Method and apparatus for utilizing extended AV/C command frames including status inquiry, notify inquiry and control inquiry command types
First Claim
1. A method of inquiring of capabilities of a target device comprising:
- a. sending an inquiry command including an opcode and any number of operands over a network from a controller to a target device;
b. determining at the target device if the target device supports the opcode and operands; and
c. sending a response command from the target device to the controller over the network informing the controller if the target device supports the opcode and operands.
1 Assignment
0 Petitions
Accused Products
Abstract
A modified AV/C command set includes status inquiry, notify inquiry and control inquiry commands. The status inquiry, notify inquiry and control inquiry commands include an opcode and any number of operands. Thus, the status inquiry, notify inquiry and control inquiry commands can include only an opcode. The status inquiry, notify inquiry and control inquiry commands are sent from a controller to a target device to determine if the target device supports a particular status, notify or control command, respectively. In response to a status inquiry, notify inquiry or control inquiry command, a target device sends a response to the controller notifying the controller as to whether or not the target device supports the particular command.
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Citations
37 Claims
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1. A method of inquiring of capabilities of a target device comprising:
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a. sending an inquiry command including an opcode and any number of operands over a network from a controller to a target device;
b. determining at the target device if the target device supports the opcode and operands; and
c. sending a response command from the target device to the controller over the network informing the controller if the target device supports the opcode and operands. - View Dependent Claims (2, 3, 4, 5)
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6. A method of inquiring of capabilities of a target device comprising:
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a. sending an inquiry command, selected from a group of a status inquiry command and a notify inquiry command, including an opcode, over a network from a controller to a target device;
b. determining at the target device if the target device supports the opcode; and
c. sending a response command from the target device to the controller over the network informing the controller if the target device supports the opcode. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A control device for communicating with a target device over a network, the control device comprising:
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a. means for generating an inquiry command including an opcode and any number of operands; and
b. means for communicating coupled to the means for generating and configured for coupling to the network for sending the inquiry command over the network to the target device and receiving a response command from the target device, wherein the response command includes notification informing the control device if the target device supports the opcode and operands. - View Dependent Claims (13, 14, 15, 16)
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17. A control device configured to communicate with a target device over a network, the control device comprising:
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a. a data packet generating circuit to generate an inquiry command including an opcode and any number of operands; and
b. an interface circuit coupled to the data packet generating circuit and configured to couple to the network to send the inquiry command over the network to the target device and receive a response command from the target device, wherein the response command includes notification informing the control device if the target device supports the opcode and operands. - View Dependent Claims (18, 19, 20, 21)
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22. A control inquiry AV/C command data packet used to inquire about capabilities relative to a control command of a target device over a network comprising:
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a. an opcode; and
b. one or more operands. - View Dependent Claims (23)
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- 24. A status inquiry AV/C command data packet used to inquire about capabilities relative to a status command of a target device over a network, the status inquiry AV/C command data packet comprising an opcode.
- 27. A notify inquiry AV/C command data packet used to inquire about capabilities relative to a notify command of a target device over a network, the notify inquiry AV/C command data packet comprising an opcode.
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30. A method of inquiring of capabilities of a target device from a control device over an IEEE 1394 serial bus comprising:
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a. submitting an AV/C inquiry command data packet from a control device over the serial bus to a target device, wherein the inquiry command data packet includes an opcode and any number of operands;
b. receiving the inquiry command data packet at the target device and generating a response data packet therefrom, wherein the response data packet specifies whether the target device supports the opcode and operands; and
c. transmitting the response data packet to the control device. - View Dependent Claims (31, 32, 33)
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34. A network of devices coupled together by a standard IEEE 1394 serial bus comprising:
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a. a control device in communication with the standard IEEE 1394 serial bus and configured for sending an inquiry command including an opcode and any number of operands over the standard IEEE 1394 serial bus; and
b. a target device in communication with the standard IEEE 1394 serial bus and configured for receiving the inquiry command, determining if the target device supports the opcode and operands and sending a response command to the control device over the standard IEEE 1394 serial bus informing the control device if the target device supports the opcode and operands. - View Dependent Claims (35, 36, 37)
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Specification