JPH03117100A - Remote control transmitter - Google Patents

Abstract

PURPOSE:To constitute the apparatus which becomes an object so that a command signal of the next key of a power source key can be received surely by lengthening a period until the next command signal is transmitted after transmitting a command signal of a power source key, when key data is the power source key. CONSTITUTION:When an abbreviated key Ki is depressed, whether key data fetched from a memory 15 is key data of an operating key Ki for turning on a power source of an object apparatus or not is discriminated. At that time, after waiting for the time corresponding to a period until a command signal of a remote control comes to be received after a power source of its apparatus is turned on, a command signal converted from the next key data is transmitted. When the key data is key data of other operating key, after waiting for the time corresponding to a period until the next command signal comes to be received, a command signal converted from the next key data is transmitted. In such a way, when the abbreviated key is depressed, the command signal is transmitted at an optimum time interval.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a remote control transmitter.

[Summary of the invention]

This invention enables a remote control transmitter to control the transmission of a command signal according to the content registered in a shortcut key, thereby making it possible to use an appropriate remote control.

[Conventional technology]

For example, if you want to play back a VTR from a state where you were previously watching TV, turn on the power of the I VTR.

It sets the VTR to playback mode.

■ Switch the TV to external input mode.

A series of key operations are required. However, such key operations are complicated and troublesome.

Therefore, some remote controllers have a commander (transmitter) equipped with an abbreviated key (one-touch key), and a series of key operations can be registered in this abbreviated key.

That is, in the above case, 1. Switch the mode switch of the commander to storage mode.

2. Press the shortcut key among the commander operation keys.

3.Press the 1st key among the commander operation keys.

4. Press the ■ key among the commander operation keys.

5. Press the ■ key among the commander operation keys.

6. Press the shortcut key again among the commander's operation keys.

7 Return the commander's mode switch to normal mode.

When you perform this key operation, the commander abbreviation key is I.
The key operations in items ~■ are registered.

Then, when such registration is being performed, when the abbreviation key of the commander is pressed, the command signals when the key operations in items 1 to 2 are performed are sequentially transmitted from the commander.

Therefore, by utilizing this shortcut key, it is possible to put an AV device or the like into a desired operating mode with a single key operation.

[Problem to be solved by the invention]

By the way, when the commander transmits multiple command signals in succession, if the transmission interval of the command signals is about 15 h seconds, the device targeted by the remote control will be able to correctly receive the command signals even if the command signals are continuous. I can do it.

However, in devices such as television receivers and VTRs, it takes some time after the power is turned on for each part to stabilize or for each part to initialize, and the command to turn on the power takes some time. For a zero period of about 800 msec after receiving the signal, the next command signal cannot be accepted.

For this reason, in a commander that has an abbreviated key, when transmitting the command signals in items I to ■ according to the abbreviated key, first send the power-on command signal in item 1, and then send the command signal for the playback mode in the next item ■. 8 before sending
A 0 period signal interval of about 00 msec is required.

However, with such a transmission interval, a transmission interval of 800 msec is still consumed even when transmitting the command signal in item (■) and then the mode switching command signal in item (■), which reduces the overall efficiency. Movement becomes sluggish.

Furthermore, even when a series of other key operations are registered to the short key of this commander, the transmission interval of each command signal is 80
The time is 0 msec, and the overall operation becomes sluggish.

However, when the shortcut key is pressed, if the time interval between sending one command signal and sending the next command signal is shortened to 150ms, the next command signal to turn on the power will be The command signal will no longer be accepted.

This invention attempts to solve these problems.

[Means to solve the problem]

Therefore, in the present invention, when the shortcut key is pressed, it is determined whether the key data retrieved from the memory is the key data of the operation key that turns on the power of the target device, and the memory If the key data extracted from is the key data of an operation key that turns on the power of the target device, the period from when the power of the device is turned on until it starts accepting command signals from the remote control. After waiting for a time equivalent to In the case of key data, the device waits for a period of time equivalent to the period from when it accepts a command signal other than the command signal from the remote control that turns on the power until it begins accepting the next command signal. , a command signal converted from the following key data is transmitted.

[Effect]

When the shortcut key is pressed, command signals are sent at optimal time intervals.

