JP2502122Y2 - Illuminated alarm clock - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alarm clock with illumination, and more particularly to an alarm clock that also serves as an illumination and alarm volume adjusting switch.

[0002]

2. Description of the Related Art In general, an alarm clock is available on the market that allows the volume to be varied and gives a wake-up alarm at a volume suitable for the user. On the other hand, regarding lighting, there are many things that illuminate the dial surface and alarm stop switch when an alarm occurs, those that can simply check the time with a night light switch, especially liquid crystal etc. that can change the illuminance according to the surrounding brightness. Proposed. In addition, there are various types of usage such as portable alarm clocks with flashlight-like lighting.

[0003]

[Problems to be solved by the invention] However, the one that illuminates the switch in conjunction with the alarm is for confirmation only, and the light amount is not very noticeable, but when you want to know the time at night, it is dark due to the voltage drop. In some cases, it may not be possible to achieve a sufficiently satisfactory lighting function. Since the lighting has different feelings depending on the person and the surrounding environment, if the lighting can be adjusted in the same manner as the alarm volume, a switch is required and the size becomes large. Therefore, an object of the present invention is to prevent an increase in size by using a knob for adjusting the alarm volume as well as adjusting the brightness of the illumination.

[0004]

In order to achieve the above object, the present invention provides a switch circuit for outputting a code signal corresponding to the position of the adjusting knob and a change in the code by latching the code in an alarm clock with illumination. When there is a detection signal and a code change detection circuit which outputs the code signal, and when the illumination is turned on with the generation of the detection signal or when an alarm is output, the code signal is latched in the first or second latch circuit, respectively. A code switching circuit, a lighting circuit that controls the brightness of illumination by a signal from the first latch circuit, and a sounding circuit that controls an alarm volume by a signal from the second latch circuit. And

[0005]

When the adjustment knob is operated while the illumination lighting signal is output and the illumination is on, a signal is output from the code change detection circuit and a latch instruction signal is output from the code switching circuit to the first latch circuit. The code signal is latched, and the illumination changes according to the code signal. Also, when the adjustment knob is operated while the alarm is sounding, a signal is output from the chord change detection circuit, the chord signal is latched in the second latch circuit, and the sound volume is changed corresponding to the chord signal. . The switching circuit does not operate and the latch data is held when the corresponding load is not operating and when a plurality of loads are operating.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an embodiment according to the present invention, and 2 is a switch circuit for detecting a position by a code plate, and a position code is read by an adjusting knob. The code plate is shown in Figure 2.
Each code changes according to the order shown in Fig.2, and the code at the intermediate position of each contact can read either value on either side. Output with the code converted to. A code change detection circuit 4 is composed of two latch circuits 6 and 8, an inverter 10 and a comparison circuit 12, and latches and compares the code signal of the code plate and the previously read code signal by the timing signal Φ. Circuit 1
2 outputs the code signal and also outputs a detection signal when they do not match.

A switching circuit 14 includes a switching circuit 16 and
The comparator circuit 1 is composed of two latch circuits 18 and 20, and the comparator circuit 1 is provided when a lighting instruction signal for lighting is input.
When the signal from the comparator 2 is generated, the code signal from the code plate is latched in the first latch circuit 18, and when the signal from the comparator circuit 12 is generated when the alarm generation instruction signal is generated, the code signal is generated. Is latched in the second latch circuit 20. When both the illumination and the alarm signal are generated, the latch operation is prohibited and the data is retained.

A lighting circuit 22 includes a decoder 24,
It is composed of a waveform shaping circuit 26, an analog switch 28, a booster circuit 30, and an EL illumination 32. The decoder 24 converts the code signal of the first latch circuit 18 into an illumination illuminance control signal, and the waveform shaping circuit. The output cycle of 26 is selected to change the illuminance of the illumination. Note that lamp illumination may be used instead of EL illumination.

Reference numeral 34 is a sounding circuit, which includes a decoder 36,
A decoder 36 composed of a waveform shaping circuit 38 and a sound generator 40 for converting the code signal of the second latch circuit 20 into an alarm volume control signal and selecting the output of the waveform shaping circuit 26 to change the alarm volume. Is.

Next, an outline of the operation will be described. When the adjustment knob is operated while the illumination and alarm loads are not operating, the code change detection circuit 4 outputs a signal because the code signals do not match. However, since the target load of the switching circuit 16 is not operating, a signal instructing latching is not output to the latch circuits 18 and 20, and the latch circuits 18 and 20 hold data.

When the lighting switch is operated, the lighting is turned on with the illuminance according to the signal from the first latch circuit 18. When the adjustment knob is operated during this lighting, the code change detection circuit outputs a signal because the code signals do not match. As a result, a signal for instructing latching is output to the first latch circuit 18 and the code signal corresponding to the operation of the adjustment knob is latched, so that the illuminance is varied according to the latched code signal. Become.

When the volume is adjusted, the same operation as described above is performed, and the switching circuit 16 causes the latch circuit that stores the code signal of the corresponding load to latch the signal from the comparison circuit 12 when only the corresponding load is operating. Will be instructed. Each load is variable by an output signal selected according to the code signal of this latch circuit. Incidentally, the adjustment knob may be in the form of converting the analog amount to digital instead of the code version.

Further, the comparison circuit 1 of the code change detection circuit 4
Latch circuits 18 and 2 composed of up-down counters capable of detecting forward and reverse rotations and a difference from the code signal latching 2 and counting by the signal from the switching circuit 16.
It may be configured to output a differential pulse signal to 0. At this time, of course, the up / down counter blocks the pulse input exceeding the upper limit and the lower limit.

[0014]

According to the present invention, when the code signal changes while only the corresponding load is operating, each load is instructed by instructing the latch circuit that stores the code signal of the corresponding load to perform the latch operation. Since it is variable according to the output signal selected according to the code signal of the latch circuit, only one adjustment switch is required and the size can be reduced.

[Brief description of drawings]

FIG. 1 is a circuit block diagram according to the present invention.

[Explanation of symbols]

 2 switch circuit 4 code change detection circuit 14 code signal switching circuit 22 lighting circuit 34 sounding circuit

FIG. 2 is an output signal of the code plate in the switch circuit.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-52-88074 (JP, A) Actually open 46-110088 (JP, U) Actually open 53-151962 (JP, U)

Claims (2)

(57) [Scope of utility model registration request] 1. An alarm timepiece with illumination, which includes a switch circuit for outputting a code signal corresponding to the position of an adjusting knob, a detection signal when the code is latched, and a code change detection for outputting the code signal. A circuit, a code switching circuit that latches the code signal in the first or second latch circuit when the illumination is turned on or an alarm is output in accordance with the generation of the detection signal, and
An alarm clock with illumination, comprising: a lighting circuit that controls the brightness of illumination by a signal from a latch circuit; and a sounding circuit that controls an alarm volume by a signal from the second latch circuit. 2. In an alarm clock with illumination, a switch circuit that outputs a code signal corresponding to the position of the adjustment knob, a detection signal when the code is latched and a change, and an operation direction signal and a change of the adjustment knob. Code change detection circuit for outputting a pulse signal for a minute, and the pulse signal for the change respectively when the illumination is turned on or an alarm is output in accordance with the generation of the detection signal.
A code switching circuit that adds and subtracts to and from the latch circuit in response to the operation direction signal, a lighting circuit that controls the brightness of illumination by a signal from the first latch circuit, and an alarm volume by a signal from the second latch circuit. An alarm clock with illumination, which is provided with a sounding circuit for controlling.