WO1999035853A1 - Video signal reproducing device and hierarchical video signal decoder - Google Patents
Video signal reproducing device and hierarchical video signal decoder Download PDFInfo
- Publication number
- WO1999035853A1 WO1999035853A1 PCT/JP1998/005943 JP9805943W WO9935853A1 WO 1999035853 A1 WO1999035853 A1 WO 1999035853A1 JP 9805943 W JP9805943 W JP 9805943W WO 9935853 A1 WO9935853 A1 WO 9935853A1
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- resolution
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- bit stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
- H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N5/926—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by pulse code modulation
- H04N5/9261—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by pulse code modulation involving data reduction
Definitions
- Video signal playback device and hierarchical video signal decoding device
- the present invention relates to an encoding device and a decoding device using a hierarchical video signal compression system.
- 101 is a transmission data demodulator
- 1201 is a demodulation data selector
- 103 is a first high-efficiency decoder
- 104 is a second high-efficiency decoder
- 105 is a resolution conversion device
- 122 is an adder.
- the first transmission data demodulator 101 demodulates the input transmission data and outputs the demodulated data.
- the first demodulated data selector 1 201 separates and extracts a low-resolution bit stream and a high-resolution bit stream from the demodulated data and outputs each.
- the first high-efficiency decoder 103 performs a first predetermined decoding on the input high-resolution bit stream and outputs the decoded signal.
- the second high-efficiency encoder 104 decodes the input low-resolution bit stream to a second predetermined decoding, and outputs the decoded signal.
- the resolution converter 105 converts the input low-resolution decoded signal to the same resolution as the high-resolution video signal. The converted resolution conversion signal is output.
- the adder 122 adds the output of the first high-efficiency encoder 103 and the output of the resolution converter 105 one pixel at a time, and outputs a high-resolution video signal.
- the conventional hierarchical video signal encoding device and the hierarchical video signal decoding device use coding in accordance with the Spatial Scalable Profile (SSP), which is hierarchical coding in the spatial axis direction standardized by PEG.
- SSP Spatial Scalable Profile
- 2111 is a resolution converter A
- 2112 is a video signal encoder A
- 2113 is a resolution converter B
- 2114 is a video signal encoder (:, 2115 is a bitstream multiplexer.
- the high-resolution video signal is converted to a low-resolution video signal by the resolution converter A2111 and output as a low-resolution video signal.
- the resolution converter B2113 outputs a stream and outputs a low-resolution video decoded signal by decoding the low-resolution video signal bit stream by PEG compression and outputs a low-resolution video decoded signal as an input signal.
- Bitstream multiplexer 2115 outputs a low resolution video signal bit stream and the high resolution video signal bit stream compression coded multiplexed bit stream by multiplexing.
- 2116 is a bit stream separator
- 2117 is a video signal decoder A
- 2118 is a video signal decoder C.
- the bitstream separator 2116 The filter information signal, the low resolution video signal bit stream, and the high resolution video signal bit stream are separated from the compression-encoded multiplex bit stream and output.
- the video signal decoder A2117 decodes the low-resolution video signal bit stream by MPEG compression and outputs a low-resolution decoded video signal.
- the resolution converter B 2113 outputs a resolution conversion signal whose resolution has been converted to the same resolution as the high-resolution video signal using a predetermined approximation formula.
- the video signal coder / decoder C2118 performs decoding by the MPEG SSP compression method and outputs a high-resolution decoded signal. Disclosure of the invention
- the above-described conventional video signal reproducing apparatus can only reproduce a video signal encoded by the hierarchical encoding method, and at the same time, reproduces a video signal encoded by the non-hierarchical encoding method, and can perform adaptive error correction. It was not possible to make any modifications or to reproduce additional information or additional area digital video signals.
- a non-hierarchical encoded video signal can be reproduced, and by using a low-resolution bit stream,
- the above problem can be solved by performing adaptive error correction and adding a function of reproducing additional information and an additional area digital video signal from a predetermined position of reproduction data.
- the resolution conversion of the decoded video signal of the low-resolution video signal to the high- We went according to the formula.
- the resolution-converted signal has distortion due to linear approximation, and this distortion has adversely affected the reproduction quality of the high-resolution video signal.
- the present invention provides an encoding device and a decoding device capable of transmitting information of a predetermined FIR filter to a receiver side, thereby enabling high resolution conversion with high conversion efficiency, and reproducing image quality of a high resolution video signal. Can be improved.
- FIG. 1 is a block diagram of a video signal reproducing device according to the first invention of the present application.
- FIG. 2 is a block diagram of the video signal reproducing device according to the second invention of the present application.
- FIG. 3 is a block diagram of the video signal reproducing device according to the third invention of the present application.
- FIG. 4 is a block diagram of a video signal reproducing device according to a fourth invention of the present application.
- FIG. 5 is a block diagram of a video signal reproducing device according to a fifth invention of the present application.
- FIG. 6 is a block diagram of a video signal reproducing device according to a sixth invention of the present application.
- FIG. 7 is a block diagram of a video signal reproducing device according to a seventh invention of the present application.
- FIG. 8 is a block diagram of the video signal reproducing device according to the eighth invention of the present application.
- FIG. 9 is a block diagram of a video signal reproducing device according to a ninth invention of the present application.
- FIG. 10 is a block diagram of a video signal reproducing apparatus according to the tenth aspect of the present invention.
- FIG. 11 is a block diagram of a video signal reproducing apparatus according to the eleventh invention of the present application.
- FIG. 12 is a block diagram of a hierarchical video signal encoding device according to the present invention.
- FIG. 13 is a block diagram of a hierarchical video signal encoding device according to the thirteenth invention of the present application.
- FIG. 14 is a block diagram of a hierarchical video signal encoding device according to the fourteenth invention of the present application.
- FIG. 15 is a block diagram of the hierarchical video signal encoding device according to the fifteenth invention of the present application.
- FIG. 16 is a block diagram of a hierarchical video signal encoding device according to the sixteenth invention of the present application.
- FIG. 17 is a block diagram of a hierarchical video signal encoding device according to the seventeenth invention of the present application.
- FIG. 18 is a block diagram of a hierarchical video signal decoding device according to the eighteenth aspect of the present invention.
- FIG. 19 is a block diagram of a hierarchical video signal decoding device according to the ninth invention of the present application.
- FIG. 20 is a block diagram of the hierarchical video signal decoding device according to the 20th invention of the present application.
- FIG. 21 is a block diagram of a hierarchical video signal decoding apparatus according to the twenty-first aspect of the present invention.
- FIG. 22 is a block diagram of a hierarchical video signal decoding apparatus according to the second invention of the present application.
- FIG. 23 is a block diagram of a hierarchical video signal decoding device according to the present invention.
- FIG. 24 is a block diagram of a conventional video signal reproducing device.
- FIG. 25 is a block diagram of a conventional hierarchical video signal encoding device.
- FIG. 26 is a block diagram of a conventional hierarchical video signal decoding apparatus.
- FIG. 27 is a block diagram of a video signal recording device corresponding to the video signal reproducing device of the eighth invention of the present application.
- FIG. 28 is a block diagram of a video signal recording device corresponding to the video signal reproducing device of the ninth invention of the present application.
- FIG. 29 is a block diagram of a video signal recording device corresponding to the video signal reproducing device of the tenth invention of the present application.
- FIG. 30 is a block diagram of a video signal recording device corresponding to the video signal reproducing device of the eleventh invention of the present application.
- 101 is a first transmission data demodulator
- 102 is a first demodulated data selector
- 103 is a first high-efficiency decoder
- 104 is a second demodulator.
- 105 is a resolution converter
- 106 is a switch.
- the first transmission data demodulator 101 demodulates the input transmission data and outputs the demodulated data.
- the first demodulated data selector 102 analyzes the header of the demodulated data, and converts the data of the channel to be decoded into a low-resolution bit stream in which the low-resolution video signal is encoded and a high-resolution video signal. And a high-resolution bit stream in which a differential signal between the low-resolution signal and the high-resolution bit stream is multiplexed and modulated, is recorded at a predetermined position in the header of the demodulated data.
- a switch indicating that the low-resolution bit stream and the high-angle bit stream have been separated is output.
- Outputs control signal If the data of the channel to be decoded is only one video signal bit stream, the video signal bit stream is output to the high-resolution bit stream side, and only one video signal bit stream is output.
