Encoder, decoder, data processing apparatus, network system, data processing method, recording medium, and program

A decoder for decoding encode data d2 of object data d0 which is encoded using first data d1 having a definite rule and predetermined second data α, comprising:

• obtaining means for obtaining said first data d1 from said encode data d2 using said second data α;
• and
• detecting means for detecting said definite rule by analyzing said first data d1 which is obtained by said obtaining means.

A data processing apparatus for monitoring data output from storing means which stores at least encode data d2 of object data d0 which is encoded using first data d1 having a definite rule and predetermined second data α, comprising:

• detecting means for detecting said definite rule from data sent out from said storing means by obtaining said first data d1 from said encode data d2 by using said second data α to analyze said first data d1;
• and
• processing means for performing a predetermined process for outputting of said encode data d2 based on a result of the detection by said detecting means.

A recording medium recording thereon an encoded result of data d0, which has been encoded by an encoding function, so that said result can be sent out to a communication line, said function being for encoding optional data d0 using first data d1 having a definite rule and predetermined second data α, and being capable of detecting said definite rule on the basis of a result of an analysis of said first data d1 obtained from encode data d2 using said second data α, when said encode data d2 of said data d0, which is obtained by encoding, is decoded.

A network system comprising a plurality of devices which are connected to communicate with each other via a network,

• wherein at least one of said devices is a device for performing encoding object data d0 using first data d1 having a definite rule and predetermined second data α, said device comprising means for performing encoding so that said definite rule is detectable, when encode data d2 of said object data d0, which is obtained by encoding, is decoded, based on a result of analyzing said first data d1 obtained from said encode data d2 using said second data α.

A network system comprising a plurality of devices which are connected to communicate with each other via a network,

• wherein at least one of said devices is a device for decoding encode data d2 of object data d0 which is encoded using first data d1 having a definite rule and predetermined second data α, said device comprising obtaining means for obtaining said first data d1 from said encode data d2 using said second data α and detecting means for detecting said definite rule by analyzing said first data d1 which is obtained by said obtaining means.

A network system comprising a plurality of devices which are connected to communicate with each other via a network,

• wherein at least one of said devices is a device comprising a recording medium recording thereon an encoded result of data d0, which has been encoded by an encoding function, so that said result can be sent out to a communication line, said function being for encoding optional data d0 using first data d1 having a definite rule and predetermined second data α, and being capable of detecting said definite rule on the basis of a result of an analysis of said first data d1 obtained from encode data d2 using said second data α, when said encode data d2 of said data d0, which is obtained by encoding, is decoded.

A computer-readable recording medium recording thereon a program for causing a computer to realize a function of monitoring data on a communication line to which at least storing means for storing optional data is connected,

• wherein said program includes a program for causing said computer to execute the step of processing which includes the steps of encoding predetermined object data d0 using first data d1 having a definite rule and predetermined second data α and storing in said storing means encode data d2 of said object data d0, which is obtained in the step of encoding, and
• said step of encoding includes the step of performing encoding so that said definite rule is detectable, when said encode data d2 is decoded, based on a result of analyzing said first data d1 obtained from said encode data d2 using said second data α.

A computer-readable recording medium recording thereon a program for causing a computer to realize a function of encoding object data d0 using first data d1 having a definite rule and predetermined second data α,

• wherein said program includes a program for causing said computer to realize a function of performing encoding so that said definite rule is detectable, when encode data d2 of said object data d0, which is obtained by encoding, is decoded, based on a result of analyzing said first data d1 obtained from said encode data d2 using said second data α.

A computer-readable recording medium recording thereon a program for causing a computer to realize a function of decoding encode data d2 of object data d0 which is encoded using first data d1 having a definite rule and predetermined second data α,

• wherein said program includes a program for causing said computer to realize a function of detecting said definite rule by obtaining said first data d1 from said encode data d2 by using said second data α to analyze said first data d1.

A program product for causing a computer to realize a function of monitoring data on a communication line to which at least storing means for storing optional data is connected, said program comprising:

• a program for causing said computer to realize the step of processing which includes the steps of encoding predetermined object data d0 using first data d1 having a definite rule and predetermined second data α and storing in said storing means encode data d2 of said object data d0, which is obtained in the step of encoding,
• wherein said step of encoding includes the step of performing encoding so that said definite rule is detectable, when said encode data d2 is decoded, based on a result of analyzing said first data d1 which is obtained from said encode data d2 using said second data α.

A program product for causing a computer to realize a function of encoding object data d0 using first data d1 having a definite rule and predetermined second data α,

• wherein said program causes said computer to realize a function of performing encoding so that said definite rule is detectable, when encode data d2 of said object data d0, which is obtained by encoding, is decoded, based a result of analyzing said first data d1 obtained from said encode data d2 using said second data α.

A program product for causing a computer to realize a function of decoding encode data d2 of object data d0 which is encoded using first data d1 having a definite rule and predetermined second data α,

• wherein said program causes said computer to realize a function of detecting said definite rule by obtaining said first data d1 from said encode data d2 by using said second data α to analyze said first data d1.