PATENT CLAIM ANALYSIS

Application Number: 15933844
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-07
Patent Classification: ["375", "240030"]

Abstract:
The present invention provides a video encoder and a method of operating the video encoder to implement high-precision bit rate control by reducing the risk of overflow of an intermediate buffer coupled between a quantizer and an encoding section. The intermediate buffer supplies a selection control signal indicative of whether the amount of stored data is large or small to a selector. If the selection control signal indicates large, the selector outputs an estimated code amount from a code amount estimation section to the rate controller. If the selection control signal indicates small, the selector outputs an actual code amount from the encoding section to the rate controller. The rate controller calculates the quantization scale according to the output of the selector and feedbacks the calculated quantization scale to the quantizer. The quantizer adjusts the quantizer scale.

Claim (Index 32):
A method of operating a video encoder having a frequency converter, a quantizer, an encoding section, an intermediate buffer, a code amount estimation section, a code amount selector, and a rate controller, the method comprising the steps of:\n causing the frequency converter to perform a frequency conversion process on an input signal; causing the quantizer to perform a quantization process on the result of the frequency conversion process performed by the frequency converter; causing the encoding section to generate a compressed video bit stream by allowing the encoding section to perform an encoding process on the result of the quantization process performed by the quantizer; coupling the intermediate buffer between the output terminal of the quantizer and the input terminal of the encoding section in order to absorb a difference between a processing speed of the quantizer and a processing speed of the encoding section; coupling the input terminal of the code amount estimation section to the output terminal of the quantizer; causing an estimated code amount, which is generated from the output terminal of the code amount estimation section, to be supplied to a first input terminal of the code amount selector; causing an actual code amount of the compressed video bit stream, which is encoded by the encoding section, to be supplied to a second input terminal of the code amount selector; causing a determination signal indicative of whether the amount of data stored in the intermediate buffer is large or small to be supplied to a selection control terminal of the code amount selector; coupling the output terminal of the code amount selector to the input terminal of the rate controller, an output signal of the rate controller being used to adjust the quantization scale of the quantizer; if the determination signal indicates that the amount of data stored in the intermediate buffer is large, causing the estimated code amount from the code amount estimation section, which is supplied to the first input terminal of the code amount selector, to be output to the output terminal of the code amount selector, the estimated code amount then being used to adjust the quantization scale of the quantizer; and if the determination signal indicates that the amount of data stored in the intermediate buffer is small, causing the actual code amount from the encoding section, which is supplied to the second input terminal of the code amount selector, to be output to the output terminal of the code amount selector, the actual code amount then being used to adjust the quantization scale of the quantizer.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 90.0
- Lexical Diversity: 2.33871
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14505369', '13244751', '12354647', '11900224', '12199605']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4757442775454634
- 35 USC 102 Novelty (BERT): 0.6072685918815434
- Combined Prediction Score: 0.4888967089790714
- Mean Citation Score: 312.15487799999994
- Max Citation Score: 537.8463
- Similarity Product: 498.4659234135927

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test