JPH05130680A - Remote control device - Google Patents

Abstract

PURPOSE:To make it possible to sharply increase the number of keys to be stored in a memory and to completely drive a remotely controlled apparatus. CONSTITUTION:A receiver 11 receives a remote control signal corresponding to an optional key input from an opposite side remote control device, at least the format of the remote control signal is analyzed by a remote control signal analyzing circuit 12 and data corresponding to the analyzed format are stored in a memory part 13 in the most efficient format.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control device for operating a plurality of electronic devices and the like from remote positions.

In general, many television receivers, video tape recorders (VTRs), satellite broadcasting (BS) channel selection devices, etc. are equipped with a remote control device that enables operation from a distant position. .. Then, for example, when reproducing the VTR, the user first turns on the power of the television receiver with the remote control device dedicated to the television receiver, and also turns on the reproduction button switch to start the reproduction. The remote control device dedicated to each device was used properly to operate each device.

However, with the development of AV (audiovisual) equipment in recent years, for example, in addition to ordinary television receivers, a plurality of high-definition television receivers, video tape recorders of various formats, so-called CD players, etc. The number of users who own the device is increasing. In such a situation, as described above, it is very troublesome to properly use the remote operation device provided in each device and operate each device. Therefore, there is known a remote control device having a so-called learning function that can store a plurality of remote control devices for each device by storing an operation signal for each remote control device. There is. By using the remote operation device having the learning function, it is possible to save the troublesome work of properly using the plurality of remote operation devices.

Specifically, a remote control signal of each remote control device of each device is transmitted to the learning type remote control device by light, and the learning type remote control device receives the remote control signal through the receiving section. To do. The above learning type remote control device samples the received remote control signal at a certain fixed period, and based on the data, examines and learns what kind of signal waveform pattern the received remote control signal has.
Further, when sending a remote control signal to a controlled device such as each of the above-mentioned devices, an original signal is created from the learned data and sent.

[0005]

By the way, as described above, the conventional learning type remote control device samples the input remote control signal at a certain fixed period and advances the learning based on the data. In this case, since the data is not decoded, but the combination of the pulses is observed and stored, there is no distinction in any form. That is, first of all, raw data which is not processed at all is stored in a memory, and then this raw data is taken out and finally processed in a form that can be stored in a memory of a designated key (a kind Data compression processing). As a concrete example of the processing contents at this time,
First, the same pulse widths are put together. Up to now, the pulse width time data has been stored in the order of the signals until now, for example, as a combination of symbols such as ABAC ... It is a process that has a data table.

Next, the structure of the data will be examined. This is a single-shot signal if the signal ends halfway during the data acquisition, and is transferred to the memory of the specified key as it is, or otherwise a process of finding a repeat is performed. If it finds a repeat, it remembers only that repeat. Although data is compressed to some extent by such processing, it uses only the data area of the memory because it only analyzes the sampled raw data and performs simple data compression processing. Thirty
It was possible to store only as few data as 127 keys at most, or at most 127 keys. Also, in the case of so-called toggle bits, the learning function could not be used. In addition, the waveform may not work due to a delay in the data reading time during transmission.

Therefore, the remote control device according to the present invention has been made in view of the above situation, and an object thereof is to provide a remote control device capable of increasing the number of keys stored in a memory.

[0008]

A remote control device according to the present invention is a remote control device for learning for each corresponding key based on a signal transmitted in response to a key operation from a remote control device on the other side. A receiving unit that receives a transmission signal corresponding to an arbitrary key input of the remote control device on the other side, a remote operation signal analyzing unit that analyzes at least the format of the remote operation signal received by the receiving unit, and the remote operation signal analyzing unit. The memory unit to which the analysis data from is written, the code data selecting unit that selects the code data corresponding to the key input, the analysis data from the remote operation signal analyzing unit and the code data from the code data selecting unit are supplied. A memory control unit for controlling writing and reading of the memory unit while associating the analysis data with the code data; and the memory control unit. A remote operation code generation circuit is provided, which is supplied with analysis data read from the memory unit in association with the supplied code data and generates a remote operation code. To do.

Here, when the remote operation signal analyzing unit analyzes the remote operation signal, a plurality of format patterns already adopted by each maker (company) stored in the storage unit are used. Therefore, the ability required for analysis is low.

For example, the company can be specified by the time length of the guide pulse of the above format pattern and the total number of bits of the data code and the category code. Therefore, data compression processing can be performed by using this format pattern. In addition to this, data compression processing can also be performed by classifying input data into repeated frames of a format pattern, data length, data pattern, carrier width, mode number, etc. ..

