Abstract: A method and apparatus for realizing videophone are provided in the present invention. The method includes setting different videophone modes; and selecting the videophone mode for a user to perform a video conversation by using the selected videophone mode. The apparatus includes a setting module and a control module which is connected with the setting module. With the method and apparatus for realizing videophone according to the present invention, the user can select a normal conversation or a preset audio/video mode according to requirements in the process of the videophone conversation so as to achieve different video effects.

Abstract: 3,5-Dihydroxypentanoic acid derivatives are provided which are 6-hydroxy-8-(2,2-dimethyl-1-oxybutoxy-2-methyl)-substituted-thiazolidine derivatives and have the structure ##STR1## wherein Z is ##STR2## R.sup.6 is an alkali metal, lower alkyl or H; R.sup.1 and R.sup.2 are the same or different and are H, lower alkyl or aryl;X is S, O, ##STR3## or a single bond; R.sup.7 is lower alkyl; R.sup.3 is lower alkyl or aryl; R.sup.4 and R.sup.5 are the same or different and are H or lower alkyl; and represents a single bond or a double bond, and are HMG CoA reductase inhibitors and thus are useful as antihypercholesterolemic agents and in treating atherosclerosis, and also as antifungal agents.In addition, novel intermediates for use in preparing the above mevinic acid derivatives are also provided.