Information processing system, information processing method, and non-transitory computer readable medium

An information processing method for an information processing system, comprising:

• a contact parameter detection step of detecting speed and direction of movement of a pen tip of a pen-type input device on an operable surface as contact parameters;
• a feedback level derivation step of acquiring velocity at predetermined time intervals and deriving a feedback level for each predetermined time based on the acquired velocity, wherein, the deriving the feedback level comprises
• calculating the feedback level corresponding to current time based on a predetermined equation using the velocity at the current time in a non-reversed state where the direction is not reversed between a predetermined time previous to the current time and the current time and
• calculating the feedback level based on the predetermined equation into which the velocity at the current time is substituted as zero in a reversed state where the direction is reversed between the predetermined time previous to the current time and the current time;
• and
• a drive control step of driving a haptic reproduction unit in the pen-type input device based on the feedback level calculated by the feedback level derivation unit.

A non-transitory computer readable medium comprising a program, wherein a computer serves as a pen-type input device in an information processing system including:

• an information processing apparatus that detects velocity and direction of movement of a pen tip of a pen-type input device on an operable surface as contact parameters;
• and the pen-type input device that receives the contact parameters, the program causing the computer to process:
• a step of acquiring the velocity at predetermined time intervals and deriving the feedback level for each predetermined time based on the acquired velocity, wherein the deriving the feedback level comprises
• calculating a feedback level corresponding to current time based on a predetermined equation using the velocity at the current time in a non-reversed state where the direction is not reversed between a predetermined time previous to the current time and the current time and
• calculating the feedback level based on the predetermined equation into which the velocity at the current time is substituted as zero in a reversed state where the direction is reversed between the predetermined time previous to the current time and the current time;
• and
• a step of driving a haptic reproduction unit in the pen-type input device based on the feedback level calculated by the feedback level derivation unit.