Abstract: A method for image compression is described. The method compresses computer images for efficient transfer of consecutive compressed images through a network. The method comprises loading two consecutive images, fuzzy comparing the two consecutive images, calculating the total different number between the two consecutive images, and determining an encoding algorithm, such as run-length and delta-modulation (RLEDM) or JPEG, according to the total different number. The fuzzy comparison eliminates deviations caused by capturing errors. The RLEDM encoding algorithm of the invention only deals with image differences between the two consecutive images, including line pattern indexes and line patterns, and depends on a minimum encoding size rule to further determine the encoding algorithm, such as a direct encoding, a run-length encoding or a delta-modulation encoding.

Abstract: A resource sharing apparatus includes an application specific integrated circuit and a central processing unit. The application specific integrated circuit includes a number of hubs, a number of device controllers for stimulating the peripheral apparatus, a bus, a host controller, and a root hub. Each of the hubs and the root hub has a host port and a number of peripheral ports. The host port of each hub is coupled to one personal computer, and the peripheral ports of each hub are coupled to one device controller and the peripheral apparatus. Some peripheral apparatus are coupled to the peripheral ports of the root hub, and the host port of the root hub is coupled to the host controller. The device controllers, the host controller, and the central processing unit, coupled to each other via the bus, control the operation of the resource sharing apparatus.

Abstract: A resource sharing apparatus includes an application specific integrated circuit and a central processing unit. The application specific integrated circuit includes a number of hubs, a number of device controllers for stimulating the peripheral apparatus, a bus, a host controller, and a root hub. Each of the hubs and the root hub has a host port and a number of peripheral ports. The host port of each hub is coupled to one personal computer, and the peripheral ports of each hub are coupled to one device controller and the peripheral apparatus. Some peripheral apparatus are coupled to the peripheral ports of the root hub, and the host port of the root hub is coupled to the host controller. The device controllers, the host controller, and the central processing unit, coupled to each other via the bus, control the operation of the resource sharing apparatus.

Abstract: A method for image compression is described. The method compresses computer images for efficient transfer of consecutive compressed images through a network. The method comprises loading two consecutive images, fuzzy comparing the two consecutive images, calculating the total different number between the two consecutive images, and determining an encoding algorithm, such as run-length and delta-modulation (RLEDM) or JPEG, according to the total different number. The fuzzy comparison eliminates deviations caused by capturing errors. The RLEDM encoding algorithm of the invention only deals with image differences between the two consecutive images, including line pattern indexes and line patterns, and depends on a minimum encoding size rule to further determine the encoding algorithm, such as a direct encoding, a run-length encoding or a delta-modulation encoding.