Multiprotocol directed infrared communication controller

Claim 2

A controller system for use in a communication transceiver having a bus for internally transferring signals, comprising: a plurality of modem means for selectively modulating and demodulating synchronous and asynchronous signals with respective coding formats, at least one of said modem means encoding asynchronous signals and at least one of said modem means encoding synchronous signals; a UART connected between said bus and at least one of said asynchronous signal encoding modem means for transferring asynchronous signals therebetween; a synchronous/asynchronous communication controller (SACC) means, connected between said bus and said plurality of modem means, for transferring asynchronous signals between said bus and said asynchronous signal encoding modem means and transferring synchronous signals between said bus and said synchronous signal encoding modem means, whereby said controller system modulates and demodulates signals with both synchronous and asynchronous coding formats; and further comprising: checking means for checking a signal for integrity; and a second UART, connected between said UART and said bus, for intercepting and transmitting an input signal to said checking means for an integrity check.

Claim 3

The system of claim 1 wherein said plurality of modem means comprises an IRDA MODEM and an NRZI MODEM.

Claim 4

The system of claim 1 wherein said plurality of modem means comprises an IRDA MODEM and a Biphase MODEM.

Claim 5

The system of claim 1 wherein said plurality of modem means comprises an ASK MODEM.

Claim 6

The system of claim 1 further comprising Direct Memory Access means coupled to said UART and said SACC means.

Claim 7

The system of claim 1 further comprising means for selectively managing the power supplied to said UART, SACC, and said plurality of MODEM means.

Claim 8

The system of claim 1 further comprising: receiving means, connected to said plurality of modem means, for receiving and feeding modulated signals thereto; and transmitting means, connected to said plurality of modem means, for transmitting modulated signals therefrom.

Claim 9

The system of claim 7 further comprising gain control means, connected to said receiving means and said transmitting means, for controlling the gain of said modulated signals.

Claim 10

The system of claim 7 further comprising echo cancelling means, connected to said receiving means and said transmitting means, for gating off said receiving means for a predetermined period after the output of a transmitted signal on said transmitting means.

Claim 11

The system of claim 7 further comprising IR output means, connected to said transmitting means, for converting transmitted signals from said transmitting means to IR light signals.

Claim 12

The system of claim 1 further comprising clock means, connected to said SACC, for producing synchronous data rates of 2.34 Mbps, 1.152 Mbps, 576 Kbps, 288 Kbps, and 144 Kbps.

Claim 13

The system of claim 1 wherein said SACC means further comprises: means for performing address recognition; means for CRC calculation; and means for frame status maintenance.

Claim 14

A controller system for use in a communication transceiver having a bus for internally transferring signals, comprising: a plurality of modem means for selectively modulating and demodulating synchronous and asynchronous signals with respective coding formats, at least one of said modem means encoding asynchronous signals and at least one of said modem means encoding synchronous signals; a UART connected between said bus and at least one of said asynchronous signal encoding modem means for transferring asynchronous signals therebetween; a synchronous/asynchronous communication controller (SACC) means, connected between said bus and said plurality of modem means, for transferring asynchronous signals between said bus and said asynchronous signal encoding modem means and transferring synchronous signals between said bus and said synchronous signal encoding modem means, whereby said controller system modulates and demodulates signals with both synchronous and asynchronous coding formats; and wherein said plurality of modem means comprises: an IRDA MODEM, an NRZI MODEM, a Biphase MODEM, an ASK MODEM, and a CD MODEM; and further comprising means for enabling said IRDA MODEM, ASK MODEM, and CD MODEM, and either one of said NRZI or Biphase MODEMs, at the same time, when said MODEMS are ready to receive an incoming signal.

Claim 15

A controller system for use in a communication transceiver having a bus for internally transferring signals, comprising: a plurality of modem means for selectively modulating and demodulating synchronous and asynchronous signals with respective coding formats, at least one of said modem means encoding asynchronous signals and at least one of said modem means encoding synchronous signals; a UART connected between said bus and at least one of said asynchronous signal encoding modem means for transferring asynchronous signals therebetween; a synchronous/asynchronous communication controller (SACC) means, connected between said bus and said plurality of modem means, for transferring asynchronous signals between said bus and said asynchronous signal encoding modem means and transferring synchronous signals between said bus and said synchronous signal encoding modem means, whereby said controller system modulates and demodulates signals with both synchronous and asynchronous coding formats; and wherein said plurality of modem means comprises: an IRDA MODEM, an NRZI MODEM, a Biphase MODEM, an ASK MODEM, and a CD MODEM; and further comprising means for enabling said IRDA MODEM, ASK MODEM, and CD MODEM, and either one of said NRZI or Biphase MODEMs, at the same time, when said MODEMS are ready to receive an incoming signal.

Claim 16

The system of claim 13 further comprising: means, in said SACC, for detecting a transition in an incoming signal; and means, coupled to said SACC, for measuring the pulse width and carrier frequency of said incoming signal.

Claim 19

The method of claim 15 wherein said plurality of modems comprises an IRDA MODEM and an NRZI MODEM.

Claim 20

The method of claim 15 wherein said plurality of modems comprises an IRDA MODEM and a Biphase MODEM.

Claim 21

The method of claim 15 wherein said plurality of modems comprises an ASK MODEM.

Claim 22

The method of claim 15 further comprising the step of connecting a clock to said SACC, for producing synchronous data rates of 2.34 Mbps, 1.152 Mbps, 576 Kbps, 288 Kps, and 144 Kbps.

Claim 23

The method of claim 15 further comprising the steps of using said SACC for performing address recognition, CRC calculation, and frame status maintenance.

Claim 26

The method of claim 21 further comprising: means, in said SACC, for detecting a transition in an incoming signal; and means, coupled to said SACC, for measuring the pulse width and carrier frequency of said incoming signal.

Claim 27

The system of claim 13 further comprising Direct Memory Access means coupled to said UART and said SACC means.

Claim 28

The system of claim 13 further comprising means for selectively managing the power supplied to said UART, SACC, and said plurality of MODEM means.

Claim 29

The system of claim 13 further comprising: receiving means, connected to said plurality of modem means, for receiving and feeding modulated signals thereto; and transmitting means, connected to said plurality of modem means, for transmitting modulated signals therefrom.

Claim 30

The system of claim 25 further comprising gain control means, connected to said receiving means and said transmitting means, for controlling the gain of said modulated signals.

Claim 31

The system of claim 25 further comprising echo cancelling means, connected to said receiving means and said transmitting means, for gating off said receiving means for a predetermined period after the output of a transmitted signal on said transmitting means.

Claim 32

The system of claim 25 further comprising IR output means, connected to said transmitting means, for converting transmitted signals from said transmitting means to IR light signals.

Claim 33

The method of claim 21 further comprising the step of connecting a clock to said SACC, for producing synchronous data rates of 2.34 Mbps, 1.152 Mbps, 576 Kbps, 288 Kbps, and 144 Kbps.

Claim 34

The method of claim 21 further comprising the steps of using said SACC for performing address recognition, CRC calculation, and frame status maintenance.