System and method for on-demand battery backup for cable telephony device
OwnerSimon Lavaud, Blaine Edward Rameyinventors
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Abstract
A system and method for providing on-demand battery backup to cable telephony devices comprising converting AC main power to DC power 102, charging a battery 104, providing regulated power to the cable modem device 106, detecting the presence of AC main power 108, providing a signal to the cable modem device to indicate that AC main power is not present 110, detecting said signal by said cable modem device 112, entering sleep mode and disabling said telephony interface 114, exiting sleep mode and enabling a telephony interface by said cable modem device upon activation of said cable telephony device 116, and signaling telephony service availability by said cable modem device 118.
Claims20
A system for providing on-demand battery backup for cable telephony devices comprising:
- an on-demand battery backup device (204) having a AC main power detector (210) for determining when AC main power is unavailable including a signal provider (210) for emitting a power loss signal (214) when AC main power is unavailable;
- a cable modem device (216) coupled to said on-demand battery backup device (204) having a signal detector (218) for detecting said power loss signal (214) emitted by said signal provider (210), a sleep circuit (220) for disabling a telephony interface circuit (222) when AC main power is unavailable, an activation switch (224) for enabling said telephony interface circuit (222) when AC main power is unavailable, a telephony service indicator (228) for indicating telephone service availability when said telephony interface circuit (222) is enabled.
A system for providing on-demand battery backup for cable telephony devices comprising:
- means for converting AC main power to DC power (206);
- means for charging a battery (206);
- means for providing regulated power to a cable modem device (206);
- means for detecting the presence of AC main power (210);
- means for providing a signal to a cable modem device to indicate when AC main power is unavailable (210);
- means for detecting said signal by said cable modem device (218);
- means for entering sleep mode and disabling a telephony interface by said cable modem device (220);
- means for activating a telephony device (224);
- means for exiting sleep mode and enabling a telephony interface by said cable modem device upon said activation of a telephony device (220);
- and
- means for signaling telephony service availability by said cable modem device (228).
A method for providing on-demand battery backup for cable telephony devices comprising the steps of:
- converting AC main power to DC power (102);
- charging a battery (104);
- providing regulated power to a cable modem device (106);
- detecting the presence of AC main power (108);
- providing a signal to a cable modem device to indicate when AC main power is unavailable (110);
- detecting said signal by said cable modem device (112);
- entering sleep mode (114) and disabling said telephony interface;
- exiting sleep mode and enabling a telephony interface by said cable modem device upon activation of said cable telephony device (116);
- and
- signaling telephony service availability by said cable modem device (118).
An on-demand battery backup for cable telephony devices comprising:
- an AC main power to DC power converter (206) for charging a battery, a power regulator for providng power to a cable modem device (206);
- and
- an AC main power detector (210) for providing a signal to the cable modem device to indicate when AC main power is unavailable (210).
A cable telephony device comprising:
- a signal detector indicating when AC power is unavailable;
- means for entering sleep mode and disabling a telephony interface by said cable modem device (220);
- means for activating a telephony device (224);
- means for exiting sleep mode and enabling a telephony interface by said cable modem device upon said activation of a telephony device (220);
- and
- means for signaling telephony service availability by said cable modem device (228).
Dependencies are inferred from the claim text.