1. A stream generation apparatus that generates a stream including coded pictures, the coded pictures including a first unit of storage in which first information obtained by coding a command for managing a buffer that holds a decoded picture as a reference picture is stored, and a second unit of storage which is located before the first unit of storage and for storing second information, and when a coded picture stores the second information obtained by coding content identical to the command indicated by the first information of another coded picture which is located before the coded picture in decoding order, the first unit of storage, the second unit of storage, and the command are defined according to the MPEG-4 AVC standard, stream generation apparatus comprising:
a judging unit configured to judge whether or not a first coded picture in which the first information is stored in the first unit of storage is a coded picture corresponding to a reference B picture to be referable to when another picture is decoded;
a coding unit configured to code, as the second information, content identical to the command indicated by the first information, when the judgment unit judges that the first coded picture is a coded picture corresponding to the reference B picture to be referable to when the other picture is decoded; and
a generating unit configured to generate a stream by storing the second information in the second unit of storage in a second coded picture which corresponds to an I picture which is located after the first coded picture in decoding order, or a P picture.
2. A stream generation method of generating a stream including coded pictures, the coded pictures including a first unit of storage in which first information obtained by coding a command for managing a buffer that holds a decoded picture as a reference picture is stored, and a second unit of storage which is located before the first unit of storage and for storing second information, and when a coded picture stores the second information obtained by coding content identical to the command indicated by the first information of another coded picture which is located before the coded picture in decoding order, the first unit of storage, the second unit of storage, and the command are defined according to the MPEG-4 AVC standard, the stream generation method comprising:
judging whether or not a first coded picture in which the first information is stored in the first unit of storage is a coded picture corresponding to a reference B picture to be referable to when another picture is decoded;
coding, as the second information, content identical to the command indicated by the first information, when the judging judges that the first coded picture is a coded picture corresponding to the reference B picture to be referable to when the other picture is decoded; and
generating a stream by storing the second information in the second unit of storage in a second coded picture which corresponds to an I picture which is located after the first coded picture in decoding order, or a P picture.
3. A non-transitory computer-readable storage medium on which a stream including coded pictures is recorded, the coded pictures including a first unit of storage in which first information obtained by coding a command for managing a buffer that holds a decoded picture as a reference picture is stored, and a second unit of storage which is located before the first unit of storage and for storing second information, and
when a coded picture stores the second information obtained by coding content identical to the command indicated by the first information of another coded picture which is located before the coded picture in decoding order,
in the case where the first information is stored in the first unit of storage of a first coded picture and where the first coded picture is a coded picture corresponding to a reference B picture to be referable to when another picture is decoded,
the second information is stored in the second unit of storage of I picture or P picture which is located after the first coded picture in decoding order, the second information being identical to the first information in the first coded picture, and
the first unit of storage, the second unit of storage, and the command are defined according to the MPEG-4 AVC standard.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A variable frequency converter operating in a variable frequency mode, comprising:
a power stage circuit module and a variable frequency signal stage circuit module which are connected with each other to form a closed-loop circuit system; wherein the variable frequency converter further comprises an adjusting unit outputting a continuous interfering signal and loading the continuous interfering signal into the variable frequency signal stage circuit module so as to cause an operating frequency of the power stage circuit module controlled by the variable frequency signal stage circuit module to change continuously.
2. The variable frequency converter according to claim 1, wherein the adjusting unit is a jitter signal generator outputting the continuous interfering signal to the variable frequency signal stage circuit module.
3. The variable frequency converter according to claim 2, wherein the variable frequency signal stage circuit module comprises a detection stage circuit detecting the power stage circuit module, and a control stage circuit receiving a signal outputted by the detection stage circuit and outputting a signal to the power stage circuit module, the signal outputted by the jitter signal generator is loaded into the detection stage circuit.
4. The variable frequency converter according to claim 3, wherein the detection stage circuit comprises an input detection stage circuit and an output detection stage circuit, the signal outputted by the jitter signal generator is loaded into the input detection stage circuit so as to cause the output signal of the input detection stage circuit or the signal of the input detection stage circuit transferred to the control stage circuit to jitter continuously.
5. The variable frequency converter according to claim 3, wherein the detection stage circuit comprises an input detection stage circuit and an output detection stage circuit, the signal outputted by the jitter signal generator is loaded into the output detection stage circuit so as to cause the output signal of the output detection stage circuit or the signal of the output detection stage circuit transferred to the control stage circuit to jitter continuously.
