control means for setting the receiving circuit to a receiving state based on a detection signal from the detecting means; and determining whether or not the receiving circuit is receiving broadcasting. A device with an alarm function, characterized in that it has a reception detection means for detecting a broadcast, a means for automatic tuning when no reception is detected by the reception detection means, and a means for audio outputting the broadcast received by the reception circuit. radio receiver.