〔Example〕

FIG. 2 shows an example of a commander, the main part of which is composed of a one-chip microcomputer. That is, (11) is a 4-bit CPU, (12) is a ROM in which the program is written, (13) is a RAM for a work area, (14) is a ROM for a table, (15)
indicates the RAM for short key registration, and these memories (1
2) to (15) connect to the CP via the system bus (19).
Connected to U (11).

In addition, Ki (+=1 to n0, where n is 80, for example) indicates various operation keys (and mode switches), and these keys Ki are connected to the output port (21) and input port (22).
A dynamic scan is performed, and the key output (key data) is determined by the CPU (11).

Further, (25) is a command signal transmitting element, in this example, since it is an infrared remote controller, it is an LED that outputs the infrared light. A command signal (remote control signal) is supplied to the LED (25) from the bus (19) through the output port (23) and the drive amplifier (24).

Further, the ROM (12) is written with, for example, a transmission routine (30) shown in FIG. 1, and the ROM (14) is provided with a table for converting the output (key data) of the operation key Ki into a command signal. ing.

Further, RAM (15) is a memory for a table for storing operation keys registered as shortcut keys, and its data structure is, for example, as shown in FIG. 3. That is, this RAM (15) has a capacity of 4 bits x 33 addresses, and in this case, for simplicity, the addresses of RAM (15) are assumed to be addresses 0 to 32.

In the case of items I to ■ above, the source number indicating the VTR is placed at the 0th address, and the key Ki is placed at the 1st and 2nd addresses.
The key number (key data) of the key to turn on the VTR, the source number indicating the VTR at address 3, and the source number indicating the VTR at address 4.
The key number of the key that sets the VTR to playback mode in the key Ki at address ~5, the source number indicating the TV receiver at address 6, and the external input of the TV receiver of the key Ki at addresses 7 and 8. Key number of key to switch to mode, 9th to 1st
A code indicating the end of data at address 1 (for example, data
) is written.

In other words, address 3 is one set, and this one set corresponds to one of the operation keys Ki.The source number for identifying the device to be controlled by the remote controller is stored at the first address, and the operation key is stored at the remaining addresses. The key number (key data) of the operation key when performing a remote control operation of Ki is stored.

Note that to store key data in this way, for example,
When steps 1 and 2 above are executed, the RA for the work area
Enter write mode for M (13) and write from 3 to 5
When the term is executed, its key data is stored in RAM (1
3) in order, and when steps 6 and 7 are executed, the RA
The key data written in M (13) is transferred to RAM
(15) and write an end code at the end.

Then, when the key Ki is pressed, the routine (30) is executed. That is, when the key Ki is pressed, the routine (3
0) starts from step (31), and then in step (32), by checking the key data of the pressed key, it is determined whether the pressed key is an abbreviated key, and the abbreviated key is If not, the process proceeds from step (32) to step (41), and in step (41), the process corresponding to the pressed key is performed. For example, when a key to switch channels on a television is pressed, the key data is converted into a channel switching command signal by referring to the table in the ROM (14), and this command signal is sent from the baud (23) to the amplifier. (24) through L E
D (25), where it is converted into infrared light and transmitted to a television receiver (not shown), after which step (
42) ends this routine (30).

However, when the pressed key is a shortcut key, the process proceeds from step (32) to step (51), and in this step (51), the address pointer that specifies the address of RAM (15) is changed to RAM ( 15) is set to the start address "0", and then the step (
In 52), the key data at "address indicated by pointer AP" to "address indicated by pointer +2" of RAM (15) is read out.

Next, the process proceeds to step (53), which step (
In step 53), it is checked whether the key data read in step (52) is an end code, and if it is not an end code, that is, if it is the key data of an operation key registered as a shortcut key, the process proceeds to step ( Step 53) proceeds to step (61).

Then, in this step (61), it is checked whether the read key data is the key data for the key that turns on the power. ), the process proceeds from step (61) to step (62), and in step (62), by referring to the table in ROM (14), it is converted into a command signal to turn on the power of the device indicated by the pointer. and this command signal is
E D (25).

Subsequently, the process proceeds from step (62) to step (63).
In this step (63), the process waits for a period of 800 msec, for example, from when the device is turned on until it starts accepting command signals from the remote control. (63) to step (
The process proceeds to step (64), where the pointer 8P is incremented by "3", and then the process returns to step (52).

