Claims [Claim 1] A data determination apparatus comprising:
a state transition model storage unit to store a state transition model representing a state transition between respective operating states of a plurality of operating states;
a state management unit to hold an operating state of the data determination apparatus based on the state transition model;
a communication permission list storage unit to store, as a communication permission list, communication permitted data whose communications are permitted in the respective operating states of the plurality of operating states;
a communication unit to obtain communication data as communication determination data; and
a determination unit to obtain the communication determination data obtained by the communication unit, obtain the operating state of the data determination apparatus held by the state management unit as a current operating state, and determine whether or not the communication determination data is communication permitted data whose communication has been permitted in the current operating state, using the current operating state and the communication permission list. [Claim 2] The data determination apparatus according to claim 1, comprising:
an alarm unit to output an alarm indicating detection of abnormality when the communication determination data is determined not to be the communication permitted data by the determination unit. [Claim 3] The data determination apparatus according to claim 1 or 2,
wherein the determination unit blocks the communication when the determination unit determines that the communication determination data is not the

communication permitted data.
[Claim 4] The data determination apparatus according to any one of claims 1 to 3,
wherein the state management unit transitions the operating state of the data determination apparatus based on the state transition model when the communication determination data is determined to be the communication permitted data by the determination unit. [Claim 5] The data determination apparatus according to any one of claims 1 to 4,
wherein the state management unit transitions the operating state of the data determination apparatus to an abnormal state when the communication determination data is determined not to be the communication permitted data by the determination unit.
[Claim 6] The data determination apparatus according to any one of claims 1 to 5, comprising:
a timer to measure a period of time during which the operating state of the data determination apparatus continues;
wherein the state transition model storage unit stores the state transition model to transition between the respective operating states of the plurality of operating states according to obtained information obtained by the data determination apparatus; and
wherein the obtained information includes the communication data obtained by the communication, an operation signal indicating receipt of an operation on the data determination apparatus, and a timer signal output from the timer. [Claim 7] The data determination apparatus according to claim 6, comprising:
a history storage unit to store a history of the obtained information as an obtained information history; and
a list generation unit to generate the state transition model and the

communication permission list, based on the obtained information history. [Claim 8] The data determination apparatus according to claim 7,
wherein the list generation unit generates the state transition model by setting a wait state when a period of time elapsed between successive communication data included in the obtained information history is a first period or more, setting, as a first change point, a point of time of having obtained information other than the communication data and setting each of states before and after the first change point as a first operating state, and setting, as a second change point, a point of time of having obtained transition communication data whereby an operating state transition has been determined to be made in each first operating state and setting each of states before and after the second change point as a second operating state. [Claim 9] The data determination apparatus according to claim 8,
wherein the list generation unit sets, in the communication permission list, the communication data communicated in each operating state included in the state transition model, as the communication permitted data. [Claim 10] The data determination apparatus according to claim 8 or 9,
wherein the list generation unit extracts the transition communication data, using a clustering method.
[Claim 11] A data determination method of a data determination apparatus comprising a state transition model storage unit to store a state transition model representing a state transition between respective operating states of a plurality of operating states, and a communication permission list storage unit to store, as a communication permission list, communication permitted data whose communications are permitted in the respective operating states of the plurality of operating states, the method comprising:
by a state management unit, holding an operating state of the data

determination apparatus based on the state transition model;
by a communication unit, obtaining communication data as communication determination data; and
by a determination unit, obtaining the communication determination data obtained by the communication unit, obtaining the operating state of the data determination apparatus held by the state management unit as a current operating state, and determining whether or not the communication determination data is communication permitted data whose communication has been permitted in the current operating state, using the current operating state and the communication permission list. [Claim 12] A program of a data determination apparatus comprising a state transition model storage unit to store a state transition model representing a state transition between respective operating states of a plurality of operating states, and a communication permission list storage unit to store, as a communication permission list, communication permitted data whose communications are permitted in the respective operating states of the plurality of operating states, the program comprising:
a state management process of holding an operating state of the data determination apparatus based on the state transition model;
a communication process of obtaining communication data as communication determination data; and
a determination process of obtaining the communication determination data obtained in the communication process, obtaining the operating state of the data determination apparatus held in the state management process as a current operating state, and determining whether or not the communication determination data is communication permitted data whose communication has been permitted in the current operating state, using the current operating state and the communication permission list.

