Digital time clock for operation in conjunction with...

Horology: time measuring systems or devices – Combined with disparate device

Reexamination Certificate

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Details

C346S080000, C235S377000

Reexamination Certificate

active

07489595

ABSTRACT:
A digital time clock that may be used in conjunction with a mechanical time clock. The digital time clock is placed on or adjacent to an existing mechanical time clock. A radio frequency identification (RFID) tag is associated with each time card that is distributed to employees. As an employee inserts a time card into the mechanical time clock, the digital time clock detects the proximity of the time card and reads the RFID tag. An RFID identifier is stored along with an indication of the time that the identifier was read. The digital time clock may be kept in a low-power standby state until the time card is detected, at which time the digital time clock enters an operational state. The digital time clock may be transported to a location where payroll is to be performed, and data downloaded to a processing device.

REFERENCES:
patent: 4270043 (1981-05-01), Baxter et al.
patent: 4516138 (1985-05-01), Iwasawa et al.
patent: 4538056 (1985-08-01), Young et al.
patent: 4755835 (1988-07-01), Ogihara et al.
patent: 4812627 (1989-03-01), Wexler et al.
patent: 4924451 (1990-05-01), Hsiung
patent: 5717867 (1998-02-01), Wynn et al.

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