[0011]

The remote control device according to the present invention analyzes at least the format of the remote control signal from the remote control device of the other party by an arbitrary key operation and discriminates at least the format, and the code data is most efficient according to the discriminated format. Since it is stored in the memory unit in a good form, the number of keys stored in the memory unit can be increased.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a remote control device according to the present invention will be described with reference to the drawings. FIG. 1 is a block circuit diagram of an embodiment of a remote control device, and a receiver 11 that receives a transmission signal in response to an arbitrary key input of the remote control device on the partner side.
And a remote control signal analysis circuit 12 for analyzing at least the format of the remote control signal received by the receiver 11.
A memory section 13 in which analysis data from the remote operation signal analysis circuit 12 is written; a key operation section 14; and a key reading circuit 15 for reading which key is input by a key operation in the key operation section 14. The code data selection circuit 16 for selecting code data corresponding to the key input read by the key reading circuit 15, the analysis data from the remote operation signal analysis circuit 12, and the code data from the code data selection circuit 16 The memory control circuit 17 that is supplied and controls the writing and reading of the memory unit 13 while associating the analysis data with the code data, and the code data supplied to the memory control circuit 17 in association with each other. A remote control code that is supplied with analysis data read from the memory unit 13 and generates a remote control code. And de generation circuit 18, composed of a LED drive circuit 19 light emitting diodes 20.

In FIG. 1, a remote control signal received by the receiver 11 according to an arbitrary key input from the remote control device on the other side is supplied to a remote control signal analysis circuit 12 to analyze a format pattern. The company, product and operation of the controlled device are specified from this format pattern.

The format pattern has a category code and a key data code, which are stored in the memory section 13 as a format number, a category code number and a data code number, respectively. This storage is performed while the address is controlled by the memory control circuit 17 to which the analysis data from the remote operation signal analysis circuit 12 is supplied.

Next, when the user uses this remote control device, the key pressed by the key operation unit 14 is read by the key reading circuit 15, and the code data corresponding to the read key is read by the code data selecting circuit 16. The selected code data is supplied to the memory control circuit 17, the address is determined, and the analysis data stored in the memory unit 13 is read out. The analysis data read from the memory unit 13 is supplied to the remote operation code generation circuit 18 to generate a remote operation signal. This remote control signal is transmitted from the light emitting diode 20 to the controlled device via the LED drive circuit 19.

Here, the analysis data from the remote operation signal analysis circuit 12 written in the memory unit 13 of the present embodiment includes the format number, category code number and key data of the remote operation signal received as described above. The code number. These formats, category codes,
The key data code will be described with reference to the drawings.

FIG. 2 is a waveform diagram showing a basic configuration example of the above format. In Fig. 2, the format configuration is guide pulse G _P + key data code D _C (7 bits).
It is an example of + category code K _C (5 bits).

In FIG. 2, the time length of the guide pulse G _P is 2.4 ms. The time length of the guide pulse G _P differs depending on the format of each maker,
Some manufacturers do not have the guide pulse G _P. The data code D _C has 7 bits, and in this example,
It is “1010101”. This data code D
_C is a VTR, for example, "play", "stop"
It is a code that specifies operations such as. Category code K _C
Has 5 bits and is “00001” in this example. This category code K _C is, for example, VTR, T
It is a code that specifies a product such as V. The data code D _C and the category code K _C differ for each manufacturer, but may have the same bit number for each manufacturer. However, the data code D _C and the category code K _C
And the total number of bits (12 bits in the example of FIG. 2) differ depending on the manufacturer.

FIG. 3 is a schematic diagram showing the structure of the above format, and shows three format structures A, B, and C. Guide pulse G _P with different guide pulse time lengths for A, B, and C formats
However, the order of the data code D _C and the category code K _C that follow is different, and the reverse data code D _C ^* and the reverse category code K _C ^*, which are their reverse codes, are also arranged in a different order. ing.

Here, for example, the remote control device of the opposite side repeatedly transmits a remote control signal having the above-mentioned transmission format for, for example, 3 frames, and for example, 2 frames of the remote control signal of the remote control device of the present invention on the receiving side. If the embodiment can be received, the remote control signal analysis unit 12 can analyze the specific format.