- a switch control signal indicating that the switch has been performed is output.
- the first high-efficiency decoder 103 performs a first predetermined decoding on the input bit stream, and outputs the decoded signal.
- the second high-efficiency encoder 104 converts the input bit stream into a second predetermined decryption signal and outputs the decrypted signal, and outputs the decrypted signal.
- the resolution converter 105 outputs a resolution-converted signal obtained by converting the input low-resolution decoded signal to the same resolution as the high-resolution video signal (C).
- the switch 106 indicates that the switch control signal has separated the low-resolution bit stream from the high-resolution bit stream, the output (B) of the first high-efficiency encoder 103 and the resolution The output (C) of the converter 105 is added one pixel at a time to output a high-resolution video signal (D). If the multi-control signal indicates that only one video signal bit stream has been output, the output of the first high-efficiency encoder 103 is output as the video signal (A) as it is.
- the first invention of the present application by having the first demodulated data selector 102, can be applied to either a hierarchical compression-encoded video signal, a hierarchical-type video signal, or a compression-encoded video signal. Can be decrypted.
- reference numeral 201 denotes a second demodulated data selector.
- the demodulated data selector 201 analyzes the header of the demodulated data as input, and determines whether the data of the channel to be decoded is a low-resolution bit stream in which the low-resolution video signal is encoded and a high-resolution video signal. Detects that identification data indicating that the differential signal of the low-resolution signal and the encoded high-resolution bitstream are multiplexed and modulated is recorded at a predetermined position in the header of the demodulated data. In this case, the low-resolution bit stream and the high-resolution bit stream are separated and output, and a switch control signal indicating that the low-resolution bit stream and the high-resolution bit stream are separated is output. I do. Also, the data of the channel to be decoded is only one video signal bit stream, and the video signal has a predetermined resolution.
- the demodulated data selector 201 outputs the video signal bit stream to the high-resolution bit stream side. What's on the low-resolution bitstream side And outputs a switch control signal indicating that only one video signal bit stream has been output. If the data of the channel to be decoded is only one video signal bit stream and the video signal is lower than a predetermined resolution, the demodulated data selector 201 selects the video signal bit stream. It outputs a stream to the low-resolution bitstream, outputs nothing to the high-resolution bitstream, and outputs a switch control signal indicating that only one video signal bitstream has been output.
- the first high-efficiency decoder 103 performs a first predetermined decoding on the input bit stream and outputs the decoded signal.
- the second high-efficiency encoder 104 performs a second predetermined decoding on the input bit stream and outputs it, and outputs the decoded signal.
- the resolution converter 105 converts the input low-resolution decrypted signal into a high-resolution signal having the same resolution as the high-resolution signal and outputs it. If the switch 106 indicates that the switch control signal has separated the low-resolution bit stream from the high-resolution bit stream, the output and resolution conversion of the first high-efficiency encoder 103 are performed. If the switch control signal indicates that only one high-resolution bit stream has been output, the first high-efficiency code is output. The output of the modulator 103 is output as it is as a video signal.
- the second demodulated data selector 201 by having the second demodulated data selector 201, it is possible to decode a video signal that has been subjected to hierarchical compression encoding and a video signal that has been subjected to non-hierarchical compression encoding. .
- reference numeral 301 denotes a second transmission data demodulator
- reference numeral 302 denotes a third demodulation data selector.
- the second transmission data demodulator 3101 is configured to convert the reception channel data in the input transmission data into a low-resolution bit stream in which a low-resolution video signal is encoded, a high-resolution video signal, and a low-resolution video signal.
- the third demodulated data selector 302 is set to low if the signal from the second transmitted data demodulator 301 indicates that the low resolution bit stream and the high resolution bit stream are to be separated.
- the image signal bit stream is output to the first high-efficiency decoder 103, and no output is generated to the second high-efficiency decoder 104.
- the first high-efficiency decoder 103 performs a first predetermined decoding on the input bit stream and outputs the decoded signal.
- the second high-efficiency encoder 104 converts the input bit stream into a second predetermined decryption signal, and outputs the decoded signal.
- the resolution converter 105 converts the input low-resolution decoding signal into a high-resolution signal having the same resolution as the high-resolution signal, and outputs the high-resolution signal.
- the switch 106 indicates that the switch control signal has separated the low-resolution bit stream and the high-resolution bit stream, the output of the first high-efficiency encoder 103 and the resolution converter 105 If the switch control signal indicates that only one video signal bit stream has been output, the second high-efficiency encoder 1 is added. The output of 03 is output as a video signal as it is.
- the compressed A decoded video signal can also be decoded.
- reference numeral 402 denotes a fourth demodulated data selector.
- the second transmission data demodulator 301 converts the received channel data in the input transmission data into a low-resolution bit stream in which a low-resolution video signal is encoded.
- the identification data indicating that the stream and the high-resolution bit stream in which the difference signal between the high-resolution video signal and the low-resolution signal has been multiplexed and modulated is transmitted to a predetermined position in the transmission data.
- Output a switch control signal indicating that the low-resolution bit stream and the high-resolution bit stream are to be separated.
- the fourth demodulation data selector 402 selects the low-resolution signal if the signal from the second transmission data demodulator 301 indicates that the low-resolution bit stream and the high-resolution bit stream are separated. Separate the bit stream from the high-resolution bit stream and output each. On the other hand, if the signal from the fourth transmission data demodulator 301 indicates that only one video signal bit stream is to be separated, the video signal bit stream is separated and its header is analyzed. If the video signal is higher than a predetermined resolution (for example, horizontal 720 pixels, vertical 480 lines, frame rate 60 Hz), the video signal bit stream is output to the high resolution bit stream side, Little is output to the resolution bit stream side.
- a predetermined resolution for example, horizontal 720 pixels, vertical 480 lines, frame rate 60 Hz
- the video signal bit stream is output to the low resolution bit stream side, and nothing is output to the high resolution bit stream side.
- the first high-efficiency decoder 103 performs a first predetermined decoding on the input bit stream and outputs the decoded signal.
- the second high-efficiency encoder 104 decodes the input bit stream to a second predetermined decryption and outputs the decrypted bit stream. Output the decoded signal.
- the resolution converter 105 converts the input low-resolution decoded signal into a high-resolution signal having the same resolution as the high-resolution signal, and outputs the high-resolution signal.
- the switch 106 indicates that the switch control signal has separated the low-resolution bit stream and the high-resolution bit stream, the output of the first high-efficiency encoder 103 and the resolution converter 105 If the switch control signal indicates that only one video signal bit stream has been output, the second high-efficiency encoder 1 is added. The output of 03 is output as a video signal as it is.
- the fourth decoded data selector 402 by having the fourth decoded data selector 402, it is possible to decode a video signal which has been subjected to hierarchical compression encoding and a video signal which has been subjected to non-hierarchical compression encoding. Can be.
- 501 is a first high-efficiency decoding device
- 502 is a second switch.
- the first high-efficiency decoder 501 performs a third predetermined decoding on the input high-resolution bitstream and outputs the decoded signal. At the time of this decoding, if the switch control signal indicates that the low-resolution bit stream and the high-resolution bit stream have been separated, if an error is detected in the high-resolution bit stream, the The high-efficiency decoder 501 continues to output an error correction signal until decoding can be performed normally, and also detects an error propagated portion and outputs an error correction signal.
- the second high-efficiency encoder 104 converts the input low-resolution bitstream into a second stream. 2 is output after being decrypted in a predetermined manner, and the decrypted signal is output.
- the resolution converter 105 converts the input low-resolution decoded signal into a high-resolution signal and outputs it.
- the second switch 502 has a two-stage structure of 5021 and 502, and indicates that the switch control signal has separated the low-angle fast-definition bit stream and the high-resolution bit stream. Yes, if no error-modifying signal is output, the output of the first high-efficiency encoder 501 and the output of the resolution converter 105 are added one pixel at a time to output a high-resolution video signal. If the error correction signal is output, the output of the resolution converter 105 is output as it is. If the switch control signal indicates that only one video signal bit stream has been output, the output of the first high efficiency encoder 501 is output as it is as a video signal.
- the fifth invention of the present application has a first high-efficiency decoder 501 and a second switch 502, so that when an error occurs in a high-resolution bit stream, an error location and error
- the propagation point can be modified with a signal obtained by decoding a signal obtained by decoding a low-resolution bit stream.
