Method, system and computer readable medium for coin discrimination

A coin discrimination system for setting a piece of new discrimination criterion information for a predetermined target denomination while conducting authenticity discrimination and denomination discrimination of coins using pieces of sensor information outputted from coin sensors, comprising:

• a coin discrimination apparatus having a memory, wherein the coin discrimination apparatus includes a state determination section and an operation mode controller;
• an authenticity and denomination discrimination controller that conducts authenticity discrimination and denomination discrimination of the coins in a normal mode by respectively comparing pieces of specific information obtained from the pieces of sensor information from the coin sensors that detect coins with corresponding pieces of current discrimination criterion information;
• setting the predetermined target denomination so as not to include at least one other denomination of the coins that is subjected to authenticity discrimination and denomination discrimination by designating a coin as the predetermined target denomination in the memory in advance of conducting authenticity discrimination and denomination discrimination of the coins,
• wherein only a detection of a presence of the predetermined target denomination initiates a nonstandard mode for determining whether the setting of the piece of new discrimination criterion information is required,
• wherein in response to content of a determination result signal outputted from the state determination section to the operation mode controller based upon the denomination encountered, the operation mode controller outputs a mode selection signal that automatically switches between the normal mode and the nonstandard mode,
• wherein,
• after performing authenticity discrimination and denomination discrimination on the predetermined target denomination that requires setting of a piece of new discrimination criterion information, a coin selection controller selects new discrimination criterion setting coins from the coins through a first judgement on whether a denomination of each of the coins is consistent with the predetermined target denomination and a second judgement on whether each of the coins is suitable for generation of the piece of new discrimination criterion information in order to select the coins each having a size and a physical property that is within a permitted range of those at a time of production, the second judgement being conducted by determining whether each of the pieces of specific information is included in a permissible range of a corresponding one of pieces of suitability criterion information;
• a new specific information extraction controller that extracts a piece of new specific information from at least one of the pieces of the sensor information about the new discrimination criterion information setting coins;
• and
• a new discrimination criterion information setting controller that sets the piece of new discrimination criterion information for the predetermined target denomination using the piece of new specific information after a predetermined plural number of the new discrimination criterion information setting coins have been judged in the first judgment to be consistent with the predetermined target denomination and in the second judgment to be in the permissible range of the corresponding one of pieces of suitability criterion information.

A non-transitory computer readable medium storing a coin discrimination program for setting a piece of new discrimination criterion information for a predetermined target denomination while conducting authenticity discrimination and denomination discrimination of coins using pieces of sensor information outputted from coin sensors, which comprises processes to be executed by a computer, the processes comprises:

• accessing a memory;
• comparing respectively pieces of specific information obtained from the pieces of sensor information from the coin sensors that detect coins with corresponding pieces of current discrimination criterion information, thereby conducting authenticity discrimination and denomination discrimination of the coins in a normal mode;
• setting the predetermined target denomination so as not to include at least one other denomination of the coins that is subjected to authenticity discrimination and denomination discrimination by designating a coin as the predetermined target denomination in the memory in advance of conducting authenticity discrimination and denomination discrimination of the coins,
• wherein only a detection of a presence of the predetermined target denomination initiates a nonstandard mode for determining whether the setting of the piece of new discrimination criterion information is required,
• causing an operation mode controller to output a mode selection signal that automatically switches between the normal mode and the nonstandard mode in response to content of a determination result signal outputted from the state determination section to the operation mode controller based upon the denomination encountered,
• wherein,
• after performing authenticity discrimination and denomination discrimination on the predetermined target denomination that requires setting of a piece of new discrimination criterion information, selecting new discrimination criterion information setting coins from the coins through a first judgement on whether a denomination of each of the coins is consistent with the predetermined target denomination and a second judgement on whether each of the coins is suitable for generation of the piece of new discrimination criterion information in order to select the coins each having a size and a physical property that is within a permitted range of those at a time of production, the second judgement being conducted by determining whether each of the pieces of specific information is included in a permissible range of a corresponding one of pieces of suitability criterion information;
• extracting a piece of new specific information from at least one of the pieces of the sensor information about the new discrimination criterion information setting coins;
• and
• setting the piece of new discrimination criterion information for the predetermined target denomination using the piece of new specific information after a predetermined plural number of the new discrimination criterion information setting coins have been judged in the first judgment to be consistent with the predetermined target denomination and in the second judgment to be in the permissible range of the corresponding one of pieces of suitability criterion information.