ELECTRONIC SHELF LABEL SYSTEM, PROCESSING METHOD, ELECTRONIC SHELF LABEL, AND PROGRAM

Title:

ELECTRONIC SHELF LABEL SYSTEM, PROCESSING METHOD, ELECTRONIC SHELF LABEL, AND PROGRAM

Document Type and Number:

WIPO Patent Application WO/2010/052996

Kind Code:

A1

Abstract:

When no commodity information can be received from a server device, the power consumption is suppressed. An electronic shelf label (300-1) has a transmission unit (302) which transmits a registration request signal to the server device. A transmission interval specification unit (308) stepwise increases the transmission interval of the registration request signal in accordance with the time length of a non-synchronous state during which no response signal is received in response to the registration request signal transmitted to the server device. A terminal state request signal generation unit (305) generates a terminal state request signal to transmit terminal state information to other electronic shelf label. A transmission unit (302) transmits the generated terminal state request signal. Upon reception of the terminal state request signal, the other electronic shelf label transmits terminal state information. Upon reception of the terminal state information, the electronic shelf label (300-1) updates the time length of the non-synchronous state during which no response signal is received, in accordance with the received terminal state information.

Inventors:

KONO SHIGERU (JP)
OKINA SHIGETAKA (JP)
IZAKI SHOZO (JP)

Application Number:

PCT/JP2009/067678

Publication Date:

May 14, 2010

Filing Date:

October 09, 2009

Export Citation:

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Assignee:

SEIKO INSTR INC (JP)
KONO SHIGERU (JP)
OKINA SHIGETAKA (JP)
IZAKI SHOZO (JP)

International Classes:

A47F5/00; G06F1/32; G07G1/12; G09G5/00

Domestic Patent References:

WO2008087889A1

2008-07-24

Foreign References:

JP2008212446A	2008-09-18
JP3600237B2	2004-12-15
JP2008168057A	2008-07-24

Other References: