1. A transmitter device for causing a garage door opener to change states after the transmitter device receives a control signal from a first data communication device configured for bi-directional wireless data communications, the garage door opener configured to change states upon receipt of an expected transmission, the transmitter device comprising:
a radio frequency circuit configured to transmit the expected transmission to the door opener;
a second data communication device configured to establish a bi-directional wireless data communication link with the first data communication device and configured to use the bi-directional wireless data communication link with the first data communication device to obtain configuration information, wherein the configuration information includes at least one of a transmission frequency or a code sequence descriptor for the expected transmission, and wherein the control signal is received via bi-directional data communication with the first data communication device;
a memory unit configured to store the configuration information received via the bi-directional wireless data communication link in the first communication session; and
a processing system communicably connected to the radio frequency circuit, the memory unit, and the second data communication device, the processing system configured to automatically cause the radio frequency circuit to transmit the expected transmission to the garage door opener in response to receiving the control signal via the bi-directional wireless data communication link without further user interaction;
wherein the control signal comprises a command message and the expected transmission comprises an RF signal generated and transmitted in response to the command message, and wherein the RF signal is generated using the configuration information received via the bi-directional wireless data communication link.
2. The transmitter device of claim 1, wherein the memory unit is configured to store a second characteristic of a second expected transmission for a second receiving device, wherein the processing system is further configured to determine which of the expected transmission for the receiving device and the second expected transmission for the second receiving device to transmit via the radio frequency circuit based on the command message.
3. The transmitter device of claim 1, wherein the processing system is further configured to cause the second data communication device to maintain the bi-directional wireless data communication link with the first data communication device after the radio frequency circuit transmits the expected transmission.
4. The transmitter device of claim 1, wherein the command message of the control signal received via the bi-directional wireless data communication link is generated in response to a selection of a touch-screen display of the first data communication device.
5. A system for mounting to a vehicle including a user interface element and for controlling a transmitter device configured to send an expected transmission to a garage door opener, the system comprising:
a transceiver;
an interface for receiving a first signal from the user interface element; and
a processor configured to establish a bi-directional data communication link between the transceiver and the transmitter device, wherein the processor is configured to provide the transmitter device with configuration information via the bi-directional data communication link, wherein the configuration information is stored in a memory of the transmitter device, and wherein the configuration information includes at least one of a transmission frequency or a code sequence descriptor for the expected transmission;
wherein the processor is further configured to cause the transceiver to send a second signal to the transmitter device via the bi-directional data communication link in response to receiving the first signal at the interface;
wherein the processor is configured to format the second signal so that the transmitter device will automatically send the expected transmission to the garage door opener without further user interaction, and wherein the expected transmission is generated using the configuration information received via the bi-directional data communication link.
6. The system of claim 5, wherein the user interface element is a push button.
7. The system of claim 5, wherein the user interface element is a touch-screen display.
8. The system of claim 5, wherein the user interface element is an audio input device.
9. The system of claim 5, wherein the processor is further configured to determine if the transceiver and the transmitter device have been paired.
10. The system of claim 5, wherein the processor is further configured to terminate the bi-directional data communication link between the transceiver and the transmitter device.
11. The system of claim 5, wherein the processor is further configured to enable an encryption mode for encrypting communications via the bi-directional data communication link between the transceiver and the transmitter device.
12. A method for configuring a system for mounting in a vehicle to send an expected transmission to a garage door opener located externally the vehicle, the garage door opener configured to change states based upon the receipt of the expected transmission, the system including a transmitter device and a vehicle control system, the method comprising:
receiving a user input signal at an interface of the vehicle control system;
establishing a bi-directional wireless data communication link between the vehicle control system and the transmitter device of the system in response to the user input signal received at the interface of the vehicle control system;
sending a request for configuration information from the transmitter device to the vehicle control system regarding the garage door opener or the expected transmission via the bi-directional wireless data communication link established between the vehicle control system and the transmitter device, wherein the configuration information includes at least one of a transmission frequency or a code sequence descriptor for the expected transmission;
receiving the configuration information via the bi-directional wireless data communication link between the vehicle control system and the transmitter device;
storing the configuration information in a memory of the transmitter device; and
configuring the transmitter device of the system to transmit the expected transmission to the garage door opener in response to receiving a command signal from the vehicle control system without further user interaction, wherein the expected transmission is generated using the configuration information received from the vehicle control system via the bi-directional communication link.
13. The method of claim 12, wherein the configuration information includes one of a device identifier, a code sequence descriptor, and a frequency for transmitting.
14. The method of claim 12, further comprising:
retrieving data for configuring the system to transmit the expected transmission upon demand from a memory unit of the system.
15. The method of claim 12, wherein the configuration information comprises a device identifier, a code sequence descriptor, and a frequency for transmitting.
16. The method of claim 15, further comprising:
storing the configuration information in a memory device.
17. The method of claim 16, wherein the configuring step comprises:
processing the configuration information stored in the memory device to configure a routine for generating the expected transmission.
18. The method of claim 12, further comprising automatically synchronizing a component of the system with a component of the receiving device after the configuring step.
19. The method of claim 12 further comprising:
establishing a second bi-directional wireless data communication link between the vehicle control system and the receiver device based on the user input signal.
