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However , without support in copyright law for fair use in this area , copyright clearance and then digitisation activities ( especially when OCR is used to convert to text , because of the proof-reading overhead ) introduced such delays into a time-critical process , that the system is unlikely to work for institutions acting alone . Therefore , preservation assessment and any treatment of original materials are undertaken prior to digitisation whenever possible . Digitised versions have also been made of backruns of a selection of older out-of-print journals , and plans are being laid for the establishment of a library-based on-demand digitisation service , to meet the growing need for digital copies and for remote desk-top delivery of requested materials . In specific developmental terms , the e-strategy will involve the following components , many of which are already in place , underway , or planned : the continuous upgrade , and eventual replacement , of the library service 's principal automated system ; the completion and upgrade of the on-line union catalogue of printed holdings and its further development in web-compliance ; the expansion of access to electronic datasets and journals ; the pervasive use of technology for access to manuscript and archival holdings information ; the growth of the Oxford Digital Library ( comprising locally-created digital content ) ; the introduction of an on-demand digitisation service ; the development of an electronic document delivery service ; the routinisation of digital archiving facilities ; and the building of a standards-based hybrid library user interface , capable of enabling easy search-and-retrieval access to all the electronic information and materials available within the library system and beyond . British Library has been involved in numerous scanning and digitisation activities for the British Library , most notably imaging of the Beowulf manuscripts and digitisation of microfilm . The Library ’ s digitisation activities are promoted to ensure that the greatest possible range of users is aware of the collections . Expertise to support digitisation activities is drawn from a range of areas across the Library as required . The third project offers a digitisation service to clients in both the academic and commercial communities where it must in the longer term compete with commercial digitisation companies . The goal is to keep users up to date with the latest developments , to locate other institutions within the country that are involved in digitisation activities , and to share expertise and experience in this field . Jan Fullerton ( Director-General , National Library ) commented that while digitisation greatly increases access and enhances preservation , it is expensive , and the demand for modern electronic retrieval outpaces the Library ’ s ability to change the form of the resource from paper-based to electronic . To support the activities of the Oxford Digital Library at the University of Oxford by supplying a responsive , high quality digitisation service for the conversion of University assets to electronic form . Once copyright permission has been obtained for material , HERON offers a digitisation service and supplies digitised files to institutions . The module explores digitisation formats , compression and encoding algorithms , media types and formats for text , images , video , audio and animation .