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US5479209A Expired / Lapsed US ⏱️ 0.0 years remaining

Preprocessor for moving picture encoding

Assignee: NEC Corp
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Filing: 1994-05-11
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Granted: 1995-12-26
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Expires: 2014-05-11
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Abstract

Abstract A preprocessor for re-ordering of pictures in a group of pictures to be encoded by ISO/IEC Recommendation CD11172-2 system, is provided. The preprocessor has a picture type decision unit and a delay amount decision unit to meet the flexibility of the recommended system.

Inventors

  • 👤 Takashi Miyazaki

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 09:15
CPC Classifications
H; H04; H04N; H04N19/00; H04N19/85

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 321 words
A preprocessor for moving picture encoding, comprising: a picture type decision unit for generating picture type (PTYP) signals and start of a group of picture (GST) signals from reset signals (RST) and picture input signals (IN) provided from a moving picture source; a delay amount decision unit for determining a delay amount based on the GST and PTYP signals delivered from said picture type decision unit; and a picture information output unit for delivering information of each picture with a respective time delay determined by said delay amount decision unit, wherein said picture information output unit includes a predetermined number of selector/register sets each including a selector having a first and second input and a register, cascaded in tandem, in which an output of a selector in a set is connected to an input of a register in the set, an output of the register in the set is connected to the first input of a selector in a succeeding set, and a picture information signal PINFO of a picture from said moving picture source is connected in parallel to the second input of each selector in the selector/register sets, a blank signal being connected to the first input of a selector in a first stage of the selector/register sets, and an output of a register in a last stage of the selector/register sets being connected directly to another register, means for controlling said selectors of said selector/register sets in which a logic "H" level voltage at a control signal input terminal of a selector connects signal PINFO to the output of the selector, and a logic "L" level voltage at said control signal input terminal of said selector connects an output of a preceding register to said output of said selector, and a decoder for generating said logic "H" level voltage at a control terminal of a selector based on said delay amount decided by said delay amount decision unit.
Claim 2
Dependent Claim 321 words
A preprocessor for moving picture encoding, comprising: a picture type decision unit for generating picture type (PTYP) signals and start of a group of picture (GST) signals from reset signals (RST) and picture input signals (IN) provided from a moving picture source; a delay amount decision unit for determining a delay amount based on the GST and PTYP signals delivered from said picture type decision unit; and a picture information output unit for delivering information of each picture with a respective time delay determined by said delay amount decision unit, wherein said picture information output unit includes a predetermined number of selector/register sets each including a selector having a first and second input and a register, cascaded in tandem, in which an output of a selector in a set is connected to an input of a register in the set, an output of the register in the set is connected to the first input of a selector in a succeeding set, and a picture information signal PINFO of a picture from said moving picture source is connected in parallel to the second input of each selector in the selector/register sets, a blank signal being connected to the first input of a selector in a first stage of the selector/register sets, and an output of a register in a last stage of the selector/register sets being connected directly to another register, means for controlling said selectors of said selector/register sets in which a logic "H" level voltage at a control signal input terminal of a selector connects signal PINFO to the output of the selector, and a logic "L" level voltage at said control signal input terminal of said selector connects an output of a preceding register to said output of said selector, and a decoder for generating said logic "H" level voltage at a control terminal of a selector based on said delay amount decided by said delay amount decision unit.
Claim 3
Dependent Claim 16 words
A preprocessor for moving picture encoding of claim 1, wherein said registers are FIFO(first-in-first-out) type registers.
Claim 4
Dependent Claim 203 words
A preprocessor for moving picture encoding, comprising: a picture type decision unit for generating picture type (PTYP) signals and start of a group of picture (GST) signals from reset signals (RST) and picture input signals (IN) provided from a moving picture source; a delay amount decision unit for determining a delay amount based on the GST and PTYP signals delivered from said picture type decision unit; and a picture information output unit for delivering information of each picture with a respective time delay determined by said delay amount decision unit, wherein said picture type decision unit includes a counter of modulo N set equal to a total number of pictures in a group of pictures which is an object of re-ordering, said counter being reset by a signal RST from said moving picture source and a count of said counter being increased by 1 at each signal IN from said moving picture source; a start picture decision unit for generating said signal GST when said reset signal RST is received or when the count of said counter comes to zero; and a GOP (group of pictures) pattern table from which said PTYP signal is read out, addressed by the count of said counter.
Claim 5
Dependent Claim 203 words
