Screw-threaded fastening device

Claim 2

A reproduction apparatus with a search function according to claim 1, characterized by further comprising: means (405) for, when a frame number is inputted for said high-speed searching, causing said image memory to retain the decode output of the present frame outputted from said video decode means until said target frame has been decoded.

Claim 3

A reproduction apparatus with a search function according to claim 1, characterized in that said means for supplying video information on said target data unit stored in said data unit memory to said video decode means, which then decodes it, contains means (405a, 405b) for storing in a frame memory the decode data output of the frame almost at the mid-point between the start frame of said target data unit and said target frame.

Claim 4

A reproduction apparatus with a search function according to claim 3, characterized by further comprising means (412, 402) for, when a frame return signal is inputted, supplying the decode data stored in said frame memory to said video decode means to cause the video decode means to decode frames, starting at the frame next to said target frame on the basis of the decode data and the compressed data read from said data unit memory.

Claim 5

A reproduction apparatus with a search function according to claim 1, characterized in that said data unit memory (406) contains areas (460a-406c) for storing not only the data unit being reproduced but also the data units before and after the currently reproduced data unit.

Claim 6

In a reproduction apparatus for a recording medium in which a management area is formed in a portion thereof and a data area is formed in another portion thereof, programs being recorded in said data area, each of said programs being composed of a plurality of data units, each of said data units containing a specified number of frames of video information, each compressed by frame correlation, and information on the start addresses of said plurality of data units being stored in said management area, a reproduction apparatus with a search function, comprising: pickup means (103) for reading the information from said recording medium; demodulation means (201) for demodulating the output signal of said pickup means; management information storage means (204) for storing each piece of management information in said management area outputted from said demodulation means; a data unit memory (406) for storing said data units outputted from said demodulation means; video decode means (402) for decoding video information on said data units outputted from said demodulation means; an image memory (405) for storing a frame (or a field) of image data outputted from said video decode means; means (204, S1-S6) for, when a frame number is inputted for high-speed searching, determining by calculation which data unit on said recording medium the target frame corresponding to said frame number belongs to, and reading the target data unit obtained from the calculation result from said recording medium according to the start address in said management information, and storing the read target data unit in said data unit memory; means (204, S7) for supplying the video information on said target data unit stored in said data unit memory to said video decode means, which then decodes it; and means (204, S8-S10) for counting frame synchronizing pulses in the course of decoding the video information on said target data unit, and performing still reproduction by storing the decode output in said image memory, when said target frame is decoded.

Claim 7

A reproduction apparatus with a search function according to claim 6, characterized in that said recording medium is either a semiconductor memory or magnetic tape.

Claim 8

In a terminal which receives data from a reproduction apparatus for a recording medium in which a management area is formed in a portion thereof and a data area is formed in another portion thereof, programs being recorded in said data area, each of said programs being composed of a plurality of data units, each of said data units containing a specified number of frames of video information, each compressed by frame correlation, and information on the start addresses of said plurality of data units being stored in said management area, a reproduction apparatus with a search function, comprising: management information storage means (601, 605) for storing each piece of management information in said management area transmitted from said reproduction apparatus; a data unit memory (603) for storing said data units transmitted from said reproduction apparatus; video decode means (402) for decoding video information on said data units; an image memory (405) for storing a frame (or a field) of image data outputted from said video decode means; means (601, 605, S1-S6) for, when a frame number is inputted for high-speed searching, determining by calculation which data unit on said recording medium the target frame corresponding to said frame number belongs to, and requesting the target data unit obtained from the calculation result from said reproduction apparatus according to the start address in said management information; means (605, S7) for supplying the video information on said target data unit stored in said data unit memory to said video decode means, which then decodes it; and means (605, S8-S10) for counting frame synchronizing pulses in the course of decoding the video information on said target data unit, and performing still reproduction by storing the decode output in said image memory, when said target frame is decoded.

Claim 9

A reproduction apparatus with a search function according to claim 8, characterized by further comprising: means (405) for, when a frame number is inputted for said high-speed searching, causing said image memory to retain the decode output of the present frame outputted from said video decode means until said target frame has been decoded.

Claim 10

A reproduction apparatus with a search function according to claim 8, characterized in that said means for supplying video information on said target data unit stored in said data unit memory to said video decode means, which then decodes it, contains means (405a, 405b) for storing in a frame memory the decode data output of the frame almost at the mid-point between the start frame of said target data unit and said target frame.