Interface circuit
AssigneePanasonic Corporation
InventorsTakeshi Kado, Hideo Imai
Life of this patent
Estimating the term…
Abstract
A transmission circuit (101) for transmitting data onto a transmission line, and a mask circuit (102) for generating a mask signal (105) for removing a reflected wave based on a transmission timing notification signal (104) supplied form the transmission circuit (101) are provided. For example, a timer circuit (301) causes the mask signal (105) to be effective only for a predetermined time immediately after transmission. A logic circuit (302) is used to remove a reflected wave from the received signal (106) based on the mask signal (105), and a resultant masked received signal (107) is input to a reception circuit (103).
Claims4
An interface circuit, comprising:
- a transmission circuit connected to a transmission line;
- a reception circuit for receiving a signal via the transmission line from a communication party;
- and
- a masking unit configured to mask a reflected wave of a signal transmitted to the transmission line by the transmission circuit, based on a transmission timing notification signal from the transmission circuit, to supply to the reception circuit a signal received via the transmission line from the communication party, wherein:
- the masking unit comprises a timer circuit and a time measuring circuit,
- the time measuring circuit measures a duration of a received signal immediately after transmission,
- a mask time of the masking unit is controlled based on the duration measured by the time measured circuit, and
- the mask time of the masking unit is set in the timer circuit.
An interface circuit, comprising:
- a transmission circuit connected to a transmission line;
- a reception circuit for receiving a signal via the transmission line from a communication party;
- and
- a masking unit configured to mask a reflected wave of a signal transmitted to the transmission line by the transmission circuit, based on a transmission timing notification signal from the transmission circuit, to supply to the reception circuit a signal received via the transmission line from the communication party, wherein:
- the masking unit comprises a timer circuit and a time setting circuit,
- the time setting circuit receives a reception timing notification signal which indicates a time when a normal received signal arrives,
- a mask time of the masking unit is controlled based on the reception timing notification signal, and
- the time setting circuit sets the mask time in the timer circuit.
Dependencies are inferred from the claim text.