- reference numeral 61 denotes a fourth high-efficiency decoder.
- the first high-efficiency decoder 6001 decodes the input high-resolution bit stream into a fourth predetermined decryption, and outputs the decrypted signal.
- the switch control signal is converted to a low-resolution bit stream.
- the first high-efficiency decoder 6001 can decode normally if an error is detected in the high-resolution bit stream. Until it can be performed, a signal of a predetermined level (intermediate level of the accuracy of the signal; for example, if the signal is 8-bit precision, 1 2 8) is continuously output. Output a signal.
- the second high-efficiency encoder 104 decodes the input low-resolution bit stream to a second predetermined output, and outputs the decoded signal.
- the resolution converter 105 converts the input low-resolution decrypted signal into a high-resolution signal and outputs it.
- the switch 106 indicates that the switch control signal has separated the low-resolution bit stream and the high-resolution bit stream, the output of the first high-efficiency encoder 601 and the resolution converter 10 6 If the output of (5) is added one pixel at a time to output a high-resolution video signal, and the switch control signal indicates that only one video signal bit stream has been output, the first high efficiency
- the output of the encoder 601 is directly output as a video signal.
- the sixth invention of the present application by having the first high-efficiency decoder 601, when an error occurs in a high-resolution bit stream, an error location and an error propagation location are reduced to a low-angle image resolution. A signal obtained by decoding a bit stream and having its resolution converted can be modified.
- reference numeral 701 denotes a first high efficiency decoder
- reference numeral 702 denotes a second high efficiency decoder
- the first high-efficiency decoder 7001 converts the input high-resolution bit stream 5, and outputs the decoded signal. During this decoding, if the switch control signal indicates that the low-resolution bit stream is separated from the high-resolution bit stream, and if an error is detected in the high-resolution bit stream, the first high efficiency Until the decryption can be performed normally, the second high-efficiency decryptor 7102 outputs a low-resolution bit stream around one error on the screen in the reproduced video signal. It obtains the code information (motion vector, etc.) it has and corrects errors using the coded information.
- the sixth high-efficiency encoder 7202 decodes the input high-resolution bit stream into a sixth predetermined signal, outputs the decoded signal, and outputs the decoded signal. It outputs the coded information necessary for obtaining the coded information from the device 70 1.
- the resolution converter 105 converts the input low-resolution decrypted signal into a high-resolution signal and outputs it.
- the switch control signal indicates that the switch control signal has separated the low-resolution bit stream from the high-resolution bit stream
- the output of the first high-efficiency encoder 701 and the resolution converter 105 If the switch control signal indicates that only one video signal bit stream has been output, the first high-efficiency encoder 7 is added.
- the output of 01 is output as a video signal as it is.
- FIG. 8 reference numeral 801 denotes a recording medium
- 802 denotes a regenerator
- 803 denotes an additional information regenerator
- 804 denotes a high-efficiency decoder
- 805 denotes a video signal regenerator.
- 270 1 is a video signal divider
- 270 2 is an additional information generator
- 270 3 is a video signal converter
- 270 4 is a high-efficiency encoder
- 270 5 Is a data replacer
- 276 is a recorder.
- FIG. 27 shows a video signal recording apparatus for recording a recording medium reproduced by the eighth invention of the present application.
- the video divider 27001 divides the input first digital video signal into a second digital video signal as an effective area and a digital video signal outside the effective area, and outputs a second digital video signal. I do.
- the additional information generator 270 generates additional information data.
- the video signal converter 2703 adds a dummy signal to the second digital video signal and converts the second digital video signal into a third digital video signal.
- the high-efficiency encoder 270 4 generates a compressed data by applying a predetermined high-efficiency encoding to the third digital video signal and outputs the compressed data.
- the data replacement unit 275 replaces the data at the position corresponding to the information of the dummy signal in the compressed data with the additional information data.
- the recording device 276 records the compressed data replaced by the data replacing device 275 on a predetermined recording medium 801.
- the regenerator 802 reproduces the compressed bit stream recorded on the recording medium 801 and performs high-efficiency decoding. And outputs the additional information data recorded at a predetermined position in the compressed bit stream to the additional information reproducer 803.
- the additional information reproducer 803 reproduces and outputs an additional information signal from the additional information data.
- the high-efficiency decoder 804 decodes the compressed bit stream, which is a reverse conversion of a predetermined high-efficiency encoding, and outputs a video signal.
- the video signal reproducer 805 outputs a reproduced video signal in which the video signals output from the high-efficiency decoder 804 are rearranged.
- the reproducer 802 and the additional information reproducer 803 it is possible to reproduce the additional information recorded at a predetermined position in the compressed bit stream.
- FIG. 9 The ninth embodiment of the present invention will be described below with reference to FIGS. 9 and 28.
- reference numeral 901 denotes a reproducer
- reference numeral 902 denotes a video signal adder
- FIG. 28 the same components as those in FIG. 27 will not be described.
- reference numeral 2707 denotes a data replacement unit.
- FIG. 28 shows a video signal recording device for recording a recording medium reproduced by the ninth invention of the present application.
- the video divider 27001 divides the input first digital video signal into a second digital video signal as an effective area and a digital video signal outside the effective area, and outputs a second digital video signal. I do.
- the video signal converter 2703 adds a dummy signal to the second digital video signal and converts it into a third digital video signal.
- the high-efficiency encoder 2704 is the third digital video signal. Is subjected to predetermined high-efficiency encoding to generate and output compressed data.
- the data replacement unit 275 5 converts the data at the position corresponding to the information of the dummy signal in the compressed data into a digital video signal selected from digital video signals other than the effective area in the first digital video signal. Replace with data.
- the recording device 276 records the compressed data replaced by the data replacement device 275 on a predetermined recording medium 801.
- the reproducer 901 reproduces the compressed bit stream recorded on the recording medium 801 and outputs the reproduced signal to the high-efficiency decoder 804, and the recorded information is recorded at a predetermined position in the compressed bit stream. Outputs a digital video signal selected from digital video signals outside the valid area.
- the high-efficiency decoder 804 decodes the compressed bit stream, which is the inverse transform of predetermined high-efficiency coding, and outputs a video signal.
- the video signal reproducer 805 outputs a reproduced video signal obtained by rearranging the video signal output from the high-efficiency decoder 804.
- the video signal adder 902 adds the digital video signal output from the reproducer 901 to a predetermined position of the reproduced video signal output from the video signal reproducer 805, and outputs the reproduced video signal. I do.
- the ninth invention of the present application by having the playback device 91 and the video signal addition device 902, it is possible to reproduce a video signal to which a digital video signal is added at a predetermined position in a compressed bit stream. .
- FIG. 10 that are the same as those in FIG. 8 will not be described.
- 1001 is a high-efficiency decoder.
- FIG. 29 description of the same components as those in FIG. 27 will be omitted.
- reference numeral 2708 denotes a high-efficiency encoder.
- FIG. 29 shows a video signal recording apparatus for recording a recording medium reproduced by the tenth aspect of the present invention.
- the video divider 27001 divides the input first digital video signal into a second digital video signal that is an effective area and a digital video signal outside the effective area, and outputs a second digital video signal. I do.
- the additional information generator 270 generates additional information data.
- the video signal converter 2703 adds a dummy signal to the second digital video signal and converts it into a third digital video signal.
- the high-efficiency encoder 27004 performs the first high-efficiency encoding of the third digital video signal to create and output compressed data.
- the high-efficiency encoder 270 8 encodes the additional information data generated by the attached caro information generator 270 2 into a predetermined second high-efficiency encoding to create and output compressed additional information data.
- the data replacement unit 275 replaces the data at the position corresponding to the information of the dummy signal in the compressed data with the additional information compressed data output from the high efficiency encoder 278.
- the recording device 276 records the compressed data replaced by the data replacement device 275 on a predetermined recording medium 801.
- the reproducer 802 reproduces the compressed bit stream recorded on the recording medium 801 and outputs it to the high-efficiency decoder 804, and adds the data recorded at a predetermined position in the compressed bit stream. Output compressed information data to high-efficiency decoder 1001 Power.
- the high-efficiency decoder 1001 performs decoding, which is the inverse conversion of the second high-efficiency coding, on the additional information compressed data to reproduce and output the additional information signal.
