JPS6317112Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Industrial Application Fields] This invention not only operates as a normal radio receiver and tape recorder by switching operations based on a switch, but also outputs a sleep timer of radio broadcast sound using the tape recorder's auto-stop function. The present invention also relates to a tape recorder with a multifunctional clock/radio receiver that outputs alarms such as radio broadcast sounds and buzzer sounds. [Prior Art] Conventionally, a tape recorder with a radio receiver equipped with the functions of a radio receiver and a tape recorder has a three-position function switch 1 as shown in FIG. 1a. Then, by setting the operation knob 2 of the function switch 1 to the [Tape (OFF)], [Radio], and [Sleep] positions, tape recorder operation, radio receiver operation, and sleep mode are activated. There are switches for each action. The sleep operation is performed by using the tape drive mechanism as if it were a switch, and the function switch 1 is switched to the [sleep] position, and the amplifier output of the radio broadcast sound of the radio receiver is set. , by pressing the push-button play switch 3 shown in FIG. Power is supplied to the amplifier section, radio broadcast sound is output from the amplifier section, and when the tape reaches the end, the play switch 3 is turned off by the auto-stop function of the tape drive mechanism, and the power supply to the radio receiver section is automatically stopped. This allows sleep timer output of radio broadcast sound. On the other hand, tape recorders with clocks and radio receivers, which have become popular in recent years, are formed by adding a clock section consisting of a clock LSI to the aforementioned tape recorders with radio receivers. Using the unit's sleep and alarm functions, a wide variety of operations can be selected, including sleep timer output using radio broadcast sound, alarm output, and buzzer sound alarm output, allowing the unit to operate as a so-called multi-functional tape recorder. The conventional tape recorder with a clock/radio receiver of this type has a function switch 1 and a play switch 3, as well as a push-button standby switch 4 and a push-button standby switch 4 and The operation knob 5 is equipped with an automatic changeover switch 6 that is set to each position of [OFF], [radio (tape)], and [buzzer], and by a combination of four switches 1, 3, 4, and 6, Various functions can be selected as shown in Table 1.

[Problem that the invention attempts to solve]

By the way, the four switches 1, 3, and
As is clear from Table 1, the conventional tape recorder with clock/radio receiver has many functions, but in order to select each function, the conventional tape recorder with clock/radio receiver has four switches 1, 3, There are four or six problems that require complicated and difficult operations. Furthermore, in the case of the tape recorder section described in the above publication, it is equipped with a large number of changeover switches that are changed over by timer operations and changeover operations, and it is necessary to operate four or more changeover switches, making it even more complicated and difficult to understand. There are problems in that it requires operations, and the configuration is complicated and expensive. [Means for solving the problem] This invention was made with the above points in mind, and will be explained using FIG. 4 corresponding to the embodiment. A tape recorder section 16 having an auto-stop function that turns off automatically, and a radio receiver tuner section 1.
7. an amplifier section 18; a power supply control circuit 15 that supplies power to the tape recorder section 16, the tuner section 17, and the amplifier section 18 by applying a reference voltage to the power supply control terminal ct; first and second output terminals co and bu that respectively output a DC alarm signal of a reference voltage and a buzzer signal of an audio frequency with an upper limit voltage or a lower limit voltage set to the reference voltage; and the alarm signal and the buzzer signal. a watch LSI 12 having an alarm cancel terminal ac for output on/off setting; an automatic changeover switch 10 for selectively setting the cancel terminal ac to an output on level or an output off level by switching; a radio/buzzer changeover switch 11 that selectively outputs the alarm signal and the buzzer signal from the terminals co and bu from a common terminal;
and a radio contact R fixed to the reference voltage, a tape contact T to which the reference voltage is applied when the play switch 9 is turned on, and a sleep contact S connected to the common terminal of the radio/buzzer changeover switch 11. a first switch part 8a having a common terminal CT connected to the power supply control terminal ct, and provided in the forward direction between the tape contact T and the sleep contact S of the first switch part 8a,
A backflow prevention diode D that is turned on when the play switch 9 is turned on is provided between the common terminal CT of the first switch section 8a and the amplifier section 18, and supplies the buzzer signal to the amplifier section 18. A radio contact R and a sleep contact S to which the output audio signal of the tuner section 17 is input, and a tape contact T to which the output audio signal of the tape recorder section 16 is input. The common terminal CT is connected to the amplifier section 18, and the first switch section 8
Forms a function switch 8 together with a,
A second switch section 8b is provided which switches in conjunction with the first switch section 8a and selectively supplies the output audio signal of the tape recorder section 16 and the output audio signal of the tuner section 17 to the amplifier section 18. The present invention provides a tape recorder with a clock/radio receiver. [Operation] Therefore, according to this invention, when the first and second switch portions 8a and 8b are switched to the tape contact T and the radio contact R, respectively, by switching the function switch 8, the switch is switched to the tape contact T. When the play switch 9 is turned on, power is supplied to the tape recorder section 16, tuner section 17, and amplifier section 18, and the output audio signal of the tape recorder section 16 is input to the amplifier section 18, and the radio contact R is input to the amplifier section 18.
