Circuitry to establish a wireless communication link
First Claim
Patent Images
1. Circuitry to transmit a data signal over a wireless communication link, comprising:
- a receiver that receives the data signal from a telephone line;
an automatic gain control circuit that keeps a peak amplitude of the data signal substantially constant and within a predetermined linear amplification range prior to a start-up procedure for establishing the wireless communication link; and
a transmitter that receives the data signal from the automatic gain control circuit and that outputs the data signal, the transmitter having the predetermined linear amplification range, wherein the data signal is not subjected to echo cancellation by an echo canceller prior to output by the transmitter.
1 Assignment
0 Petitions
Accused Products
Abstract
Circuitry to transmit an analog data signal over a wireless communication link includes a receiver that receives a data signal, an automatic gain control circuit that keeps a peak amplitude of the data signal substantially constant and within a predetermined linear amplification range, and a transmitter, having the predetermined linear amplification range, that receives the data signal from the automatic gain control circuit and that outputs the data signal.
-
Citations
34 Claims
-
1. Circuitry to transmit a data signal over a wireless communication link, comprising:
-
a receiver that receives the data signal from a telephone line; an automatic gain control circuit that keeps a peak amplitude of the data signal substantially constant and within a predetermined linear amplification range prior to a start-up procedure for establishing the wireless communication link; and a transmitter that receives the data signal from the automatic gain control circuit and that outputs the data signal, the transmitter having the predetermined linear amplification range, wherein the data signal is not subjected to echo cancellation by an echo canceller prior to output by the transmitter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. An apparatus for transmitting a data signal over a wireless communication link, comprising:
-
a base unit having a wired connection to a telephone line, the base unit transmitting data to and from the telephone line via the wired connection; and a remote unit having a wired connection to a modem, the remote unit transmitting data to and from the modem via the wired connection, the remote unit and the base unit communicating with each other over the wireless communication link; wherein the base unit comprises; a radio frequency transmitter to transmit an analog data signal to the remote unit; an automatic gain control circuit that keeps a peak amplitude of the analog data signal substantially constant and within a predetermined linear amplification range of the radio frequency transmitter prior to a start-up procedure for establishing the wireless communication link wherein the analog data signal is not subjected to echo cancellation by an echo canceller prior to output by the radio frequency transmitter. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
-
23. A system for transmitting analog data or voice over a wireless communication link, the system comprising:
-
a handset comprising a switch that switches between analog data transmission and voice transmission over the wireless communication link, the switch operating in response to a voltage that is based on connection of a telephone cord; and a base station that receives an analog data signal from a telephone line, the base station comprising; a radio frequency transmitter to transmit the analog data signal to the handset; and an automatic gain control circuit that keeps a peak amplitude of the analog data signal substantially constant and within a predetermined linear amplification range of the radio frequency transmitter prior to a start-up procedure for establishing the wireless communication link wherein the analog data signal is not subjected to echo cancellation by an echo canceller prior to output by the radio frequency transmitter. - View Dependent Claims (24, 25, 26)
-
-
27. Circuitry to transmit an analog data signal over a wireless communication link, comprising:
-
a receiver that receives a data signal; an automatic gain control circuit that keeps a peak amplitude of the data signal substantially constant and within a predetermined linear amplification range prior to a start-up procedure for establishing the wireless communication link; and a transmitter that receives the data signal from the automatic gain control circuit and that outputs the data signal, the transmitter having the predetermined linear amplification range; wherein the automatic gain control circuit uses a dial tone of a telephone connection to set a gain level for the data signal, the gain level remaining substantially constant during communication, and wherein the circuitry does not include an echo canceller. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34)
-
Specification