Data transmission method by polling and terminal apparatus for use in the method
AssigneeFujitsu Limited
InventorsTomoki Shibasaki, Akio Murata
Life of this patent
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Abstract
In a data transmission method according to the present invention, a transmission request is forwarded from a host apparatus to a terminal apparatus. When receiving the transmission request, the terminal apparatus forwards a communication request to the host apparatus. In this communication request, a timer value of a system timer included in the terminal apparatus is incorporated. Having received the communication request including the timer value, the host apparatus establishes an ID for the terminal apparatus according to the timer value. Then, the host apparatus conducts polling for collecting data from the terminal apparatus using the established ID.
Claims20
A data transmission method for transmitting data in a system having a host apparatus and at least one terminal apparatus, comprising the steps of:
- forwarding a transmission request from the host apparatus to the terminal apparatus;
- forwarding a communication request from the terminal apparatus to the host apparatus in response to the transmission request, the communication request containing a timer value of a timer contained in the terminal apparatus;
- and
- conducting polling from the host apparatus to the terminal apparatus, which has forwarded the communication request, according to an identification information based on the received timer value.
A data transmission method for transmitting data in a system having a host apparatus and at least one terminal apparatus connected to the host apparatus, comprising the steps of:
- forwarding a transmission request from the host apparatus to the terminal apparatus;
- forwarding a communication request from the terminal apparatus to the host apparatus corresponding to said transmission request, said communication request including a timer value of a timer contained in the terminal apparatus;
- establishing an identification information for the terminal apparatus, which has forwarded the communication request, according to the timer value contained in the communication request when said host apparatus receives the communication request from the terminal apparatus;
- and
- conducting polling for transmitting data between the host apparatus and the terminal apparatus according to the identification information based on the timer value.
A terminal apparatus for use in data transmission with an external apparatus, comprising:
- a timer;
- a memory for storing a value of said timer when the terminal apparatus can communicate with the host apparatus;
- and
- a controller for forwarding a reply to a transmission request which is received from the host apparatus, said controller incorporating said timer value into the reply and forwarding it to the host apparatus.
A terminal apparatus, for use in data transmission with a host apparatus, comprising:
- a communication adapter connected with the host apparatus through a communication line;
- and
- a portable terminal which is connectable with the host apparatus through said communication adapter, said portable terminal including,
- a timer;
- a memory for storing a value of said timer when the terminal apparatus can communicate;
- and
- a controller for forwarding a reply for a transmission request which is received from the host apparatus, said controller incorporating said timer value into the reply and forwarding it to the host apparatus through said communication adapter.
A terminal apparatus, to be attached to a communication adapter, which transmits data between an external device through the communication adapter, comprising:
- a timer;
- a memory for storing a value of the timer at the time the terminal apparatus can communicate;
- and
- a controller for forwarding a communication request to the external device when the terminal apparatus receives a transmission request from the external device;
- wherein the controller sends the timer value stored in the memory with the communication request.
A communication apparatus for use in data transmission with at least one terminal apparatus connected to the communication apparatus, the communication apparatus comprising:
- a communication controller for forwarding a transmission request to said terminal apparatus and for receiving from said terminal apparatus a reply corresponding to the transmission request;
- an identification information establishing unit for extracting a timer value obtained from said terminal apparatus from the reply, which is received from the terminal apparatus by said communication controller;
- and
- a polling unit for implementing polling to the terminal apparatus using the identifying information based on the timer value.
A data transmission system for transmitting data between a terminal apparatus and a host apparatus, said terminal apparatus comprising:
- a timer;
- a memory for storing a value of said timer when the terminal apparatus can communicate with the host apparatus;
- and
- a controller for forwarding a reply for a transmission request which is received from the host apparatus, said controller incorporating said timer value into the reply and forwarding it to the host apparatus;
- and
- said host apparatus comprising:
- a communication controller for forwarding the transmission request to said terminal apparatus and for receiving from said terminal apparatus the reply corresponding to the transmission request;
- an identification information establishing unit for extracting the timer value incorporated in the reply received by said communication controller from said terminal apparatus, and for establishing an identification information for the terminal apparatus according to the extracted timer value;
- and
- a polling unit for implementing polling to the terminal apparatus using the identifying information established by said identification information establishing unit.
Dependencies are inferred from the claim text.