Source: http://www.google.com/patents/US7253566?dq=6721967
Timestamp: 2017-01-21 18:09:47
Document Index: 695925145

Matched Legal Cases: ['§ 120', '§ 119', '§ 120', '§ 120', 'ART 1602', 'ART 1602']

Patent US7253566 - Methods and apparatus for controlling devices in a networked lighting system - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsMethods and apparatus for computer-based control of light sources in a networked lighting system. In one example, a plurality of LED-based lighting systems are arranged as computer controllable “light strings.” Applications contemplated for such light strings include, but are not limited to, decorative...http://www.google.com/patents/US7253566?utm_source=gb-gplus-sharePatent US7253566 - Methods and apparatus for controlling devices in a networked lighting systemAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS7253566 B2Publication typeGrantApplication numberUS 10/842,257Publication dateAug 7, 2007Filing dateMay 10, 2004Priority dateAug 26, 1997Fee statusPaidAlso published asUS6777891, US20030057886, US20040240890Publication number10842257, 842257, US 7253566 B2, US 7253566B2, US-B2-7253566, US7253566 B2, US7253566B2InventorsIhor A. Lys, Frederick M. MorganOriginal AssigneeColor Kinetics IncorporatedExport CitationBiBTeX, EndNote, RefManPatent Citations (103), Referenced by (184), Classifications (18), Legal Events (6) External Links: USPTO, USPTO Assignment, EspacenetMethods and apparatus for controlling devices in a networked lighting system
US 7253566 B2Abstract
Methods and apparatus for computer-based control of light sources in a networked lighting system. In one example, a plurality of LED-based lighting systems are arranged as computer controllable “light strings.” Applications contemplated for such light strings include, but are not limited to, decorative and entertainment-oriented lighting applications (e.g., Christmas tree lights, display lights, theme park lighting, video and other game arcade lighting, etc.). Via computer control, one or more such light strings may provide a variety of complex temporal and color-changing lighting effects. In one example, lighting data is communicated in a given light string in a serial manner, according to a variety of different data transmission and processing schemes. In another example, individual lighting systems of a light string are coupled together via a variety of different conduit configurations to provide for easy coupling and arrangement of multiple light sources constituting the light string. In yet another example, small LED-based lighting systems capable of being arranged in a light string configuration are manufactured as integrated circuits including data processing circuitry and control circuitry for LED light sources, and are packaged along with LEDs for convenient coupling to a conduit to connect multiple lighting systems.
This applications claims the benefit under 35 U.S.C. § 120 as a divisional application of U.S. Non-provisional application Ser. No. 10/158,579, filed May 30, 2002 U.S. Pat. No. 6,777,891, entitled “Methods and Apparatus for Controlling Devices in a Networked Lighting System, which in turn claims the benefit under 35 U.S.C. § 119(e) of the following U.S. Provisional Applications:
Ser. No. 10/158,579 also claims the benefit under 35 U.S.C. § 120 as a continuation-in-part (CIP) of U.S. Non-provisional application Ser. No. 09/971,367, filed Oct. 4, 2001 U.S. Pat. No. 6,788,011, entitled “Multicolored LED Lighting Method and Apparatus,” which is a continuation of U.S. Non-provisional application Ser. No. 09/669,121, filed Sep. 25, 2000 U.S. Pat. No. 6,806,659, entitled “Multicolored LED Lighting Method and Apparatus,” which is a continuation of U.S. Ser. No. 09/425,770, filed Oct. 22, 1999, now U.S. Pat. No. 6,150,774, which is a continuation of U.S. Ser. No. 08/920,156, filed Aug. 26, 1997, now U.S. Pat. No. 6,016,038.
Ser. No. 10/158,579 also claims the benefit under 35 U.S.C. § 120 as a continuation-in-part (CIP) of the following U.S. Non-provisional Applications:
Ser. No. 09/870,193, filed May 30, 2001 U.S. Pat. No. 6,608,453, entitled “Methods and Apparatus for Controlling Devices in a Networked Lighting System;”
Ser. No. 09/215,624, filed Dec. 17, 1998 U.S. Pat. No. 6,528,954, entitled “Smart Light Bulb,” which in turn claims the benefit of the following U.S. Provisional Applications:
Ser. No. 09/213,189, filed Dec. 17, 1998 U.S. Pat. No. 6,459,919, entitled “Precision Illumination;”
Ser. No. 09/213,581, filed Dec. 17, 1998 U.S. Pat. No. 7,038,398, entitled “Kinetic Illumination;”
Ser. No. 09/213,540, filed Dec. 17, 1998 U.S. Pat. No. 6,720,745, entitled “Data Delivery Track;”
Ser. No. 09/333,739, filed Jun. 15, 1999, entitled “Diffuse Illumination Systems and Methods;” and
Ser. No. 09/815,418, filed Mar. 22, 2001 U.S. Pat. No. 6,577,080, entitled “Lighting Entertainment System,” which is a continuation of U.S. Ser. No. 09/213,548, filed Dec. 17, 1998, now U.S. Pat. No. 6,166,496.
