Method for quickly storing and reading EPG (Electronic Program Guide) data of set top box
A fast storage and set-top box technology, applied in the direction of electric digital data processing, special data processing applications, color TV parts, etc., can solve the problems of large space occupation, small memory, low configuration, etc., and achieve the effect of increasing speed
Inactive Publication Date: 2010-12-22
FUJIAN NEWLAND COMM SCI TECH
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Problems solved by technology
More importantly, the current digital TV set-top boxes all use the method of circular search to retrieve EPG data, which is slow, inefficient, and takes up a lot of space.
At the same time, with the in-depth development of the national digital TV translation work, the analog TV signals in a large number of areas are turned off. Since the average user's family has at least two TV sets, and a TV set needs a set-top box, a large number of cheap Set-top boxes, and low-cost simple set-top boxes often have relatively low configuration, small memory and flash, and it is difficult to meet the demand. However, the set-top box that can meet the demand has the problem of high cost and is not easy to be accepted by the majority of users.
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[0034] Such as figure 1 Shown, a kind of set-top box EPG data fast storage of the present invention and the method for reading comprise the following steps:
[0035] Step 10, set up a plurality of information nodes epgInfoNode in the EPG module, each information node epgInfoNode is used to store the EPG data of an EPG program; the structure of each information node epgInfoNode at least includes the following marks:
[0036] isUsed: Indicates whether the information node is used, if the information node has been used, the value of the flag is assigned to 1;
[0037] EPGInfo: the structure used to store the EPG data of the EPG program;
[0038] next: pointer to the next information node structure;
[0039] The EPGInfo is composed of the following parts:
[0040] eventId: indicates the id of the EPG event;
[0041] strEPGInfo[APP_EPG_NAME_LEN]: an array of EPG data used to store information nodes, the size of the array is determined by APP_EPG_NAME_LEN;
[0042] week: Indica...
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The invention provides a method for quickly storing and reading EPG (Electronic Program Guide) data of a set top box. The method comprises the following steps of: establishing a plurality of information nodes used for storing the EPG data in an EPG module; establishing an array used for storing the information nodes; constructing frequency channel node indicator chains formed by connecting a plurality of nodes in series for each television frequency channel, wherein each node is used for hooking an information node, and all information nodes in the frequency channel node indicator chains are arrayed according to an EPG program broadcasting time sequence; when the set top box receives new EPG data, storing the new EPG data into an empty information node; inserting the information node storing the new EPG data into a corresponding frequency channel node indicator chain according to the EPG program broadcasting time sequence; and during reading, sequentially obtaining the information nodes according to the broadcasting time sequence, reading the EPG data in the information node and displaying the read data. The invention does not need to cyclically seek and sequence, thereby greatly improving the speed of displaying the EPG.
Description
【Technical field】 [0001] The invention relates to a method for fast storing and reading EPG data of a set-top box. 【Background technique】 [0002] At present, the electronic program guide (EPG) is an important function of the digital TV set-top box, which can provide users with detailed TV program information within 7 days, including the broadcast time of the program, the detailed content of the program, etc., so that the user can Quickly grasp the content of the TV programs you need to watch, so that you can arrange to watch them. [0003] However, the number of EPGs is relatively large, sometimes even up to tens of thousands. Therefore, the digital TV set-top box needs a large amount of storage space for storing EPG data. More importantly, current digital TV set-top boxes all use a circular search method to retrieve EPG data, which is slow, inefficient, and takes up a lot of space. At the same time, with the in-depth development of the national digital TV translation wor...
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IPC IPC(8): G06F12/08H04N5/445G06F17/30
Inventor 方立
Owner FUJIAN NEWLAND COMM SCI TECH