, the tape recorder section 16, tuner section 17, and amplifier section 18 are constantly supplied with power, and the output audio signal of the tuner section 17 is switched to the amplifier section 1.
9, so they operate as a normal tape recorder and radio receiver, respectively. On the other hand, when the function switch 8 is switched to the sleep contact S of the first and second switch sections 8a and 8b, the auto-stop function automatically turns off the play switch 9, and the radio broadcasts until the end of the tape. A sleep operation is performed in which a sound is output from the sleep timer, and if the output of the alarm signal and buzzer signal of the clock LSI 12 is turned on by the automatic changeover switch 10, then by switching the radio/buzzer changeover switch 11,
An alarm operation is also performed in which a radio broadcast sound or a buzzer sound is selectively output at a set time. Therefore, by operating the function switch 8, it is possible to select between normal tape record operation, radio receiver operation, sleep operation, and alarm operation, and only when the alarm operation is selected, the automatic changeover switch 10 The alarm operation can be turned on or off by operating the radio/buzzer switch 11, and the radio broadcast sound or buzzer sound can be selected by operating the radio/buzzer switch 11. The operation can be changed with a simple operation, and the operation changeover switches include function switch 8, automatic changeover switch 10, and radio/buzzer changeover switch 1.
Since it is only necessary to provide three switches (1), the configuration is simplified and the cost is reduced. [Embodiment] Next, this invention will be explained in detail with reference to FIGS. 3 to 5 showing one embodiment of the invention. As shown in FIGS. 3a to 3d, the operation knobs 7 are for [tape (OFF)], [radio],
A function switch 8, a push-button play switch 9, an automatic changeover switch 10, and a radio/buzzer changeover switch 11 are provided to be set to each position of [sleep]. On the other hand, the operation circuit section is configured as shown in Fig. 4. In the figure, 12 is a watch LSI, and a -1.5V watch power supply _E1 is connected to the power supply terminal, and a DC power supply is supplied at a set time. A first output terminal co outputs an alarm signal, and a second output terminal bu outputs an audio frequency buzzer signal at a set time.
are connected to the radio contact R and the buzzer contact B of the radio/buzzer changeover switch 11, respectively, and an alarm cancel terminal AC for setting the output on and off of the alarm signal and buzzer signal is connected to the common terminal of the automatic changeover switch 10. ing. In addition, the automatic changeover switch 10 has an on contact ON.
is held open, the off contact OFF is grounded, and a ground level (high level) reference voltage V _DD is applied. Reference numeral 13 denotes a clock operation section for setting the current time and alarm time in the clock LSI 12. When the alarm time set by the clock operation section 13 comes, the above-mentioned alarm signal and buzzer signal are sent to the clock LSI 1.