The present invention relates to lighting systems, and more particularly, to methods and apparatus for computer-based control of various light sources that may be coupled together to form a networked lighting system.
Light emitting diodes (LEDs) are semiconductor-based light sources often employed in low-power instrumentation and appliance applications for indication purposes. LEDs conventionally are available in a variety of colors (e.g., red, green, yellow, blue, white), based on the types of materials used in their fabrication. This color variety of LEDs recently has been exploited to create novel LED-based light sources having sufficient light output for new space-illumination applications. For example, as discussed in U.S. Pat. No. 6,016,038, multiple differently colored LEDs may be combined in a lighting fixture, wherein the intensity of the LEDs of each different color is independently varied to produce a number of different hues. In one example of such an apparatus, red, green, and blue LEDs are used in combination to produce literally hundreds of different hues from a single lighting fixture. Additionally, the relative intensities of the red, green, and blue LEDs may be computer controlled, thereby providing a programmable multi-color light source. Such LED-based light sources have been employed in a variety of lighting applications in which variable color lighting effects are desired.
FIG. 1 is a diagram showing a networked lighting system according to one embodiment of the invention.
The present invention is directed generally to networked lighting systems, and to various methods and apparatus for computer-based control of various light sources and other devices that may be coupled together to form a networked lighting system.
For example, in one embodiment, a plurality of LED-based lighting systems are arranged as computer controllable “light strings.” Applications contemplated for such light strings include, but are not limited to, decorative and entertainment-oriented lighting applications (e.g., Christmas tree lights, display lights, theme park lighting, video and other game arcade lighting, etc.). Via computer control, one or more such light strings may provide a variety of complex temporal and color-changing lighting effects. In one aspect of this embodiment, lighting data is communicated in a given light string in a serial manner, according to a variety of different data transmission and processing schemes. In another aspect, individual lighting systems of a light string are coupled together via a variety of different conduit configurations to provide for easy coupling and arrangement of multiple light sources constituting the light string. In yet another aspect, small LED-based lighting systems capable of being arranged in a light string configuration are manufactured as integrated circuits including data processing circuitry and control circuitry for LED light sources, and are packaged along with LEDs for convenient coupling to a conduit to connect multiple lighting systems.
In another embodiment of the invention, conventional light sources are employed in combination with LED-based (e.g., variable color) light sources to realize enhanced lighting effects. For example, in one embodiment, one or more computer-controllable (e.g., microprocessor-based) light sources conventionally used in various space-illumination applications and LED-based light sources are combined in a single fixture (hereinafter, a “combined” fixture), wherein the conventional light sources and the LED-based sources may be controlled independently. In another embodiment, dedicated computer-controllable light fixtures including conventional space-illumination light sources and LED-based light fixtures, as well as combined fixtures, may be distributed throughout a space and coupled together as a network to facilitate computer control of the fixtures.
In sum, a lighting system controller according to one embodiment of the invention may include one or more independently controllable output ports to provide control signals to light sources or other devices, based on data received by the controller. The controller output ports are independently controllable in that each controller receiving data on a network selectively responds to and appropriately routes particular portions of the data intended for that controller's output ports. In one aspect of this embodiment, a lighting system controller also may include one or more independently identifiable input ports to receive output signals from various sensors (e.g., light sensors, sound or pressure sensors, heat sensors, motion sensors); the input ports are independently identifiable in that the information obtained from these ports may be encoded by the controller as particularly identifiable data on the network. In yet another aspect, the controller is “independently addressable,” in that the controller may receive data intended for multiple controllers coupled to the network, but selectively exchanges data with (i.e., receives data from and/or transmits data to) the network based on the one or more input and/or output ports it supports.
In different embodiments based on the system of FIG. 1, various data protocols and addressing schemes may be employed in networked lighting systems according to the invention. For example, according to one embodiment, particular controller and/or controller output and input port addresses may be manually pre-assigned to each controller on the network 24 1 (e.g., stored in nonvolatile memory of the controller). Alternatively, the system may be “self-configuring” in that the processor 22 may query (i.e., “ping”) for the existence of controllers coupled to the network 24 1, and assign addresses to controllers once their existence is verified. In these embodiments, a variety of addressing schemes and data protocols may be employed, including conventional Internet addressing schemes and data protocols. The foregoing concepts also may be applied to the embodiment of a networked lighting system shown in FIG. 3, discussed in greater detail below.
