Patent ID: 9734483
Date: 2017-08-15
CPC Classifications: G06K,G06Q

Claim:
1. A product management device which manages products which are carried to the product management device in a predetermined order using a video recording device which records images captured by a camera, the product management device comprising: a reader that reads a plurality of product identification information, each product identification information being attached to a surface of a product; and a controller that executes instructions, the instructions, when executed by the controller, causing the controller to perform operations including: acquiring a stock list including a plurality of stock identification information; acquiring a reading list including the read plurality of product identification information, in which each product identification information of the read plurality of product identification information is associated with a reading time of the product identification information; acquiring target identification information from the plurality of the stock identification information in the stock list; and searching the reading list to determine whether or not the target identification information is present in the reading list, wherein, when the target identification information is not present in the reading list, the controller further performs operations including: identifying the target identification information, which is not present in the reading list, as a missing identification information; acquiring a preceding stock identification information from the stock list, the preceding stock identification information appearing before the missing identification information in the stock list, and being present in the reading list; acquiring a following stock identification information from the stock list, the following stock identification information appearing after the missing identification information in the stock list, and being present in the reading list; and estimating a reading time of the missing identification information based on a preceding reading time and a following reading time, the previous reading time being associated with the preceding stock identification information in the reading list, the following reading time being associated with the following stock identification information in the reading list.