초록 ▼

A digital data encode system for inserting water mark data into digital data signals having a series of field data by use of a water mark data inserting device, the digital data encode system has a field judging unit dividing the digital data signals by a predetermined reference, a water mark data s

A digital data encode system for inserting water mark data into digital data signals having a series of field data by use of a water mark data inserting device, the digital data encode system has a field judging unit dividing the digital data signals by a predetermined reference, a water mark data selection output unit for selecting proper one of a plurality of different water mark data prepared correspondingly to the division according to the judgment result of the field judging unit, and a water mark data inserting device for inserting the water mark data supplied from the water mark data selection output unit into the digital data signals.

대표청구항 ▼

[ What is claimed is:] [1.] A digital data encode system having a water mark data inserting device for inserting water mark data into digital data signals having a series of field data, comprising:a water mark data inserting control means for controlling inserting of said water mark by said water ma

[ What is claimed is:] [1.] A digital data encode system having a water mark data inserting device for inserting water mark data into digital data signals having a series of field data, comprising:a water mark data inserting control means for controlling inserting of said water mark by said water mark data inserting device,wherein said water mark data inserting control means divides the digital data signals by a predetermined reference and inserts a plurality of different water mark data prepared correspondingly to the division into the respective digital data of the corresponding divisions by use of said water mark data inserting device,said digital data signals are of digital data signal having a series of field data consisting of odd fields and even fields of a series of image frames, andsaid water mark data inserting control means inserts first and second water mark data different from each other and prepared for every odd field and every even field into the respective corresponding fields, by use of said water data inserting device.