Abstract: This patent describes a system where we can share some information such as photos, images, electrical documents, and web screen through the TCP/IP or Peer-to-Peer protocol network. From this system, one user can activate a drawing board application and connect his/her computer with the other users through the friend list. One client's application can activate another's application in remote devices by using the session initial protocol (SIP) or short message peer to peer protocol (SMPP). By using SMPP or SIP, one user can trigger the application of another user in a remote device to set up an interactive collaboration. After the connection has been set up, the user can draw and share drawing results with other connected computers. One client can also open a browser inside the working pad and input URL to browse the web's contents. At the same time, the web browser of other connected client's devices will be automatically opened and synchronized the web's content.

Abstract: A method for extracting peak information from an amplitude varying sinusoidal waveform output from a sensor is provided. The method includes gating a counter with a keying signal having a keying-signal period generated by a sinusoidal waveform associated with the amplitude varying sinusoidal waveform, receiving high frequency clock signals at the gated counter during keying-signal periods, wherein a clock-signal period is much less than the keying-signal periods, disabling the counter at the end of each keying-signal period, generating a quarter-count value based on the disabling, and outputting a sample pulse associated with each keying-signal period. If a current-keying-signal period is the same as a last-keying-signal period, the sample pulse is generated at a quarter-wave of the sinusoidal waveform. If the current-keying-signal period differs from the last-keying-signal period, the associated output sample pulses are adjusted to the quarter-wave of the sinusoidal waveform in the next-keying-signal period.

Abstract: A method for extracting peak information from an amplitude varying sinusoidal waveform output from a sensor is provided. The method includes gating a counter with a keying signal having a keying-signal period generated by a sinusoidal waveform associated with the amplitude varying sinusoidal waveform, receiving high frequency clock signals at the gated counter during keying-signal periods, wherein a clock-signal period is much less than the keying-signal periods, disabling the counter at the end of each keying-signal period, generating a quarter-count value based on the disabling, and outputting a sample pulse associated with each keying-signal period. If a current-keying-signal period is the same as a last-keying-signal period, the sample pulse is generated at a quarter-wave of the sinusoidal waveform. If the current-keying-signal period differs from the last-keying-signal period, the associated output sample pulses are adjusted to the quarter-wave of the sinusoidal waveform in the next-keying-signal period.

Abstract: A system and a call forwarding manager device for providing Internet telephony to a subscriber's premises via the subscriber's Internet connection, facilitated by the subscriber's analog telephone connection. Incoming analog telephone calls are received by the call forwarding manager connected to the subscriber's analog telephone line, which responds by generating a request for service from a voice gateway, which may be remotely located. The voice gateway then generates an Internet telephone connection from the voice gateway to an Internet protocol telephone owned by the subscriber, and then connects the analog telephone call via the voice gateway to the Internet protocol telephone via the subscriber's Internet connection.