In this embodiment, as in one aspect of the system of FIG. 1 discussed above, once each controller is assigned a particular address or range of addresses, each controller may be programmed to receive and re-transmit all of the data initially transmitted by the processor 22 on the data link 28A; stated differently, in one aspect of this embodiment, once each controller is assigned an address, the sequence of data transmitted by the processor 22 is not constrained by the particular topology (i.e., position in the series connection) of the controllers that form the network 24 2. Additionally, each controller does not need to be programmed to appropriately index into a data sequence to extract data from, or place data into, the sequence. Rather, data corresponding to particular input and output ports of one or more controllers may be formatted with an “address header” that specifies a particular controller, and a particular input or output port of the controller.
In another embodiment, a given lighting system 102 may receive data coded with a code, wherein pulses of less than ½ of a pulse period correspond to a first logical state, while pulses of more than ½ of a pulse period correspond to a second logical state. System 102 may then compare the lengths of incoming pulse width with some fraction of the pulse period to determine if the transmitted bit was of the first or second logical state. At least one advantage of this type of bit stream over RS-232, or other protocols, is that system 102 may utilize an internal un-calibrated frequency reference, and a set of counters, registers, and logic gates to extract the data. Additional counters, registers and logic can be utilized to generate the output data stream, and to create drive signals for the LEDs. Another advantage of this system is that it may be integrated onto a very small, very easy to manufacture custom integrated circuit.
Similarly, in another aspect of this embodiment as shown in FIG. 11, which illustrates one exemplary circuit implementation 1600 of a controller 26, bits desired to be transmitted from a UART 1602 may be utilized to create a serial stream which may then be received by another controller. The same latched period value, as previously described, may be utilized to create a second trigger value for a second equality detector 1512 (shown in FIG. 10). In various aspects, the trigger value may be ¼ for a zero bit or ¾ for a one bit, for example. These trigger values may be generated using a single N-bit adder. The input to the adder may be ¼ of the period, and ½ of the period value. Both of these component values require no actual logic to determine, and gating the ½ period value with the state of the bit to be transmitted results in the output of the adder being either ¼ of the period, or ¾ of the period. The second equality detector 1512 shown in FIG. 10 then triggers at the appropriate time to generate the falling edge of the output serial stream. Since the rising edge may simply be rising edge of the input serial stream, both the rising and falling edge triggers are thus available, and a Set-Reset flip flop 1514 may be used as shown in FIG. 10 to merge the signals into an output serial stream. In order to reduce delay in the RISE signal, in one embodiment, a second AND gate 1518 may be used as shown in FIG. 10 to bypass the first flip-flop of the rising edge detector.
As stated previously, in connection with FIG. 11, the clock and data bits may be used to drive a UART 1602 to extract data words. One such word may be reserved as a “start code” to allow synchronization of data segments. As illustrated in FIG. 11, a state machine 1604, either implemented in software or in hardware, may then be used to distribute the received words to PWM generators 1608A, 1608B and 1608C, and to control the content of the transmitted data. In one embodiment, the state machine 1604 causes a start code to be sent when either start codes or the each of the first three subsequent words are received. This action causes the data stream to change as it passes from unit to unit, the number of start codes increasing, and the number of data bytes decreasing. Multiple start codes in succession may be ignored. The number of data bits per word may be changed by changing the widths of all of the component latches and UART registers. In a preferred embodiment an M of 8 bits is used.
Another embodiment of the present invention is directed to a controller 26 or IC that is adapted to handle variations in power. Applicants have recognized and appreciated various problems associated with delivering adequate power to the controller, IC and/or illumination components when many such systems are strung together. In one embodiment, a plurality of illumination systems may be associated with each other in a “string.” The string may become long, relative to a power supplies capability of supplying constant power to the entire string. For example, a string may be long enough that the power transmission lines, along with the illumination systems drawing power from the transmission lines, cause the power to drop significantly as the lines get longer. In one aspect of this embodiment, the IC, or other system controlling the illumination source, may be adapted with a power management circuit wherein the power management circuit is adapted to receive power from a power source, control the power from the power source and deliver adequate power to another circuit in the integrated circuit. Depending on the system needs, the power management circuit may be adapted to deliver adequate power when the power delivered to the power management system varies by a significant amount. For example, the power management circuit may be adapted to deliver adequate power when the power delivered varies by up to 90%. In an embodiment, the power management circuit may be adapted to handle relatively small increases in the supply voltage but capable of supplying adequate power over large negative variations in the delivered power. This may be so arranged, for example, to accommodate for the anticipated voltage drop as the string gets longer while not compensating for large swings in supply voltage on the positive side.
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SOLID-STATE LIGHTING SOLUTIONS, INC;REEL/FRAME:039428/0310Effective date: 20131220RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services