- the high-efficiency decoder 804 decodes the compressed bit stream, which is the inverse transform of the first high-efficiency encoding, and outputs a video signal.
- the video signal reproducer 805 outputs a reproduced video signal in which the video signals output from the high-efficiency decoder 804 are rearranged.
- the high-efficiency decoder 1001 by having the high-efficiency decoder 1001, it is possible to reproduce additional information compressed and recorded by a predetermined compression at a predetermined position in a compressed bit stream. it can.
- FIG. 11 An embodiment of the eleventh invention will be described below with reference to FIGS. 11 and 30.
- FIG. 30 description of the same components as those in FIG. 27 will be omitted.
- reference numeral 2709 denotes a high-efficiency encoder.
- FIG. 11 the same components as those in FIGS. 8 and 9 will not be described.
- 1 1 0 1 is a high-efficiency decoder
- 1 1 0 2 is a video signal added
- FIG. 30 shows a video signal recording device for recording a recording medium reproduced by the eleventh invention of the present application.
- the video divider 27001 divides the input first digital video signal into a second digital video signal that is an effective area and a digital video signal outside the effective area, and outputs a second digital video signal. I do.
- the video signal converter 2703 adds a dummy signal to the second digital video signal and converts it into a third digital video signal.
- the high-efficiency encoder 2704 is the third digital A first high-efficiency encoding of the video signal is performed to create and output compressed data.
- the high-efficiency encoder 2709 encodes digital video signal data selected from digital video signals other than the effective area in the first digital video signal into a predetermined second high-efficiency encoding and performs a second compression. Create and output data.
- the data replacement unit 275 replaces the data at the position corresponding to the information of the dummy signal in the compressed data with the second compressed data output from the high efficiency encoder 278.
- the recording device 276 records the compressed data replaced by the data replacement device 275 on a predetermined recording medium 801.
- the reproducer 901 reproduces the compressed bit stream recorded on the recording medium 801 and outputs it to the high-efficiency decoder 804, and is recorded at a predetermined position in the compressed bit stream.
- the second compressed data is output to the high-efficiency decoder 111.
- the high-efficiency decoder 1101 decodes the second compressed data, which is the inverse transform of the predetermined second high-efficiency coding, and performs digital decoding on the first digital video signal except for the effective area. Plays and outputs the digital video signal selected from the video signals.
- the high-efficiency decoder 804 performs decoding, which is the inverse conversion of the first high-efficiency coding, on the compressed bit stream, and outputs a video signal.
- the video signal reproducer 805 outputs a reproduced video signal in which the video signals output from the high-efficiency decoder 804 are rearranged.
- the video signal adder 902 is a digital video signal selected from digital video signals other than the effective area in the first digital video signal at a predetermined position of the reproduced video signal output from the video signal reproducer 805. Add the signal data to make the playback video signal Output.
- the eleventh invention of the present application has a high-efficiency decoder 1101 and a video signal adder 111, so that it is compressed and recorded at a predetermined position in a compressed bit stream by a predetermined compression.
- the video signal to which the added additional area digital video signal is added can be reproduced.
- 2101 is a resolution converter A
- 2102 is a video signal encoder A
- 2103 is a resolution converter B
- 2104 is a difference unit A
- 2105 is a video signal encoder B
- 2106 is bitstream multiplexing. It is container A.
- the input high-resolution video signal is resolution-converted by the resolution converter A2101 and output as a low-resolution video signal.
- the video signal encoder A2102 outputs a low-resolution video signal bit stream obtained by encoding a low-resolution video signal using a predetermined video signal compression coding scheme A, and decodes the low-resolution video signal bit stream. And outputs a low-resolution video decoded signal.
- the resolution converter B 2103 outputs a resolution-converted decoded signal obtained by converting the low-resolution video decoded signal to the same resolution as the input signal of the high-resolution video signal by using a filter in the vertical and horizontal directions, and At least it outputs a filter information signal containing the number of taps and coefficients of the horizontal filter and the number of taps and coefficients of the vertical filter as information.
- the differentiator 2104 outputs a difference signal that is a difference between each pixel of the high-resolution video signal that is the input signal and the resolution conversion decoded signal that is the output of the resolution converter B 2103.
- the video signal encoder B 2105 calculates the difference Outputs a differential signal bit stream obtained by encoding the signal using the predetermined video signal compression encoding method B.
- the bitstream multiplexer A2106 outputs a compression-encoded multiplexed bitstream multiplexed with the filter information signal, the low-resolution video signal bitstream, and the difference signal bitstream.
- the multiplexing of the filter information signal in the bitstream multiplexer A2106 will be described with an example.
- the video signal compression coding scheme A and the video signal compression coding scheme B are both MPEG standard compression schemes, and both the low-resolution video signal bit stream and the differential signal bit stream have the syntax of the MPEG standard elementary stream.
- the bit stream multiplexer A2106 outputs the compression-coded multiplexed bit stream in conformity with the sparse sta- tus of the transport stream of the MPEG standard, the filter information signal is output as a user-defined stream. It is added to the PMT (Program Map Table), and the filter information signal itself is multiplexed as a single elementary stream into the compression-encoded multiplex bit stream.
- the filter information signal includes not only the number of taps and coefficients of the horizontal filter, the number of taps and coefficients of the vertical filter, but also the ratio of the number of horizontal pixels of the high-resolution video signal to the number of horizontal pixels of the low-resolution video signal, And the ratio of the number of vertical lines of the low-resolution video signal to the number of vertical lines.
- the filter information signal may transmit the same information a plurality of times in consideration of an error during transmission.
- Resolution converter B 2103 converts the convertible phase in the horizontal, vertical, Each can be limited.
- the ratio of the number of horizontal pixels of the high-resolution video signal to the number of horizontal pixels of the low-resolution video signal, which cannot be realized, or the ratio of the number of vertical lines of the high-resolution video signal to the number of vertical lines of the low-resolution video signal, is The resolution conversion of the phase closest to the feasible range can be performed, and the tap number and coefficient of the horizontal filter and the tap number and coefficient of the vertical filter at that time can be used as the filter information signal.
- both the video signal compression coding scheme A and the video signal compression coding scheme B may be MPEG standard compression.
- video signal compression coding method B in video signal encoder B encodes a difference signal from a predicted image in the time axis direction, a high-resolution video signal that is input to generate a predicted image. May be used.
- 2201 is a filter information adder
- 2202 is a bit stream multiplexer B.
- the input high-resolution video signal is resolution-converted by the resolution converter A2101 and output as a low-resolution video signal.
- the video signal encoder A2102 outputs a low-resolution video signal bit stream obtained by encoding a low-resolution video signal using a predetermined video signal compression coding scheme A, and decodes the low-resolution video signal bit stream. And outputs a low-resolution video decoded signal.
- the resolution converter B 2103 outputs a resolution-converted decoded signal obtained by converting the low-resolution video decoded signal to the same resolution as the input signal of the high-resolution video signal by using a filter in the vertical and horizontal directions, and At least, it outputs a filter information signal containing the number of taps and coefficients of the horizontal filter and the number of taps and coefficients of the vertical filter as information.
- the differentiator 2104 outputs a difference signal that is a difference between each pixel of the high-resolution video signal that is the input signal and the resolution conversion decoded signal that is the output of the resolution converter B 2103.
- the video signal encoder B 2105 outputs a differential signal bit stream obtained by encoding the differential signal according to a predetermined video signal compression encoding scheme B.
- the filter information adder 2201 outputs an information-added low-resolution video signal bit stream in which the filter information signal is added as user data to the low-resolution video signal bit stream.
- the bitstream multiplexer B 2202 outputs a compression-encoded multiplexed bitstream multiplexed with the information-added low-resolution video signal bitstream and the difference signal bitstream.
- the filter information adding unit 201 When the video signal compression coding scheme A is a compression scheme of the MPEG standard and the low-resolution video signal bit stream has the syntax of the elementary stream of the MPEG standard, the filter information adding unit 201 generates the filter information.
- the signal is added as user data in the sequence header in the low-resolution video signal bit stream using ESC (ExtensionStartcode) and UDSC (UserDataStartCode).
- the filter information signal includes not only the number of taps and coefficients of the horizontal filter, the number of taps and coefficients of the vertical filter, but also the ratio of the number of horizontal pixels of the high-resolution video signal to the number of horizontal pixels of the low-resolution video signal, And the ratio of the number of vertical lines of the low-resolution video signal to the number of vertical lines. Further, by forming the filter information signal into a table, only the number indicating the contents of the table may be transmitted. The filter information signal may transmit the same information a plurality of times in consideration of an error during transmission.
