JPH0440898B2 - - 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.

In such a radio receiver with an alarm function, if a predetermined time is set in advance, the radio receiver will start reception at that time, receive the broadcast of the predetermined station, and output audio. ing.

<Problems with the prior art> However, depending on the set time, the broadcast station set for the alarm may not be broadcasting, and in this case, there is a problem 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; means for audio outputting the broadcast received by the receiving circuit; means for outputting an alarm sound generation signal when the broadcast is not received even by automatic tuning by the automatic tuning means; and the alarm sound generation signal. The basic feature is that the device has a means for outputting an alarm sound.

<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.

If the broadcast is still not received even after automatic channel selection, an alarm sound generation signal is output, and an alarm sound is output from the alarm sound output means.

<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 5. The ON/OFF control device 5 is for controlling the power of the radio receiver on/off.
By receiving a coincidence signal from the time coincidence detection device 4 and turning on the power, the receiving circuit 10 is set to a receiving state.

The ON/OFF control device 5 turns on the receiving circuit 10 and simultaneously puts the S meter signal detection device 6 into operation. The S meter signal detection device 6 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 5, 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 6 sends a signal to the automatic channel selection control device 7 indicating that no reception is detected.
The automatic tuning control device 7 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 signal, and when the SD signal is received, the receiving circuit 10 is configured to receive the frequency.

FIG. 2 shows details of an embodiment of the automatic channel selection control device 7. The seek operation ON/OFF control device 71 causes the receiving circuit 10 to perform a seek operation based on the broadcast non-receiving signal from the S meter signal detection device 6, and after performing the seek for a predetermined period, causes the receiving circuit 10 to stop the seek operation. . The SD signal detection device 70 is the receiving circuit 1
The SD signal from 0 is detected, and if it is not detected, a non-detection signal is sent to the seek cycle detection device 72. The seek cycle detection device 72 determines the cycle of the seek operation, and if the predetermined number of times has not been reached, a signal is sent to the seek sensitivity switching device 73 to switch the seek sensitivity and perform a seek. If the predetermined number of times has been reached, the seek cycle detection device 72 turns the seek operation on/off.
A signal is sent to the OFF control device 71 to stop the seek operation of the receiving circuit 10 as described above. The seek cycle may be any number of cycles as long as it is one or more cycles.

Note that the receiving circuit 10 is equipped with a tuner that changes the receiving frequency according to a control signal from the automatic channel selection control device 7.

The output of the receiving circuit 10 is input to an audio output device 12, where it is output as audio.

If the broadcast is not received even by the seek operation of the automatic channel selection control device 7, the S meter signal detection device 6 transmits a signal to the ON/OFF control device 5 indicating that there is no broadcast reception. Upon receiving this signal, the ON/OFF control device 5 turns off the power of the radio receiver and sends an activation signal to the alarm ON/OFF control device 8. In response to this activation signal, the alarm ON/OFF control device 8 causes the alarm 9 to generate a predetermined sound as an alarm sound. The alarm 9 may be separate from the radio receiver, or may be configured inside the radio receiver using a part of its configuration. Then, the alarm sound may be outputted from the audio output device 12. In this case, the ON/OFF control device 5 should be used to prevent the radio receiver from being turned off when there is no broadcast reception;
Alternatively, a configuration is required to maintain power to the components of the alarm 9.

A time display device 13 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. By 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 5.
Output to.

The ON/OFF control device 5 activates the S meter signal detection device 6 based on the coincidence signal, and also activates the receiving circuit 1.
0 and sets the receiving circuit 10 to the receiving state. The S meter signal detection device 6 inputs the S meter signal from the receiving circuit 10 and checks whether the receiving circuit 10 is actually receiving the broadcast.
If the receiving circuit 10 is receiving a broadcast, the received content is converted into audio by the audio output device 12 and functions as an alarm. If there is no S meter signal and the broadcast is not received, the S meter signal detection device 6
A signal indicating that there is no reception detection is transmitted to the automatic channel selection control device 7. The automatic channel selection control device 7 performs the above-described 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 12 where it is converted into audio and functions as an alarm.

If the broadcast is still not received even after the seek operation by the automatic channel selection control device 7, a signal indicating that the broadcast is not received is sent from the S meter signal detection device 6 to the ON/OFF control device 5, and the ON/OFF control device 5 turns off the radio receiver power and sets the alarm
Sends an operating signal to the ON/OFF control device 8. In response to this signal, the alarm ON/OFF control device 8 activates the alarm 9 and outputs a predetermined alarm sound.

As described above, since the alarm sound by the alarm 9 is output even if the broadcast is not finally received, a reliable alarm operation can be obtained.

FIG. 3 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 12, 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 brought 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 is also provided with 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 51). 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.
Check the signal (step 46) and confirm that this signal is
OFF and other broadcasts can be heard from the radio receiver body 30.
is received, maintain the corresponding frequency (step
47). As a result, other broadcasts are received by the radio receiver main body 30 and outputted as an alarm.
In this embodiment, the seek operation is configured to be performed for one period, and it is checked whether or not the receiving frequency band has been completed once (step 48). Go around the seek operation,
If there is no received broadcast, microcomputer 20
outputs a power OFF signal to the radio receiver body 30 to turn off the power (step 49).

And the microcomputer 20 has an alarm 3
2 to generate a predetermined alarm sound (step 50).

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. Furthermore, if the broadcast is not received even by the seek operation, an alarm sound is output by the alarm, so the alarm is reliably output and it is possible to completely prevent accidents in which the alarm output is not obtained. It is.

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. means for outputting an alarm sound generation signal when a broadcast is not received even by automatic tuning by the automatic tuning means, and means for outputting an alarm sound by the alarm sound generation signal. Therefore, even if a broadcast cannot be received due to the set frequency, other broadcasts will be automatically received. As a result, it is possible to reliably perform the alarm function by outputting the broadcast audio.
Furthermore, if it is not possible to automatically receive other broadcasts, an alarm sound can be generated from the alarm sound generating means. 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 details of the automatic channel selection control device, FIG. 3 is a block diagram showing another embodiment, and FIG.
The figure is a flow chart. 1: Clock, 2: Alarm time setting device,
3: Alarm time storage device, 4: Time coincidence detection device, 5: ON/OFF control device, 6: S meter signal detection device, 7: Automatic channel selection control device, 8: Alarm
ON/OFF control device, 9: Alarm, 10: Receiving circuit, 11: Operating means, 12: Audio output device, 1
3: Time display device, 20: Microcomputer, 21: Display device, 22: Key matrix,
23: Input port, 24: Output port, 30: Radio receiver body, 31: Power supply circuit, 32: Alarm, 70: SD signal detection device, 71: Seek operation
ON/OFF control device, 72: seek cycle detection device, 73: seek sensitivity switching device.

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. means for automatically selecting a station when there is no detection of reception by the reception detecting means; means for outputting audio of the broadcast received by the receiving circuit; and automatic selection by the means for automatically selecting. 1. A radio receiver with an alarm function, comprising: means for outputting an alarm sound generation signal when a broadcast is not received by a station; and means for outputting an alarm sound using the alarm sound generation signal.