Method and system for generating and transferring error detection information over a bus

In a data communication system, a method of providing error detection information for data transferred between a sender and a receiver interconnected via bus, comprising the steps of:

• (a) the sender transmitting data to the receiver on the bus, wherein said data comprises one or more data units, and for each data unit, the sender placing a data unit on the bus and transmitting a request signal to the receiver to signal the receiver of said data unit on the bus, and the receiver latching said data unit from the bus upon receiving said request signal and transmitting and acknowledge signal to the receiver;
• (b) the sender generating error detection information for the transmitted data;
• (c) sender transmitting a notification signal to the receiver to indicate start error detection information transfer;
• and
• (d) the sender transmitting the error detection information to the receiver on the bus.

In a data communication system, a method of providing error detection information for data transferred between a sender and a receiver interconnected via a bus, comprising the steps of:

• (a) the sender transmitting data to the receiver on the bus, wherein said data comprises one or more data units, and for each data unit, the sender placing a data units on the bus and sequentially transmitting one or more corresponding request signals to the receiver to the signal the receiver of said data units on the bus;
• (b) the sender generating error detection information for the transmitted data, wherein said error detection information comprises one or more information units;
• and
• (c) for each information unit;
• the sender transmitting a notification signal to the receiver to indicate start of that information transfer and the sender placing that information unit on the bus and transmitting a request signal to the receiver to signal the receiver of said information on the bus.

In a data communication system, a method of providing error correction information for data transferred from a host device to a peripheral device interconnected via a bus, comprising the steps of:

• (a) the peripheral device transmitting a request signal to the host device requesting data;
• (b) the host device transmitting data to the peripheral device on the bus in response to the request signal;
• (c) the peripheral device transmitting a notification signal to the host device requesting error detection information for said data;
• (d) the host device generating error detection information for said data;
• and
• (e) the host device transmitting the error detection information to the peripheral device on the bus in response to said notification signal.

In a data communication system, a method of providing error correction information for data transferred from a host device to a peripheral device interconnected via a bus, comprising the steps of:

• (a) the peripheral device transmitting one or more request signals to the host device requesting one or more data units;
• (b) the peripheral device transmitting one or more notification signals to the host device requesting one or more error detection information units for said data units;
• (c) the host device transmitting one or more data units to the peripheral device on the bus in response to said request signals for data units;
• (d) the host device generating one or more error detection information units for said data units;
• and
• (e) the host device transmitting the error detection information units to the peripheral device on the bus in response to said notification signals for information units.

In a data communication system including a system bus, at least one sender device and at least one receiver device, each of the devices coupled to the bus for selectively controlling the bus to transmit data via the bus, the sender device comprising:

• (a) a first communication module for transmitting data units to the receiver device on the bus;
• (b) a first code generator for generating error detection information units for the transmitted data units;
• and
• (c) a first signal generator for transmitting a notification signal to the receiver device to indicate start of error detection information transfer, wherein the bus comprises a parallel bus including a parity bit signal transmission means, and wherein the signal generator utilizes said transmission means to transmit said notification signal instead of a parity bit signal;
• and
• (d) a first controller for controlling the first communication module, the first code generator and the first signal generator, for communicating with the receiver device via the bus, whereby the first communication module transmits the data units to the receiver device on the bus, the first code generator generates error detection information units for the transmitted data units, the first signal generator transmits a notification signal to the receiver device to indicate start of error detection information transfer, and the first communication module transmits the error detection information units to the receiver device on the bus.

In a data communication system including a system bus, at least one sender device and at least one receiver device, each of the devices coupled to the bus for selectively controlling the bus to transmit data via the bus, wherein:

• the sender device comprises:
• (a) a first communication module for transmitting data units to the receiver device on the bus, wherein for each data unit, the first communication module places a data unit on the bus and transmits a request signal to the receiver to notify the receiver of said data unit on the bus;
• (b) a first code generator for generating error detection information units for the transmitted data units;
• and
• (c) a first signal generator for transmitting a notification signal to the receiver device to indicate start of error detection information transfer;
• (d) a first controller for controlling the first communication module, the first code generator and the first signal generator, for communicating with the receiver device via the bus, whereby the first communication module transmits the data units to the receiver device on the bus, the first code generator generates error detection information units for the transmitted data units, the first signal generator transmits a notification signal to the receiver device to indicate start of error detection information transfer, and the first communication module transmits the error detection information units to the receiver device on the bus;
• and
• the receiver comprises a second communication module for data communication, wherein, in response to each request signal from the sender device, the second communication module latches a corresponding data unit from the bus and transmits an acknowledge signal to the sender device.