[Claim 13] A data determination apparatus comprising:
a state transition model storage unit to store a state transition model representing a state transition between respective operating states of a plurality of operating states;
a state management unit to hold an operating state of the data determination apparatus based on the state transition model;
a communication permission list storage unit to store, as a communication permission list, communication permission rules including communication permitted data whose communications are permitted in the respective operating states of the plurality of operating states, a permission condition under which communication of each communication permitted data is permitted, and a permission process when the communication of the communication permitted data is permitted;
a timer unit to measure a period of time;
a communication unit to obtain communication data as communication determination data; and
a determination unit to obtain the communication determination data obtained by the communication unit, a current operating state being the operating state of the data determination apparatus held by the state management unit, and a timer value being a current value of the timer unit, and determine whether or not the communication determination data satisfies a communication permission rule that permits the communication in the current operating state, using the current operating state, the communication permission list, and the timer value. [Claim 14] The data determination apparatus according to claim 13,
wherein the communication permission list storage unit stores, as the permission condition, a timer permitted value indicating a value range of the timer unit

to permit the communication of the communication permitted data, and stores, as the permission process, a timer set value to be set in the timer unit when the communication of the communication permitted data is permitted; and
wherein the determination unit determines whether or not the communication determination data satisfies the communication permission rule, using a determination result indicating whether or not the timer value is within the range of the timer permitted value.
[Claim 15] The data determination apparatus according to claim 13 or 14, further comprising:
a flag management unit to manage each flag;
wherein the determination unit obtains the current operating state, the communication permission list, the timer value, and a flag value being a current value of the flag, and determines whether or not the communication determination data satisfies the communication permission rule that permits the communication in the current operating state, using the current operating state, the communication permission list, the timer value, and the flag value. [Claim 16] The data determination apparatus according to claim 15,
wherein the communication permission list storage unit further stores, as the permission condition, a flag permitted value being a value of the flag to permit the communication of the communication permitted data, and further stores, as the permission process, a flag set value to be set in the flag when the communication of the communication permitted data is permitted; and
wherein the determination unit determines whether or not the communication determination data satisfies the communication permission rule, using a determination result indicating whether or not the flag value is the flag permitted value.

[Claim 17] The data determination apparatus according to any one of claims 13 to 16, further comprising:
an alarm unit to output an alarm indicating detection of abnormality when the communication determination data is determined not to satisfy the communication permission rule by the determination unit. [Claim 18] The data determination apparatus according to any one of claims 13 to 17,
wherein the determination unit blocks the communication when the determination unit determines that the communication determination data does not satisfy the communication permission rule. [Claim 19] The data determination apparatus according to any one of claims 13 to 18,
wherein the state management unit transitions the operating state of the data determination apparatus based on the state transition model when the communication determination data is determined to satisfy the communication permission rule by the determination unit.
[Claim 20] A data determination method of a data determination apparatus comprising a state transition model storage unit to store a state transition model representing a state transition between respective operating states of a plurality of operating states and a communication permission list storage unit to store, as a communication permission list, communication permission rules including communication permitted data whose communications are permitted in the respective operating states of the plurality of operating states, a permission condition under which communication of each communication permitted data is permitted, and a permission process when the communication of the communication permitted data is permitted, the data determination method comprising:
by a state management unit, holding an operating state of the data

determination apparatus based on the state transition model;
by a communication unit, obtaining communication data as communication determination data; and
by a determination unit, obtaining the communication determination data obtained by the communication unit, a current operating state being the operating state of the data determination apparatus held by the state management unit, and a timer value being a current value of a timer unit to measure a period of time, and determining whether or not the communication determination data satisfies a communication permission rule that permits the communication in the current operating state, using the current operating state, the communication permission list, and the timer value. [Claim 21] A program of a data determination apparatus comprising a state transition model storage unit to store a state transition model representing a state transition between respective operating states of a plurality of operating states and a communication permission list storage unit to store, as a communication permission list, communication permission rules including communication permitted data whose communications are permitted in the respective operating states of the plurality of operating states, a permission condition under which communication of each communication permitted data is permitted, and a permission process when the communication of the communication permitted data is permitted, the program comprising:
a state management process of holding an operating state of the data determination apparatus based on the state transition model;
a communication process of obtaining communication data as communication determination data; and
a determination process of obtaining the communication determination data

obtained in the communication process, a current operating state being the operating state of the data determination apparatus held in the state management process, and a timer value being a current value of a timer unit to measure a period of time, and determining whether or not the communication determination data satisfies a communication permission rule that permits the communication in the current operating state, using the current operating state, the communication permission list, and the timer value.