Output from 2. Reference numeral 14 denotes a clock display section that displays the current time and the like based on the display signal of the clock LSI 12. 15 is a power supply control circuit section that supplies power to the tape recorder section 16, radio receiver tuner section 17, and amplifier section 18 when the reference voltage _VDD is applied to the power supply control terminal ct, as shown in FIG. From a switching circuit having a switch 15' that opens and closes between the -4.5V power supply E ₂ for the radio receiver/tape recorder section and the power terminals of the tape recorder section 16, tuner section 17, and amplifier section 18. Therefore, the switch 15' is turned on only when the power supply control terminal ct reaches the reference voltage _VDD . By the way, the function switch 8 consists of first and second switch parts 8a and 8b having a radio contact R, a tape contact T, and a sleep contact S, and by a switching operation, both switch parts 8a and 8b are switched.
are switched in conjunction. In the first switch section 8a, the sleep contact S is connected to the common terminal of the radio/buzzer changeover switch 11, and the tape contact T is connected to the sleep contact S via the diode D for preventing backflow in the forward direction. , the radio contact T is grounded and the reference voltage V _DD is grounded via the play switch 9.
The common terminal CT is connected to the power supply control terminal ct of the power supply control circuit 15, and is also connected to the amplifier section 18 via a capacitor C for cutting DC current. Further, in the second switch section 8b, the tape contact T is connected to the tape recorder section 16, and the radio contact R is connected to the tape recorder section 16.
and sleep contact S are both connected to the radio receiver tuner section 17, and the common terminal CT is connected to the amplifier section 18. Next, the operation of the embodiment will be explained. First, operate knob 7 of function switch 8.
When set to the [TAPE] position, the common terminal CT of switch parts 8a and 8b is connected to the tape contact T, and at this time, if the play switch 9 is in the OFF state as shown by the solid line in Fig. 3b, , the power supply control terminal ct becomes open and the switch 15'
is held off, and the tape recorder section 16, tuner section 17, and amplifier section 18 are not supplied with power and are completely turned off. On the other hand, operation knob 7 of function switch 8
When the play switch 9 is set to the ``tape'' position and the play switch 9 is turned on as shown by the dashed-dotted line in Figure 3b, in order to perform recording or playback using normal tape recorder operation. The reference voltage _VDD is applied to the power supply control terminal ct via the play switch 9 and the first switch section 8a, and the switch 15' is turned on to supply power to the tape recorder section 16, tuner section 17, and amplifier section 18. , the monitor audio signal of the recording or playback of the tape recorder section 16 is input to the amplifier section 18 via the tape contact T of the second switch section 8b, and the amplifier section 1
Recording or playback monitor audio is output from the speakers connected to tape recorder section 1.
Normal tape recorder operation using 6 is performed. Next, when the operation knob 7 of the function switch 8 is switched to the [Radio] position, the common terminal CT of the switch sections 8a and 8b is connected to the radio contact R.
At this time, since the radio contact R of the first switch section 8a is grounded, the reference voltage V _DD is always applied to the power supply control terminal ct of the power supply control circuit 15.
is applied, and the tape recorder section 16, tuner section 17, and amplifier section 18 are constantly supplied with power. Since the radio broadcast sound signal from the tuner section 17 is input to the amplifier section 18 via the radio contact R of the second switch section 8b, the radio broadcast sound is output from the speaker, etc. Radio receiver operation is performed. Next, when the operation knob 7 of the function switch 8 is switched to the [SLEEP] position, the common terminal CT of the switch sections 8a and 8b is connected to the sleep contact S, and at this time, the tape recorder section 1
6 and turn on the play switch 9 to put the tape recorder section 16 into playback mode.
While the play switch 9 is on, that is, until the play switch 9 is turned off by the auto-stop function, the reference voltage V _DD is applied to the anode of the diode D via the play switch 9. By the way, due to the alarm operation described later, when the alarm time is reached, the output terminals co and bu of the clock LSI 12 are activated.
