Communication Device, Communication System, Communication Method, Communication Program, and Communication Circuit
First Claim
1. A communication device, serving as a primary station which carries out communication with a secondary station, comprising:
- a first protocol control section for transmitting a first connection request command, so that a communication connection between the communication device and the secondary section is established;
a second protocol control section for transmitting a station-search command to confirm a presence of the secondary station and then transmitting a second connection request command, so that a communication connection between the communication device and the secondary section is established; and
a protocol switching section for causing the second protocol control section to transmit the station-search command when the first protocol control section transmits the first connection request command and then does not receive a connection response to the first connection request command from the secondary station within a predetermined time.
1 Assignment
0 Petitions
Accused Products
Abstract
A transmitter (1) which transmits a predetermined amount of transfer data using an infrared ray includes: a controller (13) for transmitting an SNRM command to the other station without transmitting a station-search command (XID) for searching the other station, the SNRM command including parameters such as maximum transferable speed and maximum receivable data length of the transmitter (1); and a transmission section (14). Consequently, it is possible to shorten a time necessary for a connection between the transmitter and the receiver. This allows shortening a time from the start of communication to the end of the communication in transmitting information data.
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Citations
26 Claims
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1. A communication device, serving as a primary station which carries out communication with a secondary station, comprising:
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a first protocol control section for transmitting a first connection request command, so that a communication connection between the communication device and the secondary section is established; a second protocol control section for transmitting a station-search command to confirm a presence of the secondary station and then transmitting a second connection request command, so that a communication connection between the communication device and the secondary section is established; and a protocol switching section for causing the second protocol control section to transmit the station-search command when the first protocol control section transmits the first connection request command and then does not receive a connection response to the first connection request command from the secondary station within a predetermined time. - View Dependent Claims (2, 17, 18, 21, 22, 23, 24, 25, 26)
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3. A communication device, serving as a secondary station which carries out communication with a primary station, comprising:
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a first protocol control section for, when receiving a first connection request command from the primary station, transmitting a connection response to the first connection request command, so that a connection is established; a second protocol control section for transmitting a station-search response to a station-search command from the primary station, and then transmitting a connection response to a second connection request command, so that a connection is established; and a protocol switching section for causing the second protocol control section to transmit the station-search response, when the communication device receives two or more of the station-search commands in which whole slot numbers are set to 1, or receives one of the station-search commands in which whole slot numbers are set to a number other than 1, without receiving the first connection request command from the primary station. - View Dependent Claims (4, 19)
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5. A communication method of a communication device serving as a primary station which carries out communication with a secondary station, comprising the steps of:
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transmitting a first connection request command in accordance with a first protocol defining that the first connection request command is to be transmitted so as to establish a communication connection with the secondary station, and thereafter; when the communication device does not receive a connection response to the first connection request command within a predetermined time, transmitting a station-search command to confirm a presence of the secondary station, in accordance with a second protocol defining that the station-search command is to be transmitted and then a second connection request command is to be transmitted so as to establish a communication connection with the secondary station.
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6. A communication method of a communication device serving as a secondary station which carries out communication with a primary station, comprising the step of:
when the communication device does not receive a first connection request command from the primary station not in accordance with a first protocol defining that a connection response is to be transmitted in response to the first connection request command so as to establish a communication connection with the primary station, and when the communication device receives two or more station-search commands in which whole slot numbers are set to 1 or receives a station-search command in which whole slot numbers are set to a number other than 1, transmitting a station-search response in accordance with a second protocol defining that the station-search response is to be transmitted to the station-search command from the primary station and then a connection response is to be transmitted in response to a second connection request command, so as to establish a communication connection with the primary station.
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7. A communication device, serving as a primary station which gets connected with a secondary station using an SNRM frame, the SNRM frame being a transmission/reception frame used in IrLAP (Infrared Link Access Protocol) and having a control field set to an SNRM (Set Normal Response Mode),
said communication device transmitting the SNRM frame in which information indicative of any secondary station is assigned to a destination address field, so as to establish a connection with the secondary station.
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9. A communication device, serving as a secondary station which gets connected with a primary station using an SNRM frame, the SNRM frame being a transmission/reception frame used in IrLAP (Infrared Link Access Protocol) and having a control field set to an SNRM (Set Normal Response Mode),
when receiving the SNRM frame in which information indicative of any secondary station is assigned to a destination address field, said communication device transmitting a UA (Unnumbered Acknowledgement) frame to carry out a connection response.
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11. A communication device, serving as a secondary station which gets connected with a primary station using an SNRM frame, the SNRM frame being a transmission/reception frame used in IrLAP (Infrared Link Access Protocol) and having a control field set to an SNRM (Set Normal Response Mode),
when the received SNRM frame includes a communication direction control field to which a value specifying one-way communication not requiring a response from the secondary section is assigned, said communication device finishing a connection process without transmitting a UA (Unnumbered Acknowledgement) frame.
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12. A communication method of a communication device serving as a primary station which gets connected with a secondary station using an SNRM frame, the SNRM frame being a transmission/reception frame used in IrLAP (Infrared Link Access Protocol) and having a control field set to an SNRM (Set Normal Response Mode), comprising the step of:
assigning information indicative of any secondary station to a destination address field of the SNRM frame and transmitting the SNRM frame, so that a connection between the communication device and the secondary station is established. - View Dependent Claims (13)
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14. A communication method of a communication device serving as a secondary station which gets connected with a primary station using an SNRM frame, the SNRM frame being a transmission/reception frame used in IrLAP (Infrared Link Access Protocol) and having a control field set to an SNRM (Set Normal Response Mode), comprising the step of
transmitting a UA (Unnumbered Acknowledgement) frame to carry out a connection response, when the communication device receives the SNRM frame in which information indicative of any secondary station is assigned to a destination address field.
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16. A communication method of a communication device serving as a secondary station which gets connected with a primary station using an SNRM frame, the SNRM frame being a transmission/reception frame used in IrLAP (Infrared Link Access Protocol) and having a control field set to an SNRM (Set Normal Response Mode), comprising the step of
finishing a connection process without transmitting a UA (Unnumbered Acknowledgement) frame, when the received SNRM frame includes a communication direction control field to which a value specifying one-way communication not requiring a response from the secondary station is assigned.
Specification