20. The method of claim 12, wherein the command signal from the vehicle control system is generated in response to a speech input.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for controlling luminance of a liquid crystal display (LCD) panel comprising a backlight module, comprising the steps of:
(a) receiving an image signal;
(b) generating an image compensation parameter by using the image signal and a plurality of luminance control parameters, wherein each of the luminance control parameters is related to a luminance emitted from the backlight module, a plurality of image luminance signals, and an image luminance value of each of the image luminance signals under the luminance emitted from the backlight module;
(c) generating an image compensation signal corresponding to the image signal by using the image compensation parameter; and
(d) generating a control signal by using the image compensation parameter, so that the backlight module emits a luminance in response to the control signal to display an image represented by the image compensation signal on the LCD panel.
2. The method of claim 1, wherein the step (b) comprises the steps of:
(b1) generating a first compensation coefficient by using a maximal luminance value of the image signal;
(b2) choosing the largest luminance control parameter as a second compensation coefficient; and
(b3) choosing the smaller one from the first compensation coefficient and the second compensation coefficient as the image compensation parameter.
3. The method of claim 1, wherein the step (c) multiplies the image compensation parameter by the image signal to generate the image compensation signal.
4. The method of claim 1, wherein the control signal is a pulse width modulation signal.
5. The method of claim 1, further comprising the steps of:
(e) generating a plurality of testing control signals, so that the backlight module emits a luminance in response to each of the testing control signals respectively;
(f) generating the corresponding image luminance signal in response to each of the testing control signals;
(g) generating a relation in response to each of the testing control signal respectively by measuring a testing luminance value displayed on the LCD panel under the corresponding luminance for each of the corresponding image luminance signals; and
(h) generating the luminance control parameters according to the image luminance signals, the testing luminance values, and the corresponding relations, wherein each of the luminance control parameters corresponds to one of the testing control signals respectively.
6. The method of claim 5, wherein the step (h) comprises the steps of:
(h1) choosing the largest testing control signal as a standard control signal;
(h2) calculating a luminance variation parameter for each of the testing control signals by using the corresponding testing luminance values and the testing luminance values corresponding to the standard control signal;
(h3) calculating a correction value of the LCD panel by using the relations; and
(h4) generating the luminance control parameter for each of the testing control signals by using the corresponding luminance variation parameter and the correction value of the LCD panel.
7. The method of claim 6, wherein each of the relations is a gamma curve and the correction value is a gamma value.
8. An apparatus for controlling luminance of an LCD panel comprising a backlight module, comprising:
a receiving interface for receiving an image signal;
an image compensation module for generating an image compensation parameter by using the image signal and a plurality of luminance control parameters and for generating an image compensation signal corresponding to the image signal by using the image compensation parameter, wherein each of the luminance control parameters is related to a luminance emitted from the backlight module, a plurality of image luminance signals, and an image luminance value of each of the image luminance signals under the luminance emitted from the backlight module;
a control signal generating module for generating a control signal by using the image compensation parameter, so that the backlight module emits a luminance in response to the control signal to display an image represented by the image compensation signal on the LCD panel.
9. The apparatus of claim 8, wherein the control signal generating module is a luminance control signal generator of the backlight module and the control signal is a luminance control signal of the backlight module.
10. The apparatus of claim 9, wherein the luminance control signal generator of the backlight module is a pulse width modulation signal generator and the luminance control signal of the backlight module is a pulse width modulation signal.
11. The apparatus of claim 8, wherein the image compensation module generates a first compensation coefficient by using a maximal luminance value of the image signal, chooses the largest luminance control parameter as a second compensation coefficient, and chooses the smaller one from the first compensation coefficient and the second compensation coefficient as the image compensation parameter.
12. The apparatus of claim 8, wherein the image compensation module multiplies the image compensation parameter by the image signal to generate the image compensation signal.
13. An LCD device, comprising:
an LCD panel, comprising a backlight module;
a receiving interface for receiving an image signal;
an image compensation module for generating an image compensation parameter by using the image signal and a plurality of luminance control parameters and for generating an image compensation signal corresponding to the image signal by using the image compensation parameter, wherein each of the luminance control parameters is related to a luminance emitted from the backlight module, a plurality of image luminance signals, and an image luminance value of each of the image luminance signals under the luminance emitted from the backlight module;
a control signal generating module for generating a control signal by using the image compensation parameter, so that the backlight module emits a luminance in response to the control signal to display an image represented by the image compensation signal on the LCD panel.
14. The LCD device of claim 13, wherein the control signal generating module is a luminance control signal generator of the backlight module and the control signal is a luminance control signal of the backlight module.
15. The liquid display device of claim 14, wherein the luminance control signal generator of the backlight module is a pulse width modulation signal generator and the luminance control signal of the backlight module is a pulse width modulation signal.
16. The liquid display device of claim 13, wherein the image compensation module generates a first compensation coefficient by using a maximal luminance value of the image signal, chooses the largest luminance control parameter as a second compensation coefficient, and chooses the smaller one from the first compensation coefficient and the second compensation coefficient as the image compensation parameter.
17. The liquid display device of claim 13, wherein the image compensation module multiplies the image compensation parameter by the image signal to generate the image compensation signal.