JPS6055794A - Display device - Google Patents

Abstract

PURPOSE:To discriminate easily whether the remote control is carried out in a correct way by using the end signal of a remote control signal to change the state of display. CONSTITUTION:An end signal (i) delivered from a DFF25 is used to discriminate whether the remote control data is effective or not. The signal (i) is set at a high level in case the validity of a remote control signal (a) is not decided. Then the signal (a) drives a transistor (TR)23 via a gate 20. Thus the 1st display element 21 emits the light. When the validity of the signal (a) is decided, the signal (i) is set at a low level. Then the signal (a) drives a TR24 via a gate 19. Thus the 2nd light emitting element 22 emits the light. In such a way, it is easily discriminated whether the remote control is carried out in a correct way.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a remote control signal reception status display device.

[Conventional configuration and its problems] As a remote control signal reception status display device,
Conventionally, a circuit as shown in FIG. 1 has often been used.

In Fig. 1, numeral 1 is a light receiving part for optically modulated remote control signals, which is currently widely used.
~control (Fi>';) and outputs it in the form of an electric signal.The output signal 2 of the light receiving section 1 is a pulse train modulated by pulse intervals. , converts this signal 2 into parallel data and forms an output corresponding to the data.Signal 2 is
For example, data ``1'' and 0'' are shown in FIG. 2(a).

If the interval is determined based on the reference time T as shown in FIG. 2(b), the remote control 1 to roll signal in FIG. 2(c) is determined to be data "101".

Now, in FIG. 1, if signal 2 is integrated by resistor R1 and capacitor C1, and a certain level is detected via resistors R2 and R3, transistor Q1 is made conductive and light emitting diode D1 is lit, then /j For the cleat control signal, for example, considering a signal consisting of 3 bits of data, a series of dots and subtractions as shown in FIG. 3 can be displayed.

However, in the circuit shown in Figure 1, even if the input remote control signal is not completed as shown in Figure 4 (a) (that is, the required number of bits does not exist), the issuing diode D1 will emit light. Furthermore, since light is emitted due to pulse noise as shown in FIG. 4(b), there is a drawback that an accurate reception display cannot be obtained.

[Object of the Invention] The purpose of this section is to accurately display a remote control signal so that the user can easily determine whether remote control is being performed correctly.

[Configuration of LzaLlight] The present invention provides a control signal discrimination circuit that outputs different outputs when a signal is not normally discriminated and when a signal is normally discriminated, and The system attempts to display the signal reception status by connecting display elements that emit light of different colors to each other.

DESCRIPTION OF EMBODIMENTS FIG. 5 shows an example of a remote control signal discrimination circuit, and FIG. 6 shows waveforms of each part of the circuit. In addition,
Each part of the circuit in FIG. 5 is indicated by a lowercase alphabet, and the corresponding waveform is shown in FIG.

When the remote control switch a as shown in Fig. 6(a) is operated manually, the glue flip-flop L1 knob 11.12
The NAND gate 13 detects the rising edge of the signal Fib, and applies the signal d to the counter 14 as a pulse. ) The J counter 14 takes in the setting data e by the signal \:d, and counts the clock [ by 4. When this count value exceeds the data e, the counter 14 outputs an overflow output signal 0, which is transferred to the shift register 15.
Add to.

The register 15 takes in the overflow output signal at the rising edge of the input signal a, shifts the data from 1 to 1, and obtains data 11. Furthermore, the 7J counter 14 is inputted by the pulse d generated by the human input signal 21,
Start counting again.

Now, when the input signal a is as shown in FIG. 6(a), for example, if the setting data e is set to 2.5Fxf, the overflow output signal of the counter 14 becomes as shown in FIG. 6, and the shift register 5 The data h taken in becomes '101' when the human power signal a is completed.Furthermore, if the human power signal a is composed of, for example, N pulses, the shift register 15 takes in the data of N pulses. When it is determined that the signal discrimination is complete, the counter 16 counts the signal d, the NAND gate 17 discriminates the value of N, and the signal d is
A completion signal i can be issued by the flip knob 25.

Also, when pulse train a stops midway, counter 1
8, the pulse train d does not arrive for a certain period of time, for example τ, and the count exceeds the set data j of the counter 18, resulting in an incomplete signal k as shown in FIG. . The signal port returns the counters 14 and 16 and the shift register 5 to their initial states. Also,
The counter 18 returns to its initial state by the gate signals of the signals i and d.

From the above, by using the completion signal i,
Can be overridden to determine whether remote control data is valid. As shown in the dashed line in FIG. 5, when the remote control signal a is not determined to be valid, e.g., using the signal i, the signal i is at a high level, and the signal i is at a high level. Signal a is the gate 20
By passing through and driving 1 to fungistor 23,
The first display element 11 emits light.

Furthermore, when the remote control signal a is determined to be effective, the signal i becomes low level, and the remote control signal a passes through the channels 1 to 19, drives the transistors 1 to 24, and displays the second display. The cord 22 is made to emit light.

[Effect of the invention] As described above, by making such a display,
It is possible to determine whether the remote control is operating normally and the operation of the remote control signal transmitter.

You can also judge how to pick and determine direction.

[Brief explanation of drawings]

Figure 1 is a conventional reception display circuit, Figure 2 is an example of a typical right control signal waveform, Figures 3 and 4 are display formats in a conventional display circuit, and Figure 5 is a remote control signal. An example of the controller 1 to roll signal 8 discriminating circuit and the display circuit of the present invention, FIG. 6 shows the timing of the circuit operation of FIG. 5, and FIG. 7 shows the waveform of the signal. 1... Light receiving section 3... Signal discrimination circuit 11.12...
・1] Flip 70 Tsubu 13... Nando Goo 1~1
4...Counter 15...Shift register 1G...
・Counter 18...Counter 20...Gate 21
．． 22...Display element 23.24...Transistor 25...D flip-flop Patent applicant Matsushita Electric Industrial Co., Ltd.
- Fig. 2 (a) Data digit - ``1--f1- HI H T (b) Ri-ta ゛0'' - digit] - ``l-(c) 4f9
1o1'-"--F----J--L-J--1-
---F-]-1 Figure 4 Figure 6 (h) oot oto tot (i) Figure 7 A 3 (a) J song Lllll+ +++L-i ′c (k)

Claims (1)

[Claims] The display circuit includes a circuit that receives a remote control signal and discriminates the signal, and a circuit that responds to the output of the discrimination circuit and displays the reception status of the signal in multiple colors. When the determined signal is not valid, a first color is emitted or blinks at regular intervals, and when the signal is determined to be valid, a second color different from the first color is emitted or [ A display device characterized by decreasing dots at regular intervals.