Device for the digital transmission and display of graphics and/or of characters on a screen
Method and apparatus for digital serial scanning with hierarchical and relational access
Freeze-picture transmission apparatus
Electronic document information filing system
Image storage and retrieval
Still picture transmission apparatus
Block mode digital signal conditioning method and apparatus
Management communication terminal system
B-tree structured data base using sparse array bit maps to store inverted lists
ApplicationNo. 759959 filed on 09/17/1991
US Classes:707/10, Distributed or remote access379/93.25, Having remote database (e.g., videotex system)709/219, Accessing a remote server709/247, Compressing/decompressing715/500.1, Synchronization of diverse media715/751, Computer supported collaborative work between plural users725/86USER-REQUESTED VIDEO PROGRAM SYSTEM
ExaminersPrimary: Shaw, Dale M.
Assistant: Tung, Kee M.
Attorney, Agent or Firm
International ClassesG06F 015/00
AbstractA system and method for storing, retrieving displaying, printing and otherwise manipulating color images stored in a central "host" computer from a realtor's remote data terminal includes a host computer which stores and maintains a database containing listings of real estate properties on the market. The host computer also optionally can store image information relating to specific properties. Images can be loaded from remote terminals over telephone lines to the host system on an interactive basis. Images can then be retrieved from the host system, also on an interactive basis, for display, printing, or storage on a storage medium associated with the remote display terminals. Images may also be deleted on an interactive basis from a remote terminal. A specific communications protocol conveys image data between the host computer and remote data terminals. This protocol includes specific "time-out" limitations, CRC error checking schemes, and a specific "handshaking" signalling sequence that must be observed before the host system will permit manipulation of image files.