A technique for identifying the encoding law utilized by a central office codec may be implemented in a receive modem. The optional filter is configured to pass a selected band of channels. Responsive to digital content being presented on a client computing platform, information related to browsing activity on the client computing platform is gathered. The structure is particularly beneficial for MRAM devices. The light guiding section receives incidence of the light emitted from the second semiconductor light emitting element and emits the light to the original document from a position where a normal of the document glass is present between the light guide section and the first semiconductor light emitting element. The screen may include base portion and side wall portion, the side wall portion extending up to a level approximately level with the disc members.