I/O port assembly of notebook computer connectable to monitor or TV as needed
AssigneeInventec Corporation
InventorMark Lin
Life of this patent
Estimating the term…
Abstract
The invention provides an input/output (I/O) port assembly of a notebook computer connectable to a monitor or a television (TV), which comprises an image processor, an I/O port, and a signal transmission circuit interconnected between the image processor and the I/O port. When I/O port of the computer is coupled to monitor or TV, signal transmission circuit generates different signal voltage states. As such, image processor can output a correct signal to the coupled monitor or TV based on a change of the signal voltage states. With this, the computer is connectable to monitor or TV via a single I/O port and an adapter connected between the I/O port and monitor or TV.
Claims10
An input/output (I/O) port assembly of a notebook computer connectable to monitor or a television (TV) as needed, the I/O port assembly comprising:
- an image processor provided in the computer and including a composite signal contact, a red video signal contact, a green video signal contact, and a blue video signal contact;
- an I/O port provided on a case of the computer and including a red video signal contact, a green video signal contact, and a blue video signal contact;
- and
- a signal transmission circuit interconnected between the image processor and the I/O port and including a composite signal line, a red video signal line, a green video signal line, and a blue video signal line wherein one ends of the red, the green, and the blue video signal lines are coupled to the red, the green, and the blue video signal contacts of the image processor respectively and the other ends thereof are coupled to the red, the green, and the blue video signal contacts of the I/O port respectively, each of the red, the green, and the blue video signal lines is coupled to a first resistor having a predetermined resistance which is in turn connected to ground, and one end of the composite signal line is coupled to the composite signal contact and the other end thereof is coupled to one of the red, the green, and the blue video signal lines.
An input/output (I/O) port assembly of a notebook computer connectable to a monitor or a television (TV) as needed, the I/O port assembly comprising:
- an image processor in the computer and including a composite signal contact, a red video signal contact, a green video signal contact, and a blue video signal contact;
- an I/O port on a case of the computer and including a red video signal contact, a green video signal contact, a blue video signal contact, an open contact, and a ground contact;
- a signal transmission circuit interconnected between the image processor and the I/O port and including a composite signal line, a red video signal line, a green video signal line, and a blue video signal line wherein one ends of the red, the green, and the blue video signal lines are coupled to the red, the green, and the blue video signal contacts of the image processor respectively and the other ends thereof are coupled to the red, the green, and the blue video signal contacts of the I/O port respectively, each of the red, the green, and the blue video signal lines and the composite signal line is coupled to a third resistor having a predetermined resistance which is in turn connected to ground;
- and
- an analog switch on the composite signal line and including a first pin coupled to the composite signal contact of the image processor, a second pin coupled to the open contact, and a third pin serially coupled to the ground contact of the I/O port and a pull-up resistor.
Dependencies are inferred from the claim text.