US 7,031,396 B2Granted

Transmission and reception method with multiple remote controllers

AssigneeSMK Corporation

InventorKenichi Miwa

Life of this patent

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Abstract

A transmission and reception method permits simultaneous use of multiple remote controllers at the same frequency to a single receiver without mutual interference. A transmission period consists of a transmission enabled period for transmitting a transmission signal from a remote controller, and a transmission disabled period for disabling the signal transmission. Individual remote controllers can repeat the transmission. For the individual remote controllers, one period of the transmission period is 2i (“I” is a natural number equal to or more than 3, and is set to a proper number different from one channel to another) times a unit transmission period. The transmission period consists of a transmission enabled period for one fourth of one period, a transmission disabled period for one eighth of one period, a transmission enabled period for one eighth of one period, a transmission disabled period for one fourth of one period, a transmission enabled period for one eighth of one period, and a transmission disabled period for one eighth of one period in this order. The sequence in the foregoing sentence is repeated continuously.

Claims2

Dependent claims

A transmission and reception system comprising:

a plurality of remote controllers;
each of said plurality of remote controllers including means for transmitting transmission signals;
transmission signals of each of said plurality of remote controllers having a single transmission period (ST) that is different from transmission periods for all others of said plurality;
said transmission periods consisting of equal unit transmission periods (TT) for individual channels;
a single receiver for receiving said transmission signals from said individual remote controllers,
said unit transmission period (TT) consists of a data transmission period (DTa) and a data stop period (DTb);
said data stop period (DTb) is at least as long as said data transmission period (DTa);
said single transmission period (ST) for said individual remote controllers is 2i times (where “i” is a natural number equal to or more than 3, and a unique number that is equal to a proper number different for each channel from all other channels) said unit transmission period (TT);
said single transmission period consists of transmission enabled periods (STa) and transmission disabled periods (STb) in a sequence of said transmission enabled period (STa) for 2i−2 times said unit transmission period (TT), said transmission disabled period (STb) for 2i−3 times said unit transmission period (TT), said transmission enabled period (STa) for 2i−3 times said unit transmission period (TT), said transmission disabled period (STb) for 2i−2 times said unit transmission period (TT), said transmission enabled period (STa) for 2i−3 times said unit transmission period (TT), said transmission disabled period (STb) for 2i−3 times said unit transmission period (TT);
and
said individual remote controllers including means for transmitting signals using channels that are different from one another.

8 more elements

A transmission and reception system with multiple remote controllers comprising:

a plurality of remote controllers for transmitting transmission signals with different transmission periods (ST);
each of said transmission periods (ST) consisting of equal unit transmission periods (TT) for individual channels;
a single receiver for receiving said transmission signals from said individual remote controllers,
said unit transmission period (TT) consists of a data transmission period (DTa) and a data stop period (DTb), said data stop period (DTb) is at least as long as said data transmission period (DTa),
said single transmission period (ST) is twice said unit transmission period (TT);
for a first remote controller, said single transmission period (ST) consists of a transmission enabled period (STa) for said unit transmission period (TT), and a transmission disabled period (STb) for said unit transmission period (TT) in this sequence;
for a second remote controller, said single transmission period (ST) is four times said unit transmission period (TT), and consists of said transmission enabled period (STa) for twice said unit transmission period (TT), and said transmission disabled period (STb) for twice said unit transmission period (TT) in this sequence;
said single transmission period (ST) for said individual remote controllers is 2i times (where “i” is a natural number equal to or more than 3, and a unique number equal to a proper number that is different from one channel to another) said unit transmission period (TT), and consists of said transmission enabled periods (STa) and said transmission disabled periods (STb) in a sequence of said transmission enabled period (STa) for 2i−2 times said unit transmission period (TT), said transmission disabled period (STb) for 2i−3 times said unit transmission period (TT), said transmission enabled period (STa) for 2i−3 times said unit transmission period (TT), said transmission disabled period (STb) for 2i−2 times said unit transmission period (TT), said transmission enabled period (STa) for 2i−3 times said unit transmission period (TT), said transmission disabled period (STb) for 2i−3 times said unit transmission period (TT);
and
said individual remote controllers transmit signals using channels that are different from one another.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/176,286Filed 19 Jun 2002
Priority: JP 2001-37912512 Dec 2001
Published: US 2003/0108111 A112 Jun 2003
Granted: 18 Apr 2006
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

G08C 23/04
Non-electrical signal transmission systems, e.g. optical systems: using light waves, e.g. infrared
G08C 17/02
Arrangements for transmitting signals characterised by the use of a wireless electrical link: using a radio link
G08C 2201/20
Transmission systems of control signals via wireless link: binding and programming of remote control devices
H04W 16/14
Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures: spectrum sharing…