Unless an alarm signal or a buzzer signal is output from the clock LSI 12, both output terminals co and bu are in an open drain state and held at the negative power supply voltage of the clock LSI 12 at -1.5V. Therefore, when the alarm signal and the buzzer signal are not output, the diode D is turned on by the reference voltage _VDD via the play switch 9 until the play switch 9 is turned off, and the first switch section 8a is turned on. A reference voltage V _DD is applied to the power supply control terminal ct via the sleep terminal S of the power supply control terminal ct, and power is supplied to the tape recorder section 16, tuner section 17, and amplifier section 18. Since the radio broadcast sound signal from the tuner section 17 is input to the amplifier section 18 via the sleep contact S of the second switch section 8b, the play switch 9
The radio broadcast sound is output from the speakers etc. only while the switch is on, and a sleep operation is performed in which the play switch 9 is automatically turned off by the auto-stop function of the tape recorder section 16 to output the radio broadcast sound as a sleep timer. It will be done. Next, the operation knob 7 of the function switch 8 is switched to the [sleep] position, and the alarm time is set using the operation section 13.
In addition, the automatic changeover switch 10 is switched from the off contact OFF to the on contact ON, and the alarm cancel terminal ac of the watch LSI 12 is switched from the output off level state of the reference voltage V _DD to the output on level state (open drain state). When the alarm setting time is reached, a DC alarm signal at the V _DD level is output from both output terminals co and bu of the clock LSI 12.
For example, a buzzer signal of about 2KHz is output. Note that until the alarm time is reached, both output terminals co and bu are held in an open drain state within the clock LSI 12 and held at a negative power supply voltage of -1.5V. Further, the buzzer signal is a square wave signal biased with direct current so that the upper limit voltage (high level voltage) becomes the reference voltage _VDD . Then, when the alarm time is reached, if the radio/buzzer changeover switch 11 is switched to the buzzer contact B, the buzzer signal via the changeover switch 11 is shared via the sleep contact S of the first switch part 8a. It is output from terminal CT, and at this time,
Every time the buzzer signal reaches the reference voltage _VDD , the switch 15' is turned on to supply power to the tape recorder section 16, tuner section 17, and amplifier section 18, and
Since only the alternating current component of the buzzer signal is supplied to the amplifier section 18 via the capacitor C, the buzzer sound is output from a speaker or the like. Also, when the alarm time is reached, the radio/
When the buzzer changeover switch 11 is switched to the radio contact R, an alarm signal via the changeover switch 11 is sent to the sleep contact S of the first switch part 8a.
is output from the common terminal CT via
Switch 1 is activated by the reference voltage V _DD of the alarm signal.
5' is held on, and the tape recorder section 16,
The tuner section 17 and the amplifier section 18 are supplied with power, and the radio broadcast sound signal of the tuner section 17 is inputted to the amplifier section 18 via the sleep contact S of the second switch section 8b, and the radio broadcast sound is output from a speaker or the like. Note that since the alarm signal is a DC signal of the reference voltage _VDD , the alarm signal is transmitted to the first switch section 8a.
When the signal is output from the common terminal CT of the capacitor C, the signal is not output from the capacitor C to the amplifier section 18. Therefore, the operation knob 7 of the function switch 8 is switched to the [SLEEP] position, the alarm time is set, and the automatic changeover switch 10 is switched to the on contact ON position.
Set radio/buzzer selector switch 11 to buzzer contact B.
Alternatively, by selectively switching to the radio contact R, a buzzer sound or radio broadcast sound is outputted as an alarm at the alarm time, and an alarm operation is performed. By the way, the tape contact T of the first switch part 8a
A diode D between the and the sleep contact S switches and sets the operation knob 7 of the function switch 8 to the [SLEEP] position to perform the aforementioned sleep operation and alarm operation, and also switches the operation knob 7 of the function switch 8 to the [SLEEP] position to perform the aforementioned sleep operation and alarm operation. This is provided to prevent erroneous output of an alarm signal or a buzzer signal when the operating knob 7 of 8 is switched to the [TAPE] position. Then, set the operation knob 7 of the function switch 8 to the [sleep] position, and
When the above-mentioned alarm operation is set, a tape is loaded in the tape recorder section 16, and the play switch 10 is turned on, the radio broadcast sound is emitted by the sleep operation until the play switch 10 is turned off by the auto-stop function. After the play switch 10 is turned off, a buzzer sound or a radio broadcast sound is outputted by an alarm operation based on the buzzer signal or alarm signal when the alarm time is reached. That is, in the case of FIG. 4, the operation for each operating position of each switch 8, 10, 11 of the operating section is as follows.
