Method and device for organizing user provided information with meta-information

A method, comprising:

• obtaining user provided information in consequence to any user operation on a mobile terminal device, wherein said user provided information includes user provided audio information;
• obtaining context information associated with said user provided information, wherein said context information is related to at least one current condition of the mobile terminal device at the time of said any user operation;
• providing code basis representing a plurality of coding symbols, said code basis comprising a pre-defined number of pre-defined frequencies, wherein a plurality of coding symbols represents a character and symbol code table employable for coding said meta-information, wherein said code basis is defined within a first frequency range, which is one frequency range of a plurality of frequency ranges forming a total frequency range being applicable to said user provided audio information;
• repeating said code basis within at least one further frequency range out of said plurality of frequency ranges;
• coding said meta-information in accordance with said code basis defined within said first frequency range and repeated within said at least one further frequency range to obtain redundancy;
• combining said user provided audio information and said coded meta-information by embedding said coded meta-information into said user provided audio information;
• and
• directing storage of said user provided information with said coded meta-information in a history storage in order to establish an information history functionality;
• wherein said meta-information is employable for retrieval of said user provided information by matching request information of a retrieval request with said meta-information for selecting a user provided information assigned to said meta-information matched to said request information.

An apparatus comprising at least one processor and at least one memory storing computer program code, wherein the at least one memory and stored computer program code are configured to, with the at least one processor, cause the apparatus to at least:

• obtain user provided information and context information associated with said user provided information, in consequence to any user operation against said apparatus, wherein said context information is related to at least one current condition of the apparatus at the time of said any user operation and includes calendar information from an electronic calendar implemented at said apparatus;
• obtain a first time information in accordance with said user provided information;
• obtain one or more calendar entries included in said calendar information, wherein each calendar entry comprises a second time information with a start time and an end time;
• compare said first time information with each of said second time information to identify matching calendar entries by assigning a membership function to each of said second time information and deriving a membership grade value from said membership function in accordance with said first time information, wherein each membership function comprises a function in time, which rises from zero value at a predetermined moment in time before said start time of a respective calendar entry and becomes zero value at a predefined moment in time after said end time of said respective calendar entry;
• obtain meta-information from each matching calendar entry of said one or more obtained calendar entries;
• assign meta-information obtained from said context information and said membership grade value to said user provided information, said membership grade value defining a measure which allows estimation of a reliability of a timely relatedness for retrieval;
• and
• direct storage of said user provided information and said meta-information in a history storage in order to establish an information history functionality;
• wherein said meta-information is employable for retrieval of said user provided information by matching request information of a retrieval request with said meta-information for selecting a user provided information being assigned to said meta-information matched to said request information.

An apparatus comprising at least one processor and at least one memory storing computer program code, wherein the at least one memory and stored computer program code are configured to, with the at least one processor, cause the apparatus to at least:

• obtain user provided information and context information associated with said user provided information, in consequence to any user operation against said apparatus, wherein said context information is related to at least one current condition of the apparatus at the time of said any user operation, wherein said user provided information includes user provided audio information;
• access a code basis representing a plurality of coding symbols, said code basis comprising a pre-defined number of pre-defined frequencies, wherein said plurality of coding symbols represents a character and a symbol code table employable for coding said meta-information wherein said code basis is defined within a first frequency range, wherein said first frequency range is one frequency range of a plurality of frequency ranges forming a total frequency range within the frequency range of said user provided audio information, wherein said code basis is repeated within at least one further frequency range out of said plurality of frequency ranges;
• code said meta-information in accordance with said code basis defined within said first frequency range and repeated within said at least one further frequency range to obtain redundancy;
• combine user provided audio information and said coded meta-information by embedding said coded meta-information into said user provided audio information;
• and
• direct storage of said user provided information having embedded said embedded meta-information in a history storage in order to establish an information history functionality;
• wherein said meta-information is employable for retrieval of said user provided information by matching request information of a retrieval request with said meta-information for selecting a user provided information being assigned to said meta-information matched to said request information.