A preprocessor for moving picture encoding, comprising: a picture type decision unit for generating picture type (PTYP) signals and start of a group of picture (GST) signals from reset signals (RST) and picture input signals (IN) provided from a moving picture source; a delay amount decision unit for determining a delay amount based on the GST and PTYP signals delivered from said picture type decision unit; and a picture information output unit for delivering information of each picture with a respective time delay determined by said delay amount decision unit, wherein said picture type decision unit includes a counter of modulo N set equal to a total number of pictures in a group of pictures which is an object of re-ordering, said counter being reset by a signal RST from said moving picture source and a count of said counter being increased by 1 at each signal IN from said moving picture source; a start picture decision unit for generating said signal GST when said reset signal RST is received or when the count of said counter comes to zero; and a GOP (group of pictures) pattern table from which said PTYP signal is read out, addressed by the count of said counter.
Claim 6
Dependent Claim 19 words
A preprocessor for moving picture encoding of claim 3, wherein said GOP pattern table is stored in a ROM.
Claim 7
Dependent Claim 154 words
A preprocessor for moving picture encoding, comprising: a picture type decision unit for generating picture type (PTYP) signals and start of a group of picture (GST) signals from reset signals (RST) and picture input signals (IN) provided from a moving picture source; a delay amount decision unit for determining a delay amount based on the GST and PTYP signals delivered from said picture type decision unit; and a picture information output unit for delivering information of each picture with a respective time delay determined by said delay amount decision unit, wherein said delay amount decision unit includes a delay amount determination unit for generating a delay amount selector control signal SL from a GST signal and a PTYP signal; and a selector for selecting one of three kinds of delays 1, M+1, M+2 as a delay amount in accordance with said signal SL, where M is a natural number determined as a system parameter.
Claim 8
Dependent Claim 154 words
A preprocessor for moving picture encoding, comprising: a picture type decision unit for generating picture type (PTYP) signals and start of a group of picture (GST) signals from reset signals (RST) and picture input signals (IN) provided from a moving picture source; a delay amount decision unit for determining a delay amount based on the GST and PTYP signals delivered from said picture type decision unit; and a picture information output unit for delivering information of each picture with a respective time delay determined by said delay amount decision unit, wherein said delay amount decision unit includes a delay amount determination unit for generating a delay amount selector control signal SL from a GST signal and a PTYP signal; and a selector for selecting one of three kinds of delays 1, M+1, M+2 as a delay amount in accordance with said signal SL, where M is a natural number determined as a system parameter.
Claim 9
Dependent Claim 240 words
A preprocessor for moving picture encoding comprising: a picture type decision unit for deciding picture types(PTYP) and start of a group of pictures(GST) by reset signals(RST) and picture input signals(IN) from a moving picture source; a delay amount decision unit for deciding delay amount by GST and PTYP signals delivered from said picture type decision unit; a predetermined number of sets of a selector and a register cascaded in tandem, in which output of a selector is connected to input of a register in a same set, output of a register is connected to one input of a selector in a succeeding set, and picture information signal PINFO of a picture from said moving picture source is connected in parallel to another input of all the selectors, signal 0(blank) being connected to said one input of a selector in a first stage, and output of a register in a last stage being connected directly to another register; means for controlling said selectors in which logic "H" level voltage at a control signal input terminal of a selector connects signal PINFO to the output of the selector, and logic "L" level voltage at said control signal input terminal of said selector connects output of a preceding register to said output of said selector; a decoder for generating said logic "H" level voltage at a control terminal of a selector determined by said delay amount decided by said delay amount decision unit.
Claim 10
Dependent Claim 240 words
A preprocessor for moving picture encoding comprising: a picture type decision unit for deciding picture types(PTYP) and start of a group of pictures(GST) by reset signals(RST) and picture input signals(IN) from a moving picture source; a delay amount decision unit for deciding delay amount by GST and PTYP signals delivered from said picture type decision unit; a predetermined number of sets of a selector and a register cascaded in tandem, in which output of a selector is connected to input of a register in a same set, output of a register is connected to one input of a selector in a succeeding set, and picture information signal PINFO of a picture from said moving picture source is connected in parallel to another input of all the selectors, signal 0(blank) being connected to said one input of a selector in a first stage, and output of a register in a last stage being connected directly to another register; means for controlling said selectors in which logic "H" level voltage at a control signal input terminal of a selector connects signal PINFO to the output of the selector, and logic "L" level voltage at said control signal input terminal of said selector connects output of a preceding register to said output of said selector; a decoder for generating said logic "H" level voltage at a control terminal of a selector determined by said delay amount decided by said delay amount decision unit.

References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1998-12-25 1999-06-26 1999-12-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2002-12-25 2003-06-26 2003-12-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2006-12-25 2007-06-26 2007-12-26 $7700.00 Window Closed / Lapsed

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