6. The variable frequency converter according to claim 2, wherein the variable frequency signal stage circuit module comprises a detection stage circuit and a control stage circuit, the detection stage circuit detects the power stage circuit module and outputs a signal to the control stage circuit, the control stage circuit outputs a signal to the power stage circuit module, the signal outputted by the jitter signal generator is loaded into the control stage circuit so as to cause the output signal of the control stage circuit or the signal of the control stage circuit transferred to the power stage circuit module to jitter continuously.
7. The variable frequency converter according to claim 6, wherein the control stage circuit comprises a feedback control circuit and a driving apparatus, the feedback control circuit receives the signal outputted by the detection stage circuit and outputs a signal to the driving apparatus, the signal outputted by the jitter signal generator is loaded into the output signal of the feedback control circuit.
8. The variable frequency converter according to claim 1, wherein the variable frequency signal stage circuit module comprises a detection stage circuit and a control stage circuit, the detection stage circuit comprises an input detection stage circuit and an output detection stage circuit, the adjusting unit is electrically connected to the input detection stage circuit.
9. The variable frequency converter according to claim 8, wherein the adjusting unit comprises an adjusting element connected to the input detection stage circuit, and an adjusting element controller matched with the adjusting element, the adjusting element controller controls the parameter of the adjusting element to continuously change with time so as to load the continuous interfering signal into the input detection stage circuit.
10. The variable frequency converter according to claim 8, wherein the adjusting element is a variable resistor, the adjusting element controller is a variable resistor controller.
11. The variable frequency converter according to claim 1, wherein a frequency of the continuous interfering signal is higher than a crossover frequency of the closed-loop circuit system.
12. The variable frequency converter according to claim 11, wherein the continuous interfering signal is a voltage waveform or a current waveform which is periodical or non-periodical and whose amplitude is constant or variable.
13. An adjusting method for a variable frequency converter comprising a power stage circuit module and a variable frequency signal stage circuit module which are connected with each other to form a closed-loop circuit system, comprising: setting an adjusting unit in the variable frequency converter, loading a continuous interfering signal generated by the adjusting unit into the output signal of the variable frequency signal stage circuit module and transferring the output signal of the variable frequency signal stage circuit module to the power stage circuit module, so as to cause output of the variable frequency converter to jitter and expand the operating frequency range of the variable frequency converter.
14. The adjusting method according to claim 13, wherein the adjusting unit is a jitter signal generator and loads the continuous interfering signal generated by the jitter signal generator into the variable frequency signal stage circuit module.
15. The adjusting method according to claim 13, wherein the variable frequency signal stage circuit module comprises an input detection stage circuit and a control stage circuit, the input detection stage circuit outputs a signal to the control stage circuit, the adjusting unit comprises an adjusting element connected to the input detection stage circuit, and an adjusting element controller matched with the adjusting element, the parameter of the adjusting element is controlled to continuously change with time under the control of adjusting element controller so as to load the continuous interfering signal into the output signal of the input detection stage circuit or the signal of the input detection stage circuit transferred to the control stage circuit.
16. The adjusting method according to claim 13, wherein a frequency of the continuous interfering signal is higher than a crossover frequency of the closed-loop circuit system.
17. The adjusting method according to claim 16, wherein the continuous interfering signal is a voltage waveform or a current waveform which is periodical or non-periodical and whose amplitude is constant or variable.
18. A variable frequency converter comprising a power stage circuit module and a variable frequency signal stage circuit module which are connected with each other to form a closed-loop circuit system, further comprising an adjusting unit connected to the power stage circuit module, the adjusting unit is able to change resonance parameter of the power stage circuit module so as to cause the operating frequency of the power stage circuit module to change continuously.
19. The variable frequency converter according to claim 18, wherein the adjusting unit at least comprises an adjusting element and an adjusting element controller matched with the adjusting element, the adjusting element is connected to the power stage circuit module, the adjusting element controller controls the parameter of the adjusting element to continuously change with time.
20. The variable frequency converter according to claim 19, wherein the adjusting element is a variable capacitor, the variable capacitor is connected to the power stage circuit module, and the adjusting element controller is a variable capacitor controller.
21. The variable frequency converter according to claim 19, wherein the adjusting element is a variable inductor connected to the power stage circuit module, and the adjusting element controller is a variable inductor controller.
22. The variable frequency converter according to claim 19, wherein the adjusting element is a combination of a variable capacitor and a variable inductor, the adjusting element controller controls parameter of the variable capacitor andor the variable inductor to continuously change with time.