- the phase that can be converted in the resolution conversion of the resolution converter B 2103 can be limited in each of the horizontal and vertical directions.
- the ratio of the number of horizontal pixels of the high-resolution video signal to the number of horizontal pixels of the low-resolution video signal, which cannot be realized, or the ratio of the number of vertical lines of the high-resolution video signal to the number of vertical lines of the low-resolution video signal is as follows: The resolution conversion of the phase closest to the feasible range is performed, and the tap number and coefficient of the horizontal filter and the tap number and coefficient of the vertical filter at that time can be used as the filter information signal.
- both the video signal compression coding scheme A and the video signal compression coding scheme B may be MPEG standard compression.
- video signal compression coding method B in video signal encoder B encodes a difference signal from a predicted image in the time axis direction, a high-resolution video signal that is input to generate a predicted image. May be used.
- the input high-resolution video signal is resolution-converted by the resolution converter A2101 and output as a low-resolution video signal.
- the video signal encoder A2102 outputs a low-resolution video signal bit stream obtained by encoding a low-resolution video signal using a predetermined video signal compression coding scheme A, and decodes the low-resolution video signal bit stream. And outputs a low-resolution video decoded signal.
- the resolution converter B 2103 converts the low-resolution video decoded signal to the high-resolution Output a resolution-converted decoded signal whose resolution has been converted using horizontal and vertical filters at the same resolution as the video signal, and at least the number of taps and coefficients of the horizontal filter and the number of taps and coefficients of the vertical filter as information. Outputs the included filter information signal.
- the differentiator 2104 outputs a difference signal that is a pixel-by-pixel difference between the high resolution video signal that is the input signal and the resolution conversion decoded signal that is output from the resolution converter B 103.
- the video signal encoder B 2105 outputs a differential signal bit stream obtained by encoding the differential signal by a predetermined video signal compression encoding scheme B.
- the filter information adder 2201 outputs an information-added difference signal bit stream obtained by adding the filter information signal as user data to the difference signal bit stream.
- the bitstream multiplexer B 2202 outputs a compression-encoded multiplexed bitstream multiplexed with the low-resolution video signal bitstream and the information-added difference signal bitstream.
- the filter information adding unit 2201 The filter information signal is added as user data by using ESC (ExtensionStartcode) and UDSC (UserDataStartCode) in the sequence header in the low-resolution video signal bit stream.
- ESC ExtensionStartcode
- UDSC UserDataStartCode
- the filter information signal includes not only the number of taps and coefficients of the horizontal filter, the number of taps and coefficients of the vertical filter, but also the ratio of the number of horizontal pixels of the high-resolution video signal to the number of horizontal pixels of the low-resolution video signal, Vertical lines and low resolution video It may include the ratio of the number of vertical lines of the signal.
- the filter information signal into a table, only the number indicating the contents of the table may be transmitted. The same information can be transmitted multiple times in consideration of errors during transmission.
- the phase that can be converted in the resolution conversion of the resolution converter B 2103 can be limited in each of the horizontal and vertical directions.
- the ratio of the number of horizontal pixels of the high-resolution video signal to the number of horizontal pixels of the low-resolution video signal, which cannot be realized, or the ratio of the number of vertical lines of the high-resolution video signal to the number of vertical lines of the low-resolution video signal is as follows:
- the resolution conversion of the phase closest to the feasible range can be performed, and the tap number and coefficient of the horizontal filter and the tap number and coefficient of the vertical filter at that time can be used as the filter information signal.
- both the video signal compression coding scheme A and the video signal compression coding scheme B may be MPEG standard compression.
- video signal compression coding method B in video signal encoder B encodes a difference signal from a predicted image in the time axis direction, a high-resolution video signal that is input to generate a predicted image. May be used.
- reference numeral 2401 denotes a video signal encoder C.
- the input high-resolution video signal is converted in resolution by the resolution converter A2101 and output as a low-resolution video signal.
- the video signal encoder A2102 outputs a low-resolution video signal bit stream obtained by encoding the low-resolution video signal using a predetermined video signal compression coding method A, and decodes the low-resolution video signal bit stream to reduce the low-resolution video signal bit stream.
- Resolution video decoding signal Output a signal.
- the resolution converter B 2103 outputs a resolution-converted decoded signal obtained by converting the low-resolution video decoded signal to the same resolution as the input signal of the high-resolution video signal using horizontal and vertical filters to convert the resolution, and A filter information signal including the number of taps and coefficients of the filter and the number of taps and coefficient of the vertical filter as information is output.
- the video signal encoder C 2401 encodes the input high-resolution video signal according to a predetermined video signal compression coding scheme C using a predicted image.
- a predicted image is generated, a temporally predicted image is generated from a decoded image of the already encoded high-resolution video signal, and a video signal of at least one pixel is generated using the spatially predicted image and the temporally predicted image.
- the bitstream multiplexer A2106 outputs a compression-encoded multiplexed bitstream obtained by multiplexing the filter information signal, the low-resolution video signal bitstream, and the high-resolution video signal bitstream.
- the multiplexing of the filter information signal in the bit stream multiplexer 2202 will be described with an example.
- Both the video signal compression coding method A and the video signal compression coding method C are compression methods of the MPEG standard, and both the low-resolution video signal bit stream and differential signal bit stream use the syntax of the MPEG standard elementary stream.
- the bitstream multiplexer A106 outputs the compression-encoded multiplexed bitstream as compliant with the MPEG standard transport stream syntax.
- the filter information signal is added to the PMT (Program Map Table) as a user-defined stream, and the filter information signal itself is multiplexed as a single elementary stream into the compression coded bit stream.
- the filter information signal includes not only the number of taps and coefficients of the horizontal filter and the number of taps and coefficients of the vertical filter, but also the ratio of the number of horizontal pixels of the high-resolution video signal to the number of horizontal pixels of the low-resolution video signal, And the ratio of the number of vertical lines of the low-resolution video signal to the number of vertical lines.
- the filter information signal may transmit the same information a plurality of times in consideration of an error during transmission.
- the phase that can be converted in the resolution conversion of the resolution converter B 2103 can be limited in each of the horizontal and vertical directions.
- the ratio of the number of horizontal pixels of the high-resolution video signal to the number of horizontal pixels of the low-resolution video signal, which cannot be realized, or the ratio of the number of vertical lines of the high-resolution video signal to the number of vertical lines of the low-resolution video signal is as follows:
- the resolution conversion of the phase closest to the feasible range can be performed, and the tap number and coefficient of the horizontal filter and the tap number and coefficient of the vertical filter at that time can be used as the filter information signal.
- both the video signal compression coding scheme A and the video signal compression coding scheme C may be MPEG standard compression.
- the video signal compression coding method C in the video signal encoder C may be MPEG2 Spatial Scalable Profile compression, or the predicted image is an intermediate value in the bit precision per pixel (Example: When the bit precision is 8 bits) It may be 1 2 8).
- the input high-resolution video signal is resolution-converted by the resolution converter A2101 and output as a low-resolution video signal.
- the video signal encoder A2102 outputs a low-resolution video signal bit stream obtained by encoding a low-resolution video signal using a predetermined video signal compression coding scheme A, and decodes the low-resolution video signal bit stream. And outputs a low-resolution video decoded signal.
- the resolution converter B 2103 outputs a resolution-converted decoded signal obtained by converting the low-resolution video decoded signal to the same resolution as the input signal of the high-resolution video signal using a filter in the vertical and horizontal directions, and Both output a filter information signal containing the number of taps and coefficients of the horizontal filter and the number of taps and coefficients of the vertical filter as information.
- the video signal encoder C 2401 encodes the input high-angle, high-definition video signal using a predetermined video signal compression coding method C using a predicted image, and the predicted image is a resolution-converted decoded signal.
- the filter information adder 2201 outputs an information-added low-resolution video signal bit stream in which the filter information signal is added as user data in the low-resolution video signal bit stream.
- the bitstream multiplexer B 2202 outputs a compression-encoded multiplexed bitstream obtained by multiplexing the information-added low-resolution video signal bitstream and the high-resolution video signal bitstream.
