Display system and operation optimization method

The present disclose provides a display system. The display system comprises a signal source unit a signal source unit, a transmission unit and a display unit. The signal source unit is complied with a first standard and used for providing an image signal. The transmission unit is coupled to the signal source unit, and used for transmitting the image signal, wherein the transmission unit has a plurality of pins. The display unit is complied with a second standard and coupled to the transmission unit. The display unit comprises a detection unit and a determination unit. The detection unit is used for detecting the plurality of pins. The determination unit is couple to the detection unit and used for determining voltage levels of the pins, determining the first standard according to the voltage level of the pins and configuring the display device into a corresponding mode according to the first standard.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a display system and operation optimization method, and more particularly, to a display system and operation optimization method without an adaptor.

2. Description of the Prior Art

So far the current electronic devices have a higher and higher demand for the audio/video and data transmission, forcing the high speed transmission interface technology to keep improving. Some transmission interface technologies, for example digital visual interface (DVI), VGA, low voltage differential signaling (LVDS), are not able to meet the demands in the market. Although high definition multimedia interface (HDMI) has advantages of wide transmission bandwidth, digital data encryption and hybrid transmission for the audio and video, the authorization fee is prohibitive. Thus, display port interface technology which has high compatibility and no patent fee is overwhelming in the market.

In order to communicate with other interfaces, Display Port has developed an extension interface called Dual Mode Display Port (DP++).

SUMMARY OF THE INVENTION

It's therefore an objective of the present invention to provide a display system to achieve the best operation optimization.

The present invention discloses a display system. The display system comprises a signal source unit a signal source unit, a transmission unit and a display unit. The signal source unit is complied with a first standard and used for providing an image signal. The transmission unit is coupled to the signal source unit, and used for transmitting the image signal, wherein the transmission unit has a plurality of pins. The display unit is complied with a second standard and coupled to the transmission unit. The display unit comprises a detection unit and a determination unit. The detection unit is used for detecting the plurality of pins. The determination unit is couple to the detection unit and used for determining voltage levels of the plurality of pins, determining the first standard according to the voltage level of the plurality of pins, and configuring the display device into a corresponding mode.

The present invention further discloses an operation optimization method for a display device. The operation optimization method comprises receiving an image signal; detecting a plurality of pins of a transmission unit; determining voltage levels of the plurality of pins of the transmission unit; determining a source standard of the image signal according to the voltage levels of the plurality of pins; and configuring the display device into a corresponding mode according to the source standard of the image signal.

DETAILED DESCRIPTION

Please refer toFIG. 1, which is an exemplary display system10. The display system10includes a signal source unit120, a transmission unit140and a display unit160. The signal source unit120is used for providing an image signal with a first format. Preferably, the signal source unit120could be a desktop, a DVD player, a laptop or a mobile phone and has a reception port C1−. The signal source unit120may comply with a High Definition Multimedia Interface (HDMI) standard, a Digital Visual Interface (DVI) standard, a Mobile High-Definition Link (MHL) standard or a Display Port (DP) standard. The transmission unit could be a transmission line, which has a first connector C1+ and a second connector C2+. The first connector C1+ is coupled to the signal source unit120, and paired up with the reception port C1−. The display unit160includes a reception port C2−, a detection unit161and a determination unit162. In some examples, the detection unit161could be implemented by a Level Shifting/Discovery circuit and the determination unit162could be implemented by a scaler circuit. The reception port C2− is coupled to the transmission unit140and paired up with the second connector C2+. The detection unit161is used for detecting multiple pins on the second connector C2+ and providing the detected signal for the determination unit162and performing voltage switch according to a signal mode. The determination unit162is coupled to the detection162for determining voltage levels of multiple pins on the second connector C2+ and determining which standard is used in the signal source unit120according to the voltage levels of pins on the connector C2+ and configuring the display unit160to a second format according to the first format of the image signal and correspondingly controlling the detection unit161. The display unit160complies with a Dual mode Display Port (DP++) standard and the display unit160can configures itself to a corresponding format. Therefore, a user does not need to purchase an adaptor, which facilitates the operation and reduces the cost.

