US 12,121,345 B2
Length measuring apparatus, length measuring method, non-transitory computer-readable recording medium, and height scale
Tadaaki Ishige, Tokyo (JP)
Assigned to TANITA CORPORATION, Tokyo (JP)
Appl. No. 17/272,161
Filed by TANITA CORPORATION, Tokyo (JP)
PCT Filed Aug. 26, 2019, PCT No. PCT/JP2019/033367
§ 371(c)(1), (2) Date Feb. 26, 2021,
PCT Pub. No. WO2020/045366, PCT Pub. Date Mar. 5, 2020.
Claims priority of application No. 2018-163520 (JP), filed on Aug. 31, 2018.
Prior Publication US 2021/0212599 A1, Jul. 15, 2021
Int. Cl. A61B 5/107 (2006.01); G01B 11/06 (2006.01)
CPC A61B 5/1072 (2013.01) [A61B 5/1079 (2013.01); G01B 11/0608 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A length measuring apparatus for measuring length of a measuring object, comprising:
a scale part provided to the measuring object, the scale part having two-dimensional codes with different patterns provided alongside at least in a longitudinal direction;
a reading unit configured to read the two-dimensional codes;
an obtaining unit configured to obtain coordinate information based on the two-dimensional code; and
a conversion unit configured to convert the obtained coordinate information to length information based on a previously generated correspondence between the coordinate information and length information of the measuring object, the correspondence being generated by reading at least one two-dimensional code corresponding to a known length.