- a compression-encoded multiplexed bitstream obtained by multiplexing the information-added low-resolution video signal bitstream and the high-resolution video signal bitstream.
- the filter information adding unit 201 sends the filter information The signal is added as user data in the sequence header in the resolution video signal bit stream using ESC (ExtensionStartcode) and UDSC (UserDataStartCode).
- the filter information signal includes not only the number of taps and coefficients of the horizontal filter, the number of taps and coefficients of the vertical filter, but also the ratio of the number of horizontal pixels of the high-resolution video signal to the number of horizontal pixels of the low-resolution video signal, And the ratio of the number of vertical lines of the low-resolution video signal to the number of vertical lines.
- the same information may be transmitted multiple times in consideration of errors during transmission.
- the phase that can be converted in the resolution conversion of the resolution converter B 2103 can be limited in each of the horizontal and vertical directions.
- the ratio of the number of horizontal pixels of the high-resolution video signal to the number of horizontal pixels of the low-resolution video signal, which cannot be realized, or the ratio of the number of vertical lines of the high-resolution video signal to the number of vertical lines of the low-resolution video signal is as follows:
- the resolution conversion of the phase closest to the feasible range can be performed, and the tap number and coefficient of the horizontal filter and the tap number and coefficient of the vertical filter at that time can be used as the filter information signal.
- both the video signal compression coding scheme A and the video signal compression coding scheme C are MP EG standard compression may be used.
- the video signal compression coding method C in the video signal encoder C may be MPEG2 Spatial Scalable Profile compression, or the predicted image may be an intermediate value in bit precision per pixel (eg, when the bit precision is 8 bits). 1 2 8).
- the input high-resolution video signal is resolution-converted by the resolution converter A2101 and output as a low-resolution video signal.
- the video signal encoder A2102 outputs a low-resolution video signal bitstream obtained by encoding a low-resolution video signal using a predetermined video signal compression coding scheme A, and decodes the low-resolution video signal bitstream. And outputs a low-resolution video decoded signal.
- the resolution converter B2103 outputs a resolution-converted decoded signal obtained by converting the low-resolution video decoded signal to the same resolution as the input signal of the high-resolution video signal by using a filter in the vertical and horizontal directions, and at least.
- a filter information signal including the number of taps and coefficients of the horizontal filter and the number of taps and coefficients of the vertical filter as information is output.
- the video signal encoder C2401 encodes the input high-resolution video signal using a predetermined video signal compression coding method C using a predicted image. Generate a directional predicted image, generate a temporally predicted image from a decoded image of a high-resolution video signal that has already been encoded, and use the spatially predicted image and the temporally predicted image to generate an image of at least one pixel.
- a high-resolution video signal bit stream in which a predicted image is generated for each coding unit including a signal, and a differential signal between the input high-resolution video signal and the predicted image is compression-coded using the video signal compression coding method C Is output.
- the filter information adder 2201 outputs an information-added high-resolution video signal bitstream in which a filter information signal is added as user data in a high-resolution video signal bit stream.
- the bitstream multiplexer B 2202 outputs a compression-encoded multiplexed bitstream obtained by multiplexing the low-resolution video signal bitstream and the information-added high-resolution video signal bitstream.
- the filter information adding unit 2201 filters The information signal is added as user data in the sequence header in the low-resolution video signal bit stream using ESC (ExtensionStartcode) and UDSC (UserDataStartCode).
- ESC ExtensionStartcode
- UDSC UserDataStartCode
- the filter information signal includes not only the number of taps and coefficients of the horizontal filter, the number of taps and coefficients of the vertical filter, but also the ratio of the number of horizontal pixels of the high-resolution video signal to the number of horizontal pixels of the low-resolution video signal, And the ratio of the number of vertical lines of the low-resolution video signal to the number of vertical lines.
- the filter information signal into a table, only the number indicating the contents of the table may be transmitted.
- the same information may be transmitted a plurality of times in consideration of an error during transmission.
- the phase that can be converted in the resolution conversion of the resolution converter B 2103 can be limited in each of the horizontal and vertical directions.
- the ratio of the number of horizontal pixels of the high-resolution video signal to the number of horizontal pixels of the low-resolution video signal, or the ratio of the number of vertical lines of the high-resolution video signal to the number of vertical lines of the low-resolution video signal, which cannot be realized is Can convert the resolution of the closest phase within the achievable range, and use the tap number and coefficient of the horizontal filter and the tap number and coefficient of the vertical filter at that time as the filter information signal.
- both the video signal compression coding scheme A and the video signal compression coding scheme C may be MPEG standard compression.
- the video signal compression coding method C in the video signal encoder C may be MPEG2 Spatial Scalable Profile compression, or the predicted image may be an intermediate value in bit precision per pixel (eg, 1 bit when the bit precision is 8 bits). 2 8).
- reference numeral 2701 denotes a bit stream separator A
- 2702 denotes a video signal decoder A
- 703 denotes a video signal decoder B
- 2104 denotes a resolution converter B
- 2705 denotes an adder.
- the bitstream separator A2701 separates the filter information signal, the low-resolution video signal bitstream, and the difference signal bitstream from the compression-encoded multiplexed bitstream, and outputs the separated signal stream.
- the video signal decoder A2702 outputs a low-resolution decoded video signal obtained by decoding the low-resolution video signal bit stream by performing the inverse of the predetermined video signal compression method A.
- the video signal decoder B2703 outputs a differential decoded signal obtained by decoding the differential signal bit stream by performing the inverse of the predetermined video signal compression method B.
- the resolution converter B 2704 uses a horizontal filter and a vertical filter obtained from the filter information signal to convert the resolution to the same resolution as the differential decoded signal. Output a signal.
- the adder 2705 generates a high-resolution decoded video signal by taking the sum of the difference decoded signal and the resolution conversion signal for each pixel.
- the video signal compression coding scheme A and the video signal compression coding scheme B are both MPEG-standard compression schemes, and both the low-resolution video signal bitstream and the differential signal bitstream are MPEG elementary stream synths.
- the filter information signal is converted to a PMT (program map) as a user-defined stream.
- PMT program map
- the filter information signal includes not only the number of taps and coefficients of the horizontal filter, the number of taps and coefficients of the vertical filter, but also the ratio of the number of horizontal pixels of the high-resolution video signal to the number of horizontal pixels of the low-resolution video signal, And the ratio of the number of vertical lines of the low-resolution video signal to the number of vertical lines.
- the resolution conversion signal may be generated with the phase closest to the phase.
- the filter information signal is tabulated, the filter information signal is obtained from the table indicated by the received number, the number of taps and coefficient of the horizontal filter, the number of taps and coefficient of the vertical filter, the horizontal pixel of the high-resolution video signal.
- the ratio between the number of horizontal pixels of the low-resolution video signal and the ratio of the number of vertical lines of the high-resolution video signal to the number of vertical lines of the low-resolution video signal may be obtained.
- both the video signal compression coding scheme A and the video signal compression coding scheme B may be MPEG standard compression.
- reference numeral 2801 denotes a bit stream separator B
- 2802 denotes a filter information separator.
- the bit stream separator B 2801 separates and outputs the information-added low-resolution video signal bit stream and the difference signal bit stream from the compression-encoded multiplex bit stream.
- the filter information separator 2802 separates the information-added low-resolution video signal bit stream into a filter information signal and a low-resolution video signal bit stream and outputs them.
- the video signal decoder A2702 outputs a low-resolution decoded video signal obtained by decoding the low-resolution video signal bit stream by performing the inverse of the predetermined video signal compression method A.
- the video signal decoder B 2703 outputs a differential decoded signal obtained by decoding the differential signal bit stream by performing the inverse of the predetermined video signal compression method B.
- the resolution converter B 2704 outputs a resolution conversion signal whose resolution has been converted to the same resolution as the difference decoded signal using the horizontal filter and the vertical filter obtained from the filter information signal.
- An adder 2705 generates a high-resolution decoded video signal by taking the sum of the difference decoded signal and the resolution conversion signal for each pixel.
- an example of separation of the filter information signal in the filter information separator 2802 will be described.
- the filter information signal is converted to the user data.
- ESC ExtensionStartcode
- UDSC UserDataStartCode
- the filter information signal is extracted from the sequence header in the filter information separation 2802.
- the low-resolution video signal bit stream output in this case may be the information-added low-resolution video signal bit stream.
