U8008681 164B2
`
`(12) United States Patent
`Owen et al.
`
`(10) Patent No.:
`
`(45) Date of Patent:
`
`US 8,681,164 B2
`*Mar. 25, 2014
`
`(54) ELECTRONIC SYSTEM AND METHOD FOR
`SELECTIVELY ALLOWING ACCESS TO A
`SHARED MEMORY
`
`(56)
`
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`(71) Appliczmt: STMicroelectronics, Inc.. Coppell. TX
`(US)
`
`(72)
`
`Inventors: Jefferson Eugene Owen. Fremont. CA
`(US): Raul Zegers Diaz. Palo Alto. CA
`(US); Osvaldo Colavin. Tucker. GA
`(US)
`
`(73) Assignee: STMicroelectronics, Inc.. Coppell. TX
`(US)
`
`( * ) Notice:
`
`Subject to any disclaimer. the term oftlu's
`patent is extended or adjusted under 35
`U.S.C. 154(1)) by 0 days.
`
`This patent is subject to a terminal dis-
`claimer.
`
`(2]) Appl. No.: 13/655,152
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`Prior Publication Data
`US 2013/0042072 A1
`Feb. 14.2013
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`Related U.S. Application Data
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`(63) Continuation of application No. 13/239200. filed on
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`(Continued)
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`(5])
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`lnt.(.‘l.
`6061‘" 13/18
`60617 15/167
`(52) US. Cl.
`USPC ........................................... 345/535: 345/541
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`(2006.01)
`(2006.01)
`
`(58) Field of Classification Search
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`.......................... 345/541. 535. 542. 547. 555
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`4.257.095 A
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`(Cont inued)
`
`Primarjv Examiner 7 Hall Nguyen
`(74) Attornet‘, Agent. or Firm — Seed IP Law Group PLLC
`
`(57)
`
`ABSTRACT
`
`An electronic system. an integrated circuit and a method for
`display are disclosed. The electronic system contains a first
`device. a memory and a video/audio compressiom'dccom-
`pression device such as a decoderfencoder. The electronic
`system is configured to allow the first device and the video/
`audio compression/decompression device to share the
`memory. The electronic system may be included in a com-
`puter in which case the memory is a main memory. Memory
`access is accomplished by one or more memory interfaces.
`direct coupling oi'the memory to a bus. or direct coupling of
`the first device and decoder/encoder to a bus. An arbiter
`
`selectively provides access for the first device and/or the
`decoder/encoder to the memory based on priority. 'lhe arbiter
`may be monolithically integrated into a memory interface.
`The decoder may be a video decoder configured to comply
`with the MPEG-2 standard. ’lhe memory may store predicted
`images obtained from a preceding image.
`
`17 Claims. 6 Drawing Sheets
`
`
`
`Page 1 of 19
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`HTC-LG-SAMSUNG EXHIBIT 1015
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`US 8,681,164 B2
` Page 2
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`(63)
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`Related US. Application Data
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`continuation of application \o. 13/015,385, filed on
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`contmuation of application \o. 12/857,455, filed on
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`continuation of application \o. 12/424,389, filed on
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`Apr. 15, 2009, now Pat. No. 7,777,753, which is a
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