The results are shown in Table 2 below.

[Effect of idea]

As described above, according to the tape recorder with clock/radio receiver of this invention, the normal tape recorder operation, radio receiver operation, sleep operation, and alarm operation can be selected by only operating the function switch 8. Only when the alarm operation is selected and the alarm operation is selected, the alarm operation can be turned on or off by operating the automatic changeover switch 10, and the radio broadcast sound and buzzer sound can be set by operating the radio/buzzer changeover switch 11. The number of operations is small, as all you have to do is select
Operation can be changed with simple and easy-to-understand operations.
Moreover, since it is only necessary to provide three switches, the function switch 8, the automatic changeover switch 10, and the radio/buzzer changeover switch 11, as the operation changeover switch, the configuration is simplified and inexpensive. This configuration significantly improves operability.

[Brief explanation of drawings]

Figure 1 shows the operating section of a tape recorder with a radio receiver, Figure a is a plan view of the function switch, Figure b is a front view of the play switch, and Figure 2 is a conventional clock/radio receiver. Figure a is a plan view of the function switch, figure b is a front view of the play switch, figures c and d are plane views of the standby switch and automatic changeover switch, and the third 5 to 5 show one embodiment of the tape recorder with clock/radio receiver of this invention, and FIGS. 3a and 3b are a plan view of the function switch of the operation section, a front view of the play switch, and FIG. c and d are plan views of the automatic changeover switch and radio/buzzer changeover switch, FIG. 4 is a block diagram of the operating circuit, and FIG. 5 is an internal wiring diagram of the power supply control circuit of FIG. 4. 8...Function switch, 8a, 8b...
...First and second switch parts, 9... Play switch, 10... Automatic changeover switch, 11... Radio/buzzer changeover switch, 12... Clock LSI,
15...Power control circuit, 16...Tape recorder section, 17...Radio receiver tuner section, 18...
Amplifier section, C...capacitor, D...diode.

Claims (1)

[Claims for Utility Model Registration] A tape recorder section 16 having an auto-stop function that automatically turns off the play switch 9 at the end of the tape, and a radio receiver tuner section 17;
an amplifier section 18; a power supply control circuit 15 that supplies power to the tape recorder section 16, the tuner section 17, and the amplifier section 18 by applying a reference voltage to the power supply control terminal ct; first and second output terminals co and bu which respectively output a DC alarm signal and a buzzer signal of an audio frequency whose upper limit voltage or lower limit voltage is set to the reference voltage; and outputs of the alarm signal and the buzzer signal. A clock LSI 12 having an alarm cancel terminal ac for on/off setting; an automatic changeover switch 10 that selectively sets the cancel terminal ac to an output on level or an output OFF level by switching; , bu selectively outputs the alarm signal and the buzzer signal from a common terminal.
and a radio contact R fixed to the reference voltage, a tape contact T to which the reference voltage is applied when the play switch 9 is turned on, and a sleep contact S connected to the common terminal of the radio/buzzer changeover switch 11. a first switch part 8a having a common terminal CT connected to the power supply control terminal ct, and provided in the forward direction between the tape contact T and the sleep contact S of the first switch part 8a,
A backflow prevention diode D that is turned on when the play switch 9 is turned on is provided between the common terminal CT of the first switch section 8a and the amplifier section 18, and supplies the buzzer signal to the amplifier section 18. A radio contact R and a sleep contact S to which the output audio signal of the tuner section 17 is input, and a tape contact T to which the output audio signal of the tape recorder section 16 is input. The common terminal CT is connected to the amplifier section 18, and the first switch section 8
Forms a function switch 8 together with a,
A second switch section 8b is provided which switches in conjunction with the first switch section 8a and selectively supplies the output audio signal of the tape recorder section 16 and the output audio signal of the tuner section 17 to the amplifier section 18. Tape recorder with clock and radio receiver.