Digital map display zooming method, digital map display zooming device, and storage medium for storing digital map display zooming program

• Main Authors: NARIOKA, HIROTO, WATANABE, RYUICHI, MINAMI, MASAFUMI
• Format: Patent
• Language: Chinese; English
• Published: 01.12.1999
• Subjects: ADVERTISING; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; CALCULATING; COMPUTING; COUNTING; CRYPTOGRAPHY; DIAGRAMS; DISPLAY; EDUCATION; EDUCATIONAL OR DEMONSTRATION APPLIANCES; ELECTRIC DIGITAL DATA PROCESSING; GLOBES; GYROSCOPIC INSTRUMENTS; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; PLANETARIA; SEALS; SIGNALLING; SURVEYING; TESTING; TRAFFIC CONTROL SYSTEMS

A digital map display zooming method for continuously enlarging and reducing a displayed portion of a digital map as map information in digital form within a display screen is provided which comprises the steps of displaying the displayed portion of the digital map at the display screen, displaying scroll part within the display screen, for shifting the displayed portion, making the scroll part function as a scale setting part for carrying out enlarging and reducing operation of the displayed portion of the digital map with the display screen, and carrying out enlarging and reducing operations of the displayed portion of the digital map within the display screen by shifting a shift operation part of the scale setting part.