The format analysis in the remote operation signal analysis circuit 12 of the embodiment of the remote operation device according to the present invention shown in FIG. 1 will be described with reference to a flowchart. Figure 4
It is a flowchart of the format analysis of a remote control signal. In FIG. 4, first, when the remote operation signal is received, a step S31 decides whether or not the transmission format of the remote operation signal has been decided by the guide pulse. If NO is determined in the step S31, a step S32 is performed.
Then, the time length of the guide pulse G _P is specified, and the process returns to step S31. The determination based on the time length of the guide pulse G _{P in} step S32 can be made based on that the time length of the guide pulse G _P for each format is known in advance. For example, D format from 13 ms to less than 15 ms, E format from 12 ms to less than 13 ms, 6 m
For s or more and less than 12 ms, the format can be substantially limited by the time length of the guide pulse, such as F format. When YES (determined by the guide pulse) is determined in step S31, the process proceeds to step S33. This step S33 decides whether or not the transmission format has the guide pulse G _P. When YES (there is no guide pulse G _P ) is determined in step S33, the process proceeds to step S34, and the determination is made based on the total number of bits of the data code D _C and the category code K _C of the transmission format. In S35, switching of pre-program data is selected, and the flow ends. On the other hand, NO in step S33.
If it is determined that there is a guide pulse G _P , the process proceeds to step S36, and the data code D of the corresponding format is obtained.
The total number of bits of _C and category code K _C is confirmed. If NG is determined in this step S36, the process returns to step S31, and if it is determined to be OK, the process proceeds to step S35, and preprogram data switching selection is performed according to the determination result. In steps S34 and S36, the total number of bits of the data code D _C and the category code K _C is used for determination and confirmation. The total number of bits is, for example, 12 bits in A format and 22 bits in advance. The B format and 24 bits are defined as the C format.

That is, the company is specified by the format configuration, the manufacturer is identified by the category code, and the operation is identified by the data code. The format has 8 bits, the category code has 16 bits, and the data code has 16 bits. A total of 40 bits is the number of bits required for one key. For example, if the number of keys is 16, 16 × 40 = 640 bits are required. However, in reality, once one format and category are determined,
These can be made common, and 16 × 16 + 8 + 16 = 288 bits are sufficient, and there is a margin in memory capacity. In other words,
The number of keys that can be stored in the memory unit can be increased.

Therefore, in the embodiment of the remote control device according to the present invention, the number of analysis data to be stored in the memory section can be increased. That is, the number of keys stored in the memory unit can be increased.

The remote control device according to the present invention is not limited to the above embodiment, and the transmission format is not limited to the three types shown in FIG. There are several types. Further, when the transmission format cannot be limited only by the frame structure, the frame period, the carrier frequency or the like may be used.

[0025]

According to the remote control device of the present invention, the number of keys stored in the memory unit is obtained by performing at least format analysis of the remote control signal transmitted according to the corresponding key operation from the remote control device on the partner side. Can be increased and the signal transmitted can fully operate the controlled device.

[Brief description of drawings]

FIG. 1 is a block circuit diagram of an embodiment of a remote control device according to the present invention.

FIG. 2 is a waveform diagram of a format stored in a first storage unit of the remote control device according to the present invention.

FIG. 3 is a diagram showing a plurality of examples of the format shown in FIG.

FIG. 4 is a flowchart illustrating format analysis of a remote control signal analysis unit shown in FIG.

[Explanation of symbols]

 11 ... ・ Light receiving unit 12 ... Remote operation signal analysis unit 13 ... Memory unit 14 ... Key operation unit 15 ... Key reading unit 16 ... Code data selection unit 17・ ・ ・ ・ Memory controller 18 ・ ・ ・ ・ Remote control signal generator 19 ・ ・ ・ ・ LED drive circuit 20 ・ ・ ・ ・ Light emitting diode

Claims (1)

[Claims] 1. A remote control device for learning for each corresponding key based on a signal transmitted in response to a key operation from the remote control device of the other side, in response to an arbitrary key input of the remote control device of the other side. Receiving section for receiving the transmitted signal, a remote operation signal analyzing section for analyzing at least the format of the remote operation signal received by the receiving section, a memory section in which analysis data from the remote operation signal analyzing section is written, and a key input Is supplied with the code data selection unit for selecting the code data corresponding to, the analysis data from the remote operation signal analysis unit, and the code data from the code data selection unit, while associating the analysis data with the code data. The memory control unit that controls writing and reading of the memory unit is associated with the code data supplied to the memory control unit. A remote control device comprising: a remote control code generation circuit which is supplied with analysis data read from the memory section and generates a remote control code.