The detailed operation of the display system10is elaborated in as follows. The display unit160starts initializing after the display unit160is plugged in a power outlet. The display unit160is turned on when the power button is hit. The determination unit162controls the detection unit161to perform detection. When the detection unit161receives a status of a pin13on the second connector C2+ the detection unit161detects the voltage level of the pin13. If the voltage level of the pin13is high, the detection unit161further detects a status of a pin14on the second connector C2+. If the pin14is high, the determination unit162determines that the signal source unit120complies with the HDMI standard and configures a signal input into a HDMI mode. If the pin14is low, the determination162determines that the signal source unit120complies with the DVI standard and configures the signal input into a DVI mode. If the Pin13is low, the determination unit162determines a status of a pin2on the connector C2+, whether the pin2is connected to a pin20on the connector C1+ through a resistor. If the pin2on the connector C2+ is connected to the pin20on the connector C1+ through the resistor, the determination unit162determines that the signal source unit120complies with the MHL standard and configures the signal input into a MHL mode. If the pin2on the connector C2+ is not connected to the pin20on the connector C1+ through the resistor, the determination unit162controls the detection unit161to detect a status of a pin16on the connector C2+. If the pin16is low, the determination unit162configures the signal input into a DP mode. If the pin16is high, the determination unit162determines that the transmission140is not connected to the display unit160. Please note that the pins13,14,16and20are detected in the examples of the present disclosure, but not limited herein. Any pin which can be used to determine the HDMI, DVI, MHL or DP standard is included within the scope of this invention.

Please refer toFIG. 2, which is an exemplary pin mapping diagram20for the transmission unit140. The left side of the pin mapping diagram20illustrates a pin layout for the HDMI standard while the right side of the pin mapping diagram20illustrates a pin layout for the DP++ standard. As seen in the pin mapping diagram20, the pins13and14for the DP++ is not assigned for any purpose originally. Therefore, the present disclosure uses them to detect the transmission unit140. Please further refer toFIGS. 3 and 4, which are exemplary pin mapping diagrams30and40for the transmission unit140. The pin mapping diagrams30illustrates the mapping between the DVI pin layout and the DP++ pin layout . The pin mapping diagram40illustrates the mapping between the MHL pin layout the DP++ pin layout.

The operation of the display system10can be synthesized into a process50. The process50is used in the display system and includes the following steps:

Step506: Detect the pin13of the second connector C2+.

Step508: Determine whether the pin13is high. If so, go to Step510or Step518; otherwise, go to Step524.

Step510: Detect the pin14of the second connector C2+.

Step512: Determine whether the pin14is high. If so, go to Step514; otherwise, go to Step516.

Step514: Determine that the signal source unit120complies with the HDMI standard and configure the display unit160to receive a HDMI image signal and go to Step532.

Step516: Determine that the signal source unit120complies with the DVI standard, and configure the display unit160to receive a DVI signal and go to Step532.

Step518: Detect the pin2of the second connector C2+.

Step520: Determine whether the pin2of the second connector C2+ is connected to the pin20of the first connector C1+ through the resistor. If so, go to Step522; otherwise, go to Step524.

Step522: Determine that the signal source unit120complies with the MHL standard and configure the display unit160to receive a MHL signal.

Step524: Detect the pin16of the second connector C2+.

Step526: Determine whether the pin16is high. If so, go to Step528; otherwise, go to Step504.

Step528: Determine that the transmission unit140is not connected to the display unit160, go to Step504.

Step530: Determine that the signal source unit120complies with the DP standard and configure the display unit160to receive a DP signal, and go to Step532.

The detail description of the process50can be found above, and thus omitted herein.

To sum up, the exemplary display system of the present disclosure can connect the display unit using the DP++ standard and the signal source unit using other interface standards as well as provides a simpler user interface. The users can operate the display system easily without purchasing an extra adaptor.