- the filter information signal includes not only the number of taps and coefficients of the horizontal filter and the number of taps and coefficients of the vertical filter, but also the ratio of the number of horizontal pixels of the high-resolution video signal to the number of horizontal pixels of the low-resolution video signal, And the ratio of the number of vertical lines of the low-resolution video signal to the number of vertical lines.
- the resolution converter B 2704 the ratio between the number of taps and coefficients of the horizontal filter in the input filter information signal, the number of horizontal pixels of the high-resolution video signal and the number of horizontal pixels of the low-resolution video signal, and If the ideal phase obtained from the ratio of the number of taps and coefficients of the filter and the number of vertical lines of the high-resolution video signal to the number of vertical lines of the low-resolution video signal exceeds the processing capacity of the resolution converter B 704, Alternatively, the resolution conversion signal may be generated at the closest phase within the processing power.
- the filter information signal is obtained from the table indicated by the received number, the number of taps and coefficient of the horizontal filter, the number of taps and coefficient of the vertical filter, the horizontal pixel of the high-resolution video signal.
- Number and low resolution The ratio of the number of horizontal pixels of the video signal and the ratio of the number of vertical lines of the high-resolution video signal to the number of vertical lines of the low-resolution video signal may be obtained.
- both the video signal compression coding method A and the video signal compression coding method B are compressed according to the MPEG standard.
- the bit stream separator B 2801 separates the low-resolution video signal bit stream and the information-added difference signal bit stream from the compression-encoded multiplexed bit stream and outputs the result.
- the filter information separator 2802 separates the information-added differential signal bit stream into a filter information signal and a differential signal bit stream, and outputs them.
- the video signal decoder A2702 outputs a low-resolution decoded video signal obtained by decoding the low-resolution video signal bit stream by performing the inverse of the predetermined video signal compression method A.
- the video signal decoder B 2703 outputs a difference decoded signal obtained by decoding the difference signal bit stream by performing a predetermined inverse video signal compression method B.
- the resolution converter B 2704 outputs a resolution conversion signal obtained by performing resolution conversion to the same resolution as the differential decoded signal using a horizontal filter and a vertical filter obtained from the filter information signal.
- the adder 2705 generates a high-resolution decoded video signal by taking the sum of the difference decoded signal and the resolution conversion signal for each pixel.
- Video signal compression coding method B is a compression method of the PEG standard, and the difference signal bit ESC If stream that has the syntax of the elementary Tallis bird Ichimu the MPEG standards, the filter information signal as user data difference signal bitstream]) 'to down 1 Gunsu in-arm in header (ExtensionStartcode) and UDSC (UserDataStartCode), the filter information signal is extracted from the sequence header and output independently at the filter information separation 2802 in the filter information separation 2802, and the differential signal bit stream output in this case May be left as an information-added difference signal bitstream.
- ExtensionStartcode ExtensionStartcode
- UDSC UserDataStartCode
- the filter information signal includes not only the number of taps and coefficients of the horizontal filter and the number of taps and coefficients of the vertical filter, but also the ratio of the number of horizontal pixels of the high-resolution video signal to the number of horizontal pixels of the low-resolution video signal, And the ratio of the number of vertical lines of the low-resolution video signal to the number of vertical lines.
- the horizontal filter of the input filter information signal is used.
- the resolution conversion signal may be generated at the closest V and phase within the processing capability.
- the filter information signal is obtained from the table indicated by the received number, the number of taps and coefficient of the horizontal filter, the number of taps and coefficient of the vertical filter, and the number of horizontal pixels of the high-resolution video signal.
- the ratio of the number of horizontal pixels of the low-resolution video signal to the ratio of the number of vertical lines of the high-resolution video signal to the ratio of the number of vertical lines of the low-resolution video signal may be obtained.
- both the video signal compression coding scheme A and the video signal compression coding scheme B may be compression according to the PEG standard.
- reference numeral 2901 denotes a video signal decoder C.
- the bit stream separator A2701 separates a filter information signal, a low-resolution video signal bit stream, and a high-resolution video signal bit stream from the compression-encoded multiplexed bit stream, and outputs the separated signal.
- the video signal decoder A2702 outputs a low-resolution decoded video signal obtained by decoding the low-resolution video signal bit stream by performing the inverse of the predetermined video signal compression method A.
- the resolution converter B 2704 outputs a resolution converted signal obtained by converting the resolution to the same resolution as the high resolution video signal using a horizontal filter and a vertical filter obtained from the filter information signal.
- the video signal codec C2901 uses the resolution-converted signal and the already decoded high-resolution video signal to decode the high-resolution video signal bitstream by performing the inverse of the predetermined video signal compression method C. Outputs high-resolution decoded signal.
- the video signal compression coding scheme A and the video signal compression coding scheme B are both MPEG standard compression schemes, and both the low-resolution video signal bitstream and the differential signal bitstream use the syntax of the MPEG standard elementary stream. Outputs the compression-encoded multiplexed bit stream as compliant with the MPEG standard transport stream syntax.
- the filter information signal is added to the PMT (Program Map Table) as a user-defined stream, and the filter information signal itself is multiplexed as a single elementary stream in the compression-coded multiplexed bit stream. Then, the filter information signal is separated as one elementary stream.
- PMT Program Map Table
- the filter information ⁇ H is not only the number of taps and coefficients of the horizontal filter and the number of taps and coefficients of the vertical filter, but also the ratio of the number of horizontal pixels of the high-resolution video signal to the number of horizontal pixels of the low-resolution video signal. It may include the ratio of the number of vertical lines of the resolution video signal to the number of vertical lines of the low resolution video signal.
- the resolution converter B 2704 the ratio between the number of taps and coefficients of the horizontal filter in the input filter information signal, the number of horizontal pixels of the high-resolution video signal and the number of horizontal pixels of the low-resolution video signal, and If the ideal phase obtained from the ratio of the number of taps and coefficients of the filter and the number of vertical lines of the high-resolution video signal to the number of vertical lines of the low-resolution video signal exceeds the processing capacity of the resolution converter B2704,
- the resolution conversion signal may be generated at the closest level and phase within the processing capacity.
- the filter information signal indicates that the number of taps and coefficients of the horizontal filter, the number of taps and coefficients of the vertical filter, and the horizontal
- the ratio of the number of pixels to the number of horizontal pixels of the low-resolution video signal and the ratio of the number of vertical lines of the high-resolution video signal to the number of vertical lines of the low-resolution video signal may be obtained.
- both the video signal compression coding scheme A and the video signal compression coding scheme C may be MPEG standard compression.
- Video signal compression and encoding method C in video signal encoder C may be compression of MPEG2 Spatial Scalable Profile, and the predicted image is one pixel Intermediate value per bit precision (eg 1 if bit precision is 8 bits)
- the bit stream separator B 2801 separates and outputs the information-added low-resolution video signal bit stream and the high-resolution video signal bit stream from the compression-encoded multiplexed bit stream.
- the filter information separator 2802 separates the information-added low-resolution video signal bit stream into a filter information signal and a low-resolution video signal bit stream and outputs them.
- the video signal decoder A2702 outputs a low-resolution decoded video signal obtained by decoding the low-resolution video signal bit stream by performing the inverse of the predetermined video signal compression method A.
- the resolution converter B 2704 outputs a resolution conversion signal obtained by converting the resolution to the same resolution as that of the high-resolution video signal using a horizontal filter and a vertical filter obtained from the filter information signal.
- the video signal codec C2901 decodes the high-resolution video signal bit stream using the resolution conversion signal and the already decoded high-resolution video signal by performing the inverse of the predetermined video signal compression method C. Output the resolution decoded signal.
- the filter information signal is used as user data.
- ESC ExtensionStartcode
- UDSC UserDataStartCode
- the filter information signal is extracted from the sequence header and output independently in the filter information separation 2802, and the low-resolution video signal bit stream output in this case is The additional low-resolution video signal bit stream may be left as it is.
- the filter information signal includes not only the number of taps and coefficients of the horizontal filter, the number of taps and coefficients of the vertical filter, but also the ratio of the number of horizontal pixels of the high-resolution video signal to the number of horizontal pixels of the low-resolution video signal, And the ratio of the number of vertical lines of the low-resolution video signal to the number of vertical lines.
