Abstract: Clocks of communication terminals can be synchronized using packets over TCP/IP. In one example, an Internet Protocol packet is received at the first terminal from the second terminal, the packet having a time stamp indicating the time at which it was sent from the second terminal. The time is determined at which the packet arrived at the first terminal and compared to the time stamp to determine a minimal feasible bias. The determined minimal feasible bias is compared to a stored bias and the stored bias is set to the determined minimal feasible bias if the stored bias is less than the minimal feasible bias. A clock time difference is then determined at the second terminal using the stored bias.

Abstract: Conferencing between multiple parties can be performed with mesh conferencing. In one example, conference streams are received directly or indirectly from different client nodes at a mesh conferencing node. A priority is assigned to each stream before or after the streams are received. At least one stream is selected based on the assigned priorities to send to another node, such as a client node or a second mesh conferencing. node. Using the priorities, the streams may also be scaled or compressed before being sent to the next node.

Abstract: Conferencing between multiple parties can be performed with mesh conferencing. In one example, conference streams are received directly or indirectly from different client nodes at a mesh conferencing node. A priority is assigned to each stream before or after the streams are received. At least one stream is selected based on the assigned priorities to send to another node, such as a client node or a second mesh conferencing. node. Using the priorities, the streams may also be scaled or compressed before being sent to the next node.

Abstract: Clocks of communication terminals can be synchronized using packets over TCP/IP. In one example, an Internet Protocol packet is received at the first terminal from the second terminal, the packet having a time stamp indicating the time at which it was sent from the second terminal. The time is determined at which the packet arrived at the first terminal and compared to the time stamp to determine a minimal feasible bias. The determined minimal feasible bias is compared to a stored bias and the stored bias is set to the determined minimal feasible bias if the stored bias is less than the minimal feasible bias. A clock time difference is then determined at the second terminal using the stored bias.

Abstract: A system for sending and receiving multimedia transmissions over a network includes two or more clients and a server. Each client is connected to the network and generates and receives audio and video data via the network. The server receives the audio and video data from the clients and sends the audio and video data to the clients. During the transmission of the audio and video data, the client and server dynamically determine the rate at which to transmit the audio and video data.

Abstract: An electronic spreadsheet system of the present invention includes a Formula Composer having a preferred interface and methods for assisting a user with composing spreadsheet formulas. The Composer provides the user with simultaneous formula outline and subexpression (text) views of a given formula. Using the formula outline view, the user may isolate a particular portion (subexpression) of a formula for editing. The Formula Composer also provides a Formula Expert, which is displayed by the system upon the user selecting a spreadsheet function in a formula being edited. In addition to providing specific information about the selected spreadsheet function, the Formula Expert provides input fields which are specific for the arguments of the selected function. Moreover, the Formula Expert includes mode expressions or "templates" for assisting users in inputting correct argument information. Using pattern matching technique, the system may employ the templates for eliminating common user input mistakes.

Abstract: An electronic spreadsheet system of the present invention includes a notebook interface having a plurality of notebook pages, each of which may contain a spread of information cells, or other desired page type (e.g., Graphs page). Methods are provided for rapidly accessing and processing information on the different pages, including displaying a plurality of page identifiers for selecting individual pages, and further including a preferred syntax for referencing information. Additional methods are described for in-memory management and persistent storage of notebooks and their pages.