Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
223 words
A portable electronic device having data memory means and control means for reading data from the data memory means to an external device, and writing data into the data memory means from the external device, said portable electronic device comprising: PIN memory means for storing a plurality of personal identification numbers (PINs); comparing means for comparing a PIN input via the external device with each of the PINs stored in said PIN memory means; comparison result memory means for storing, in one-to-one correspondence with the stored PINs, each of the comparison results between the externally supplied PIN and the PINs stored in said PIN memory means; control data memory means for storing control data which correspond to instruction data input via the external device, and which indicate which instruction data require examination of the comparison between said PIN input and said stored PINs performed by said comparing means; determining means for determining the necessity for a PIN comparison by reading the control data to the input instruction; and means for commanding said control means to execute the input instruction if the comparison result stored in said comparison result memory means, indicating a coincidence between the input PIN and one of the stored PINs, corresponds to information in the control data which indicates user input PINs for which the input instruction can be executed.
Claim 2
Dependent Claim
223 words
A portable electronic device having data memory means and control means for reading data from the data memory means to an external device, and writing data into the data memory means from the external device, said portable electronic device comprising: PIN memory means for storing a plurality of personal identification numbers (PINs); comparing means for comparing a PIN input via the external device with each of the PINs stored in said PIN memory means; comparison result memory means for storing, in one-to-one correspondence with the stored PINs, each of the comparison results between the externally supplied PIN and the PINs stored in said PIN memory means; control data memory means for storing control data which correspond to instruction data input via the external device, and which indicate which instruction data require examination of the comparison between said PIN input and said stored PINs performed by said comparing means; determining means for determining the necessity for a PIN comparison by reading the control data to the input instruction; and means for commanding said control means to execute the input instruction if the comparison result stored in said comparison result memory means, indicating a coincidence between the input PIN and one of the stored PINs, corresponds to information in the control data which indicates user input PINs for which the input instruction can be executed.
Claim 3
Dependent Claim
72 words
The portable electronic device according to claim 1, wherein said judging means further determines whether or not an instruction data item input via the external device is a usable one, and when it determines that the instruction data item is unusable, causes said control means not to process the instruction data item and then outputs response data to the external device, said response data indicating that the instruction data item is unusable.
Claim 4
Dependent Claim
58 words
The portable electronic device according to claim 1, wherein said judging means causes said control means not to process the instruction data item when it determines that said control means is unable to process the instruction data item, and then outputs response data to the external device, said response data indicating that the instruction data item is unusable.