JPS6218816A - Remote control transmitter - Google Patents

Abstract

PURPOSE:To shorten the time of remote control signal input processing on a signal reception side by providing a signal control means which controls the interval and number of times of transmission of a pulse train determined with a push button switch and outputting the pulse train at time intervals or only several times even while the push button is operated continuously. CONSTITUTION:A sequential scanning signal outputted by a microcomputer 9 is outputted as a pulse train signal by the counting function, time control function, and parallel-series converting function of the computer 9 and sent in air by an electrooptic converting element 12. When the push button 15 is pressed, the state of an input line group 14 at this time is digitized. A button for outputting the signal several times and a button for intermittent output are discriminated by the combination of a numeral in sequential scan output and a numeral in input. It is decided whether an input button signal coincides with a button signal inputted right before it or not and the pulse train signal is outputted by as many times as determined according to the function of the push button or intermittently, so the processing time of the reception side is shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a transmitter for a remote control device used in television receivers, video tape recorders, video discs, and the like.

Prior Art FIG. 4 shows a conventional transmitter. In this transmitter, the clock generated by the oscillation circuit 2 is converted into a sequential scanning signal by the timing generation circuit 3 (in this example, it is a 5-phase sequential scanning signal), and when one of the push buttons in push button group 1 is pressed, Any one of the outputs of the five trees of the timing generation circuit 3 is connected to any one of the inputs of the key manual control circuit 4. From the input signals, a chattering/simultaneous press prevention circuit 5 extracts only the normal input and stores it in a shift register 6.Then, the pulse train generation circuit 7 converts the input signal into a pulse train signal, which is modulated by a modulation circuit 8 and sent to an electro-optical conversion element 12. By light〈
is converted into infrared rays) and emitted.

Transistors 10.11 are for current amplification.

In addition, in FIG. 4, each push button of the push button group 1 is omitted, and each matrix point of the output line group 13 of the timing generation circuit 3 and the input line group 14 of the key controller 4 has a fifth A push button switch 15 is interposed as shown in the figure.

Problems to be Solved and Attempted by the Invention In such a conventional configuration, the signal output from the transmitter is continuously output while the push button switch 15 is pressed, and the signal is output at the remote control signal receiver side. Eliminating necessary signals. In other words, the receiver side reads the control signal sent to the remote control 1 each time, repeatedly judges the content, and for example, if the instruction is to increase the volume, it will increase the volume at regular intervals. However, if a "power on/off" instruction is given when the power is in the auto state, the power will be turned on by recognizing the first "power on/off" instruction, and from the second time onwards, the power will be turned off and then turned on repeatedly. is configured not to run.

An object of the present invention is to provide a remote control transmitter that can reduce wasteful signal processing time on the receiver side.

Means for solving the problem Book 11 The remote control transmitter of the present invention sequentially scans several lines using a timing signal and detects the on state of several pushbutton switches connected to this line. A push button detection means and a pulse train means for converting the push button switch into a pulse train determined by each push button switch when the push button switch is in an operating state are provided so as to send out a pulse train corresponding to the operated push button switch. The present invention is characterized in that it is provided with a signal control means for determining the function of the push button switch that has been pressed, and controlling the transmission interval and number of times of the pulse train during the period in which the push button switch continues to be operated according to the determined function.

Function: With this configuration, the pulse train is output at intervals or only a few times even while the push button is being operated, so the remote control signal can be input on the remote control signal receiving side! l! It is possible to reduce the processing time.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 3. In addition, in FIGS. 4 and 5, the same reference numerals are given to those having the same functions, and the explanation thereof will be omitted.

In FIG. 1, 9 is a microcomputer, and FIG. 2 shows the flow of its internal processing. microcomputer 9
The sequential scanning signals outputted from the button are inputted into the microcomputer 9 again from the input line group 14 by pressing any pushbutton switch in the pushbutton group 1, and are processed by the microcomputer 9's counting function, time management function, and parallel-to-serial conversion function. The output signal is output as a pulse train signal, and the electro-optical conversion element 1
2 emits a pulse train signal into the air. This will be explained in detail using the processing flow shown in FIG. The output line group 13 that outputs sequential scanning signals is normally in a "HIT level" state.
According to the sequential scanning, only one signal line becomes 14LH level. Depending on the level of this progressive scanning signal line, the progressive scanning signal is numerically suppressed and temporarily stored in the storage means of the microcomputer 9 (a-1). After outputting the scanning signal (a-2), check whether any of the input II details 14 is at the "L" level and judge whether any push button switch 15 is pressed (a-3
)L, if it is pressed, converts the status of the input line group 14 at that time into numerical values (a-4).A functional meaning is assigned to each button in advance by the combination of the sequential scanning output numerical value and the input numerical value. Based on this functional meaning, we distinguish between buttons that output several times and buttons that output intermittently.We check whether the input button signal matches the button signal input immediately before this input. Judgment [a-5], and if the input is different, store the first information in the storage means for counting the number of outputs (a-6)
Output the L pulse train signal (a-7) and return to (a-1).

In (a-5), if the input signal and the button signal input immediately before this input match, it is determined whether the function of the push button switch is to output several times (a- 8). If the output is to be output several times, it is determined whether the output has already been output the prescribed number of times (a-9) L; if the output has been output the prescribed number of times, nothing is done and the process returns to (a-1). (a
-9), and if the specified number of times has not been reached, the memory value of the storage means for counting the number of outputs is set to '+1'' (a-10).
L, execute (a-7). On the other hand, if no match is detected in (a-8), check whether the function of the input pushbutton switch performs intermittent output (a-11), and if it performs intermittent output, further output is performed. The timing is determined by the microcomputer's time counting function (
a-12) L,, if it is the timing to output (a-7
). If it is not the timing to output at (a-12), do nothing and return to (a-1).

Note that when the push button switch is not pressed (a-3
), no match is detected, and in (a-13) the storage means for the number of outputs and the time counting function are initialized, and the process returns to (a-1).

Effect of Defense As explained above, the remote control transmitter of the present invention outputs a pulse train signal only the number of times determined by the function of the push button even if the push button switch is continuously pressed, or outputs the pulse train signal intermittently. In order to output
TV controlled by remote control signal,
For devices such as video, it is sufficient to process the incoming remote control signal as it is, and the processing time on the receiver side can be reduced compared to conventional devices that emit unnecessary pulse train signals. This is extremely advantageous in practical terms.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a block diagram of the main parts of FIG. 1, FIG. 3 is a flowchart of the microcomputer in FIG. 1, and FIG. 4 is a block diagram of a conventional example. FIG. 5 is a diagram showing the main part of FIG. 4. 1... Push button group, 2... Oscillation circuit, 9... Microcomputer, 12... Electro-optical conversion element agent Yoshihiro Morimoto Figure 7 Figure 2

Claims (1)

[Claims] 1. a push button detection means that sequentially scans several lines using a timing signal and detects the on/off states of several push button switches connected to the line; and when the push button switches are in an operating state, each of the push button switches and a pulse train means for converting the pulse train into a pulse train determined by the above, and is configured to send out a pulse train corresponding to the operated push button switch, and also determines the function of the operated push button switch and responds to the determined function. A remote control transmitter comprising signal control means for controlling the transmission interval and number of times of the pulse train during a period in which the push button switch is continuously operated.