Interface apparatus, communication device including same, and communication method using same
AssigneeSharp Kabushiki Kaisha
InventorsFumihiro Fukae, Hitoshi Naoe
Life of this patent
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Abstract
An interface apparatus of the present invention includes an external state machine 101 for controlling transmission of data and a control code from an own device to a counterpart device in accordance with an inputted control code, and an internal state machine 102 for judging whether the own device is in a data transmission preparatory state or in a data transmission state, and notifies a result of the judgement to the external state machine. The external state machine 101 invalidates the inputted control code during a period in which the internal state machine 102 notifies that the own device is in the data transmission preparatory state.
Claims18
An interface apparatus for sending and receiving data and a control code between an own device and a counterpart device, comprising:
- an external state machine for controlling transmission of the data and the control code from the own device to the counterpart device in accordance with an inputted control code;
- and
- an internal state machine for judging whether the own device is in a data transmission preparatory state or in a data transmission state and notifies a result of the judgement to the external state machine,
- wherein the external state machine invalidates the inputted control code during a period in which the internal state machine notifies that the own device is in the data transmission preparatory state.
An interface apparatus for sending and receiving data and a control code between an own device and a counterpart device, comprising:
- an external state machine for controlling transmission of the data and the control code from the own device to the counterpart device in accordance with an inputted control code;
- a convertor for selectively outputting to the external state machine one of a control code (a) received from the counterpart device and a control code (b) generated by converting the control code (a) received from the counterpart device into a different type in case of necessity;
- and
- an internal state machine for judging whether the own device is in the data transmission preparatory state or in the data transmission state, and notifying a result of the judgement to the convertor,
- wherein the convertor converts the control code (a) received from the counterpart device into a control code irrelevant to control of transmission of the data and the control code of the external state machine and outputs the converted control code to the external state machine during a period in which the internal state machine notifies the own device is in the data transmission preparatory state, whereas the convertor outputs to the external state machine the control code received from the counterpart device without converting during a period in which the internal state machine notifies the own device is in the data transmission state.
An interface apparatus for sending and receiving data and a control code between an own device and a counterpart device, comprising:
- an external state machine for controlling transmission of the data and the control code from the own device to the counterpart device in accordance with an inputted control code;
- a control code generating circuit for generating a control code irrelevant to control of transmission of the data and the control code by the external state machine;
- a switching circuit for switching and outputting the control code generated by the control code generating circuit and the control code received from the counterpart device;
- and
- an internal state machine for judging whether the own device is in the data transmission preparatory state or in the data transmission state, and notifying a result of the judgement to the convertor,
- wherein the switching circuit outputs to the external state machine the control code generated by the control code generating circuit during a period in which the internal state machine notifies the own device is in the data transmission preparatory state, whereas the switching circuit outputs to the external state machine the control code received from the counterpart device during a period in which the internal state machine notifies that the own device is in the data transmission state.
A communication method for sending and receiving data and a control code between an own device and a counterpart device, wherein:
- while the own device is in a data transmission preparatory state, the own device invalidates data and a control code inputted from the counterpart device.
An interface apparatus for sending and receiving data and a control code between the own device and the counterpart device, comprising:
- an external state machine for controlling transmission of the data and the control code from the own device to the counterpart device in accordance with an inputted control code;
- and
- an internal state machine for judging whether the own device is in the data transmission preparatory state or in the data transmission state, and notifies a result of the judgement to the external state machine.
An interface apparatus for sending and receiving data and a control code between the own device and the counterpart device, comprising:
- an external state machine for controlling transmission of the data and the control code from the own device to the counterpart device in accordance with an inputted control code;
- an internal state machine for judging whether the own device is in a data transmission preparatory state or in a data transmission state, and notifies a result of the judgement to the external state machine;
- and
- a decoder for decoding a receipt signal,
- wherein the external state machine invalidates an output signal from the decoder in the data transmission preparatory state and the external state machine validates the output signal from the decoder in the data transmission state.
An interface apparatus for sending and receiving data and a control code between the own device and the counterpart device, comprising:
- an external state machine for controlling transmission of the data and the control code from the own device to the counterpart device in accordance with an inputted control code;
- an internal state machine for judging whether the own device is in the data transmission preparatory state or in the data transmission state, and notifies a result of the judgement to the external state machine,
- wherein timing when output to the external state machine transits is delayed from timing when the own device actually transits from the data transmission preparatory state to the data transmission state.
An interface apparatus, comprising:
- an internal state machine for ensuring a high quality channel;
- and
- output control means for controlling an output signal to an external state machine,
- wherein in a data transmission preparatory state, the interface apparatus outputs, to the external state machine, a control code that appears in a data transmission state no matter whether the interface apparatus receives the control code or not.
An interface apparatus, comprising:
- an internal state machine for ensuring a high quality channel;
- and
- output control means for controlling an output signal to an external state machine,
- wherein in a data transmission preparatory state, the output control means outputs control codes that appear in a data transmission state other than specific codes such as a SUSPEND or a DISABLE.
An interface apparatus, comprising:
- an internal state machine for ensuring a high quality channel;
- and
- output control means for controlling an output signal to an external state machine,
- wherein the output control means keeps outputting a predetermined constant control code to the external state machine in a data transmission preparatory state.
Dependencies are inferred from the claim text.