REMOTE CONTROL TRANSMITTER AND TRANSMITTING-RECEIVING SYSTEM

Abstract

A remote control transmitting and receiving system for operating electric equipment with little operational misjudgment or malfunction. By setting a plurality of transmission codes of remote control signals of a plurality of remote control transmitters to different periods and by providing transmission order data in these transmission codes, even if transmission is carried out from a plurality of remote control transmitters completely simultaneously or with a slight time difference, it is possible to judge the transmission operation order accurately.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an overall view showing a transmitting-receiving system in accordance with an embodiment of the present invention.

FIG. 2 is a waveform diagram of a remote control signal of a remote control transmitter of FIG. 1 in the first case.

FIGS. 3A to 3G are waveform diagrams of transmission codes in the remote control transmitter of FIG. 1.

FIGS. 4A and 4B are waveform diagrams of remote control signals of the remote control transmitter of FIG. 1 in the second case.

FIG. 5 is a waveform diagram of a remote control signal of the remote control transmitter of FIG. 1 in the third case.

FIG. 6 is an overall view showing a conventional transmitting-receiving system.

FIG. 7 is a waveform diagram of a remote control signal in the first case of a conventional remote control transmitter.

FIGS. 8A to 8E are waveform diagrams of transmission code of a conventional remote control transmitter.

FIG. 9 is a waveform diagram of a remote control signal in the second case of a conventional remote control transmitter.

Claims

1. A remote control transmitter comprising: a transmitting unit configured to transmit a signal over a plurality of transmission periods, each transmission period having a predetermined length: anda control unit configured to generate the signal such that the signal comprises:a plurality of transmission codes, each transmission code transmitted, respectively, over one of the plurality of transmission periods and including a data portion, each data portion numerically changing regularly in each transmission period,

2. The remote control transmitter of claim 1, wherein each numerically changing data portion shows a regular numerical increase.

3. The remote control transmitter of claim 2, wherein the numerical increase is an increase of one in each period.

4. The remote control transmitter of claim 1, wherein the numerically changing data portion shows a regular numerical decrease.

5. The remote control transmitter of claim 4, wherein the numerical decrease is a decrease of one in each period.

6. A remote control transmitting system comprising: a plurality of remote control transmitters, each one of the remote control transmitters comprising:a transmitting unit configured to transmit a signal over a plurality transmission periods, each transmission period having a predetermined length, the predetermined length being different for each one of the plurality of remote control transmitters; anda control unit configured to generate the signal such that the signal comprises:a plurality of transmission codes, each transmission code transmitted, respectively, over one of the plurality of transmission periods and including a transmission order data portion.

7. The plurality of remote control transmitters of claim 6, wherein the transmission order data portion numerically changes regularly in each of the transmission periods for each respective one of the plurality of remote control transmitters.

8. A remote control transmitting-receiving system, comprising: a remote control transmitter configured to transmit a remote control signal, the remote control signal having a plurality of transmission codes, each transmission code transmitted, respectively, over one of a plurality of transmission periods having a predetermined length, each transmission code including a data portion numerically changing regularly in each transmission period; anda receiver for reading the transmission code of one of the plurality of periods from the remote control transmitter and calculating a transmission starting time from the predetermined length of the one of the plurality of transmission periods and the data portion numerically changing regularly in the transmission code.

9. The remote control transmitting-receiving system of claim 8, further comprising: a plurality of the remote control transmitters.wherein the predetermined length is different for each respective one of the plurality of remote control transmitters andthe receiver for reading the transmission code of one of the plurality of transmission periods from each of the remote control transmitter, is configured to calculate each transmission starting time from the predetermined length corresponding to each remote control transmitter and comparing the respective transmission starting times.