JPS631480Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a radio receiver with a clock/timer configured to switch and display the current time, timer time, and reception frequency on one display, and in particular, the timer display is performed. This invention relates to a radio receiver with a clock/timer configured to return to clock display when the radio power is turned off.

In recent radio receivers, the reception frequency is digitally displayed, and by incorporating a clock function, the current time and timer time can be digitally displayed on the display that displays the reception frequency by switching the display output. configured to display.

However, when displaying the current time, timer time, and reception frequency on one display in this way, there is an inconvenience because the display is configured so that any display can be switched at will. . In other words, when the radio power switch is turned on and the radio is being received, the timer display will be displayed in order to know the timer time, and if the radio power switch is turned off during that time, the timer time will continue to be displayed on the display. It turns out. Originally, it is sufficient that the timer time is displayed for a predetermined period of time, and if the timer time is displayed continuously, there is a risk that the user may mistake it for the current time, which is not preferable.

Therefore, the present invention was devised in view of this point.
This invention relates to a radio receiver with a clock/timer configured to display the current time if the radio power is turned off while the timer time is being displayed.

Embodiments of the present invention will be described below with reference to the drawings. 1
is the radio receiving section, and the received frequency data is AND
The signal is input to the display 4 via the gate 2 and the OR gate 3, and the received frequency is digitally displayed on the display 4. Reference numeral 5 denotes a clock section, in which current time data T ₁ is input to the display 4 via an AND gate 6 and an OR gate 3, and timer time data T of a timer function that controls the operating time of electronic equipment by a circuit (not shown). ₂ is input to the display 4 via the AND gate 7 and the OR gate 3. 8 is a display switching signal generation circuit that generates display switching signals S ₁ , S ₂ , _{S 3} in accordance with the output of the display selection key means 9;
S ₂ and S ₃ are connected to one input of the AND gates 7, 6, and 2, respectively.

FIG. 2 is a diagram specifically showing the display selection key means 9 and the display switching signal generation circuit 8. The display selection key means 9 includes the timer time display key 10, current time display key 11, radio power key 12 and reception It consists of a display key 13. On the other hand, the display switching signal generation circuit 8 is composed of flip-flops 14, 15, and 16 that generate the display switching signals S ₁ , S ₂ , and S ₃ , and the output of the timer time display key 10 is input to the set terminal S of the flip-flop 14 . It is also input to the reset terminals R of flip-flops 15 and 16 via OR gates 17 and 18. Then, the output of the current time display key 11 is OR
It is input to the reset terminal R of the flip-flop 14 via the gate 19, and is also input to the OR gate 20.
The signal is input to the set terminal S of the flip-flop 15 through the OR gate 18, and is further input to the reset terminal R of the flip-flop 16 through the OR gate 18. The output of the radio power key 12 is inputted to the OR gate 20 via the inverter 21 and the one-shot multivibrator 22 on the one hand, and to the reset terminal R of the flip-flop 14 via the OR gate 19, and on the other hand. Furthermore, it is input to the one-shot multivibrator 23, and the output of the one-shot multivibrator 23 is input to the reset terminal R of the flip-flop 14, 15 via OR gates 24, 19 and 24, 17, and the set terminal of the flip-flop 16. It is input to S. Further, the output of the reception frequency display key 13 is input to an OR gate 24. Note that the clock section 5 and the display switching signal generation circuit 8 are always energized regardless of whether the radio power key 12 is opened or closed.

Next, the operation of the present invention having such a configuration will be explained.

First, when the radio power key 12 is turned on, the one-shot multivibrator 23 is activated.
The flip-flop 16 is set via the OR gate 24, and the AND gate 2 is opened upon generation of the display switching signal _S3 , so that the frequency data received from the radio section 1 is transferred via the AND gate 2 and the OR gate 3 to the display. 4, and the reception frequency is displayed on the display 4. In this state, when the timer time display key 10 is turned on, the flip-flop 16 is reset via the OR gate 18, and when the display switching signal _S3 disappears, the AND gate 2 is closed and the received frequency data is cut off. At the same time, when the flip-flop 14 is set and the display switching signal _S1 is generated, the AND gate 7 is opened and the timer time data _T2 is introduced from the clock section 5 to the display 4 to display the timer time. Also, when the current time display key 11 is turned on, the flip-flop 14,
At the same time as 16 is reset, flip-flop 15 is set to generate display switching signal _S2 .
The AND gate 6 opens and the current time data _T1 is guided from the clock section 5 to the display 4, and the current time is displayed on the display 4. Then, when switching the time data display to the reception frequency display again, turn on the reception frequency display key 13, the flip-flop 14 or 15 is reset, and the flip-flop 1
6 is set, the reception frequency display is returned to once again upon generation of the display switching signal _S3 . Thus, when the radio power key 12 is turned on, the display can be changed arbitrarily by operating the timer time display key 10, the current time display key 11, and the reception frequency display key 13.

Next, when the radio power key 12 is turned OFF, the output of the inverter 21 is changed from low level to high level, and the one-shot multivibrator 22 is driven to reset the flip-flop 14 or 16 and set the flip-flop 15. , display switching signal S ₁ or S ₃
disappears and the display switching signal _S2 is generated, before the radio power key 12 is turned off.
Even if the display 4 is displaying the reception frequency or timer time, it is always switched to displaying the current time.

As mentioned above, the clock/timer radio receiver of the present invention is configured so that when the radio power is turned off while the timer time is displayed on the display, the timer time is displayed as the current time. There is no risk of mistaking it for the time, and it has an extremely practical effect.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the configuration of a radio receiver with a clock/timer according to the present invention, and FIG. 2 is a diagram showing the main parts of FIG. 1 in detail. DESCRIPTION OF SYMBOLS 1... Radio receiving section, 4... Display device, 5... Clock section, 8... Display switching signal generation circuit, 9... Display selection key means, 10... Timer time display key,
11...Current time display key, 12...Radio power key, 13...Reception frequency display key.

Claims (1)

[Scope of utility model registration request] a clock section that generates timer time data and current time data; a radio reception section that generates reception frequency data by operating a radio power key; and a display that displays the timer time data, current time data, and reception frequency data. , display selection key means including the radio power key and operated to display the timer time data, current time data, and reception frequency data on the display; A flip-flop group that exclusively generates and stores display switching signals for time data and received frequency data, and the timer time data display switching signal, current time data display switching signal, and received frequency data display of the flip-flop group. a matching circuit that matches the switching signal with corresponding display data from the clock section and the radio receiving section, and supplies display data exclusively to the display device upon detecting a match; and a matching circuit that cuts off the radio power key. a detection means for detecting, and a forcing means for forcibly resetting the flip-flop of the timer time data and the flip-flop of the receiving frequency data and forcibly setting the flip-flop of the current time data upon detection of the interruption of the detection means. Radio receiver with clock and timer.