Further, in step (61), if the read key data is not the key data of the key that turns on the power (for example, in the case of item ■, ■), the process is performed in step (61).
) to step (72), and this step (72)
By referring to the table R,OM (14), the key data is converted into a corresponding command signal, which is transmitted by the command signal power LED (25).

Subsequently, the process proceeds from step (72) to step (73).
In this step (73), the period from when the device receives a command signal other than the remote control command signal for turning on the power until it receives the next command signal is set, for example, 150 msec. A time wait is performed, and then the process proceeds from step (73) to step (64).
The process returns to step (52).

Thus, when the shortcut key is pressed, RAM (15)
The key data registered in the device is sequentially read out, converted into a command signal, and then sent to the target device.

Then, when all the key data is read out from RAM (15), the end code is read out next, but when this end code is read out, this is executed in step (53).
), the process proceeds from step (53) to step (42) and ends this routine (30).

As described above, when a shortcut key is pressed, command signals generated when operating keys registered to the shortcut key are pressed are sequentially transmitted.

At this time, when the command signal to turn on the power is transmitted, the transmission interval until the transmission of the next command signal is set to, for example, 800 msec in step (63), and the command signal other than the command signal to turn on the power is When a command signal is transmitted, the transmission interval until the transmission of the next command signal is set to, for example, 150 msec in step (73).

Thus, in this invention, when key data registered in a short key is retrieved, it is checked whether the key data is a power key, and if it is a power key, a command signal for the power key is sent. Since the period between sending the next command signal is lengthened,
The target device can reliably accept the command signal of the key following the power key.

Furthermore, when a key other than the power key is pressed, the period until the next command signal is transmitted is shortened, so the overall operation does not slow down.

Therefore, no matter what operation keys are registered in the shortcut key and in what order, the target device can be operated reliably and quickly.

In addition, in the above description, a plurality of abbreviation keys can be provided. Also, ROM (12) and (14), RAM (1
3) and (15) can each be a common memory. Further, the present invention can also be applied when the commander has a learning function, that is, when the command signal of another commander can be registered in the own operation key. In that case, the command signal to turn on the power is not necessarily registered as the key that turns on the power among the own operation keys, so the command signal to turn on the power of each manufacturer's commander When you store a command signal in advance and register another commander's command signal to your own operation key, compare that command signal with the stored command signal, and if they match, register that command signal. All you have to do is remember that the key that appears is the key that turns on the power.

〔Effect of the invention〕

In this invention, when key data registered in a short key is retrieved, it is checked whether the key data is a power key, and if it is a power key, a command signal for that power key is sent, and then the next key data is retrieved. Since the period until the command signal is sent is lengthened, the target device can reliably accept the command signal of the key next to the power key.

Furthermore, when using a key other than the power key, the period until the next command signal is sent is shortened, so the overall operation does not slow down.

Therefore, no matter what operation keys are registered in the shortcut key and in what order, the target device can be operated reliably and quickly.

[Brief explanation of drawings]

FIG. 1 is a flow chart of an example of this invention, FIG. 2 is a system diagram of an example of this invention, and FIG. 3 is a diagram for explaining the same. (11) is CPU, (12), (14) are ROM, (1
3) and (15) are RAM, (25) is a command signal transmission element, (30) is a transmission routine, and Ki is an operation key. Agent Hidemori Matsukuma - 1-4 B Tonasource N. Key No. (J: (f[)) Key No. (lower up) Source N. U1-No (J: I![) ~-No (lower in) Source N. Key No. (upper up) U1 -No (lower I'fI) FH FH JP-A-3 117100 (7) VTR's electricity display t 1 article 5 coat

Claims (1)

[Claims] A plurality of operation keys, a shortcut key, a conversion circuit that converts the key data of the operation keys into a command signal for a remote control, and a command signal converted by the conversion circuit as a target for the remote control. It has a transmitting element that transmits data to the device, and a memory that stores key data of an operation key registered as a shortcut key among the operation keys, and when the shortcut key is pressed, data is stored from the memory to this. sequentially extracting key data from the target device, sequentially converting the extracted key data into corresponding command signals by the conversion circuit, supplying the converted command signals to the transmitting element and transmitting them to the target device; Transmission of a remote controller that determines the key data retrieved from the memory when the shortcut key is pressed, and transmits the next command signal at a predetermined transmission interval according to the key data. Machine.