In a data communication system including a system bus, at least one sender device and at least one receiver device, each of the devices coupled to the bus for selectively controlling the bus to transmit data via the bus, the sender device comprising:

• (a) a first communication module for transmitting data units to the receiver device on the bus wherein the first communication module sequentially places one or more data units on the bus and sequentially transmits one or more corresponding request signals to the receiver device to notify the receiver device of said data units on the bus;
• (b) a first code generator for generating error detection information units for the transmitted data units;
• (c) a first signal generator for transmitting a notification signal to the receiver device to indicate start of error detection information transfer wherein for each information unit:
• (1) the first signal generator transmits a notification signal to the receiver to indicate start of error detection information transfer and (2) the first communication module places the information unit on the bus and transmits a request signal to the receiver device to notify the receiver device of said information unit on the bus;
• and
• (d) a first controller for controlling the first communication module, the first code generator and the first signal generator, for communicating with the receiver device via the bus, whereby the first communication module transmits the data units to the receiver device on the bus, the first code generator generates error detection information units for the transmitted data units, the first signal generator transmits a notification signal to the receiver device to indicate start of each information unit transfer, and the first communication module transmits the error detection information units to the receiver device on the bus.

In a data communication system including a system bus, a host device and a peripheral device, each of the devices coupled to the bus for selectively controlling the bus to transmit data via the bus, wherein:

• the peripheral device comprises:
• (a) a first communication module for transmitting request signals to the host device requesting data units;
• (b) a first signal generator for transmitting notification signals to the host device requesting corresponding error detection information units for the data units;
• and
• (c) a first controller for controlling the first communication module and the first signal generator for communicating with the host device via the bus, whereby:
• (1) for each data unit, the first communication module transmits a request signal to the host device requesting a data unit, and (2) the first signal generator transmits notification signals to the host device requesting error detection information for the data units;
• and
• the host device comprises:
• (a) a second communication module for transmitting data units and signals to the peripheral device on the bus;
• (b) a second code generator for generating error detection information units for the transmitted data units;
• and
• (c) a second controller for controlling the second communication module and the second code generator for communicating with the peripheral device via the bus, whereby:
• (1) the second communication module transmits a data unit to the peripheral device in response to each request signal, (2) the second code generator generates error detection information for said data units, and (3) the second communication module transmits the error detection information to the peripheral device on the bus in response to said notification signals.

In a data communication system including a system bus, a peripheral device and a host device, each of the devices coupled to the bus for selectively controlling the bus and transmitting data via the bus, wherein:

• the peripheral device comprises:
• (a) a first communication module for transmitting requests signals to the host device requesting data units;
• (b) a first signal generator for transmitting notification signals to the host device requesting corresponding error detection information units for the data units;
• and
• (c) a first controller for controlling the first communication module and the first signal generator for communication with the host device via the bus, whereby:
• (1) the first communication module sequentially transmits one or more request signals to the host device requesting one or more data units, and (2) the first signal generator transmits one or more notification signals to the host device requesting one or more error detection information units for said data units;
• and
• the host device comprises:
• (a) a second communication module for transmitting data units and signals to the peripheral device on the bus;
• (b) a second code generator for generating error detection information units for the transmitted data units;
• and
• (c) a second controller for controlling the second communication module and second the code generator for communicating with the peripheral device via the bus, whereby:
• (1) the second communication module sequentially transmits one or more data units to the peripheral device on the bus in response to said request signals for data units, (2) the second code generator generates error detection information for said data units, and (3) the second communication module transmits the error detection information units to the peripheral device on the bus in response to said notification signals.