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    • 7. 发明授权
    • System and method for providing route guidance with a navigation application program
    • 使用导航应用程序提供路线引导的系统和方法
    • US06212474B1
    • 2001-04-03
    • US09196279
    • 1998-11-19
    • Andrew FowlerAnkur Mittal
    • Andrew FowlerAnkur Mittal
    • G01C2134
    • G01C21/26
    • A route guidance program and method are disclosed. Maneuver data structures are formed that include data from a geographic database for each location along a route at which a maneuvering instruction is to be provided. These maneuver data structures are used to form a list of tokens. A token can be either a character string or a symbol that refers to another item of data, which can be either a character string, audio data, or graphics data. Maneuvering instructions are provided by explicating the tokens in the list of tokens. Explicating the tokens is done by providing all the data contained in or referred to by the tokens in the order specified in the list of tokens. If the token is a character string, explication includes providing the character string data contained in the token. If the token is a symbol, explication includes providing the data referred to by the symbol, which can be either a character string, audio data, or graphics data. The list of tokens is built by combining sequences of tokens. A sequence of tokens is formed for each of the maneuver data structures. Each sequence of tokens is formed from a output list formed by application of a rules set to the data in the respective maneuver data structure. The contents of an output list for a maneuver data structure can include symbols and keys. Symbols in an output list are used to form tokens which are included in the sequence of tokens formed for that maneuver data structure. Keys in an output list refer to data in the corresponding maneuver data structure. Keys expanded to form tokens which are included in the sequence of tokens formed for that maneuver data structure.
    • 公开了一种路线引导程序和方法。 形成机动数据结构,其包括沿着将要提供操纵指令的路线的每个位置的来自地理数据库的数据。 这些机动数据结构用于形成令牌列表。 令牌可以是指代另一数据项的字符串或符号,其可以是字符串,音频数据或图形数据。 通过在令牌列表中说明令牌来提供操纵说明。 通过以令牌列表中指定的顺序提供令牌中包含或引用的所有数据来完成令牌的显示。 如果令牌是字符串,则说明包括提供令牌中包含的字符串数据。 如果令牌是符号,则解释包括提供由符号引用的数据,其可以是字符串,音频数据或图形数据。 令牌列表是通过组合令牌序列来构建的。 为每个机动数据结构形成一系列令牌。 每个令牌序列由通过在相应的操纵数据结构中应用规则集合到数据形成的输出列表形成。 机动数据结构的输出列表的内容可以包括符号和键。 输出列表中的符号用于形成令牌,这些令牌包含在针对该机动数据结构形成的令牌序列中。 输出列表中的键指的是相应机动数据结构中的数据。 密钥扩展以形成令牌,其被包括在针对该机动数据结构形成的令牌序列中。