- the resolution converter B 2704 the ratio between the number of taps and coefficients of the horizontal filter in the input filter information signal, the number of horizontal pixels of the high-resolution video signal and the number of horizontal pixels of the low-resolution video signal, and If the ideal phase obtained from the ratio of the number of taps and coefficients of the filter and the number of vertical lines of the high-resolution video signal to the number of vertical lines of the low-resolution video signal exceeds the processing capacity of the resolution converter B 2704,
- the resolution conversion signal may be generated at the closest phase within the processing capacity.
- the filter information signal is obtained from the table indicated by the received number, the tap number and coefficient of the horizontal filter, the tap number and coefficient of the vertical filter, and the horizontal pixel of the high-resolution video signal.
- the ratio between the number of horizontal pixels of the low-resolution video signal and the ratio of the number of vertical lines of the high-resolution video signal to the number of vertical lines of the low-resolution video signal may be obtained.
- both the video signal compression coding scheme A and the video signal compression coding scheme C may be MPEG standard compression.
- the video signal compression coding method C in the video signal encoder C may be compression of the MPEG2 Spatial Scalable Profile, and the prediction image has a bit precision per pixel. May be an intermediate value (eg, 128 when the bit precision is 8 bits).
- the bit stream separator B 2801 separates the low-resolution video signal bit stream and the information-added high-resolution video signal bit stream from the compression-encoded multiplexed bit stream and outputs them.
- the filter information separator 2802 separates the information-added high-resolution video signal bit stream into a filter information signal and a high-resolution video signal bit stream and outputs them.
- the video signal decoder A2702 outputs a low-resolution decoded video signal obtained by decoding the low-resolution video signal bit stream by performing the inverse of the predetermined video signal compression method A.
- the resolution converter B 2704 outputs a resolution conversion signal whose resolution has been converted to the same resolution as the high-resolution video signal using a horizontal filter and a vertical filter obtained from the filter information signal.
- the video signal codec C 2901 uses the resolution-converted signal and the already decoded high-resolution video signal to decode the high-resolution video signal bitstream by performing the inverse of the specified video signal compression method C. Output the decoded high-resolution decoded signal.
- the filter information signal is transmitted to the user data. Is added to the sequence header in the high-resolution video signal bit stream using ESC (ExtensionStartcode) and UDSC (UserDataStartCode).
- ESC ExtensionStartcode
- UDSC UserDataStartCode
- the filter information signal is extracted from the sequence header and output independently, and the high-resolution video signal bit stream output in this case is the information-added high-resolution video signal bit stream. It may be as it is.
- the filter information signal includes not only the number of taps and coefficients of the horizontal filter, the number of taps and coefficients of the vertical filter, but also the ratio of the number of horizontal pixels of the high-resolution video signal to the number of horizontal pixels of the low-resolution video signal, And the ratio of the number of vertical lines of the low-resolution video signal to the number of vertical lines.
- the resolution converter B 2704 the ratio between the number of taps and coefficients of the horizontal filter in the input filter information signal, the number of horizontal pixels of the high-resolution video signal and the number of horizontal pixels of the low-resolution video signal, and If the ideal phase obtained from the ratio of the number of taps and coefficients of the filter and the number of vertical lines of the high-resolution video signal to the number of vertical lines of the low-resolution video signal exceeds the processing capacity of the resolution converter B 2704,
- the resolution conversion signal may be generated at the closest phase within the processing capacity.
- the filter information signal is obtained from the table indicated by the received number, the number of taps and coefficient of the horizontal filter, the number of taps and coefficient of the vertical filter, and the number of horizontal pixels of the high-resolution video signal.
- the ratio of the number of horizontal pixels of the low-resolution video signal to the ratio of the number of vertical lines of the high-resolution video signal to the ratio of the number of vertical lines of the low-resolution video signal may be obtained.
- both the video signal compression coding scheme A and the video signal compression coding scheme C may be MPEG standard compression.
- the video signal compression coding method C in the video signal encoder C may be compression of the MPEG2 Spatial Scalable Profile, and the prediction image has a bit precision per pixel. It may be an intermediate value (eg, 128 when the bit precision is 8 bits).
- ADVANTAGE OF THE INVENTION can reproduce
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Television Systems (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98961587A EP0966162A1 (en) | 1998-01-08 | 1998-12-25 | Video signal reproducing device and hierarchical video signal decoder |
KR1019997008152A KR20000076064A (ko) | 1998-01-08 | 1998-12-25 | 영상신호 재생장치와 계층형 영상신호 복호화장치 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP200998 | 1998-01-08 | ||
JP10/2009 | 1998-01-08 | ||
JP10/138804 | 1998-05-20 | ||
JP13880498A JPH11331613A (ja) | 1998-05-20 | 1998-05-20 | 階層型映像信号符号化装置と階層型映像信号復号化装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999035853A1 true WO1999035853A1 (en) | 1999-07-15 |
Family
ID=26335320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/005943 WO1999035853A1 (en) | 1998-01-08 | 1998-12-25 | Video signal reproducing device and hierarchical video signal decoder |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0966162A1 (ja) |
KR (1) | KR20000076064A (ja) |
CN (1) | CN1249882A (ja) |
WO (1) | WO1999035853A1 (ja) |
Cited By (1)
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US7359618B2 (en) * | 2001-09-13 | 2008-04-15 | Sony Corporation | Information recording/reproducing apparatus and information recording/reproducing method |
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US8229983B2 (en) | 2005-09-27 | 2012-07-24 | Qualcomm Incorporated | Channel switch frame |
KR100746005B1 (ko) * | 2005-10-17 | 2007-08-06 | 삼성전자주식회사 | 다중 목적의 비디오 스트림을 처리하는 장치 및 방법 |
KR100825504B1 (ko) * | 2005-11-23 | 2008-04-25 | 오성진 | 카메라를 이용한 인터페이스 장치 및 방법 |
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US7885471B2 (en) | 2006-07-10 | 2011-02-08 | Sharp Laboratories Of America, Inc. | Methods and systems for maintenance and use of coded block pattern information |
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US7840078B2 (en) | 2006-07-10 | 2010-11-23 | Sharp Laboratories Of America, Inc. | Methods and systems for image processing control based on adjacent block characteristics |
US8422548B2 (en) | 2006-07-10 | 2013-04-16 | Sharp Laboratories Of America, Inc. | Methods and systems for transform selection and management |
AU2007319261B2 (en) | 2006-11-14 | 2010-12-16 | Qualcomm Incorporated | Systems and methods for channel switching |
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US7826673B2 (en) | 2007-01-23 | 2010-11-02 | Sharp Laboratories Of America, Inc. | Methods and systems for inter-layer image prediction with color-conversion |
US8233536B2 (en) | 2007-01-23 | 2012-07-31 | Sharp Laboratories Of America, Inc. | Methods and systems for multiplication-free inter-layer image prediction |
US8665942B2 (en) | 2007-01-23 | 2014-03-04 | Sharp Laboratories Of America, Inc. | Methods and systems for inter-layer image prediction signaling |
US7760949B2 (en) | 2007-02-08 | 2010-07-20 | Sharp Laboratories Of America, Inc. | Methods and systems for coding multiple dynamic range images |
US8767834B2 (en) | 2007-03-09 | 2014-07-01 | Sharp Laboratories Of America, Inc. | Methods and systems for scalable-to-non-scalable bit-stream rewriting |
JP5358931B2 (ja) * | 2007-11-28 | 2013-12-04 | ソニー株式会社 | 送信装置及び受信装置 |
CN108781291B (zh) * | 2016-01-25 | 2022-03-22 | 皇家Kpn公司 | 空间可缩放视频编码 |
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- 1998-12-25 WO PCT/JP1998/005943 patent/WO1999035853A1/ja not_active Application Discontinuation
- 1998-12-25 CN CN98803177A patent/CN1249882A/zh active Pending
- 1998-12-25 EP EP98961587A patent/EP0966162A1/en not_active Withdrawn
- 1998-12-25 KR KR1019997008152A patent/KR20000076064A/ko not_active Application Discontinuation
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JPH05227515A (ja) * | 1992-02-10 | 1993-09-03 | Fujitsu Ltd | 画像の階層的符号化/復号化装置 |
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Also Published As
Publication number | Publication date |
---|---|
EP0966162A1 (en) | 1999-12-22 |
CN1249882A (zh) | 2000-04-05 |
KR20000076064A (ko) | 2000-12-26 |
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